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Kata Containers is an open source project and community working to build a standard implementation of lightweight Virtual Machines (VMs) that feel and perform like containers, but provide the workload isolation and security advantages of VMs. https://katacontainers.io/
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pods termination hanging on crio #836

Closed snir911 closed 3 years ago

snir911 commented 4 years ago

Description of problem

I'm experiencing hanging on termination of pods with crio

Tested on k8s + crio cluster setup with kata runtimeclass

Expected result

Kata container pod delete succeed

Actual result

Kata container pod delete is hanging on "Terminating" (can be forcefully deleted)

Further information

As it didn't appear on 2.0.0-alpah3 runtime but it does happen on 2.0.0-rc0 runtime I preformed a bisect which results in pointing towards one of the patches in this PR #717 ("shimv2: trust cached status when deleting containers"), i don't know if it's really related or it's a different issue that just happened to be affected by this patch

Show kata-collect-data.sh details

# Meta details Running `kata-collect-data.sh` version `2.0.0-rc0 (commit d68d850ac49db30e3799427d8b6253af431613a2)` at `2020-09-30.22:24:44.921746696+0300`. ---

Runtime

Runtime is `/usr/local/bin/kata-runtime`. # `kata-env`

/usr/local/bin/kata-runtime kata-env

```toml [Meta] Version = "1.0.25" [Runtime] Debug = true Trace = false DisableGuestSeccomp = true DisableNewNetNs = false SandboxCgroupOnly = true Path = "/usr/local/bin/kata-runtime" [Runtime.Version] OCI = "1.0.1-dev" [Runtime.Version.Version] Semver = "2.0.0-rc0" Major = 2 Minor = 0 Patch = 0 Commit = "d68d850ac49db30e3799427d8b6253af431613a2" [Runtime.Config] Path = "/etc/kata-containers/configuration.toml" [Hypervisor] MachineType = "q35" Version = "QEMU emulator version 4.2.1 (qemu-4.2.1-1.fc32)\nCopyright (c) 2003-2019 Fabrice Bellard and the QEMU Project developers" Path = "/usr/bin/qemu-kvm" BlockDeviceDriver = "virtio-scsi" EntropySource = "/dev/urandom" SharedFS = "virtio-fs" VirtioFSDaemon = "/usr/libexec/virtiofsd" Msize9p = 8192 MemorySlots = 10 PCIeRootPort = 0 HotplugVFIOOnRootBus = false Debug = true [Image] Path = "/home/fedora/go/src/github.com/kata-containers/kata-containers/tools/osbuilder/image-builder/kata-containers.img" [Kernel] Path = "/etc/kata-containers/vmlinux-kata-v5.6-april-09-2020-83-virtiofs" Parameters = "systemd.unit=kata-containers.target systemd.mask=systemd-networkd.service systemd.mask=systemd-networkd.socket scsi_mod.scan=none agent.log=debug agent.log=debug initcall_debug" [Initrd] Path = "" [Agent] Debug = true Trace = false TraceMode = "" TraceType = "" [Host] Kernel = "5.8.10-200.fc32.x86_64" Architecture = "amd64" VMContainerCapable = true SupportVSocks = true [Host.Distro] Name = "Fedora" Version = "32" [Host.CPU] Vendor = "GenuineIntel" Model = "Intel Core Processor (Skylake, IBRS)" CPUs = 4 [Host.Memory] Total = 8144848 Free = 6239724 Available = 7046664 [Netmon] Path = "/usr/libexec/kata-containers/kata-netmon" Debug = true Enable = false [Netmon.Version] Semver = "2.0.0-rc0" Major = 2 Minor = 0 Patch = 0 Commit = "<>" ```

---

Runtime config files

# Runtime config files ## Runtime default config files ``` /etc/kata-containers/configuration.toml /usr/share/defaults/kata-containers/configuration.toml ``` ## Runtime config file contents

cat "/etc/kata-containers/configuration.toml"

```toml # Copyright (c) 2017-2019 Intel Corporation # # SPDX-License-Identifier: Apache-2.0 # # XXX: WARNING: this file is auto-generated. # XXX: # XXX: Source file: "cli/config/configuration-qemu.toml.in" # XXX: Project: # XXX: Name: Kata Containers # XXX: Type: kata [hypervisor.qemu] path = "/usr/bin/qemu-kvm" #kernel = "/var/cache/kata-containers/vmlinuz.container" kernel = "/etc/kata-containers/vmlinux-kata-v5.6-april-09-2020-83-virtiofs" #initrd = "/var/cache/kata-containers/kata-containers-initrd.img" #image = "/var/cache/kata-containers/kata-containers.img" image = "/home/fedora/go/src/github.com/kata-containers/kata-containers/tools/osbuilder/image-builder/kata-containers.img" machine_type = "q35" # Optional space-separated list of options to pass to the guest kernel. # For example, use `kernel_params = "vsyscall=emulate"` if you are having # trouble running pre-2.15 glibc. # # WARNING: - any parameter specified here will take priority over the default # parameter value of the same name used to start the virtual machine. # Do not set values here unless you understand the impact of doing so as you # may stop the virtual machine from booting. # To see the list of default parameters, enable hypervisor debug, create a # container and look for 'default-kernel-parameters' log entries. kernel_params = " agent.log=debug initcall_debug" # Path to the firmware. # If you want that qemu uses the default firmware leave this option empty firmware = "" # Machine accelerators # comma-separated list of machine accelerators to pass to the hypervisor. # For example, `machine_accelerators = "nosmm,nosmbus,nosata,nopit,static-prt,nofw"` machine_accelerators="" # Default number of vCPUs per SB/VM: # unspecified or 0 --> will be set to 1 # < 0 --> will be set to the actual number of physical cores # > 0 <= number of physical cores --> will be set to the specified number # > number of physical cores --> will be set to the actual number of physical cores default_vcpus = 1 # Default maximum number of vCPUs per SB/VM: # unspecified or == 0 --> will be set to the actual number of physical cores or to the maximum number # of vCPUs supported by KVM if that number is exceeded # > 0 <= number of physical cores --> will be set to the specified number # > number of physical cores --> will be set to the actual number of physical cores or to the maximum number # of vCPUs supported by KVM if that number is exceeded # WARNING: Depending of the architecture, the maximum number of vCPUs supported by KVM is used when # the actual number of physical cores is greater than it. # WARNING: Be aware that this value impacts the virtual machine's memory footprint and CPU # the hotplug functionality. For example, `default_maxvcpus = 240` specifies that until 240 vCPUs # can be added to a SB/VM, but the memory footprint will be big. Another example, with # `default_maxvcpus = 8` the memory footprint will be small, but 8 will be the maximum number of # vCPUs supported by the SB/VM. In general, we recommend that you do not edit this variable, # unless you know what are you doing. default_maxvcpus = 0 # Bridges can be used to hot plug devices. # Limitations: # * Currently only pci bridges are supported # * Until 30 devices per bridge can be hot plugged. # * Until 5 PCI bridges can be cold plugged per VM. # This limitation could be a bug in qemu or in the kernel # Default number of bridges per SB/VM: # unspecified or 0 --> will be set to 1 # > 1 <= 5 --> will be set to the specified number # > 5 --> will be set to 5 default_bridges = 1 # Default memory size in MiB for SB/VM. # If unspecified then it will be set 2048 MiB. default_memory = 2048 # # Default memory slots per SB/VM. # If unspecified then it will be set 10. # This is will determine the times that memory will be hotadded to sandbox/VM. #memory_slots = 10 # The size in MiB will be plused to max memory of hypervisor. # It is the memory address space for the NVDIMM devie. # If set block storage driver (block_device_driver) to "nvdimm", # should set memory_offset to the size of block device. # Default 0 #memory_offset = 0 # Specifies virtio-mem will be enabled or not. # Please note that this option should be used with the command # "echo 1 > /proc/sys/vm/overcommit_memory". # Default false #enable_virtio_mem = true # Disable block device from being used for a container's rootfs. # In case of a storage driver like devicemapper where a container's # root file system is backed by a block device, the block device is passed # directly to the hypervisor for performance reasons. # This flag prevents the block device from being passed to the hypervisor, # 9pfs is used instead to pass the rootfs. disable_block_device_use = false # Shared file system type: # - virtio-9p (default) # - virtio-fs shared_fs = "virtio-fs" # Path to vhost-user-fs daemon. virtio_fs_daemon = "/usr/libexec/virtiofsd" # Default size of DAX cache in MiB virtio_fs_cache_size = 0 # Extra args for virtiofsd daemon # # Format example: # ["-o", "arg1=xxx,arg2", "-o", "hello world", "--arg3=yyy"] # # see `virtiofsd -h` for possible options. virtio_fs_extra_args = [] # Cache mode: # # - none # Metadata, data, and pathname lookup are not cached in guest. They are # always fetched from host and any changes are immediately pushed to host. # # - auto # Metadata and pathname lookup cache expires after a configured amount of # time (default is 1 second). Data is cached while the file is open (close # to open consistency). # # - always # Metadata, data, and pathname lookup are cached in guest and never expire. virtio_fs_cache = "always" # Block storage driver to be used for the hypervisor in case the container # rootfs is backed by a block device. This is virtio-scsi, virtio-blk # or nvdimm. block_device_driver = "virtio-scsi" # Specifies cache-related options will be set to block devices or not. # Default false #block_device_cache_set = true # Specifies cache-related options for block devices. # Denotes whether use of O_DIRECT (bypass the host page cache) is enabled. # Default false #block_device_cache_direct = true # Specifies cache-related options for block devices. # Denotes whether flush requests for the device are ignored. # Default false #block_device_cache_noflush = true # Enable iothreads (data-plane) to be used. This causes IO to be # handled in a separate IO thread. This is currently only implemented # for SCSI. # enable_iothreads = false # Enable pre allocation of VM RAM, default false # Enabling this will result in lower container density # as all of the memory will be allocated and locked # This is useful when you want to reserve all the memory # upfront or in the cases where you want memory latencies # to be very predictable # Default false #enable_mem_prealloc = true # Enable huge pages for VM RAM, default false # Enabling this will result in the VM memory # being allocated using huge pages. # This is useful when you want to use vhost-user network # stacks within the container. This will automatically # result in memory pre allocation #enable_hugepages = true # Enable vhost-user storage device, default false # Enabling this will result in some Linux reserved block type # major range 240-254 being chosen to represent vhost-user devices. enable_vhost_user_store = false # The base directory specifically used for vhost-user devices. # Its sub-path "block" is used for block devices; "block/sockets" is # where we expect vhost-user sockets to live; "block/devices" is where # simulated block device nodes for vhost-user devices to live. vhost_user_store_path = "/var/run/kata-containers/vhost-user" # Enable file based guest memory support. The default is an empty string which # will disable this feature. In the case of virtio-fs, this is enabled # automatically and '/dev/shm' is used as the backing folder. # This option will be ignored if VM templating is enabled. #file_mem_backend = "" # Enable swap of vm memory. Default false. # The behaviour is undefined if mem_prealloc is also set to true #enable_swap = true # This option changes the default hypervisor and kernel parameters # to enable debug output where available. This extra output is added # to the proxy logs, but only when proxy debug is also enabled. # # Default false enable_debug = true # Disable the customizations done in the runtime when it detects # that it is running on top a VMM. This will result in the runtime # behaving as it would when running on bare metal. # #disable_nesting_checks = true # This is the msize used for 9p shares. It is the number of bytes # used for 9p packet payload. #msize_9p = 8192 # If true and vsocks are supported, use vsocks to communicate directly # with the agent and no proxy is started, otherwise use unix # sockets and start a proxy to communicate with the agent. # Default false use_vsock = true # If false and nvdimm is supported, use nvdimm device to plug guest image. # Otherwise virtio-block device is used. # Default is false #disable_image_nvdimm = true # VFIO devices are hotplugged on a bridge by default. # Enable hotplugging on root bus. This may be required for devices with # a large PCI bar, as this is a current limitation with hotplugging on # a bridge. This value is valid for "pc" machine type. # Default false #hotplug_vfio_on_root_bus = true # Before hot plugging a PCIe device, you need to add a pcie_root_port device. # Use this parameter when using some large PCI bar devices, such as Nvidia GPU # The value means the number of pcie_root_port # This value is valid when hotplug_vfio_on_root_bus is true and machine_type is "q35" # Default 0 #pcie_root_port = 2 # If vhost-net backend for virtio-net is not desired, set to true. Default is false, which trades off # security (vhost-net runs ring0) for network I/O performance. #disable_vhost_net = true # # Default entropy source. # The path to a host source of entropy (including a real hardware RNG) # /dev/urandom and /dev/random are two main options. # Be aware that /dev/random is a blocking source of entropy. If the host # runs out of entropy, the VMs boot time will increase leading to get startup # timeouts. # The source of entropy /dev/urandom is non-blocking and provides a # generally acceptable source of entropy. It should work well for pretty much # all practical purposes. #entropy_source= "/dev/urandom" # Path to OCI hook binaries in the *guest rootfs*. # This does not affect host-side hooks which must instead be added to # the OCI spec passed to the runtime. # # You can create a rootfs with hooks by customizing the osbuilder scripts: # https://github.com/kata-containers/osbuilder # # Hooks must be stored in a subdirectory of guest_hook_path according to their # hook type, i.e. "guest_hook_path/{prestart,postart,poststop}". # The agent will scan these directories for executable files and add them, in # lexicographical order, to the lifecycle of the guest container. # Hooks are executed in the runtime namespace of the guest. See the official documentation: # https://github.com/opencontainers/runtime-spec/blob/v1.0.1/config.md#posix-platform-hooks # Warnings will be logged if any error is encountered will scanning for hooks, # but it will not abort container execution. #guest_hook_path = "/usr/share/oci/hooks" [factory] # VM templating support. Once enabled, new VMs are created from template # using vm cloning. They will share the same initial kernel, initramfs and # agent memory by mapping it readonly. It helps speeding up new container # creation and saves a lot of memory if there are many kata containers running # on the same host. # # When disabled, new VMs are created from scratch. # # Note: Requires "initrd=" to be set ("image=" is not supported). # # Default false #enable_template = true # Specifies the path of template. # # Default "/run/vc/vm/template" #template_path = "/run/vc/vm/template" # The number of caches of VMCache: # unspecified or == 0 --> VMCache is disabled # > 0 --> will be set to the specified number # # VMCache is a function that creates VMs as caches before using it. # It helps speed up new container creation. # The function consists of a server and some clients communicating # through Unix socket. The protocol is gRPC in protocols/cache/cache.proto. # The VMCache server will create some VMs and cache them by factory cache. # It will convert the VM to gRPC format and transport it when gets # requestion from clients. # Factory grpccache is the VMCache client. It will request gRPC format # VM and convert it back to a VM. If VMCache function is enabled, # kata-runtime will request VM from factory grpccache when it creates # a new sandbox. # # Default 0 #vm_cache_number = 0 # Specify the address of the Unix socket that is used by VMCache. # # Default /var/run/kata-containers/cache.sock #vm_cache_endpoint = "/var/run/kata-containers/cache.sock" [proxy.kata] path = "/usr/libexec/kata-containers/kata-proxy" # If enabled, proxy messages will be sent to the system log # (default: disabled) enable_debug = true [shim.kata] path = "/usr/libexec/kata-containers/kata-shim" # If enabled, shim messages will be sent to the system log # (default: disabled) enable_debug = true # If enabled, the shim will create opentracing.io traces and spans. # (See https://www.jaegertracing.io/docs/getting-started). # # Note: By default, the shim runs in a separate network namespace. Therefore, # to allow it to send trace details to the Jaeger agent running on the host, # it is necessary to set 'disable_new_netns=true' so that it runs in the host # network namespace. # # (default: disabled) #enable_tracing = true [agent.kata] # If enabled, make the agent display debug-level messages. # (default: disabled) enable_debug = true # Enable agent tracing. # # If enabled, the default trace mode is "dynamic" and the # default trace type is "isolated". The trace mode and type are set # explicity with the `trace_type=` and `trace_mode=` options. # # Notes: # # - Tracing is ONLY enabled when `enable_tracing` is set: explicitly # setting `trace_mode=` and/or `trace_type=` without setting `enable_tracing` # will NOT activate agent tracing. # # - See https://github.com/kata-containers/agent/blob/master/TRACING.md for # full details. # # (default: disabled) #enable_tracing = true # #trace_mode = "dynamic" #trace_type = "isolated" # Comma separated list of kernel modules and their parameters. # These modules will be loaded in the guest kernel using modprobe(8). # The following example can be used to load two kernel modules with parameters # - kernel_modules=["e1000e InterruptThrottleRate=3000,3000,3000 EEE=1", "i915 enable_ppgtt=0"] # The first word is considered as the module name and the rest as its parameters. # Container will not be started when: # * A kernel module is specified and the modprobe command is not installed in the guest # or it fails loading the module. # * The module is not available in the guest or it doesn't met the guest kernel # requirements, like architecture and version. # kernel_modules=[] [netmon] # If enabled, the network monitoring process gets started when the # sandbox is created. This allows for the detection of some additional # network being added to the existing network namespace, after the # sandbox has been created. # (default: disabled) #enable_netmon = true # Specify the path to the netmon binary. path = "/usr/libexec/kata-containers/kata-netmon" # If enabled, netmon messages will be sent to the system log # (default: disabled) enable_debug = true [runtime] # If enabled, the runtime will log additional debug messages to the # system log # (default: disabled) enable_debug = true # # Internetworking model # Determines how the VM should be connected to the # the container network interface # Options: # # - macvtap # Used when the Container network interface can be bridged using # macvtap. # # - none # Used when customize network. Only creates a tap device. No veth pair. # # - tcfilter # Uses tc filter rules to redirect traffic from the network interface # provided by plugin to a tap interface connected to the VM. # internetworking_model="tcfilter" # disable guest seccomp # Determines whether container seccomp profiles are passed to the virtual # machine and applied by the kata agent. If set to true, seccomp is not applied # within the guest # (default: true) disable_guest_seccomp=true # If enabled, the runtime will create opentracing.io traces and spans. # (See https://www.jaegertracing.io/docs/getting-started). # (default: disabled) #enable_tracing = true # If enabled, the runtime will not create a network namespace for shim and hypervisor processes. # This option may have some potential impacts to your host. It should only be used when you know what you're doing. # `disable_new_netns` conflicts with `enable_netmon` # `disable_new_netns` conflicts with `internetworking_model=tcfilter` and `internetworking_model=macvtap`. It works only # with `internetworking_model=none`. The tap device will be in the host network namespace and can connect to a bridge # (like OVS) directly. # If you are using docker, `disable_new_netns` only works with `docker run --net=none` # (default: false) #disable_new_netns = true # if enabled, the runtime will add all the kata processes inside one dedicated cgroup. # The container cgroups in the host are not created, just one single cgroup per sandbox. # The runtime caller is free to restrict or collect cgroup stats of the overall Kata sandbox. # The sandbox cgroup path is the parent cgroup of a container with the PodSandbox annotation. # The sandbox cgroup is constrained if there is no container type annotation. # See: https://godoc.org/github.com/kata-containers/runtime/virtcontainers#ContainerType sandbox_cgroup_only=true # Enabled experimental feature list, format: ["a", "b"]. # Experimental features are features not stable enough for production, # they may break compatibility, and are prepared for a big version bump. # Supported experimental features: # (default: []) experimental=[] ```

