i upgraded my ubuntu 20.04 to 5.15 kernel and (perhaps also in parallel installing openebs) but since then my etcd no longer works and the ctrl plane is dead. I have apparmor installed. I see error messages like this: "level=info msg="Waiting for containerd startup: rpc error: code = Unimplemented desc = unknown service runtime.v1alpha2.RuntimeService"" And i see error messages like this in etcd:

"/health error","output":"{\"health\":\"false\",\"reason\":\"RAFT NO LEADER\"}","status-code":503}

When i try to debug containerd/container with ctr or crictrl i always get that there is no containerd.sock (i can only find

containerd.sock.ttrpc

There was a weird issue on 2 ctrl planes: something about not enough filedescriptors. Unfortuna i was not able to see who tried to open too many files, but i'im not sure if this is not more of an containerd issue who starts 2 etcd container constantly My google and debug magic is gone. Any ideas/suggestions?

Does the file

/run/k3s/containerd/containerd.sock

exist? Have you poked around with any of the other commands from https://gist.github.com/superseb/3b78f47989e0dbc1295486c186e944bf ?

It exists, i think i should be able to create a config then. let me check out the other commands. tx

No problem.

No luck:

/var/lib/rancher/rke2/bin/crictl --runtime-endpoint unix:///run/k3s/containerd/containerd.sock ps -a
FATA[0009] connect: connect endpoint 'unix:///run/k3s/containerd/containerd.sock', make sure you are running as root and the endpoint has been started: context deadline exceeded

Did you try

/var/lib/rancher/rke2/bin/crictl --config /var/lib/rancher/rke2/agent/etc/crictl.yaml ps

i tried the ctr one again and that works now