kuberneteskubernetes-cronjob

access logs in cron jobs kubernetes


I'm running a CronJob in kubernetes, the jobs complete successfully and I log output to the log file inside (path: storage/logs) but I cannot access that file due to the container being in a completed state.

Here is my job yaml:

apiVersion: v1
items:
- apiVersion: batch/v1beta1
  kind: CronJob
  metadata:
    labels:
      chart: cronjobs-0.1.0
    name: cron-cronjob1
    namespace: default
  spec:
    concurrencyPolicy: Forbid
    failedJobsHistoryLimit: 1
    jobTemplate:      
      spec:
        template:
          metadata:          
            labels:
              app: cron
              cron: cronjob1
          spec:
            containers:
            - args:
              - /usr/local/bin/php
              - -c
              - /var/www/html/artisan bulk:import
              env:
              - name: DB_CONNECTION
                value: postgres
              - name: DB_HOST
                value: postgres
              - name: DB_PORT
                value: "5432"
              - name: DB_DATABASE
                value: xxx
              - name: DB_USERNAME
                value: xxx
              - name: DB_PASSWORD
                value: xxxx
              - name: APP_KEY
                value: xxxxx
              image: registry.xxxxx.com/xxxx:2ecb785-e927977
              imagePullPolicy: IfNotPresent
              name: cronjob1
              ports:
              - containerPort: 80
                name: http
                protocol: TCP              
            imagePullSecrets:
            - name: xxxxx
            restartPolicy: OnFailure          
            terminationGracePeriodSeconds: 30
    schedule: '* * * * *'
    successfulJobsHistoryLimit: 3

Is there anyway I can get my log file content displayed with kubectl log <podname> command or other alternatives?


Solution

  • I guess you know that the pod is kept around as you have successfulJobsHistoryLimit: 3. Presumably your point is that your logging is going logged to a file and not stdout and so you don't see it with kubectl logs. If so maybe you could also log to stdout or put something into the job to log the content of the file at the end, for example in a PreStop hook.