cat "/usr/share/defaults/kata-containers/configuration.toml"

```toml # Copyright (c) 2017-2019 Intel Corporation # # SPDX-License-Identifier: Apache-2.0 # # XXX: WARNING: this file is auto-generated. # XXX: # XXX: Source file: "cli/config/configuration-qemu.toml.in" # XXX: Project: # XXX: Name: Kata Containers # XXX: Type: kata [hypervisor.qemu] path = "/usr/bin/qemu-system-x86_64" kernel = "/usr/share/kata-containers/vmlinux.container" image = "/usr/share/kata-containers/kata-containers.img" machine_type = "pc" # Optional space-separated list of options to pass to the guest kernel. # For example, use `kernel_params = "vsyscall=emulate"` if you are having # trouble running pre-2.15 glibc. # # WARNING: - any parameter specified here will take priority over the default # parameter value of the same name used to start the virtual machine. # Do not set values here unless you understand the impact of doing so as you # may stop the virtual machine from booting. # To see the list of default parameters, enable hypervisor debug, create a # container and look for 'default-kernel-parameters' log entries. kernel_params = "" # Path to the firmware. # If you want that qemu uses the default firmware leave this option empty firmware = "" # Machine accelerators # comma-separated list of machine accelerators to pass to the hypervisor. # For example, `machine_accelerators = "nosmm,nosmbus,nosata,nopit,static-prt,nofw"` machine_accelerators="" # CPU features # comma-separated list of cpu features to pass to the cpu # For example, `cpu_features = "pmu=off,vmx=off" cpu_features="pmu=off" # Default number of vCPUs per SB/VM: # unspecified or 0 --> will be set to 1 # < 0 --> will be set to the actual number of physical cores # > 0 <= number of physical cores --> will be set to the specified number # > number of physical cores --> will be set to the actual number of physical cores default_vcpus = 1 # Default maximum number of vCPUs per SB/VM: # unspecified or == 0 --> will be set to the actual number of physical cores or to the maximum number # of vCPUs supported by KVM if that number is exceeded # > 0 <= number of physical cores --> will be set to the specified number # > number of physical cores --> will be set to the actual number of physical cores or to the maximum number # of vCPUs supported by KVM if that number is exceeded # WARNING: Depending of the architecture, the maximum number of vCPUs supported by KVM is used when # the actual number of physical cores is greater than it. # WARNING: Be aware that this value impacts the virtual machine's memory footprint and CPU # the hotplug functionality. For example, `default_maxvcpus = 240` specifies that until 240 vCPUs # can be added to a SB/VM, but the memory footprint will be big. Another example, with # `default_maxvcpus = 8` the memory footprint will be small, but 8 will be the maximum number of # vCPUs supported by the SB/VM. In general, we recommend that you do not edit this variable, # unless you know what are you doing. # NOTICE: on arm platform with gicv2 interrupt controller, set it to 8. default_maxvcpus = 0 # Bridges can be used to hot plug devices. # Limitations: # * Currently only pci bridges are supported # * Until 30 devices per bridge can be hot plugged. # * Until 5 PCI bridges can be cold plugged per VM. # This limitation could be a bug in qemu or in the kernel # Default number of bridges per SB/VM: # unspecified or 0 --> will be set to 1 # > 1 <= 5 --> will be set to the specified number # > 5 --> will be set to 5 default_bridges = 1 # Default memory size in MiB for SB/VM. # If unspecified then it will be set 2048 MiB. default_memory = 2048 # # Default memory slots per SB/VM. # If unspecified then it will be set 10. # This is will determine the times that memory will be hotadded to sandbox/VM. #memory_slots = 10 # The size in MiB will be plused to max memory of hypervisor. # It is the memory address space for the NVDIMM devie. # If set block storage driver (block_device_driver) to "nvdimm", # should set memory_offset to the size of block device. # Default 0 #memory_offset = 0 # Specifies virtio-mem will be enabled or not. # Please note that this option should be used with the command # "echo 1 > /proc/sys/vm/overcommit_memory". # Default false #enable_virtio_mem = true # Disable block device from being used for a container's rootfs. # In case of a storage driver like devicemapper where a container's # root file system is backed by a block device, the block device is passed # directly to the hypervisor for performance reasons. # This flag prevents the block device from being passed to the hypervisor, # 9pfs is used instead to pass the rootfs. disable_block_device_use = false # Shared file system type: # - virtio-9p (default) # - virtio-fs shared_fs = "virtio-9p" # Path to vhost-user-fs daemon. virtio_fs_daemon = "/usr/bin/virtiofsd" # Default size of DAX cache in MiB virtio_fs_cache_size = 1024 # Extra args for virtiofsd daemon # # Format example: # ["-o", "arg1=xxx,arg2", "-o", "hello world", "--arg3=yyy"] # # see `virtiofsd -h` for possible options. virtio_fs_extra_args = [] # Cache mode: # # - none # Metadata, data, and pathname lookup are not cached in guest. They are # always fetched from host and any changes are immediately pushed to host. # # - auto # Metadata and pathname lookup cache expires after a configured amount of # time (default is 1 second). Data is cached while the file is open (close # to open consistency). # # - always # Metadata, data, and pathname lookup are cached in guest and never expire. virtio_fs_cache = "auto" # Block storage driver to be used for the hypervisor in case the container # rootfs is backed by a block device. This is virtio-scsi, virtio-blk # or nvdimm. block_device_driver = "virtio-scsi" # Specifies cache-related options will be set to block devices or not. # Default false #block_device_cache_set = true # Specifies cache-related options for block devices. # Denotes whether use of O_DIRECT (bypass the host page cache) is enabled. # Default false #block_device_cache_direct = true # Specifies cache-related options for block devices. # Denotes whether flush requests for the device are ignored. # Default false #block_device_cache_noflush = true # Enable iothreads (data-plane) to be used. This causes IO to be # handled in a separate IO thread. This is currently only implemented # for SCSI. # enable_iothreads = false # Enable pre allocation of VM RAM, default false # Enabling this will result in lower container density # as all of the memory will be allocated and locked # This is useful when you want to reserve all the memory # upfront or in the cases where you want memory latencies # to be very predictable # Default false #enable_mem_prealloc = true # Enable huge pages for VM RAM, default false # Enabling this will result in the VM memory # being allocated using huge pages. # This is useful when you want to use vhost-user network # stacks within the container. This will automatically # result in memory pre allocation #enable_hugepages = true # Enable vhost-user storage device, default false # Enabling this will result in some Linux reserved block type # major range 240-254 being chosen to represent vhost-user devices. enable_vhost_user_store = false # The base directory specifically used for vhost-user devices. # Its sub-path "block" is used for block devices; "block/sockets" is # where we expect vhost-user sockets to live; "block/devices" is where # simulated block device nodes for vhost-user devices to live. vhost_user_store_path = "/var/run/kata-containers/vhost-user" # Enable vIOMMU, default false # Enabling this will result in the VM having a vIOMMU device # This will also add the following options to the kernel's # command line: intel_iommu=on,iommu=pt #enable_iommu = true # Enable IOMMU_PLATFORM, default false # Enabling this will result in the VM device having iommu_platform=on set #enable_iommu_platform = true # Enable file based guest memory support. The default is an empty string which # will disable this feature. In the case of virtio-fs, this is enabled # automatically and '/dev/shm' is used as the backing folder. # This option will be ignored if VM templating is enabled. #file_mem_backend = "" # Enable swap of vm memory. Default false. # The behaviour is undefined if mem_prealloc is also set to true #enable_swap = true # This option changes the default hypervisor and kernel parameters # to enable debug output where available. # # Default false #enable_debug = true # Disable the customizations done in the runtime when it detects # that it is running on top a VMM. This will result in the runtime # behaving as it would when running on bare metal. # #disable_nesting_checks = true # This is the msize used for 9p shares. It is the number of bytes # used for 9p packet payload. #msize_9p = 8192 # If false and nvdimm is supported, use nvdimm device to plug guest image. # Otherwise virtio-block device is used. # Default is false #disable_image_nvdimm = true # VFIO devices are hotplugged on a bridge by default. # Enable hotplugging on root bus. This may be required for devices with # a large PCI bar, as this is a current limitation with hotplugging on # a bridge. This value is valid for "pc" machine type. # Default false #hotplug_vfio_on_root_bus = true # Before hot plugging a PCIe device, you need to add a pcie_root_port device. # Use this parameter when using some large PCI bar devices, such as Nvidia GPU # The value means the number of pcie_root_port # This value is valid when hotplug_vfio_on_root_bus is true and machine_type is "q35" # Default 0 #pcie_root_port = 2 # If vhost-net backend for virtio-net is not desired, set to true. Default is false, which trades off # security (vhost-net runs ring0) for network I/O performance. #disable_vhost_net = true # # Default entropy source. # The path to a host source of entropy (including a real hardware RNG) # /dev/urandom and /dev/random are two main options. # Be aware that /dev/random is a blocking source of entropy. If the host # runs out of entropy, the VMs boot time will increase leading to get startup # timeouts. # The source of entropy /dev/urandom is non-blocking and provides a # generally acceptable source of entropy. It should work well for pretty much # all practical purposes. #entropy_source= "/dev/urandom" # Path to OCI hook binaries in the *guest rootfs*. # This does not affect host-side hooks which must instead be added to # the OCI spec passed to the runtime. # # You can create a rootfs with hooks by customizing the osbuilder scripts: # https://github.com/kata-containers/osbuilder # # Hooks must be stored in a subdirectory of guest_hook_path according to their # hook type, i.e. "guest_hook_path/{prestart,postart,poststop}". # The agent will scan these directories for executable files and add them, in # lexicographical order, to the lifecycle of the guest container. # Hooks are executed in the runtime namespace of the guest. See the official documentation: # https://github.com/opencontainers/runtime-spec/blob/v1.0.1/config.md#posix-platform-hooks # Warnings will be logged if any error is encountered will scanning for hooks, # but it will not abort container execution. #guest_hook_path = "/usr/share/oci/hooks" # # Use rx Rate Limiter to control network I/O inbound bandwidth(size in bits/sec for SB/VM). # In Qemu, we use classful qdiscs HTB(Hierarchy Token Bucket) to discipline traffic. # Default 0-sized value means unlimited rate. #rx_rate_limiter_max_rate = 0 # Use tx Rate Limiter to control network I/O outbound bandwidth(size in bits/sec for SB/VM). # In Qemu, we use classful qdiscs HTB(Hierarchy Token Bucket) and ifb(Intermediate Functional Block) # to discipline traffic. # Default 0-sized value means unlimited rate. #tx_rate_limiter_max_rate = 0 [factory] # VM templating support. Once enabled, new VMs are created from template # using vm cloning. They will share the same initial kernel, initramfs and # agent memory by mapping it readonly. It helps speeding up new container # creation and saves a lot of memory if there are many kata containers running # on the same host. # # When disabled, new VMs are created from scratch. # # Note: Requires "initrd=" to be set ("image=" is not supported). # # Default false #enable_template = true # Specifies the path of template. # # Default "/run/vc/vm/template" #template_path = "/run/vc/vm/template" # The number of caches of VMCache: # unspecified or == 0 --> VMCache is disabled # > 0 --> will be set to the specified number # # VMCache is a function that creates VMs as caches before using it. # It helps speed up new container creation. # The function consists of a server and some clients communicating # through Unix socket. The protocol is gRPC in protocols/cache/cache.proto. # The VMCache server will create some VMs and cache them by factory cache. # It will convert the VM to gRPC format and transport it when gets # requestion from clients. # Factory grpccache is the VMCache client. It will request gRPC format # VM and convert it back to a VM. If VMCache function is enabled, # kata-runtime will request VM from factory grpccache when it creates # a new sandbox. # # Default 0 #vm_cache_number = 0 # Specify the address of the Unix socket that is used by VMCache. # # Default /var/run/kata-containers/cache.sock #vm_cache_endpoint = "/var/run/kata-containers/cache.sock" [agent.kata] # If enabled, make the agent display debug-level messages. # (default: disabled) #enable_debug = true # Enable agent tracing. # # If enabled, the default trace mode is "dynamic" and the # default trace type is "isolated". The trace mode and type are set # explicity with the `trace_type=` and `trace_mode=` options. # # Notes: # # - Tracing is ONLY enabled when `enable_tracing` is set: explicitly # setting `trace_mode=` and/or `trace_type=` without setting `enable_tracing` # will NOT activate agent tracing. # # - See https://github.com/kata-containers/agent/blob/master/TRACING.md for # full details. # # (default: disabled) #enable_tracing = true # #trace_mode = "dynamic" #trace_type = "isolated" # Comma separated list of kernel modules and their parameters. # These modules will be loaded in the guest kernel using modprobe(8). # The following example can be used to load two kernel modules with parameters # - kernel_modules=["e1000e InterruptThrottleRate=3000,3000,3000 EEE=1", "i915 enable_ppgtt=0"] # The first word is considered as the module name and the rest as its parameters. # Container will not be started when: # * A kernel module is specified and the modprobe command is not installed in the guest # or it fails loading the module. # * The module is not available in the guest or it doesn't met the guest kernel # requirements, like architecture and version. # kernel_modules=[] # Enable debug console. # If enabled, user can connect guest OS running inside hypervisor # through "kata-runtime exec " command #debug_console_enabled = true [netmon] # If enabled, the network monitoring process gets started when the # sandbox is created. This allows for the detection of some additional # network being added to the existing network namespace, after the # sandbox has been created. # (default: disabled) #enable_netmon = true # Specify the path to the netmon binary. path = "/usr/libexec/kata-containers/kata-netmon" # If enabled, netmon messages will be sent to the system log # (default: disabled) #enable_debug = true [runtime] # If enabled, the runtime will log additional debug messages to the # system log # (default: disabled) #enable_debug = true # # Internetworking model # Determines how the VM should be connected to the # the container network interface # Options: # # - macvtap # Used when the Container network interface can be bridged using # macvtap. # # - none # Used when customize network. Only creates a tap device. No veth pair. # # - tcfilter # Uses tc filter rules to redirect traffic from the network interface # provided by plugin to a tap interface connected to the VM. # internetworking_model="tcfilter" # disable guest seccomp # Determines whether container seccomp profiles are passed to the virtual # machine and applied by the kata agent. If set to true, seccomp is not applied # within the guest # (default: true) disable_guest_seccomp=true # If enabled, the runtime will create opentracing.io traces and spans. # (See https://www.jaegertracing.io/docs/getting-started). # (default: disabled) #enable_tracing = true # If enabled, the runtime will not create a network namespace for shim and hypervisor processes. # This option may have some potential impacts to your host. It should only be used when you know what you're doing. # `disable_new_netns` conflicts with `enable_netmon` # `disable_new_netns` conflicts with `internetworking_model=tcfilter` and `internetworking_model=macvtap`. It works only # with `internetworking_model=none`. The tap device will be in the host network namespace and can connect to a bridge # (like OVS) directly. # If you are using docker, `disable_new_netns` only works with `docker run --net=none` # (default: false) #disable_new_netns = true # if enabled, the runtime will add all the kata processes inside one dedicated cgroup. # The container cgroups in the host are not created, just one single cgroup per sandbox. # The runtime caller is free to restrict or collect cgroup stats of the overall Kata sandbox. # The sandbox cgroup path is the parent cgroup of a container with the PodSandbox annotation. # The sandbox cgroup is constrained if there is no container type annotation. # See: https://godoc.org/github.com/kata-containers/runtime/virtcontainers#ContainerType sandbox_cgroup_only=false # Enabled experimental feature list, format: ["a", "b"]. # Experimental features are features not stable enough for production, # they may break compatibility, and are prepared for a big version bump. # Supported experimental features: # (default: []) experimental=[] # If enabled, user can run pprof tools with shim v2 process through kata-monitor. # (default: false) # EnablePprof = true ```

---

Containerd shim v2

Containerd shim v2 is `/usr/local/bin/containerd-shim-kata-v2`.

containerd-shim-kata-v2 --version

