kubectl debug

1 개요

kubectl debug

root@localhost:~# kubectl get no
NAME                               STATUS   ROLES    AGE   VERSION
cluster1-nodepool1-765bcd43-ef2h   Ready    <none>   12d   v1.20.15

root@localhost:~# kubectl debug node/cluster1-nodepool1-765bcd43-ef2h -it --image=busybox
Creating debugging pod node-debugger-cluster1-nodepool1-765bcd43-ef2h-z7vj2 with container debugger on node cluster1-node1-765bcd43-ef2h.
If you don't see a command prompt, try pressing enter.

/ # hostname
cluster1-nodepool1-765bcd43-ef2h

/ # ps -opid,comm | grep kube
 1734 kubelet
 2372 kube-proxy

/ # exit
root@localhost:~# kubectl get pod | grep node-debugger
node-debugger-cluster1-nodepool1-765bcd43-ef2h-z7vj2   0/1     Completed   0          90s

root@localhost:~# kubectl delete pod node-debugger-cluster1-nodepool1-765bcd43-ef2h-z7vj2
pod "node-debugger-cluster1-nodepool1-765bcd43-ef2h-z7vj2" deleted

2 같이 보기

• kubectl exec
• kubectl get no
• kubectl get pod
• kubectl delete pod
• error: ephemeral containers are disabled for this cluster

3 참고

• https://kubernetes.io/docs/tasks/debug-application-cluster/debug-running-pod/#node-shell-session