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kuberneteskubectl

How to view logs of failed jobs with kubectl?


I've created a Kubernetes job that has now failed. Where can I find the logs to this job?

I'm not sure how to find the associated pod (I assume once the job fails it deletes the pod)?

Running kubectl describe job does not seem to show any relevant information:

Name:           app-raiden-migration-12-19-58-21-11-2018
Namespace:      localdev
Selector:       controller-uid=c2fd06be-ed87-11e8-8782-080027eeb8a0
Labels:         jobType=database-migration
Annotations:    kubectl.kubernetes.io/last-applied-configuration={"apiVersion":"batch/v1","kind":"Job","metadata":{"annotations":{},"labels":{"jobType":"database-migration"},"name":"app-raiden-migration-12-19-58-21-1...
Parallelism:    1
Completions:    1
Start Time:     Wed, 21 Nov 2018 12:19:58 +0000
Pods Statuses:  0 Running / 0 Succeeded / 1 Failed
Pod Template:
  Labels:  controller-uid=c2fd06be-ed87-11e8-8782-080027eeb8a0
           job-name=app-raiden-migration-12-19-58-21-11-2018
  Containers:
   app:
    Image:  pp3-raiden-app:latest
    Port:   <none>
    Command:
      php
      artisan
      migrate
    Environment:
      DB_HOST:        local-mysql
      DB_PORT:        3306
      DB_DATABASE:    raiden
      DB_USERNAME:    <set to the key 'username' in secret 'cloudsql-db-credentials'>  Optional: false
      DB_PASSWORD:    <set to the key 'password' in secret 'cloudsql-db-credentials'>  Optional: false
      LOG_CHANNEL:    stderr
      APP_NAME:       Laravel
      APP_KEY:        ABCDEF123ERD456EABCDEF123ERD456E
      APP_URL:        http://192.168.99.100
      OAUTH_PRIVATE:  <set to the key 'oauth_private.key' in secret 'laravel-oauth'>  Optional: false
      OAUTH_PUBLIC:   <set to the key 'oauth_public.key' in secret 'laravel-oauth'>   Optional: false
    Mounts:           <none>
  Volumes:            <none>
Events:
  Type     Reason                Age   From            Message
  ----     ------                ----  ----            -------
  Normal   SuccessfulCreate      2m    job-controller  Created pod: app-raiden-migration-12-19-58-21-11-2018-pwnjn
  Warning  BackoffLimitExceeded  2m    job-controller  Job has reach the specified backoff limit

Solution

  • One other approach:

    • kubectl describe job $JOB
    • Pod name is shown under "Events"
    • kubectl logs $POD