CODEWITHSUNDEEP
kubernetes
vikingz
vikingz

Reputation: 11

Kubernetes Liveness probe & environment variables

I'm trying to figure this problem out where i need to Attach liveness probe to the container and restart after checking if environment USER is null or undefined.

Any advice on how to set this condition on a busybox container please?

Thanks for helping out a beginner.

Sincerely. V

Upvotes: 1

Views: 2671

Answers (1)

paltaa
paltaa

Reputation: 3244

[[ ! -z "$YOURVAR" ]] will return false if $YOURVAR is not defined.

apiVersion: v1
kind: Pod
metadata:
  labels:
    test: liveness
  name: liveness-exec
spec:
  containers:
  - name: liveness
    image: k8s.gcr.io/busybox
    args:
    - /bin/sh
    - -c
    - touch /tmp/healthy; sleep 30; rm -rf /tmp/healthy; sleep 600
    livenessProbe:
      exec:
        command:
        - /bin/bash
        - [[ ! -z "$var" ]]
      initialDelaySeconds: 5
      periodSeconds: 5

Upvotes: 1

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