# Release 3.0.20

[jcvenegas]

Welcome to Clear Containers release 3.0.20!.

• The runtime now checks to do not exceed the number of physical cores per VM, this fixes issues with KVM and some architectures.

• The clear containers configuration file now allows to disable block device being used directly by the hypervisor.

• The agent and kernel versions were updated to allow support for SCSI and allow use the maximum number of CPUs.

Changes

• config: don't exceed the number of physical cores
• fedora-installation-guide: update Fedora versions supported
• Logging fixes
• versions: Update agent version to pull in SCSI support
• logging: Add CLI command to logs
• config: Add comments for the DisableBlockDeviceUse flag

Shortlog

f6da537 config: don't exceed the number of physical cores e703f15 fedora-installation-guide: update Fedora versions supported b03c4a5 logging: Add name to all log calls 055c688 logging: Add PID field to logs cc84544 versions: Update agent version to pull in SCSI support 54f87f5 logging: Add CLI command to logs befbdb1 config: Add comments for the DisableBlockDeviceUse flag

Compatibility with Docker

Clear Containers 3.0.20 is compatible with Docker v17.12-ce

OCI Runtime Specification

Clear Containers 3.0.20 support the OCI Runtime Specification v1.0.0-rc5

Clear Linux Containers image

Clear Containers 3.0.20 requires at least Clear Linux containers image 20640

Clear Linux Containers Kernel

Clear Containers 3.0.20 requires at least Clear Linux Containers kernel v4.9.60-85.container

Installation

• BC-Linux

• Centos

• Clear Linux

• Fedora

• SLES

• Ubuntu

• Developers

Issues & limitations

Docker swarm support

See issue #771 for more

Networking

Adding networks dynamically

Resource management

docker run --cpus=

See issue #341 for more information.

docker run --kernel-memory=

See issue #388 for more information.

shm

cgroup constraints

Capabilities

See issue #51 for more information.

sysctl

tmpfs

Other

checkpoint and restore

docker stats

See issue #200 for more information.

runtime commands

ps command

See issue #95 for more information.

events command

See issue #379 for more information.

update command

See issue #380 for more information.

Networking

Support for joining an existing VM network

docker --net=host

docker run --link

Host resource sharing

docker --device

docker -v /dev/...

docker run --privileged

Other

Annotations

runtime commands

init command

spec command

Host rdmsr warnings

More information Limitations

[clearcontainersbot]

kubernetes qa-passed 👍

[mcastelino]

LGTM