helm-charts/mariadb/templates/backup-cronjob.yaml

{{- if .Values.backup.enabled }}
apiVersion: batch/v1
kind: CronJob
metadata:
  name: {{ include "mariadb.fullname" . }}-backup
  labels:
    {{- include "mariadb.labels" . | nindent 4 }}
spec:
  schedule: {{ .Values.backup.schedule | quote }}
  jobTemplate:
    spec:
      template:
        spec:
          containers:
            - name: mariadb-backup
              image: "{{ .Values.image.repository }}:{{ .Values.image.tag | default .Chart.AppVersion }}"
              command:
                - /bin/sh
                - -c
                - |
                  mariadb-dump -h {{ include "mariadb.fullname" . }} -u root -p"$MARIADB_ROOT_PASSWORD" --all-databases \
                    | gzip > /backup/mariadb-all-$(date +%Y%m%d-%H%M%S).sql.gz
                  find /backup -name "mariadb-all-*.sql.gz" -mtime +$RETENTION_DAYS -delete
              env:
                - name: MARIADB_ROOT_PASSWORD
                  valueFrom:
                    secretKeyRef:
                      name: {{ .Values.auth.existingSecret }}
                      key: {{ .Values.auth.rootPasswordKey }}
                - name: RETENTION_DAYS
                  value: {{ .Values.backup.retentionDays | quote }}
              volumeMounts:
                - name: backup-storage
                  mountPath: /backup
          volumes:
            - name: backup-storage
              hostPath:
                path: {{ .Values.backup.hostPath }}
                type: DirectoryOrCreate
          {{- if .Values.backup.node }}
          nodeSelector:
            kubernetes.io/hostname: {{ .Values.backup.node }}
          {{- end }}
          restartPolicy: OnFailure
{{- end }}