liveness-prob.yaml

# liveness-command method
apiVersion: v1
kind: Pod
metadata:
     name: liveness-exec
     labels:
        demo: liveness
spec:
   containers:
       - name: liveness
         image: busybox
# When running the command line argument to the container, we will first create the /tmp/healthy file, and then we will remove it after 30 seconds. 
# The deletion of the file would trigger a health failure, and our Pod would get restarted.
         args:
           - /bin/sh
           - -c
           - touch /tmp/healthy; sleep 30; rm -rf /tmp/healthy; sleep 600
         livenessProbe:
               exec:
                  command:
                     - cat
                     - /tmp/healthy
               initialDelaySeconds: 5 # The initialDelaySeconds parameter requests the kubelet to wait for 5 seconds before the first probe.
               periodSeconds: 5  # The existence of the /tmp/healthy file is configured to be checked every 5 seconds using the periodSeconds parameter.