``` Kata Containers containerd shim: id: "io.containerd.kata.v2", version: 2.0.0-rc0, commit: d68d850ac49db30e3799427d8b6253af431613a2 ```

---

KSM throttler

# KSM throttler ## version ## systemd service

Image details

# Image details ```yaml --- osbuilder: url: "https://github.com/kata-containers/kata-containers/tools/osbuilder" version: "unknown" rootfs-creation-time: "2020-09-30T19:13:45.495684458+0000Z" description: "osbuilder rootfs" file-format-version: "0.0.2" architecture: "x86_64" base-distro: name: "Fedora" version: "30" packages: default: - "chrony" - "iptables" - "systemd" extra: agent: url: "https://github.com/kata-containers/kata-containers" name: "kata-agent" version: "2.0.0-rc0" agent-is-init-daemon: "no" ``` ---

Initrd details

# Initrd details No initrd ---

Logfiles

# Logfiles ## Runtime logs

Runtime logs

No recent runtime problems found in system journal.

## Throttler logs
Throttler logs

No recent throttler problems found in system journal.

## Kata Containerd Shim v2 logs
Kata Containerd Shim v2

Recent problems found in system journal: ``` time="2020-09-30T22:23:37.263795211+03:00" level=error msg="failed to create listener" error="\"/containerd-shim/default/404943e0a7e1872b1b521abddaed8d6a5b490bd8a829ec6425b3c5f6e81c5528/shim-monitor.sock\": unix socket path too long (> 106)" source=containerd-kata-shim-v2 subsystem=shim-management time="2020-09-30T22:23:37.310333642+03:00" level=error msg="post event" error="failed to publish event: exit status 1" pid=3121 sandbox=404943e0a7e1872b1b521abddaed8d6a5b490bd8a829ec6425b3c5f6e81c5528 source=containerd-kata-shim-v2 time="2020-09-30T22:23:37.351725558+03:00" level=error msg="post event" error="failed to publish event: exit status 1" pid=3121 sandbox=404943e0a7e1872b1b521abddaed8d6a5b490bd8a829ec6425b3c5f6e81c5528 source=containerd-kata-shim-v2 time="2020-09-30T22:23:39.479459339+03:00" level=error msg="post event" error="failed to publish event: exit status 1" pid=3121 sandbox=404943e0a7e1872b1b521abddaed8d6a5b490bd8a829ec6425b3c5f6e81c5528 source=containerd-kata-shim-v2 time="2020-09-30T22:23:39.552536479+03:00" level=error msg="post event" error="failed to publish event: exit status 1" pid=3121 sandbox=404943e0a7e1872b1b521abddaed8d6a5b490bd8a829ec6425b3c5f6e81c5528 source=containerd-kata-shim-v2 time="2020-09-30T22:24:00.528295443+03:00" level=warning msg="Could not remove container share dir" error="no such file or directory" pid=3121 sandbox=404943e0a7e1872b1b521abddaed8d6a5b490bd8a829ec6425b3c5f6e81c5528 share-dir=/run/kata-containers/shared/sandboxes/404943e0a7e1872b1b521abddaed8d6a5b490bd8a829ec6425b3c5f6e81c5528/d9f015f34381f11229919f86f6ea3c51776d2fc25cc8319efa25169284f1532b source=virtcontainers subsystem=container time="2020-09-30T22:24:00.578276291+03:00" level=warning msg="Could not remove container share dir" error="no such file or directory" pid=3121 sandbox=404943e0a7e1872b1b521abddaed8d6a5b490bd8a829ec6425b3c5f6e81c5528 share-dir=/run/kata-containers/shared/sandboxes/404943e0a7e1872b1b521abddaed8d6a5b490bd8a829ec6425b3c5f6e81c5528/404943e0a7e1872b1b521abddaed8d6a5b490bd8a829ec6425b3c5f6e81c5528 source=virtcontainers subsystem=container time="2020-09-30T22:24:00.580092788+03:00" level=error msg="Failed to read guest console logs" console-protocol=unix console-url=/run/vc/vm/404943e0a7e1872b1b521abddaed8d6a5b490bd8a829ec6425b3c5f6e81c5528/console.sock error="read unix @->/run/vc/vm/404943e0a7e1872b1b521abddaed8d6a5b490bd8a829ec6425b3c5f6e81c5528/console.sock: use of closed network connection" pid=3121 sandbox=404943e0a7e1872b1b521abddaed8d6a5b490bd8a829ec6425b3c5f6e81c5528 source=virtcontainers subsystem=sandbox time="2020-09-30T22:24:00.580141885+03:00" level=error msg="Could not read qemu pid file" error="open /run/vc/vm/404943e0a7e1872b1b521abddaed8d6a5b490bd8a829ec6425b3c5f6e81c5528/pid: no such file or directory" pid=3121 sandbox=404943e0a7e1872b1b521abddaed8d6a5b490bd8a829ec6425b3c5f6e81c5528 source=virtcontainers subsystem=qemu time="2020-09-30T22:24:00.580293282+03:00" level=error msg="Could not read qemu pid file" error="open /run/vc/vm/404943e0a7e1872b1b521abddaed8d6a5b490bd8a829ec6425b3c5f6e81c5528/pid: no such file or directory" pid=3121 sandbox=404943e0a7e1872b1b521abddaed8d6a5b490bd8a829ec6425b3c5f6e81c5528 source=virtcontainers subsystem=qemu time="2020-09-30T22:24:00.580425785+03:00" level=error msg="Could not read qemu pid file" error="open /run/vc/vm/404943e0a7e1872b1b521abddaed8d6a5b490bd8a829ec6425b3c5f6e81c5528/pid: no such file or directory" pid=3121 sandbox=404943e0a7e1872b1b521abddaed8d6a5b490bd8a829ec6425b3c5f6e81c5528 source=virtcontainers subsystem=qemu time="2020-09-30T22:24:00.580709496+03:00" level=warning msg="failed to get OOM event from sandbox" error="ttrpc: closed" pid=3121 sandbox=404943e0a7e1872b1b521abddaed8d6a5b490bd8a829ec6425b3c5f6e81c5528 source=containerd-kata-shim-v2 time="2020-09-30T22:24:00.600958418+03:00" level=error msg="post event" error="failed to publish event: exit status 1" pid=3121 sandbox=404943e0a7e1872b1b521abddaed8d6a5b490bd8a829ec6425b3c5f6e81c5528 source=containerd-kata-shim-v2 time="2020-09-30T22:24:00.664418762+03:00" level=error msg="post event" error="failed to publish event: exit status 1" pid=3121 sandbox=404943e0a7e1872b1b521abddaed8d6a5b490bd8a829ec6425b3c5f6e81c5528 source=containerd-kata-shim-v2 time="2020-09-30T22:24:15.580832842+03:00" level=warning msg="failed to get OOM event from sandbox" error="rpc error: code = DeadlineExceeded desc = timed out connecting to vsock 1147599665:1024" pid=3121 sandbox=404943e0a7e1872b1b521abddaed8d6a5b490bd8a829ec6425b3c5f6e81c5528 source=containerd-kata-shim-v2 time="2020-09-30T22:24:15.580894524+03:00" level=warning msg="failed to get OOM event from sandbox" error="Dead agent" pid=3121 sandbox=404943e0a7e1872b1b521abddaed8d6a5b490bd8a829ec6425b3c5f6e81c5528 source=containerd-kata-shim-v2 ```

---

Container manager details

# Container manager details

Docker

## Docker

docker version

``` Client: Version: 19.03.11 API version: 1.40 Go version: go1.14.3 Git commit: 42e35e6 Built: Sun Jun 7 21:16:58 2020 OS/Arch: linux/amd64 Experimental: false Server: Engine: Version: 19.03.11 API version: 1.40 (minimum version 1.12) Go version: go1.14.3 Git commit: 42e35e6 Built: Sun Jun 7 00:00:00 2020 OS/Arch: linux/amd64 Experimental: false containerd: Version: 1.3.3 GitCommit: runc: Version: 1.0.0-rc10+dev GitCommit: fbdbaf85ecbc0e077f336c03062710435607dbf1 docker-init: Version: 0.18.0 GitCommit: ```

docker info

``` Client: Debug Mode: false Server: Containers: 0 Running: 0 Paused: 0 Stopped: 0 Images: 14 Server Version: 19.03.11 Storage Driver: overlay2 Backing Filesystem: extfs Supports d_type: true Native Overlay Diff: true Logging Driver: journald Cgroup Driver: systemd Plugins: Volume: local Network: bridge host ipvlan macvlan null overlay Log: awslogs fluentd gcplogs gelf journald json-file local logentries splunk syslog Swarm: inactive Runtimes: runc Default Runtime: runc Init Binary: /usr/libexec/docker/docker-init containerd version: runc version: fbdbaf85ecbc0e077f336c03062710435607dbf1 init version: Security Options: seccomp Profile: default selinux Kernel Version: 5.8.10-200.fc32.x86_64 Operating System: Fedora 32 (Workstation Edition) OSType: linux Architecture: x86_64 CPUs: 4 Total Memory: 7.768GiB Name: ibm-p8-kvm-03-guest-02.virt.pnr.lab.eng.rdu2.redhat.com ID: XRLG:G55R:3BBU:SKRG:LZ4J:R26P:2DWE:6KI6:Y5LM:CID2:D7VZ:R2PU Docker Root Dir: /var/lib/docker Debug Mode: false Registry: https://index.docker.io/v1/ Labels: Experimental: false Insecure Registries: 127.0.0.0/8 Live Restore Enabled: true ```

