[kubernetes] kubectl exec 명령

kubectl exec 명령

Execute a command in a container.

사용법

Examples:
  # Get output from running the 'date' command from pod mypod, using the first container by default
  kubectl exec mypod -- date

  # Get output from running the 'date' command in ruby-container from pod mypod
  kubectl exec mypod -c ruby-container -- date

  # Switch to raw terminal mode; sends stdin to 'bash' in ruby-container from pod mypod
  # and sends stdout/stderr from 'bash' back to the client
  kubectl exec mypod -c ruby-container -i -t -- bash -il

  # List contents of /usr from the first container of pod mypod and sort by modification time
  # If the command you want to execute in the pod has any flags in common (e.g. -i),
  # you must use two dashes (--) to separate your command's flags/arguments
  # Also note, do not surround your command and its flags/arguments with quotes
  # unless that is how you would execute it normally (i.e., do ls -t /usr, not "ls -t /usr")
  kubectl exec mypod -i -t -- ls -t /usr

  # Get output from running 'date' command from the first pod of the deployment mydeployment, using the first container
by default
  kubectl exec deploy/mydeployment -- date

  # Get output from running 'date' command from the first pod of the service myservice, using the first container by
default
  kubectl exec svc/myservice -- date

Options:
  -c, --container='': Container name. If omitted, use the kubectl.kubernetes.io/default-container annotation for
selecting the container to be attached or the first container in the pod will be chosen
  -f, --filename=[]: to use to exec into the resource
      --pod-running-timeout=1m0s: The length of time (like 5s, 2m, or 3h, higher than zero) to wait until at least one
pod is running
  -q, --quiet=false: Only print output from the remote session
  -i, --stdin=false: Pass stdin to the container
  -t, --tty=false: Stdin is a TTY

Usage:
  kubectl exec (POD | TYPE/NAME) [-c CONTAINER] [flags] -- COMMAND [args...] [options]

Use "kubectl options" for a list of global command-line options (applies to all commands).

 

kubectl exec myapp-rs-readiness-k5gw2 -- hostname

$ kubectl exec myapp-rs-readiness-k5gw2 -- hostname
myapp-rs-readiness-k5gw2

$ kubectl exec myapp-rs-readiness-95mfh -- ifconfig | grep inet | head -n 1
          inet addr:10.244.120.92  Bcast:10.244.120.92  Mask:255.255.255.255