No such file or directory: '/etc/cni/net.d'

[Peter Jose De Sousa]

Hello,

When adding the CNI to Kubernetes Control Plane a race condition occurs if containerd is not present;

unit-kubernetes-control-plane-0: 09:36:19 WARNING unit.kubernetes-control-plane/0.cni-relation-changed for filename in os.listdir(cni_conf_dir):
unit-kubernetes-control-plane-0: 09:36:19 WARNING unit.kubernetes-control-plane/0.cni-relation-changed FileNotFoundError: [Errno 2] No such file or directory: '/etc/cni/net.d'
unit-kubernetes-control-plane-0: 09:36:19 ERROR juju.worker.uniter.operation hook "cni-relation-changed" (via explicit, bespoke hook script) failed: exit status 1
unit-kubernetes-control-plane-0: 09:36:19 INFO juju.worker.uniter awaiting error resolution for "relation-changed" hook

To replicate this scenario, run:

juju add-model test
juju add-machine --constraints="instance-type=m1.medium"
juju deploy kubernetes-control-plane --to lxd:0
juju deploy easyrsa --to lxd:0
juju deploy kube-ovn
juju add-relation kubernetes-worker kube-ovn
juju add-relation kubernetes-control-plane kube-ovn
juju add-relation kubernetes-control-plane easyrsa
juju debug-hooks kubernetes-control-plane/0
juju debug-log -i kubernetes-control-plane/0

Thanks,
Peter