systemctl show docker

``` Type=notify Restart=on-failure NotifyAccess=main RestartUSec=100ms TimeoutStartUSec=infinity TimeoutStopUSec=1min 30s TimeoutAbortUSec=1min 30s RuntimeMaxUSec=infinity WatchdogUSec=0 WatchdogTimestampMonotonic=0 RootDirectoryStartOnly=no RemainAfterExit=no GuessMainPID=yes MainPID=893 ControlPID=0 FileDescriptorStoreMax=0 NFileDescriptorStore=0 StatusErrno=0 Result=success ReloadResult=success CleanResult=success UID=[not set] GID=[not set] NRestarts=0 OOMPolicy=stop ExecMainStartTimestamp=Wed 2020-09-30 22:22:44 IDT ExecMainStartTimestampMonotonic=4086678 ExecMainExitTimestampMonotonic=0 ExecMainPID=893 ExecMainCode=0 ExecMainStatus=0 ExecStart={ path=/usr/bin/dockerd ; argv[]=/usr/bin/dockerd --host=fd:// --exec-opt native.cgroupdriver=systemd $OPTIONS ; ignore_errors=no ; start_time=[Wed 2020-09-30 22:22:44 IDT] ; stop_time=[n/a] ; pid=893 ; code=(null) ; status=0/0 } ExecStartEx={ path=/usr/bin/dockerd ; argv[]=/usr/bin/dockerd --host=fd:// --exec-opt native.cgroupdriver=systemd $OPTIONS ; flags= ; start_time=[Wed 2020-09-30 22:22:44 IDT] ; stop_time=[n/a] ; pid=893 ; code=(null) ; status=0/0 } ExecReload={ path=/bin/kill ; argv[]=/bin/kill -s HUP $MAINPID ; ignore_errors=no ; start_time=[n/a] ; stop_time=[n/a] ; pid=0 ; code=(null) ; status=0/0 } ExecReloadEx={ path=/bin/kill ; argv[]=/bin/kill -s HUP $MAINPID ; flags= ; start_time=[n/a] ; stop_time=[n/a] ; pid=0 ; code=(null) ; status=0/0 } Slice=system.slice ControlGroup=/system.slice/docker.service MemoryCurrent=182820864 CPUUsageNSec=[not set] EffectiveCPUs= EffectiveMemoryNodes= TasksCurrent=22 IPIngressBytes=[no data] IPIngressPackets=[no data] IPEgressBytes=[no data] IPEgressPackets=[no data] IOReadBytes=18446744073709551615 IOReadOperations=18446744073709551615 IOWriteBytes=18446744073709551615 IOWriteOperations=18446744073709551615 Delegate=no CPUAccounting=no CPUWeight=[not set] StartupCPUWeight=[not set] CPUShares=[not set] StartupCPUShares=[not set] CPUQuotaPerSecUSec=infinity CPUQuotaPeriodUSec=infinity AllowedCPUs= AllowedMemoryNodes= IOAccounting=no IOWeight=[not set] StartupIOWeight=[not set] BlockIOAccounting=no BlockIOWeight=[not set] StartupBlockIOWeight=[not set] MemoryAccounting=yes DefaultMemoryLow=0 DefaultMemoryMin=0 MemoryMin=0 MemoryLow=0 MemoryHigh=infinity MemoryMax=infinity MemorySwapMax=infinity MemoryLimit=infinity DevicePolicy=auto TasksAccounting=yes TasksMax=9501 IPAccounting=no EnvironmentFiles=/etc/sysconfig/docker (ignore_errors=yes) UMask=0022 LimitCPU=infinity LimitCPUSoft=infinity LimitFSIZE=infinity LimitFSIZESoft=infinity LimitDATA=infinity LimitDATASoft=infinity LimitSTACK=infinity LimitSTACKSoft=8388608 LimitCORE=infinity LimitCORESoft=infinity LimitRSS=infinity LimitRSSSoft=infinity LimitNOFILE=infinity LimitNOFILESoft=infinity LimitAS=infinity LimitASSoft=infinity LimitNPROC=infinity LimitNPROCSoft=infinity LimitMEMLOCK=65536 LimitMEMLOCKSoft=65536 LimitLOCKS=infinity LimitLOCKSSoft=infinity LimitSIGPENDING=31671 LimitSIGPENDINGSoft=31671 LimitMSGQUEUE=819200 LimitMSGQUEUESoft=819200 LimitNICE=0 LimitNICESoft=0 LimitRTPRIO=0 LimitRTPRIOSoft=0 LimitRTTIME=infinity LimitRTTIMESoft=infinity OOMScoreAdjust=0 Nice=0 IOSchedulingClass=0 IOSchedulingPriority=0 CPUSchedulingPolicy=0 CPUSchedulingPriority=0 CPUAffinity= CPUAffinityFromNUMA=no NUMAPolicy=n/a NUMAMask= TimerSlackNSec=50000 CPUSchedulingResetOnFork=no NonBlocking=no StandardInput=null StandardInputData= StandardOutput=journal StandardError=inherit TTYReset=no TTYVHangup=no TTYVTDisallocate=no SyslogPriority=30 SyslogLevelPrefix=yes SyslogLevel=6 SyslogFacility=3 LogLevelMax=-1 LogRateLimitIntervalUSec=0 LogRateLimitBurst=0 SecureBits=0 CapabilityBoundingSet=cap_chown cap_dac_override cap_dac_read_search cap_fowner cap_fsetid cap_kill cap_setgid cap_setuid cap_setpcap cap_linux_immutable cap_net_bind_service cap_net_broadcast cap_net_admin cap_net_raw cap_ipc_lock cap_ipc_owner cap_sys_module cap_sys_rawio cap_sys_chroot cap_sys_ptrace cap_sys_pacct cap_sys_admin cap_sys_boot cap_sys_nice cap_sys_resource cap_sys_time cap_sys_tty_config cap_mknod cap_lease cap_audit_write cap_audit_control cap_setfcap cap_mac_override cap_mac_admin cap_syslog cap_wake_alarm cap_block_suspend cap_audit_read cap_perfmon cap_bpf AmbientCapabilities= DynamicUser=no RemoveIPC=no MountFlags= PrivateTmp=no PrivateDevices=no ProtectClock=no ProtectKernelTunables=no ProtectKernelModules=no ProtectKernelLogs=no ProtectControlGroups=no PrivateNetwork=no PrivateUsers=no PrivateMounts=no ProtectHome=no ProtectSystem=no SameProcessGroup=no UtmpMode=init IgnoreSIGPIPE=yes NoNewPrivileges=no SystemCallErrorNumber=0 LockPersonality=no RuntimeDirectoryPreserve=no RuntimeDirectoryMode=0755 StateDirectoryMode=0755 CacheDirectoryMode=0755 LogsDirectoryMode=0755 ConfigurationDirectoryMode=0755 TimeoutCleanUSec=infinity MemoryDenyWriteExecute=no RestrictRealtime=no RestrictSUIDSGID=no RestrictNamespaces=no MountAPIVFS=no KeyringMode=private ProtectHostname=no KillMode=process KillSignal=15 RestartKillSignal=15 FinalKillSignal=9 SendSIGKILL=yes SendSIGHUP=no WatchdogSignal=6 Id=docker.service Names=docker.service Requires=docker.socket system.slice sysinit.target Wants=network-online.target ConsistsOf=docker.socket Conflicts=shutdown.target Before=shutdown.target After=systemd-journald.socket network-online.target firewalld.service system.slice docker.socket sysinit.target basic.target TriggeredBy=docker.socket Documentation=https://docs.docker.com Description=Docker Application Container Engine LoadState=loaded ActiveState=active SubState=running FragmentPath=/usr/lib/systemd/system/docker.service UnitFileState=disabled UnitFilePreset=disabled StateChangeTimestamp=Wed 2020-09-30 22:22:45 IDT StateChangeTimestampMonotonic=4939538 InactiveExitTimestamp=Wed 2020-09-30 22:22:44 IDT InactiveExitTimestampMonotonic=4086839 ActiveEnterTimestamp=Wed 2020-09-30 22:22:45 IDT ActiveEnterTimestampMonotonic=4939538 ActiveExitTimestampMonotonic=0 InactiveEnterTimestampMonotonic=0 CanStart=yes CanStop=yes CanReload=yes CanIsolate=no StopWhenUnneeded=no RefuseManualStart=no RefuseManualStop=no AllowIsolate=no DefaultDependencies=yes OnFailureJobMode=replace IgnoreOnIsolate=no NeedDaemonReload=no JobTimeoutUSec=infinity JobRunningTimeoutUSec=infinity JobTimeoutAction=none ConditionResult=yes AssertResult=yes ConditionTimestamp=Wed 2020-09-30 22:22:44 IDT ConditionTimestampMonotonic=4085880 AssertTimestamp=Wed 2020-09-30 22:22:44 IDT AssertTimestampMonotonic=4085881 Transient=no Perpetual=no StartLimitIntervalUSec=1min StartLimitBurst=3 StartLimitAction=none FailureAction=none SuccessAction=none InvocationID=3d4319512a91424095b8b0edcaa817bf CollectMode=inactive ```

Kubernetes

## Kubernetes

kubectl version

``` Client Version: version.Info{Major:"1", Minor:"19", GitVersion:"v1.19.2", GitCommit:"f5743093fd1c663cb0cbc89748f730662345d44d", GitTreeState:"clean", BuildDate:"2020-09-16T13:41:02Z", GoVersion:"go1.15", Compiler:"gc", Platform:"linux/amd64"} Server Version: version.Info{Major:"1", Minor:"19", GitVersion:"v1.19.2", GitCommit:"f5743093fd1c663cb0cbc89748f730662345d44d", GitTreeState:"clean", BuildDate:"2020-09-16T13:32:58Z", GoVersion:"go1.15", Compiler:"gc", Platform:"linux/amd64"} ```

kubectl config view

``` apiVersion: v1 clusters: - cluster: certificate-authority-data: DATA+OMITTED server: https://10.0.2.15:6443 name: kubernetes contexts: - context: cluster: kubernetes user: kubernetes-admin name: kubernetes-admin@kubernetes current-context: kubernetes-admin@kubernetes kind: Config preferences: {} users: - name: kubernetes-admin user: client-certificate-data: REDACTED client-key-data: REDACTED ```

systemctl show kubelet

``` Type=simple Restart=always NotifyAccess=none RestartUSec=10s TimeoutStartUSec=1min 30s TimeoutStopUSec=1min 30s TimeoutAbortUSec=1min 30s RuntimeMaxUSec=infinity WatchdogUSec=0 WatchdogTimestampMonotonic=0 RootDirectoryStartOnly=no RemainAfterExit=no GuessMainPID=yes MainPID=803 ControlPID=0 FileDescriptorStoreMax=0 NFileDescriptorStore=0 StatusErrno=0 Result=success ReloadResult=success CleanResult=success UID=[not set] GID=[not set] NRestarts=0 OOMPolicy=stop ExecMainStartTimestamp=Wed 2020-09-30 22:22:44 IDT ExecMainStartTimestampMonotonic=3850045 ExecMainExitTimestampMonotonic=0 ExecMainPID=803 ExecMainCode=0 ExecMainStatus=0 ExecStart={ path=/usr/bin/kubelet ; argv[]=/usr/bin/kubelet $KUBELET_KUBECONFIG_ARGS $KUBELET_CONFIG_ARGS $KUBELET_KUBEADM_ARGS $KUBELET_EXTRA_ARGS ; ignore_errors=no ; start_time=[Wed 2020-09-30 22:22:44 IDT] ; stop_time=[n/a] ; pid=803 ; code=(null) ; status=0/0 } ExecStartEx={ path=/usr/bin/kubelet ; argv[]=/usr/bin/kubelet $KUBELET_KUBECONFIG_ARGS $KUBELET_CONFIG_ARGS $KUBELET_KUBEADM_ARGS $KUBELET_EXTRA_ARGS ; flags= ; start_time=[Wed 2020-09-30 22:22:44 IDT] ; stop_time=[n/a] ; pid=803 ; code=(null) ; status=0/0 } Slice=system.slice ControlGroup=/system.slice/kubelet.service MemoryCurrent=119443456 CPUUsageNSec=[not set] EffectiveCPUs= EffectiveMemoryNodes= TasksCurrent=18 IPIngressBytes=[no data] IPIngressPackets=[no data] IPEgressBytes=[no data] IPEgressPackets=[no data] IOReadBytes=18446744073709551615 IOReadOperations=18446744073709551615 IOWriteBytes=18446744073709551615 IOWriteOperations=18446744073709551615 Delegate=no CPUAccounting=no CPUWeight=[not set] StartupCPUWeight=[not set] CPUShares=[not set] StartupCPUShares=[not set] CPUQuotaPerSecUSec=infinity CPUQuotaPeriodUSec=infinity AllowedCPUs= AllowedMemoryNodes= IOAccounting=no IOWeight=[not set] StartupIOWeight=[not set] BlockIOAccounting=no BlockIOWeight=[not set] StartupBlockIOWeight=[not set] MemoryAccounting=yes DefaultMemoryLow=0 DefaultMemoryMin=0 MemoryMin=0 MemoryLow=0 MemoryHigh=infinity MemoryMax=infinity MemorySwapMax=infinity MemoryLimit=infinity DevicePolicy=auto TasksAccounting=yes TasksMax=9501 IPAccounting=no Environment=[unprintable] KUBELET_CONFIG_ARGS=--config=/var/lib/kubelet/config.yaml EnvironmentFiles=/var/lib/kubelet/kubeadm-flags.env (ignore_errors=yes) EnvironmentFiles=/etc/sysconfig/kubelet (ignore_errors=yes) UMask=0022 LimitCPU=infinity LimitCPUSoft=infinity LimitFSIZE=infinity LimitFSIZESoft=infinity LimitDATA=infinity LimitDATASoft=infinity LimitSTACK=infinity LimitSTACKSoft=8388608 LimitCORE=infinity LimitCORESoft=infinity LimitRSS=infinity LimitRSSSoft=infinity LimitNOFILE=524288 LimitNOFILESoft=1024 LimitAS=infinity LimitASSoft=infinity LimitNPROC=31671 LimitNPROCSoft=31671 LimitMEMLOCK=65536 LimitMEMLOCKSoft=65536 LimitLOCKS=infinity LimitLOCKSSoft=infinity LimitSIGPENDING=31671 LimitSIGPENDINGSoft=31671 LimitMSGQUEUE=819200 LimitMSGQUEUESoft=819200 LimitNICE=0 LimitNICESoft=0 LimitRTPRIO=0 LimitRTPRIOSoft=0 LimitRTTIME=infinity LimitRTTIMESoft=infinity OOMScoreAdjust=0 Nice=0 IOSchedulingClass=0 IOSchedulingPriority=0 CPUSchedulingPolicy=0 CPUSchedulingPriority=0 CPUAffinity= CPUAffinityFromNUMA=no NUMAPolicy=n/a NUMAMask= TimerSlackNSec=50000 CPUSchedulingResetOnFork=no NonBlocking=no StandardInput=null StandardInputData= StandardOutput=journal StandardError=inherit TTYReset=no TTYVHangup=no TTYVTDisallocate=no SyslogPriority=30 SyslogLevelPrefix=yes SyslogLevel=6 SyslogFacility=3 LogLevelMax=-1 LogRateLimitIntervalUSec=0 LogRateLimitBurst=0 SecureBits=0 CapabilityBoundingSet=cap_chown cap_dac_override cap_dac_read_search cap_fowner cap_fsetid cap_kill cap_setgid cap_setuid cap_setpcap cap_linux_immutable cap_net_bind_service cap_net_broadcast cap_net_admin cap_net_raw cap_ipc_lock cap_ipc_owner cap_sys_module cap_sys_rawio cap_sys_chroot cap_sys_ptrace cap_sys_pacct cap_sys_admin cap_sys_boot cap_sys_nice cap_sys_resource cap_sys_time cap_sys_tty_config cap_mknod cap_lease cap_audit_write cap_audit_control cap_setfcap cap_mac_override cap_mac_admin cap_syslog cap_wake_alarm cap_block_suspend cap_audit_read cap_perfmon cap_bpf AmbientCapabilities= DynamicUser=no RemoveIPC=no MountFlags= PrivateTmp=no PrivateDevices=no ProtectClock=no ProtectKernelTunables=no ProtectKernelModules=no ProtectKernelLogs=no ProtectControlGroups=no PrivateNetwork=no PrivateUsers=no PrivateMounts=no ProtectHome=no ProtectSystem=no SameProcessGroup=no UtmpMode=init IgnoreSIGPIPE=yes NoNewPrivileges=no SystemCallErrorNumber=0 LockPersonality=no RuntimeDirectoryPreserve=no RuntimeDirectoryMode=0755 StateDirectoryMode=0755 CacheDirectoryMode=0755 LogsDirectoryMode=0755 ConfigurationDirectoryMode=0755 TimeoutCleanUSec=infinity MemoryDenyWriteExecute=no RestrictRealtime=no RestrictSUIDSGID=no RestrictNamespaces=no MountAPIVFS=no KeyringMode=private ProtectHostname=no KillMode=control-group KillSignal=15 RestartKillSignal=15 FinalKillSignal=9 SendSIGKILL=yes SendSIGHUP=no WatchdogSignal=6 Id=kubelet.service Names=kubelet.service Requires=sysinit.target system.slice Wants=network-online.target WantedBy=multi-user.target Conflicts=shutdown.target Before=shutdown.target multi-user.target After=sysinit.target basic.target network-online.target system.slice systemd-journald.socket Documentation=https://kubernetes.io/docs/ Description=kubelet: The Kubernetes Node Agent LoadState=loaded ActiveState=active SubState=running FragmentPath=/usr/lib/systemd/system/kubelet.service DropInPaths=/usr/lib/systemd/system/kubelet.service.d/10-kubeadm.conf UnitFileState=enabled UnitFilePreset=disabled StateChangeTimestamp=Wed 2020-09-30 22:22:44 IDT StateChangeTimestampMonotonic=3850184 InactiveExitTimestamp=Wed 2020-09-30 22:22:44 IDT InactiveExitTimestampMonotonic=3850184 ActiveEnterTimestamp=Wed 2020-09-30 22:22:44 IDT ActiveEnterTimestampMonotonic=3850184 ActiveExitTimestampMonotonic=0 InactiveEnterTimestampMonotonic=0 CanStart=yes CanStop=yes CanReload=no CanIsolate=no StopWhenUnneeded=no RefuseManualStart=no RefuseManualStop=no AllowIsolate=no DefaultDependencies=yes OnFailureJobMode=replace IgnoreOnIsolate=no NeedDaemonReload=no JobTimeoutUSec=infinity JobRunningTimeoutUSec=infinity JobTimeoutAction=none ConditionResult=yes AssertResult=yes ConditionTimestamp=Wed 2020-09-30 22:22:44 IDT ConditionTimestampMonotonic=3849032 AssertTimestamp=Wed 2020-09-30 22:22:44 IDT AssertTimestampMonotonic=3849033 Transient=no Perpetual=no StartLimitIntervalUSec=0 StartLimitBurst=5 StartLimitAction=none FailureAction=none SuccessAction=none InvocationID=09529c0464d240349c8d2e7dc0a93bfa CollectMode=inactive ```

crio

## crio

crio --version

``` crio version 1.18.3 Version: 1.18.3 GitCommit: 61de18161fb4ccda720768c001713592b5a04e46 GitTreeState: clean BuildDate: 2020-08-05T09:40:33Z GoVersion: go1.14.6 Compiler: gc Platform: linux/amd64 Linkmode: dynamic ```

systemctl show crio

