Issues on Ubuntu 22.04

[cguertin14]

Summary

After upgrading from Ubuntu 20.04 LTS to Ubuntu 22.04 LTS, I am currently facing issues with my k3s cluster (which runs on Raspberry Pi - ARM), which I bootstrapped using this role.

For instance, the logs of the local-path-provisioner pod:

$ kubectl logs -n kube-system local-path-provisioner-6c79684f77-l4cqp
time="2022-04-28T03:27:00Z" level=fatal msg="Error starting daemon: Cannot start Provisioner: failed to get Kubernetes server version: Get \"https://10.43.0.1:443/version?timeout=32s\": dial tcp 10.43.0.1:443: i/o timeout"

I've tried the following actions:

• Installing the following apt package: sudo apt install linux-modules-extra-raspi
• Disabling ipv6, as described here
• Disabling ufw firewall
• Use legacy iptables
• Adding rules for internal traffic to iptables, like so: (note: 10.42.0.0/16 here is the Pod CIDR of the k3s cluster)

  $ sudo iptables -A INPUT -s 10.42.0.0/16 -d <host_ip> -j ACCEPT

Still, coredns, local-path-provisioner and metrics-server deployments won't start. When listing pods, here's the output:

$ kubectl get pods -n kube-system                                    
NAME                                      READY   STATUS             RESTARTS         AGE
cilium-64r4c                              1/1     Running            2 (18m ago)      174m
cilium-d8grw                              1/1     Running            2 (18m ago)      174m
cilium-g4gmf                              1/1     Running            2 (18m ago)      174m
cilium-h5j4h                              1/1     Running            2 (18m ago)      174m
cilium-n62nv                              1/1     Running            2 (18m ago)      174m
cilium-operator-76cff99967-6fgkv          1/1     Running            2 (18m ago)      174m
cilium-operator-76cff99967-pbr4l          1/1     Running            2 (18m ago)      174m
cilium-w4n6d                              1/1     Running            2 (18m ago)      174m
cilium-wgm7l                              1/1     Running            2 (18m ago)      174m
cilium-zqb6w                              1/1     Running            2 (18m ago)      174m
coredns-d76bd69b-bhgnl                    0/1     CrashLoopBackOff   44 (3m27s ago)   177m
hubble-relay-67f64789c7-cjzz9             0/1     CrashLoopBackOff   63 (4m15s ago)   174m
hubble-ui-794cd44b77-9vgbl                3/3     Running            6 (18m ago)      174m
local-path-provisioner-6c79684f77-l4cqp   0/1     CrashLoopBackOff   35 (3m53s ago)   177m
metrics-server-7cd5fcb6b7-v74rc           0/1     CrashLoopBackOff   42 (3m35s ago)   177m

Issue Type

• Bug Report

Controller Environment and Configuration

Role version: v3.1.1

Expected Result

All the pods running, no crash loops.

[cguertin14]

Oh well: https://github.com/cguertin14/k3s-ansible-ha/commit/cd1b311557ce7efbbd67fa2f18ac47f030054a6b Fixed it.