helm-charts/uptime-kuma/templates/backup-cronjob.yaml

{{- if .Values.backup.enabled -}}
apiVersion: batch/v1
kind: CronJob
metadata:
  name: {{ .Release.Name }}-backup
spec:
  schedule: {{ .Values.backup.schedule | quote }}
  jobTemplate:
    spec:
      template:
        spec:
          containers:
          - name: mysql-backup
            image: {{ .Values.backup.image }}
            command:
            - /bin/sh
            - -c
            - |
              mysqldump -h {{ .Values.database.host }} -P {{ .Values.database.port }} -u $DB_USERNAME -p$DB_PASSWORD --single-transaction --set-gtid-purged=OFF --no-tablespaces $DB_NAME | gzip > /backup/$DB_NAME-$(date +%Y%m%d-%H%M%S).sql.gz
              find /backup -name "$DB_NAME-*.sql.gz" -mtime +{{ .Values.backup.retentionDays }} -delete
            env:
            - name: DB_NAME
              valueFrom:
                secretKeyRef:
                  name: {{ .Values.database.existingSecret }}
                  key: {{ .Values.database.secretKeys.dbName }}
            - name: DB_USERNAME
              valueFrom:
                secretKeyRef:
                  name: {{ .Values.database.existingSecret }}
                  key: {{ .Values.database.secretKeys.dbUsername }}
            - name: DB_PASSWORD
              valueFrom:
                secretKeyRef:
                  name: {{ .Values.database.existingSecret }}
                  key: {{ .Values.database.secretKeys.dbPassword }}
            volumeMounts:
            - name: backup-storage
              mountPath: /backup
          volumes:
          - name: backup-storage
            hostPath:
              path: {{ .Values.backup.storagePath }}
              type: DirectoryOrCreate
          restartPolicy: OnFailure
          {{- if .Values.backup.node }}
          affinity:
            nodeAffinity:
              requiredDuringSchedulingIgnoredDuringExecution:
                nodeSelectorTerms:
                - matchExpressions:
                  - key: kubernetes.io/hostname
                    operator: In
                    values:
                    - {{ .Values.backup.node }}
          {{- end }}
{{- end }}