Kubernetes Job that demonstrates activeDeadlineSeconds with a graceful termination

graceful-shutdown-test.yaml

apiVersion: batch/v1
kind: Job
metadata:
  name: dan-graceful-term-test
  namespace: sandbox
  labels:
    app: graceful-shutdown
spec:
  backoffLimit: 0
  activeDeadlineSeconds: 15

  template:
    spec:
      restartPolicy: Never
      terminationGracePeriodSeconds: 20

      containers:
        - name: sigterm-test
          image: busybox:1.36
          command: ["/bin/sh", "-c"]
          args:
            - |
              handle_term() {
                echo "[$(date -u +%H:%M:%S)] SIGTERM received - starting graceful shutdown"
                sleep 3
                echo "[$(date -u +%H:%M:%S)] graceful shutdown complete, exiting 0"
                exit 0
              }
              trap handle_term TERM

              echo "[$(date -u +%H:%M:%S)] container started - sleeping..."

              # Sleep would block if not in the background
              sleep 300 &
              wait $!

              echo "[$(date -u +%H:%M:%S)] sleep finished on its own - this shouldn't happen"
              exit 1