``` Type=notify Restart=on-abnormal NotifyAccess=main RestartUSec=100ms TimeoutStartUSec=infinity TimeoutStopUSec=1min 30s TimeoutAbortUSec=1min 30s RuntimeMaxUSec=infinity WatchdogUSec=0 WatchdogTimestampMonotonic=0 RootDirectoryStartOnly=no RemainAfterExit=no GuessMainPID=yes MainPID=801 ControlPID=0 FileDescriptorStoreMax=0 NFileDescriptorStore=0 StatusErrno=0 Result=success ReloadResult=success CleanResult=success UID=[not set] GID=[not set] NRestarts=0 OOMPolicy=stop ExecMainStartTimestamp=Wed 2020-09-30 22:22:44 IDT ExecMainStartTimestampMonotonic=3848317 ExecMainExitTimestampMonotonic=0 ExecMainPID=801 ExecMainCode=0 ExecMainStatus=0 ExecStart={ path=/usr/bin/crio ; argv[]=/usr/bin/crio $CRIO_CONFIG_OPTIONS $CRIO_RUNTIME_OPTIONS $CRIO_STORAGE_OPTIONS $CRIO_NETWORK_OPTIONS $CRIO_METRICS_OPTIONS ; ignore_errors=no ; start_time=[Wed 2020-09-30 22:22:44 IDT] ; stop_time=[n/a] ; pid=801 ; code=(null) ; status=0/0 } ExecStartEx={ path=/usr/bin/crio ; argv[]=/usr/bin/crio $CRIO_CONFIG_OPTIONS $CRIO_RUNTIME_OPTIONS $CRIO_STORAGE_OPTIONS $CRIO_NETWORK_OPTIONS $CRIO_METRICS_OPTIONS ; flags= ; start_time=[Wed 2020-09-30 22:22:44 IDT] ; stop_time=[n/a] ; pid=801 ; code=(null) ; status=0/0 } ExecReload={ path=/bin/kill ; argv[]=/bin/kill -s HUP $MAINPID ; ignore_errors=no ; start_time=[n/a] ; stop_time=[n/a] ; pid=0 ; code=(null) ; status=0/0 } ExecReloadEx={ path=/bin/kill ; argv[]=/bin/kill -s HUP $MAINPID ; flags= ; start_time=[n/a] ; stop_time=[n/a] ; pid=0 ; code=(null) ; status=0/0 } Slice=system.slice ControlGroup=/system.slice/crio.service MemoryCurrent=191782912 CPUUsageNSec=[not set] EffectiveCPUs= EffectiveMemoryNodes= TasksCurrent=12 IPIngressBytes=[no data] IPIngressPackets=[no data] IPEgressBytes=[no data] IPEgressPackets=[no data] IOReadBytes=18446744073709551615 IOReadOperations=18446744073709551615 IOWriteBytes=18446744073709551615 IOWriteOperations=18446744073709551615 Delegate=no CPUAccounting=no CPUWeight=[not set] StartupCPUWeight=[not set] CPUShares=[not set] StartupCPUShares=[not set] CPUQuotaPerSecUSec=infinity CPUQuotaPeriodUSec=infinity AllowedCPUs= AllowedMemoryNodes= IOAccounting=no IOWeight=[not set] StartupIOWeight=[not set] BlockIOAccounting=no BlockIOWeight=[not set] StartupBlockIOWeight=[not set] MemoryAccounting=yes DefaultMemoryLow=0 DefaultMemoryMin=0 MemoryMin=0 MemoryLow=0 MemoryHigh=infinity MemoryMax=infinity MemorySwapMax=infinity MemoryLimit=infinity DevicePolicy=auto TasksAccounting=yes TasksMax=infinity IPAccounting=no Environment=GOTRACEBACK=crash EnvironmentFiles=/etc/sysconfig/crio (ignore_errors=yes) UMask=0022 LimitCPU=infinity LimitCPUSoft=infinity LimitFSIZE=infinity LimitFSIZESoft=infinity LimitDATA=infinity LimitDATASoft=infinity LimitSTACK=infinity LimitSTACKSoft=8388608 LimitCORE=infinity LimitCORESoft=infinity LimitRSS=infinity LimitRSSSoft=infinity LimitNOFILE=1048576 LimitNOFILESoft=1048576 LimitAS=infinity LimitASSoft=infinity LimitNPROC=1048576 LimitNPROCSoft=1048576 LimitMEMLOCK=65536 LimitMEMLOCKSoft=65536 LimitLOCKS=infinity LimitLOCKSSoft=infinity LimitSIGPENDING=31671 LimitSIGPENDINGSoft=31671 LimitMSGQUEUE=819200 LimitMSGQUEUESoft=819200 LimitNICE=0 LimitNICESoft=0 LimitRTPRIO=0 LimitRTPRIOSoft=0 LimitRTTIME=infinity LimitRTTIMESoft=infinity OOMScoreAdjust=-999 Nice=0 IOSchedulingClass=0 IOSchedulingPriority=0 CPUSchedulingPolicy=0 CPUSchedulingPriority=0 CPUAffinity= CPUAffinityFromNUMA=no NUMAPolicy=n/a NUMAMask= TimerSlackNSec=50000 CPUSchedulingResetOnFork=no NonBlocking=no StandardInput=null StandardInputData= StandardOutput=journal StandardError=inherit TTYReset=no TTYVHangup=no TTYVTDisallocate=no SyslogPriority=30 SyslogLevelPrefix=yes SyslogLevel=6 SyslogFacility=3 LogLevelMax=-1 LogRateLimitIntervalUSec=0 LogRateLimitBurst=0 SecureBits=0 CapabilityBoundingSet=cap_chown cap_dac_override cap_dac_read_search cap_fowner cap_fsetid cap_kill cap_setgid cap_setuid cap_setpcap cap_linux_immutable cap_net_bind_service cap_net_broadcast cap_net_admin cap_net_raw cap_ipc_lock cap_ipc_owner cap_sys_module cap_sys_rawio cap_sys_chroot cap_sys_ptrace cap_sys_pacct cap_sys_admin cap_sys_boot cap_sys_nice cap_sys_resource cap_sys_time cap_sys_tty_config cap_mknod cap_lease cap_audit_write cap_audit_control cap_setfcap cap_mac_override cap_mac_admin cap_syslog cap_wake_alarm cap_block_suspend cap_audit_read cap_perfmon cap_bpf AmbientCapabilities= DynamicUser=no RemoveIPC=no MountFlags= PrivateTmp=no PrivateDevices=no ProtectClock=no ProtectKernelTunables=no ProtectKernelModules=no ProtectKernelLogs=no ProtectControlGroups=no PrivateNetwork=no PrivateUsers=no PrivateMounts=no ProtectHome=no ProtectSystem=no SameProcessGroup=no UtmpMode=init IgnoreSIGPIPE=yes NoNewPrivileges=no SystemCallErrorNumber=0 LockPersonality=no RuntimeDirectoryPreserve=no RuntimeDirectoryMode=0755 StateDirectoryMode=0755 CacheDirectoryMode=0755 LogsDirectoryMode=0755 ConfigurationDirectoryMode=0755 TimeoutCleanUSec=infinity MemoryDenyWriteExecute=no RestrictRealtime=no RestrictSUIDSGID=no RestrictNamespaces=no MountAPIVFS=no KeyringMode=private ProtectHostname=no KillMode=control-group KillSignal=15 RestartKillSignal=15 FinalKillSignal=9 SendSIGKILL=yes SendSIGHUP=no WatchdogSignal=6 Id=crio.service Names=cri-o.service crio.service Requires=sysinit.target system.slice Wants=network-online.target WantedBy=multi-user.target Conflicts=shutdown.target Before=shutdown.target multi-user.target After=network-online.target sysinit.target basic.target systemd-journald.socket system.slice Documentation=https://github.com/cri-o/cri-o Description=Container Runtime Interface for OCI (CRI-O) LoadState=loaded ActiveState=active SubState=running FragmentPath=/usr/lib/systemd/system/crio.service UnitFileState=enabled UnitFilePreset=disabled StateChangeTimestamp=Wed 2020-09-30 22:22:45 IDT StateChangeTimestampMonotonic=4651372 InactiveExitTimestamp=Wed 2020-09-30 22:22:44 IDT InactiveExitTimestampMonotonic=3848460 ActiveEnterTimestamp=Wed 2020-09-30 22:22:45 IDT ActiveEnterTimestampMonotonic=4651372 ActiveExitTimestampMonotonic=0 InactiveEnterTimestampMonotonic=0 CanStart=yes CanStop=yes CanReload=yes CanIsolate=no StopWhenUnneeded=no RefuseManualStart=no RefuseManualStop=no AllowIsolate=no DefaultDependencies=yes OnFailureJobMode=replace IgnoreOnIsolate=no NeedDaemonReload=no JobTimeoutUSec=infinity JobRunningTimeoutUSec=infinity JobTimeoutAction=none ConditionResult=yes AssertResult=yes ConditionTimestamp=Wed 2020-09-30 22:22:44 IDT ConditionTimestampMonotonic=3847417 AssertTimestamp=Wed 2020-09-30 22:22:44 IDT AssertTimestampMonotonic=3847417 Transient=no Perpetual=no StartLimitIntervalUSec=10s StartLimitBurst=5 StartLimitAction=none FailureAction=none SuccessAction=none InvocationID=d0a58652db814ebba83977b20fe66073 CollectMode=inactive ```

crio config

``` level=info msg="Using default capabilities: CAP_CHOWN, CAP_DAC_OVERRIDE, CAP_FSETID, CAP_FOWNER, CAP_SETGID, CAP_SETUID, CAP_SETPCAP, CAP_NET_BIND_SERVICE, CAP_KILL" # The CRI-O configuration file specifies all of the available configuration # options and command-line flags for the crio(8) OCI Kubernetes Container Runtime # daemon, but in a TOML format that can be more easily modified and versioned. # # Please refer to crio.conf(5) for details of all configuration options. # CRI-O supports partial configuration reload during runtime, which can be # done by sending SIGHUP to the running process. Currently supported options # are explicitly mentioned with: 'This option supports live configuration # reload'. # CRI-O reads its storage defaults from the containers-storage.conf(5) file # located at /etc/containers/storage.conf. Modify this storage configuration if # you want to change the system's defaults. If you want to modify storage just # for CRI-O, you can change the storage configuration options here. [crio] # Path to the "root directory". CRI-O stores all of its data, including # containers images, in this directory. #root = "/var/lib/containers/storage" # Path to the "run directory". CRI-O stores all of its state in this directory. #runroot = "/var/run/containers/storage" # Storage driver used to manage the storage of images and containers. Please # refer to containers-storage.conf(5) to see all available storage drivers. #storage_driver = "overlay" # List to pass options to the storage driver. Please refer to # containers-storage.conf(5) to see all available storage options. #storage_option = [ # "overlay.mountopt=nodev", #] # The default log directory where all logs will go unless directly specified by # the kubelet. The log directory specified must be an absolute directory. log_dir = "/var/log/crio/pods" # Location for CRI-O to lay down the temporary version file. # It is used to check if crio wipe should wipe containers, which should # always happen on a node reboot version_file = "/var/run/crio/version" # Location for CRI-O to lay down the persistent version file. # It is used to check if crio wipe should wipe images, which should # only happen when CRI-O has been upgraded version_file_persist = "/var/lib/crio/version" # The crio.api table contains settings for the kubelet/gRPC interface. [crio.api] # Path to AF_LOCAL socket on which CRI-O will listen. listen = "/var/run/crio/crio.sock" # IP address on which the stream server will listen. stream_address = "127.0.0.1" # The port on which the stream server will listen. If the port is set to "0", then # CRI-O will allocate a random free port number. stream_port = "0" # Enable encrypted TLS transport of the stream server. stream_enable_tls = false # Path to the x509 certificate file used to serve the encrypted stream. This # file can change, and CRI-O will automatically pick up the changes within 5 # minutes. stream_tls_cert = "" # Path to the key file used to serve the encrypted stream. This file can # change and CRI-O will automatically pick up the changes within 5 minutes. stream_tls_key = "" # Path to the x509 CA(s) file used to verify and authenticate client # communication with the encrypted stream. This file can change and CRI-O will # automatically pick up the changes within 5 minutes. stream_tls_ca = "" # Maximum grpc send message size in bytes. If not set or <=0, then CRI-O will default to 16 * 1024 * 1024. grpc_max_send_msg_size = 16777216 # Maximum grpc receive message size. If not set or <= 0, then CRI-O will default to 16 * 1024 * 1024. grpc_max_recv_msg_size = 16777216 # The crio.runtime table contains settings pertaining to the OCI runtime used # and options for how to set up and manage the OCI runtime. [crio.runtime] # A list of ulimits to be set in containers by default, specified as # "=:", for example: # "nofile=1024:2048" # If nothing is set here, settings will be inherited from the CRI-O daemon #default_ulimits = [ #] # default_runtime is the _name_ of the OCI runtime to be used as the default. # The name is matched against the runtimes map below. default_runtime = "runc" # If true, the runtime will not use pivot_root, but instead use MS_MOVE. no_pivot = false # decryption_keys_path is the path where the keys required for # image decryption are stored. This option supports live configuration reload. decryption_keys_path = "/etc/crio/keys/" # Path to the conmon binary, used for monitoring the OCI runtime. # Will be searched for using $PATH if empty. conmon = "" # Cgroup setting for conmon conmon_cgroup = "system.slice" # Environment variable list for the conmon process, used for passing necessary # environment variables to conmon or the runtime. conmon_env = [ "PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin", ] # Additional environment variables to set for all the # containers. These are overridden if set in the # container image spec or in the container runtime configuration. default_env = [ ] # If true, SELinux will be used for pod separation on the host. selinux = true # Path to the seccomp.json profile which is used as the default seccomp profile # for the runtime. If not specified, then the internal default seccomp profile # will be used. This option supports live configuration reload. seccomp_profile = "" # Used to change the name of the default AppArmor profile of CRI-O. The default # profile name is "crio-default". This profile only takes effect if the user # does not specify a profile via the Kubernetes Pod's metadata annotation. If # the profile is set to "unconfined", then this equals to disabling AppArmor. # This option supports live configuration reload. apparmor_profile = "crio-default" # Cgroup management implementation used for the runtime. cgroup_manager = "systemd" # List of default capabilities for containers. If it is empty or commented out, # only the capabilities defined in the containers json file by the user/kube # will be added. default_capabilities = [ "CHOWN", "DAC_OVERRIDE", "FSETID", "FOWNER", "SETGID", "SETUID", "SETPCAP", "NET_BIND_SERVICE", "KILL", ] # List of default sysctls. If it is empty or commented out, only the sysctls # defined in the container json file by the user/kube will be added. default_sysctls = [ ] # List of additional devices. specified as # "::", for example: "--device=/dev/sdc:/dev/xvdc:rwm". #If it is empty or commented out, only the devices # defined in the container json file by the user/kube will be added. additional_devices = [ ] # Path to OCI hooks directories for automatically executed hooks. If one of the # directories does not exist, then CRI-O will automatically skip them. hooks_dir = [ "/usr/share/containers/oci/hooks.d", ] # List of default mounts for each container. **Deprecated:** this option will # be removed in future versions in favor of default_mounts_file. default_mounts = [ ] # Path to the file specifying the defaults mounts for each container. The # format of the config is /SRC:/DST, one mount per line. Notice that CRI-O reads # its default mounts from the following two files: # # 1) /etc/containers/mounts.conf (i.e., default_mounts_file): This is the # override file, where users can either add in their own default mounts, or # override the default mounts shipped with the package. # # 2) /usr/share/containers/mounts.conf: This is the default file read for # mounts. If you want CRI-O to read from a different, specific mounts file, # you can change the default_mounts_file. Note, if this is done, CRI-O will # only add mounts it finds in this file. # #default_mounts_file = "" # Maximum number of processes allowed in a container. pids_limit = 1024 # Maximum sized allowed for the container log file. Negative numbers indicate # that no size limit is imposed. If it is positive, it must be >= 8192 to # match/exceed conmon's read buffer. The file is truncated and re-opened so the # limit is never exceeded. log_size_max = -1 # Whether container output should be logged to journald in addition to the kuberentes log file log_to_journald = false # Path to directory in which container exit files are written to by conmon. container_exits_dir = "/var/run/crio/exits" # Path to directory for container attach sockets. container_attach_socket_dir = "/var/run/crio" # The prefix to use for the source of the bind mounts. bind_mount_prefix = "" # If set to true, all containers will run in read-only mode. read_only = false # Changes the verbosity of the logs based on the level it is set to. Options # are fatal, panic, error, warn, info, debug and trace. This option supports # live configuration reload. log_level = "info" # Filter the log messages by the provided regular expression. # This option supports live configuration reload. log_filter = "" # The UID mappings for the user namespace of each container. A range is # specified in the form containerUID:HostUID:Size. Multiple ranges must be # separated by comma. uid_mappings = "" # The GID mappings for the user namespace of each container. A range is # specified in the form containerGID:HostGID:Size. Multiple ranges must be # separated by comma. gid_mappings = "" # The minimal amount of time in seconds to wait before issuing a timeout # regarding the proper termination of the container. The lowest possible # value is 30s, whereas lower values are not considered by CRI-O. ctr_stop_timeout = 30 # **DEPRECATED** this option is being replaced by manage_ns_lifecycle, which is described below. # manage_network_ns_lifecycle = true # manage_ns_lifecycle determines whether we pin and remove namespaces # and manage their lifecycle manage_ns_lifecycle = true # The directory where the state of the managed namespaces gets tracked. # Only used when manage_ns_lifecycle is true. namespaces_dir = "/var/run" # pinns_path is the path to find the pinns binary, which is needed to manage namespace lifecycle pinns_path = "" # The "crio.runtime.runtimes" table defines a list of OCI compatible runtimes. # The runtime to use is picked based on the runtime_handler provided by the CRI. # If no runtime_handler is provided, the runtime will be picked based on the level # of trust of the workload. Each entry in the table should follow the format: # #[crio.runtime.runtimes.runtime-handler] # runtime_path = "/path/to/the/executable" # runtime_type = "oci" # runtime_root = "/path/to/the/root" # # Where: # - runtime-handler: name used to identify the runtime # - runtime_path (optional, string): absolute path to the runtime executable in # the host filesystem. If omitted, the runtime-handler identifier should match # the runtime executable name, and the runtime executable should be placed # in $PATH. # - runtime_type (optional, string): type of runtime, one of: "oci", "vm". If # omitted, an "oci" runtime is assumed. # - runtime_root (optional, string): root directory for storage of containers # state. [crio.runtime.runtimes.kata] runtime_path = "/usr/bin/containerd-shim-kata-v2" runtime_type = "vm" runtime_root = "/run/vc" [crio.runtime.runtimes.runc] runtime_path = "" runtime_type = "oci" runtime_root = "/run/runc" # Kata Containers is an OCI runtime, where containers are run inside lightweight # VMs. Kata provides additional isolation towards the host, minimizing the host attack # surface and mitigating the consequences of containers breakout. # Kata Containers with the default configured VMM #[crio.runtime.runtimes.kata-runtime] # Kata Containers with the QEMU VMM #[crio.runtime.runtimes.kata-qemu] # Kata Containers with the Firecracker VMM #[crio.runtime.runtimes.kata-fc] # The crio.image table contains settings pertaining to the management of OCI images. # # CRI-O reads its configured registries defaults from the system wide # containers-registries.conf(5) located in /etc/containers/registries.conf. If # you want to modify just CRI-O, you can change the registries configuration in # this file. Otherwise, leave insecure_registries and registries commented out to # use the system's defaults from /etc/containers/registries.conf. [crio.image] # Default transport for pulling images from a remote container storage. default_transport = "docker://" # The path to a file containing credentials necessary for pulling images from # secure registries. The file is similar to that of /var/lib/kubelet/config.json global_auth_file = "" # The image used to instantiate infra containers. # This option supports live configuration reload. pause_image = "k8s.gcr.io/pause:3.2" # The path to a file containing credentials specific for pulling the pause_image from # above. The file is similar to that of /var/lib/kubelet/config.json # This option supports live configuration reload. pause_image_auth_file = "" # The command to run to have a container stay in the paused state. # When explicitly set to "", it will fallback to the entrypoint and command # specified in the pause image. When commented out, it will fallback to the # default: "/pause". This option supports live configuration reload. pause_command = "/pause" # Path to the file which decides what sort of policy we use when deciding # whether or not to trust an image that we've pulled. It is not recommended that # this option be used, as the default behavior of using the system-wide default # policy (i.e., /etc/containers/policy.json) is most often preferred. Please # refer to containers-policy.json(5) for more details. signature_policy = "" # List of registries to skip TLS verification for pulling images. Please # consider configuring the registries via /etc/containers/registries.conf before # changing them here. #insecure_registries = "[]" # Controls how image volumes are handled. The valid values are mkdir, bind and # ignore; the latter will ignore volumes entirely. image_volumes = "mkdir" # List of registries to be used when pulling an unqualified image (e.g., # "alpine:latest"). By default, registries is set to "docker.io" for # compatibility reasons. Depending on your workload and usecase you may add more # registries (e.g., "quay.io", "registry.fedoraproject.org", # "registry.opensuse.org", etc.). #registries = [ # ] # The crio.network table containers settings pertaining to the management of # CNI plugins. [crio.network] # The default CNI network name to be selected. If not set or "", then # CRI-O will pick-up the first one found in network_dir. # cni_default_network = "" # Path to the directory where CNI configuration files are located. network_dir = "/etc/cni/net.d/" # Paths to directories where CNI plugin binaries are located. plugin_dirs = [ "/opt/cni/bin", "/usr/libexec/cni", ] # A necessary configuration for Prometheus based metrics retrieval [crio.metrics] # Globally enable or disable metrics support. enable_metrics = false # The port on which the metrics server will listen. metrics_port = 9090 ```

containerd

## containerd

containerd --version

