Let's say I have a 3 node cluster (master01, node01, node02)
How can I find the running container path on node? I can see container ID by "oc describe pod"
Container ID: docker://9982c309a3fd8c336c98201eff53a830a1c56a4cf94c2861c52656855cba3558eg: on node 01, I can see a lot of directories under "/var/lib/openshift/openshift.local.volumes/pods/"; but not sure how this map to pod names or container names. Seems inactive container maps/mounts but how to do a sage clean up ?
Any help really appreciated. Thank you.
You can use this to list the container image by pod name:
kubectl get pods POD_NAME -o=jsonpath='{..image}'
Source: Docs
Generally, all the container filesystems + images live under your docker home directory which defaults to /var/lib/docker. You can also see if it has been custom configured by looking at the current dockerd process:
ps -Af | grep dockerdSince you are running docker as your runtime. You can use to clean up all the garbage:
docker system prune -a --forceBasically, it prunes all the exited containers and the images that are not being used by any container.
Hope it helps!
Thanks for your answers.
I have found it from another group and given below.
Method 1:
kubectl get pods <pod name> -o jsonpath={.metadata.uid}
Then look up the uid returned in /var/lib/kubelet/pods/<uid> (or /var/lib/openshift/pods/<uid>) on the node where the pod is located.
Methods 2:
kubectl describe pod <podname>
Get the container id from there.
Then run a docker inspect <containerid> on the node
Then look up the uid returned in /var/lib/kubelet/pods/<uid> (or /var/lib/openshift/pods/<uid>) on the node where the pod is located.