☸️Kubernetes Pod States (Phases)

Kubernetes Pod States (Phases)

A Pod can be in one of these main states during its lifecycle.

1. Pending

  • Pod is created
  • Not running yet
  • Waiting for:
    • a node
    • images to pull
    • resources

“I exist, but I’m not running.”

2. Running

  • Pod is assigned to a node
  • Containers are started
  • Application is running (or starting)

“I’m running on a node.”

3. Succeeded

  • All containers finished successfully
  • Common for Job-based Pods

“I finished my work successfully.”

4. Failed

  • One or more containers exited with an error
  • The Pod will not restart itself

“I failed and stopped.”

5. Unknown

  • Kubernetes cannot determine the Pod state
  • Usually caused by node communication issues

“I don’t know what’s happening.”

6. Terminating (not an official phase, but important)

  • Pod is being deleted
  • Graceful shutdown is in progress

“I’m shutting down.”

Important clarifications

  • CrashLoopBackOff is not a Pod state
  • It is a container status inside a Pod
  • Container states ≠ Pod phases
Pod State Meaning
Pending Waiting to start
Running Containers running
Succeeded Finished successfully
Failed Finished with error
Unknown State cannot be determined
Terminating Shutting down

Pod states show where a Pod is in its lifecycle:

waiting, running, finished, failed, unknown, or shutting down.

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