``` containerd github.com/containerd/containerd 1.3.3 ```

systemctl show containerd

``` Type=simple Restart=no NotifyAccess=none RestartUSec=100ms TimeoutStartUSec=1min 30s TimeoutStopUSec=1min 30s TimeoutAbortUSec=1min 30s RuntimeMaxUSec=infinity WatchdogUSec=0 WatchdogTimestampMonotonic=0 RootDirectoryStartOnly=no RemainAfterExit=no GuessMainPID=yes MainPID=0 ControlPID=0 FileDescriptorStoreMax=0 NFileDescriptorStore=0 StatusErrno=0 Result=success ReloadResult=success CleanResult=success UID=[not set] GID=[not set] NRestarts=0 OOMPolicy=continue ExecMainStartTimestampMonotonic=0 ExecMainExitTimestampMonotonic=0 ExecMainPID=0 ExecMainCode=0 ExecMainStatus=0 ExecStartPre={ path=/sbin/modprobe ; argv[]=/sbin/modprobe overlay ; ignore_errors=no ; start_time=[n/a] ; stop_time=[n/a] ; pid=0 ; code=(null) ; status=0/0 } ExecStartPreEx={ path=/sbin/modprobe ; argv[]=/sbin/modprobe overlay ; flags= ; start_time=[n/a] ; stop_time=[n/a] ; pid=0 ; code=(null) ; status=0/0 } ExecStart={ path=/usr/bin/containerd ; argv[]=/usr/bin/containerd ; ignore_errors=no ; start_time=[n/a] ; stop_time=[n/a] ; pid=0 ; code=(null) ; status=0/0 } ExecStartEx={ path=/usr/bin/containerd ; argv[]=/usr/bin/containerd ; flags= ; start_time=[n/a] ; stop_time=[n/a] ; pid=0 ; code=(null) ; status=0/0 } Slice=system.slice MemoryCurrent=[not set] CPUUsageNSec=[not set] EffectiveCPUs= EffectiveMemoryNodes= TasksCurrent=[not set] IPIngressBytes=[no data] IPIngressPackets=[no data] IPEgressBytes=[no data] IPEgressPackets=[no data] IOReadBytes=18446744073709551615 IOReadOperations=18446744073709551615 IOWriteBytes=18446744073709551615 IOWriteOperations=18446744073709551615 Delegate=yes DelegateControllers=cpu cpuacct cpuset io blkio memory devices pids bpf-firewall bpf-devices CPUAccounting=no CPUWeight=[not set] StartupCPUWeight=[not set] CPUShares=[not set] StartupCPUShares=[not set] CPUQuotaPerSecUSec=infinity CPUQuotaPeriodUSec=infinity AllowedCPUs= AllowedMemoryNodes= IOAccounting=no IOWeight=[not set] StartupIOWeight=[not set] BlockIOAccounting=no BlockIOWeight=[not set] StartupBlockIOWeight=[not set] MemoryAccounting=yes DefaultMemoryLow=0 DefaultMemoryMin=0 MemoryMin=0 MemoryLow=0 MemoryHigh=infinity MemoryMax=infinity MemorySwapMax=infinity MemoryLimit=infinity DevicePolicy=auto TasksAccounting=yes TasksMax=9501 IPAccounting=no UMask=0022 LimitCPU=infinity LimitCPUSoft=infinity LimitFSIZE=infinity LimitFSIZESoft=infinity LimitDATA=infinity LimitDATASoft=infinity LimitSTACK=infinity LimitSTACKSoft=8388608 LimitCORE=infinity LimitCORESoft=infinity LimitRSS=infinity LimitRSSSoft=infinity LimitNOFILE=524288 LimitNOFILESoft=1024 LimitAS=infinity LimitASSoft=infinity LimitNPROC=31671 LimitNPROCSoft=31671 LimitMEMLOCK=65536 LimitMEMLOCKSoft=65536 LimitLOCKS=infinity LimitLOCKSSoft=infinity LimitSIGPENDING=31671 LimitSIGPENDINGSoft=31671 LimitMSGQUEUE=819200 LimitMSGQUEUESoft=819200 LimitNICE=0 LimitNICESoft=0 LimitRTPRIO=0 LimitRTPRIOSoft=0 LimitRTTIME=infinity LimitRTTIMESoft=infinity OOMScoreAdjust=0 Nice=0 IOSchedulingClass=0 IOSchedulingPriority=0 CPUSchedulingPolicy=0 CPUSchedulingPriority=0 CPUAffinity= CPUAffinityFromNUMA=no NUMAPolicy=n/a NUMAMask= TimerSlackNSec=50000 CPUSchedulingResetOnFork=no NonBlocking=no StandardInput=null StandardInputData= StandardOutput=journal StandardError=inherit TTYReset=no TTYVHangup=no TTYVTDisallocate=no SyslogPriority=30 SyslogLevelPrefix=yes SyslogLevel=6 SyslogFacility=3 LogLevelMax=-1 LogRateLimitIntervalUSec=0 LogRateLimitBurst=0 SecureBits=0 CapabilityBoundingSet=cap_chown cap_dac_override cap_dac_read_search cap_fowner cap_fsetid cap_kill cap_setgid cap_setuid cap_setpcap cap_linux_immutable cap_net_bind_service cap_net_broadcast cap_net_admin cap_net_raw cap_ipc_lock cap_ipc_owner cap_sys_module cap_sys_rawio cap_sys_chroot cap_sys_ptrace cap_sys_pacct cap_sys_admin cap_sys_boot cap_sys_nice cap_sys_resource cap_sys_time cap_sys_tty_config cap_mknod cap_lease cap_audit_write cap_audit_control cap_setfcap cap_mac_override cap_mac_admin cap_syslog cap_wake_alarm cap_block_suspend cap_audit_read cap_perfmon cap_bpf AmbientCapabilities= DynamicUser=no RemoveIPC=no MountFlags= PrivateTmp=no PrivateDevices=no ProtectClock=no ProtectKernelTunables=no ProtectKernelModules=no ProtectKernelLogs=no ProtectControlGroups=no PrivateNetwork=no PrivateUsers=no PrivateMounts=no ProtectHome=no ProtectSystem=no SameProcessGroup=no UtmpMode=init IgnoreSIGPIPE=yes NoNewPrivileges=no SystemCallErrorNumber=0 LockPersonality=no RuntimeDirectoryPreserve=no RuntimeDirectoryMode=0755 StateDirectoryMode=0755 CacheDirectoryMode=0755 LogsDirectoryMode=0755 ConfigurationDirectoryMode=0755 TimeoutCleanUSec=infinity MemoryDenyWriteExecute=no RestrictRealtime=no RestrictSUIDSGID=no RestrictNamespaces=no MountAPIVFS=no KeyringMode=private ProtectHostname=no KillMode=process KillSignal=15 RestartKillSignal=15 FinalKillSignal=9 SendSIGKILL=yes SendSIGHUP=no WatchdogSignal=6 Id=containerd.service Names=containerd.service Requires=sysinit.target system.slice Conflicts=shutdown.target Before=shutdown.target After=basic.target system.slice sysinit.target systemd-journald.socket network.target Documentation=https://containerd.io Description=containerd container runtime LoadState=loaded ActiveState=inactive SubState=dead FragmentPath=/usr/lib/systemd/system/containerd.service UnitFileState=disabled UnitFilePreset=disabled StateChangeTimestampMonotonic=0 InactiveExitTimestampMonotonic=0 ActiveEnterTimestampMonotonic=0 ActiveExitTimestampMonotonic=0 InactiveEnterTimestampMonotonic=0 CanStart=yes CanStop=yes CanReload=no CanIsolate=no StopWhenUnneeded=no RefuseManualStart=no RefuseManualStop=no AllowIsolate=no DefaultDependencies=yes OnFailureJobMode=replace IgnoreOnIsolate=no NeedDaemonReload=no JobTimeoutUSec=infinity JobRunningTimeoutUSec=infinity JobTimeoutAction=none ConditionResult=no AssertResult=no ConditionTimestampMonotonic=0 AssertTimestampMonotonic=0 Transient=no Perpetual=no StartLimitIntervalUSec=10s StartLimitBurst=5 StartLimitAction=none FailureAction=none SuccessAction=none CollectMode=inactive ```

cat /etc/containerd/config.toml

```toml #root = "/var/lib/containerd" #state = "/run/containerd" #subreaper = true #oom_score = 0 #[grpc] # address = "/run/containerd/containerd.sock" # uid = 0 # gid = 0 #[debug] # address = "/run/containerd/debug.sock" # uid = 0 # gid = 0 # level = "info" ```

Podman

## Podman

podman --version

``` podman version 2.0.6 ```

podman system info

``` host: arch: amd64 buildahVersion: 1.15.1 cgroupVersion: v1 conmon: package: conmon-2.0.21-2.fc32.x86_64 path: /usr/bin/conmon version: 'conmon version 2.0.21, commit: 81d18b6c3ffc266abdef7ca94c1450e669a6a388' cpus: 4 distribution: distribution: fedora version: "32" eventLogger: file hostname: ibm-p8-kvm-03-guest-02.virt.pnr.lab.eng.rdu2.redhat.com idMappings: gidmap: null uidmap: null kernel: 5.8.10-200.fc32.x86_64 linkmode: dynamic memFree: 6222127104 memTotal: 8340324352 ociRuntime: name: runc package: runc-1.0.0-144.dev.gite6555cc.fc32.x86_64 path: /usr/bin/runc version: |- runc version 1.0.0-rc10+dev commit: fbdbaf85ecbc0e077f336c03062710435607dbf1 spec: 1.0.1-dev os: linux remoteSocket: path: /run/podman/podman.sock rootless: false slirp4netns: executable: "" package: "" version: "" swapFree: 0 swapTotal: 0 uptime: 2m 4.48s registries: search: - registry.fedoraproject.org - registry.access.redhat.com - registry.centos.org - docker.io store: configFile: /etc/containers/storage.conf containerStore: number: 0 paused: 0 running: 0 stopped: 0 graphDriverName: overlay graphOptions: overlay.mountopt: nodev graphRoot: /var/lib/containers/storage graphStatus: Backing Filesystem: extfs Native Overlay Diff: "true" Supports d_type: "true" Using metacopy: "false" imageStore: number: 8 runRoot: /var/run/containers/storage volumePath: /var/lib/containers/storage/volumes version: APIVersion: 1 Built: 1598988411 BuiltTime: Tue Sep 1 22:26:51 2020 GitCommit: "" GoVersion: go1.14.6 OsArch: linux/amd64 Version: 2.0.6 ```

cat /etc/containers/registries.conf

``` # For more information on this configuration file, see containers-registries.conf(5). # # NOTE: RISK OF USING UNQUALIFIED IMAGE NAMES # We recommend always using fully qualified image names including the registry # server (full dns name), namespace, image name, and tag # (e.g., registry.redhat.io/ubi8/ubi:latest). Pulling by digest (i.e., # quay.io/repository/name@digest) further eliminates the ambiguity of tags. # When using short names, there is always an inherent risk that the image being # pulled could be spoofed. For example, a user wants to pull an image named # `foobar` from a registry and expects it to come from myregistry.com. If # myregistry.com is not first in the search list, an attacker could place a # different `foobar` image at a registry earlier in the search list. The user # would accidentally pull and run the attacker's image and code rather than the # intended content. We recommend only adding registries which are completely # trusted (i.e., registries which don't allow unknown or anonymous users to # create accounts with arbitrary names). This will prevent an image from being # spoofed, squatted or otherwise made insecure. If it is necessary to use one # of these registries, it should be added at the end of the list. # # # An array of host[:port] registries to try when pulling an unqualified image, in order. unqualified-search-registries = ['registry.fedoraproject.org', 'registry.access.redhat.com', 'registry.centos.org', 'docker.io'] # [[registry]] # # The "prefix" field is used to choose the relevant [[registry]] TOML table; # # (only) the TOML table with the longest match for the input image name # # (taking into account namespace/repo/tag/digest separators) is used. # # # # If the prefix field is missing, it defaults to be the same as the "location" field. # prefix = "example.com/foo" # # # If true, unencrypted HTTP as well as TLS connections with untrusted # # certificates are allowed. # insecure = false # # # If true, pulling images with matching names is forbidden. # blocked = false # # # The physical location of the "prefix"-rooted namespace. # # # # By default, this equal to "prefix" (in which case "prefix" can be omitted # # and the [[registry]] TOML table can only specify "location"). # # # # Example: Given # # prefix = "example.com/foo" # # location = "internal-registry-for-example.net/bar" # # requests for the image example.com/foo/myimage:latest will actually work with the # # internal-registry-for-example.net/bar/myimage:latest image. # location = internal-registry-for-example.com/bar" # # # (Possibly-partial) mirrors for the "prefix"-rooted namespace. # # # # The mirrors are attempted in the specified order; the first one that can be # # contacted and contains the image will be used (and if none of the mirrors contains the image, # # the primary location specified by the "registry.location" field, or using the unmodified # # user-specified reference, is tried last). # # # # Each TOML table in the "mirror" array can contain the following fields, with the same semantics # # as if specified in the [[registry]] TOML table directly: # # - location # # - insecure # [[registry.mirror]] # location = "example-mirror-0.local/mirror-for-foo" # [[registry.mirror]] # location = "example-mirror-1.local/mirrors/foo" # insecure = true # # Given the above, a pull of example.com/foo/image:latest will try: # # 1. example-mirror-0.local/mirror-for-foo/image:latest # # 2. example-mirror-1.local/mirrors/foo/image:latest # # 3. internal-registry-for-example.net/bar/image:latest # # in order, and use the first one that exists. ```

cat /etc/containers/storage.conf

