rpi-k8s/backup.cronjob.yaml

apiVersion: batch/v1
kind: CronJob
metadata:
  name: backup
spec:
  schedule: "30 3 * * 1,3,5"
  jobTemplate:
    spec:
      template:
        spec:
          initContainers:
          - name: prepare-wrapper
            image: busybox
            command: ["/bin/sh", "-c"]
            args:
            - |
              cat > /shared/wrapper.sh << 'EOF'
              #!/bin/sh
              # Execute the original entrypoint with all arguments
              /usr/bin/restic "$@"
              # Capture the exit code
              EXIT_CODE=$?
              echo $EXIT_CODE > /shared/exit-code
              echo "Exit code is $EXIT_CODE"
              exit $EXIT_CODE
              EOF
              chmod +x /shared/wrapper.sh
            volumeMounts:
            - name: shared-data
              mountPath: /shared
          containers:
          - name: restic
            image: restic/restic:0.18.1
            command: ["/shared/wrapper.sh"]
            args: ["backup", "--verbose", "--repo", "/data/repo", "--insecure-no-password", "/data/glusterfs"]
            imagePullPolicy: IfNotPresent
            volumeMounts:
            - name: restic-repo-vol
              mountPath: /data/repo
            - name: backup-data-vol
              mountPath: /data/glusterfs
            - name: shared-data
              mountPath: /shared
          - name: notify
            image: curlimages/curl
            command: ["/bin/sh"]
            args:
            - -c
            - |
              while [ ! -f /shared/exit-code ]; do sleep 1; done
              
              AUTH_HEADER="Authorization: Bearer tk_up3glyzhhojl1w5lt32jq5vqjzdgb"
              URL="http://ntfy/backup"
              MESSAGE="Local restic backup"
              EXIT_CODE=$(cat /shared/exit-code)

              echo "Captured exit code is $EXIT_CODE"
              
              if [ "$EXIT_CODE" -eq 0 ]; then
                STATUS="was successful"
              else
                STATUS="FAILED"
              fi

              curl -X POST -H "$AUTH_HEADER" -d "${MESSAGE} ${STATUS}." "$URL"

              exit $EXIT_CODE
            volumeMounts:
            - name: shared-data
              mountPath: /shared
          volumes:
          - name: restic-repo-vol
            hostPath:
              path: /data/backup
              type: Directory
          - name: backup-data-vol
            hostPath:
              path: /mnt
              type: Directory
          - name: shared-data
            emptyDir: {}
          restartPolicy: Never
          nodeSelector:
            kubernetes.io/hostname: raspberrypi4