Accessing a Container

Scenario

If you encounter unexpected problems when using a container, you can log in to the container to debug it.

Logging In to a Container Using kubectl

1. Use kubectl to connect to the cluster. For details, see Connecting to a Cluster Using kubectl.

2. Run the following command to view the created pod:

   kubectl get pod
   

   The example output is as follows:

   NAME                               READY   STATUS    RESTARTS       AGE
   nginx-59d89cb66f-mhljr             1/1     Running   0              11m
   

3. Query the container name in the pod.

   kubectl get po nginx-59d89cb66f-mhljr -o jsonpath='{range .spec.containers[*]}{.name}{end}{"\n"}'
   

   The example output is as follows:

   container-1
   

4. Run the following command to log in to the container-1 container in the nginx-59d89cb66f-mhljr pod:

   kubectl exec -it nginx-59d89cb66f-mhljr -c container-1 -- /bin/sh
   

5. To exit the container, run the exit command.

last updated: 2024-05-06 03:00