``` # This file is is the configuration file for all tools # that use the containers/storage library. # See man 5 containers-storage.conf for more information # The "container storage" table contains all of the server options. [storage] # Default Storage Driver driver = "overlay" # Temporary storage location runroot = "/var/run/containers/storage" # Primary Read/Write location of container storage graphroot = "/var/lib/containers/storage" # Storage path for rootless users # # rootless_storage_path = "$HOME/.local/share/containers/storage" [storage.options] # Storage options to be passed to underlying storage drivers # AdditionalImageStores is used to pass paths to additional Read/Only image stores # Must be comma separated list. additionalimagestores = [ ] # Remap-UIDs/GIDs is the mapping from UIDs/GIDs as they should appear inside of # a container, to the UIDs/GIDs as they should appear outside of the container, # and the length of the range of UIDs/GIDs. Additional mapped sets can be # listed and will be heeded by libraries, but there are limits to the number of # mappings which the kernel will allow when you later attempt to run a # container. # # remap-uids = 0:1668442479:65536 # remap-gids = 0:1668442479:65536 # Remap-User/Group is a user name which can be used to look up one or more UID/GID # ranges in the /etc/subuid or /etc/subgid file. Mappings are set up starting # with an in-container ID of 0 and then a host-level ID taken from the lowest # range that matches the specified name, and using the length of that range. # Additional ranges are then assigned, using the ranges which specify the # lowest host-level IDs first, to the lowest not-yet-mapped in-container ID, # until all of the entries have been used for maps. # # remap-user = "containers" # remap-group = "containers" # Root-auto-userns-user is a user name which can be used to look up one or more UID/GID # ranges in the /etc/subuid and /etc/subgid file. These ranges will be partioned # to containers configured to create automatically a user namespace. Containers # configured to automatically create a user namespace can still overlap with containers # having an explicit mapping set. # This setting is ignored when running as rootless. # root-auto-userns-user = "storage" # # Auto-userns-min-size is the minimum size for a user namespace created automatically. # auto-userns-min-size=1024 # # Auto-userns-max-size is the minimum size for a user namespace created automatically. # auto-userns-max-size=65536 [storage.options.overlay] # ignore_chown_errors can be set to allow a non privileged user running with # a single UID within a user namespace to run containers. The user can pull # and use any image even those with multiple uids. Note multiple UIDs will be # squashed down to the default uid in the container. These images will have no # separation between the users in the container. Only supported for the overlay # and vfs drivers. #ignore_chown_errors = false # Path to an helper program to use for mounting the file system instead of mounting it # directly. #mount_program = "/usr/bin/fuse-overlayfs" # mountopt specifies comma separated list of extra mount options mountopt = "nodev" # Size is used to set a maximum size of the container image. # size = "" [storage.options.thinpool] # Storage Options for thinpool # autoextend_percent determines the amount by which pool needs to be # grown. This is specified in terms of % of pool size. So a value of 20 means # that when threshold is hit, pool will be grown by 20% of existing # pool size. # autoextend_percent = "20" # autoextend_threshold determines the pool extension threshold in terms # of percentage of pool size. For example, if threshold is 60, that means when # pool is 60% full, threshold has been hit. # autoextend_threshold = "80" # basesize specifies the size to use when creating the base device, which # limits the size of images and containers. # basesize = "10G" # blocksize specifies a custom blocksize to use for the thin pool. # blocksize="64k" # directlvm_device specifies a custom block storage device to use for the # thin pool. Required if you setup devicemapper. # directlvm_device = "" # directlvm_device_force wipes device even if device already has a filesystem. # directlvm_device_force = "True" # fs specifies the filesystem type to use for the base device. # fs="xfs" # log_level sets the log level of devicemapper. # 0: LogLevelSuppress 0 (Default) # 2: LogLevelFatal # 3: LogLevelErr # 4: LogLevelWarn # 5: LogLevelNotice # 6: LogLevelInfo # 7: LogLevelDebug # log_level = "7" # min_free_space specifies the min free space percent in a thin pool require for # new device creation to succeed. Valid values are from 0% - 99%. # Value 0% disables # min_free_space = "10%" # mkfsarg specifies extra mkfs arguments to be used when creating the base # device. # mkfsarg = "" # Size is used to set a maximum size of the container image. # size = "" # use_deferred_removal marks devicemapper block device for deferred removal. # If the thinpool is in use when the driver attempts to remove it, the driver # tells the kernel to remove it as soon as possible. Note this does not free # up the disk space, use deferred deletion to fully remove the thinpool. # use_deferred_removal = "True" # use_deferred_deletion marks thinpool device for deferred deletion. # If the device is busy when the driver attempts to delete it, the driver # will attempt to delete device every 30 seconds until successful. # If the program using the driver exits, the driver will continue attempting # to cleanup the next time the driver is used. Deferred deletion permanently # deletes the device and all data stored in device will be lost. # use_deferred_deletion = "True" # xfs_nospace_max_retries specifies the maximum number of retries XFS should # attempt to complete IO when ENOSPC (no space) error is returned by # underlying storage device. # xfs_nospace_max_retries = "0" ```

cat /etc/containers/policy.json

``` { "default": [ { "type": "insecureAcceptAnything" } ], "transports": { "docker-daemon": { "": [{"type":"insecureAcceptAnything"}] } } } ```

cat /usr/share/containers/containers.conf

``` # The containers configuration file specifies all of the available configuration # command-line options/flags for container engine tools like Podman & Buildah, # but in a TOML format that can be easily modified and versioned. # Please refer to containers.conf(5) for details of all configuration options. # Not all container engines implement all of the options. # All of the options have hard coded defaults and these options will override # the built in defaults. Users can then override these options via the command # line. Container engines will read containers.conf files in up to three # locations in the following order: # 1. /usr/share/containers/containers.conf # 2. /etc/containers/containers.conf # 3. $HOME/.config/containers/containers.conf (Rootless containers ONLY) # Items specified in the latter containers.conf, if they exist, override the # previous containers.conf settings, or the default settings. [containers] # List of devices. Specified as # "::", for example: # "/dev/sdc:/dev/xvdc:rwm". # If it is empty or commented out, only the default devices will be used # # devices = [] # List of volumes. Specified as # "::", for example: # "/db:/var/lib/db:ro". # If it is empty or commented out, no volumes will be added # # volumes = [] # Used to change the name of the default AppArmor profile of container engine. # # apparmor_profile = "container-default" # List of annotation. Specified as # "key=value" # If it is empty or commented out, no annotations will be added # # annotations = [] # Default way to to create a cgroup namespace for the container # Options are: # `private` Create private Cgroup Namespace for the container. # `host` Share host Cgroup Namespace with the container. # # cgroupns = "private" # Control container cgroup configuration # Determines whether the container will create CGroups. # Options are: # `enabled` Enable cgroup support within container # `disabled` Disable cgroup support, will inherit cgroups from parent # `no-conmon` Container engine runs run without conmon # # cgroups = "enabled" # List of default capabilities for containers. If it is empty or commented out, # the default capabilities defined in the container engine will be added. # # default_capabilities = [ # "AUDIT_WRITE", # "CHOWN", # "DAC_OVERRIDE", # "FOWNER", # "FSETID", # "KILL", # "MKNOD", # "NET_BIND_SERVICE", # "NET_RAW", # "SETGID", # "SETPCAP", # "SETUID", # "SYS_CHROOT", # ] # A list of sysctls to be set in containers by default, # specified as "name=value", # for example:"net.ipv4.ping_group_range = 0 1000". # # default_sysctls = [ # "net.ipv4.ping_group_range=0 1000", # ] # A list of ulimits to be set in containers by default, specified as # "=:", for example: # "nofile=1024:2048" # See setrlimit(2) for a list of resource names. # Any limit not specified here will be inherited from the process launching the # container engine. # Ulimits has limits for non privileged container engines. # # default_ulimits = [ # “nofile”=”1280:2560”, # ] # List of default DNS options to be added to /etc/resolv.conf inside of the container. # # dns_options = [] # List of default DNS search domains to be added to /etc/resolv.conf inside of the container. # # dns_searches = [] # Set default DNS servers. # This option can be used to override the DNS configuration passed to the # container. The special value “none” can be specified to disable creation of # /etc/resolv.conf in the container. # The /etc/resolv.conf file in the image will be used without changes. # # dns_servers = [] # Environment variable list for the conmon process; used for passing necessary # environment variables to conmon or the runtime. # # env = [ # "PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin", # ] # Pass all host environment variables into the container. # # env_host = false # Path to OCI hooks directories for automatically executed hooks. # # hooks_dir = [ # “/usr/share/containers/oci/hooks.d”, # ] # Default proxy environment variables passed into the container. # The environment variables passed in include: # http_proxy, https_proxy, ftp_proxy, no_proxy, and the upper case versions of # these. This option is needed when host system uses a proxy but container # should not use proxy. Proxy environment variables specified for the container # in any other way will override the values passed from the host. # # http_proxy = true # Run an init inside the container that forwards signals and reaps processes. # # init = false # Container init binary, if init=true, this is the init binary to be used for containers. # # init_path = "/usr/libexec/podman/catatonit" # Default way to to create an IPC namespace (POSIX SysV IPC) for the container # Options are: # `private` Create private IPC Namespace for the container. # `host` Share host IPC Namespace with the container. # # ipcns = "private" # Flag tells container engine to whether to use container separation using # MAC(SELinux)labeling or not. # Flag is ignored on label disabled systems. # # label = true # Logging driver for the container. Available options: k8s-file and journald. # # log_driver = "k8s-file" # Maximum size allowed for the container log file. Negative numbers indicate # that no size limit is imposed. If positive, it must be >= 8192 to match or # exceed conmon's read buffer. The file is truncated and re-opened so the # limit is never exceeded. # # log_size_max = -1 # Default way to to create a Network namespace for the container # Options are: # `private` Create private Network Namespace for the container. # `host` Share host Network Namespace with the container. # `none` Containers do not use the network # # netns = "private" # Create /etc/hosts for the container. By default, container engine manage # /etc/hosts, automatically adding the container's own IP address. # # no_hosts = false # Maximum number of processes allowed in a container. # # pids_limit = 2048 # Default way to to create a PID namespace for the container # Options are: # `private` Create private PID Namespace for the container. # `host` Share host PID Namespace with the container. # # pidns = "private" # Path to the seccomp.json profile which is used as the default seccomp profile # for the runtime. # # seccomp_profile = "/usr/share/containers/seccomp.json" # Size of /dev/shm. Specified as . # Unit is optional, values: # b (bytes), k (kilobytes), m (megabytes), or g (gigabytes). # If the unit is omitted, the system uses bytes. # # shm_size = "65536k" # Default way to to create a UTS namespace for the container # Options are: # `private` Create private UTS Namespace for the container. # `host` Share host UTS Namespace with the container. # # utsns = "private" # Default way to to create a User namespace for the container # Options are: # `auto` Create unique User Namespace for the container. # `host` Share host User Namespace with the container. # # userns = "host" # Number of UIDs to allocate for the automatic container creation. # UIDs are allocated from the “container” UIDs listed in # /etc/subuid & /etc/subgid # # userns_size=65536 # The network table contains settings pertaining to the management of # CNI plugins. [network] # Path to directory where CNI plugin binaries are located. # # cni_plugin_dirs = ["/usr/libexec/cni"] # Path to the directory where CNI configuration files are located. # # network_config_dir = "/etc/cni/net.d/" [engine] # Cgroup management implementation used for the runtime. # Valid options “systemd” or “cgroupfs” # # cgroup_manager = "systemd" # Environment variables to pass into conmon # # conmon_env_vars = [ # "PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin" # ] # Paths to look for the conmon container manager binary # # conmon_path = [ # "/usr/libexec/podman/conmon", # "/usr/local/libexec/podman/conmon", # "/usr/local/lib/podman/conmon", # "/usr/bin/conmon", # "/usr/sbin/conmon", # "/usr/local/bin/conmon", # "/usr/local/sbin/conmon" # ] # Specify the keys sequence used to detach a container. # Format is a single character [a-Z] or a comma separated sequence of # `ctrl-`, where `` is one of: # `a-z`, `@`, `^`, `[`, `\`, `]`, `^` or `_` # # detach_keys = "ctrl-p,ctrl-q" # Determines whether engine will reserve ports on the host when they are # forwarded to containers. When enabled, when ports are forwarded to containers, # ports are held open by as long as the container is running, ensuring that # they cannot be reused by other programs on the host. However, this can cause # significant memory usage if a container has many ports forwarded to it. # Disabling this can save memory. # # enable_port_reservation = true # Selects which logging mechanism to use for container engine events. # Valid values are `journald`, `file` and `none`. # # events_logger = "journald" # Default transport method for pulling and pushing for images # # image_default_transport = "docker://" # Default command to run the infra container # # infra_command = "/pause" # Infra (pause) container image name for pod infra containers. When running a # pod, we start a `pause` process in a container to hold open the namespaces # associated with the pod. This container does nothing other then sleep, # reserving the pods resources for the lifetime of the pod. # # infra_image = "k8s.gcr.io/pause:3.2" # Specify the locking mechanism to use; valid values are "shm" and "file". # Change the default only if you are sure of what you are doing, in general # "file" is useful only on platforms where cgo is not available for using the # faster "shm" lock type. You may need to run "podman system renumber" after # you change the lock type. # # lock_type** = "shm" # Default engine namespace # If engine is joined to a namespace, it will see only containers and pods # that were created in the same namespace, and will create new containers and # pods in that namespace. # The default namespace is "", which corresponds to no namespace. When no # namespace is set, all containers and pods are visible. # # namespace = "" # Whether to use chroot instead of pivot_root in the runtime # # no_pivot_root = false # Number of locks available for containers and pods. # If this is changed, a lock renumber must be performed (e.g. with the # 'podman system renumber' command). # # num_locks = 2048 # Whether to pull new image before running a container # pull_policy = "missing" # Directory for persistent engine files (database, etc) # By default, this will be configured relative to where the containers/storage # stores containers # Uncomment to change location from this default # # static_dir = "/var/lib/containers/storage/libpod" # Directory for temporary files. Must be tmpfs (wiped after reboot) # # tmp_dir = "/var/run/libpod" # Directory for libpod named volumes. # By default, this will be configured relative to where containers/storage # stores containers. # Uncomment to change location from this default. # # volume_path = "/var/lib/containers/storage/volumes" # Default OCI runtime # # runtime = "runc" # List of the OCI runtimes that support --format=json. When json is supported # engine will use it for reporting nicer errors. # # runtime_supports_json = ["crun", "runc", "kata"] # List of the OCI runtimes that supports running containers without cgroups. # # runtime_supports_nocgroups = ["crun"] # List of the OCI runtimes that supports running containers with KVM Separation. # # runtime_supports_kvm = ["kata"] # Paths to look for a valid OCI runtime (runc, runv, kata, etc) [engine.runtimes] # runc = [ # "/usr/bin/runc", # "/usr/sbin/runc", # "/usr/local/bin/runc", # "/usr/local/sbin/runc", # "/sbin/runc", # "/bin/runc", # "/usr/lib/cri-o-runc/sbin/runc", # ] # crun = [ # "/usr/bin/crun", # "/usr/sbin/crun", # "/usr/local/bin/crun", # "/usr/local/sbin/crun", # "/sbin/crun", # "/bin/crun", # "/run/current-system/sw/bin/crun", # ] # kata = [ # "/usr/bin/kata-runtime", # "/usr/sbin/kata-runtime", # "/usr/local/bin/kata-runtime", # "/usr/local/sbin/kata-runtime", # "/sbin/kata-runtime", # "/bin/kata-runtime", # "/usr/bin/kata-qemu", # "/usr/bin/kata-fc", # ] # Number of seconds to wait for container to exit before sending kill signal. #stop_timeout = 10 # The [engine.runtimes] table MUST be the last entry in this file. # (Unless another table is added) # TOML does not provide a way to end a table other than a further table being # defined, so every key hereafter will be part of [runtimes] and not the main # config. ```

cat /usr/share/containers/mounts.conf

``` /usr/share/rhel/secrets:/run/secrets ```

cat /usr/share/containers/seccomp.json

``` { "defaultAction": "SCMP_ACT_ERRNO", "archMap": [ { "architecture": "SCMP_ARCH_X86_64", "subArchitectures": [ "SCMP_ARCH_X86", "SCMP_ARCH_X32" ] }, { "architecture": "SCMP_ARCH_AARCH64", "subArchitectures": [ "SCMP_ARCH_ARM" ] }, { "architecture": "SCMP_ARCH_MIPS64", "subArchitectures": [ "SCMP_ARCH_MIPS", "SCMP_ARCH_MIPS64N32" ] }, { "architecture": "SCMP_ARCH_MIPS64N32", "subArchitectures": [ "SCMP_ARCH_MIPS", "SCMP_ARCH_MIPS64" ] }, { "architecture": "SCMP_ARCH_MIPSEL64", "subArchitectures": [ "SCMP_ARCH_MIPSEL", "SCMP_ARCH_MIPSEL64N32" ] }, { "architecture": "SCMP_ARCH_MIPSEL64N32", "subArchitectures": [ "SCMP_ARCH_MIPSEL", "SCMP_ARCH_MIPSEL64" ] }, { "architecture": "SCMP_ARCH_S390X", "subArchitectures": [ "SCMP_ARCH_S390" ] } ], "syscalls": [ { "names": [ "accept", "accept4", "access", "adjtimex", "alarm", "bind", "brk", "capget", "capset", "chdir", "chmod", "chown", "chown32", "clock_adjtime", "clock_getres", "clock_gettime", "clock_nanosleep", "clone", "close", "connect", "copy_file_range", "creat", "dup", "dup2", "dup3", "epoll_create", "epoll_create1", "epoll_ctl", "epoll_ctl_old", "epoll_pwait", "epoll_wait", "epoll_wait_old", "eventfd", "eventfd2", "execve", "execveat", "exit", "exit_group", "faccessat", "fadvise64", "fadvise64_64", "fallocate", "fanotify_mark", "fchdir", "fchmod", "fchmodat", "fchown", "fchown32", "fchownat", "fcntl", "fcntl64", "fdatasync", "fgetxattr", "flistxattr", "flock", "fork", "fremovexattr", "fsetxattr", "fstat", "fstat64", "fstatat64", "fstatfs", "fstatfs64", "fsync", "ftruncate", "ftruncate64", "futex", "futimesat", "getcpu", "getcwd", "getdents", "getdents64", "getegid", "getegid32", "geteuid", "geteuid32", "getgid", "getgid32", "getgroups", "getgroups32", "getitimer", "getpeername", "getpgid", "getpgrp", "getpid", "getppid", "getpriority", "getrandom", "getresgid", "getresgid32", "getresuid", "getresuid32", "getrlimit", "get_robust_list", "getrusage", "getsid", "getsockname", "getsockopt", "get_thread_area", "gettid", "gettimeofday", "getuid", "getuid32", "getxattr", "inotify_add_watch", "inotify_init", "inotify_init1", "inotify_rm_watch", "io_cancel", "ioctl", "io_destroy", "io_getevents", "ioprio_get", "ioprio_set", "io_setup", "io_submit", "ipc", "keyctl", "kill", "lchown", "lchown32", "lgetxattr", "link", "linkat", "listen", "listxattr", "llistxattr", "_llseek", "lremovexattr", "lseek", "lsetxattr", "lstat", "lstat64", "madvise", "memfd_create", "mincore", "mkdir", "mkdirat", "mknod", "mknodat", "mlock", "mlock2", "mlockall", "mmap", "mmap2", "mprotect", "mq_getsetattr", "mq_notify", "mq_open", "mq_timedreceive", "mq_timedsend", "mq_unlink", "mremap", "msgctl", "msgget", "msgrcv", "msgsnd", "msync", "munlock", "munlockall", "munmap", "nanosleep", "newfstatat", "_newselect", "open", "openat", "pause", "pipe", "pipe2", "pivot_root", "poll", "ppoll", "prctl", "pread64", "preadv", "preadv2", "prlimit64", "pselect6", "pwrite64", "pwritev", "pwritev2", "read", "readahead", "readlink", "readlinkat", "readv", "recv", "recvfrom", "recvmmsg", "recvmsg", "remap_file_pages", "removexattr", "rename", "renameat", "renameat2", "restart_syscall", "rmdir", "rt_sigaction", "rt_sigpending", "rt_sigprocmask", "rt_sigqueueinfo", "rt_sigreturn", "rt_sigsuspend", "rt_sigtimedwait", "rt_tgsigqueueinfo", "sched_getaffinity", "sched_getattr", "sched_getparam", "sched_get_priority_max", "sched_get_priority_min", "sched_getscheduler", "sched_rr_get_interval", "sched_setaffinity", "sched_setattr", "sched_setparam", "sched_setscheduler", "sched_yield", "seccomp", "select", "semctl", "semget", "semop", "semtimedop", "send", "sendfile", "sendfile64", "sendmmsg", "sendmsg", "sendto", "setfsgid", "setfsgid32", "setfsuid", "setfsuid32", "setgid", "setgid32", "setgroups", "setgroups32", "setitimer", "setpgid", "setpriority", "setregid", "setregid32", "setresgid", "setresgid32", "setresuid", "setresuid32", "setreuid", "setreuid32", "setrlimit", "set_robust_list", "setsid", "setsockopt", "set_thread_area", "set_tid_address", "setuid", "setuid32", "setxattr", "shmat", "shmctl", "shmdt", "shmget", "shutdown", "sigaltstack", "signalfd", "signalfd4", "sigreturn", "socket", "socketcall", "socketpair", "splice", "stat", "stat64", "statfs", "statfs64", "statx", "symlink", "symlinkat", "sync", "sync_file_range", "syncfs", "sysinfo", "syslog", "tee", "tgkill", "time", "timer_create", "timer_delete", "timerfd_create", "timerfd_gettime", "timerfd_settime", "timer_getoverrun", "timer_gettime", "timer_settime", "times", "tkill", "truncate", "truncate64", "ugetrlimit", "umask", "uname", "unlink", "unlinkat", "utime", "utimensat", "utimes", "vfork", "vmsplice", "wait4", "waitid", "waitpid", "write", "writev", "mount", "umount2", "reboot", "name_to_handle_at", "unshare" ], "action": "SCMP_ACT_ALLOW", "args": [], "comment": "", "includes": {}, "excludes": {} }, { "names": [ "personality" ], "action": "SCMP_ACT_ALLOW", "args": [ { "index": 0, "value": 0, "valueTwo": 0, "op": "SCMP_CMP_EQ" } ], "comment": "", "includes": {}, "excludes": {} }, { "names": [ "personality" ], "action": "SCMP_ACT_ALLOW", "args": [ { "index": 0, "value": 8, "valueTwo": 0, "op": "SCMP_CMP_EQ" } ], "comment": "", "includes": {}, "excludes": {} }, { "names": [ "personality" ], "action": "SCMP_ACT_ALLOW", "args": [ { "index": 0, "value": 131072, "valueTwo": 0, "op": "SCMP_CMP_EQ" } ], "comment": "", "includes": {}, "excludes": {} }, { "names": [ "personality" ], "action": "SCMP_ACT_ALLOW", "args": [ { "index": 0, "value": 131080, "valueTwo": 0, "op": "SCMP_CMP_EQ" } ], "comment": "", "includes": {}, "excludes": {} }, { "names": [ "personality" ], "action": "SCMP_ACT_ALLOW", "args": [ { "index": 0, "value": 4294967295, "valueTwo": 0, "op": "SCMP_CMP_EQ" } ], "comment": "", "includes": {}, "excludes": {} }, { "names": [ "sync_file_range2" ], "action": "SCMP_ACT_ALLOW", "args": [], "comment": "", "includes": { "arches": [ "ppc64le" ] }, "excludes": {} }, { "names": [ "arm_fadvise64_64", "arm_sync_file_range", "sync_file_range2", "breakpoint", "cacheflush", "set_tls" ], "action": "SCMP_ACT_ALLOW", "args": [], "comment": "", "includes": { "arches": [ "arm", "arm64" ] }, "excludes": {} }, { "names": [ "arch_prctl" ], "action": "SCMP_ACT_ALLOW", "args": [], "comment": "", "includes": { "arches": [ "amd64", "x32" ] }, "excludes": {} }, { "names": [ "modify_ldt" ], "action": "SCMP_ACT_ALLOW", "args": [], "comment": "", "includes": { "arches": [ "amd64", "x32", "x86" ] }, "excludes": {} }, { "names": [ "s390_pci_mmio_read", "s390_pci_mmio_write", "s390_runtime_instr", "clone" ], "action": "SCMP_ACT_ALLOW", "args": [], "comment": "", "includes": { "arches": [ "s390", "s390x" ] }, "excludes": {} }, { "names": [ "open_by_handle_at" ], "action": "SCMP_ACT_ALLOW", "args": [], "comment": "", "includes": { "caps": [ "CAP_DAC_READ_SEARCH" ] }, "excludes": {} }, { "names": [ "bpf", "clone", "fanotify_init", "lookup_dcookie", "mount", "name_to_handle_at", "perf_event_open", "quotactl", "setdomainname", "sethostname", "setns", "umount", "umount2", "unshare" ], "action": "SCMP_ACT_ALLOW", "args": [], "comment": "", "includes": { "caps": [ "CAP_SYS_ADMIN" ] }, "excludes": {} }, { "names": [ "clone" ], "action": "SCMP_ACT_ALLOW", "args": [ { "index": 0, "value": 2080505856, "valueTwo": 0, "op": "SCMP_CMP_MASKED_EQ" } ], "comment": "", "includes": {}, "excludes": { "caps": [ "CAP_SYS_ADMIN" ], "arches": [ "s390", "s390x" ] } }, { "names": [ "clone" ], "action": "SCMP_ACT_ALLOW", "args": [ { "index": 1, "value": 2080505856, "valueTwo": 0, "op": "SCMP_CMP_MASKED_EQ" } ], "comment": "s390 parameter ordering for clone is different", "includes": { "arches": [ "s390", "s390x" ] }, "excludes": { "caps": [ "CAP_SYS_ADMIN" ] } }, { "names": [ "reboot" ], "action": "SCMP_ACT_ALLOW", "args": [], "comment": "", "includes": { "caps": [ "CAP_SYS_BOOT" ] }, "excludes": {} }, { "names": [ "chroot" ], "action": "SCMP_ACT_ALLOW", "args": [], "comment": "", "includes": { "caps": [ "CAP_SYS_CHROOT" ] }, "excludes": {} }, { "names": [ "delete_module", "init_module", "finit_module", "query_module" ], "action": "SCMP_ACT_ALLOW", "args": [], "comment": "", "includes": { "caps": [ "CAP_SYS_MODULE" ] }, "excludes": {} }, { "names": [ "get_mempolicy", "mbind", "name_to_handle_at", "set_mempolicy" ], "action": "SCMP_ACT_ALLOW", "args": [], "comment": "", "includes": { "caps": [ "CAP_SYS_NICE" ] }, "excludes": {} }, { "names": [ "acct" ], "action": "SCMP_ACT_ALLOW", "args": [], "comment": "", "includes": { "caps": [ "CAP_SYS_PACCT" ] }, "excludes": {} }, { "names": [ "kcmp", "process_vm_readv", "process_vm_writev", "ptrace" ], "action": "SCMP_ACT_ALLOW", "args": [], "comment": "", "includes": { "caps": [ "CAP_SYS_PTRACE" ] }, "excludes": {} }, { "names": [ "iopl", "ioperm" ], "action": "SCMP_ACT_ALLOW", "args": [], "comment": "", "includes": { "caps": [ "CAP_SYS_RAWIO" ] }, "excludes": {} }, { "names": [ "settimeofday", "stime", "clock_settime", "clock_adjtime", "adjtimex" ], "action": "SCMP_ACT_ALLOW", "args": [], "comment": "", "includes": { "caps": [ "CAP_SYS_TIME" ] }, "excludes": {} }, { "names": [ "vhangup" ], "action": "SCMP_ACT_ALLOW", "args": [], "comment": "", "includes": { "caps": [ "CAP_SYS_TTY_CONFIG" ] }, "excludes": {} } ] } ```

---

Packages

# Packages No `dpkg` Have `rpm`

rpm -qa|egrep "(cc-oci-runtime|cc-runtime|runv|kata-runtime|kata-ksm-throttler|kata-containers-image|linux-container|qemu-)"

``` ipxe-roms-qemu-20190125-4.git36a4c85f.fc32.noarch qemu-block-dmg-4.2.1-1.fc32.x86_64 libvirt-daemon-driver-qemu-6.1.0-4.fc32.x86_64 qemu-audio-pa-4.2.1-1.fc32.x86_64 qemu-system-x86-4.2.1-1.fc32.x86_64 qemu-guest-agent-4.2.1-1.fc32.x86_64 qemu-kvm-core-4.2.1-1.fc32.x86_64 qemu-block-rbd-4.2.1-1.fc32.x86_64 qemu-ui-gtk-4.2.1-1.fc32.x86_64 qemu-audio-oss-4.2.1-1.fc32.x86_64 qemu-block-ssh-4.2.1-1.fc32.x86_64 qemu-img-4.2.1-1.fc32.x86_64 qemu-common-4.2.1-1.fc32.x86_64 qemu-kvm-4.2.1-1.fc32.x86_64 qemu-block-gluster-4.2.1-1.fc32.x86_64 qemu-system-x86-core-4.2.1-1.fc32.x86_64 qemu-audio-sdl-4.2.1-1.fc32.x86_64 qemu-ui-spice-app-4.2.1-1.fc32.x86_64 qemu-ui-sdl-4.2.1-1.fc32.x86_64 qemu-audio-alsa-4.2.1-1.fc32.x86_64 qemu-block-nfs-4.2.1-1.fc32.x86_64 kata-runtime-1.11.0-3.fc32.x86_64 qemu-ui-curses-4.2.1-1.fc32.x86_64 qemu-block-iscsi-4.2.1-1.fc32.x86_64 qemu-block-curl-4.2.1-1.fc32.x86_64 ```

---

jodh-intel commented 4 years ago

This sounds like https://github.com/kata-containers/runtime/pull/2991.

/cc @YvesChan.

snir911 commented 4 years ago

Thanks, I will try it and update

snir911 commented 4 years ago

https://github.com/kata-containers/runtime/pull/2991 doesn't fix this issue

jodh-intel commented 4 years ago

Hi @snir911,

I've just noticed that you're using crio version 1.18.3. But we test with a much older version fwics:

The commit resolves to:

$ git describe --tags 0eec454168e381e460b3d6de07bf50bfd9b0d082
v1.9.0-beta.2-2108-g0eec45416
snir911 commented 3 years ago

Closing as pods terminates successfully now, tested with kata 2.0.0 and crio 1.19 (openshift 4.6)

snir911 commented 3 years ago

This issue still exist, it's not deterministic, however most of the times pods will stay hanging. The error emitted is: failed to delete container f788a49...: Container does not exist: not found This error comes from s.findContainer() which fails to find the container which was deleted previously by sandbox.Delete after waiting to io and container has completed. Is it expected? what is the service role in the shim? should it be aware to every container removal? how would it be sync?