走剧情的NPC

在 k8s 中使用 cronjob 备份 mongodb

---
apiVersion: batch/v1beta1
kind: CronJob
metadata:
  annotations: {}
  labels:
    k8s.kuboard.cn/name: mongodb-backup
  name: mongodb-backup
  namespace: ac-data
spec:
  concurrencyPolicy: Replace
  failedJobsHistoryLimit: 1
  jobTemplate:
    metadata:
      creationTimestamp: null
      labels:
        k8s.kuboard.cn/name: mongodb-backup
    spec:
      template:
        metadata:
          creationTimestamp: null
        spec:
          containers:
            - command:
                - /app/backup.sh
              env:
                - name: URI
                  value: >-
                    mongodb://user:pwd@mongodb-name-headless.ac-data.svc:27017/db?replicaSet=rs0
              image: 'mongodb:7.0.2-debian-11-r7'
              imagePullPolicy: IfNotPresent
              name: c0
              resources: {}
              securityContext:
                runAsGroup: 0
                runAsUser: 0
              terminationMessagePath: /dev/termination-log
              terminationMessagePolicy: File
              volumeMounts:
                - mountPath: /data
                  name: volume-data
                  subPath: db-backup
                - mountPath: /app
                  name: volume-scripts
          dnsPolicy: ClusterFirst
          restartPolicy: Never
          schedulerName: default-scheduler
          securityContext: {}
          terminationGracePeriodSeconds: 30
          volumes:
            - name: volume-data
              nfs:
                path: /mnt
                server: 10.11.123.111
            - configMap:
                defaultMode: 511
                name: mongo-backup
              name: volume-scripts
  schedule: 5 0 * * *
  successfulJobsHistoryLimit: 3
  suspend: false
---
apiVersion: v1
data:
  backup.sh: |-
    #!/bin/bash

    ROOT_PATH=/data
    BACKUP_PREFIX=mongodb_backup_
    DATE=`TZ=Asia/Shanghai date +%Y-%m-%d_%H%M`
    BACKUP_DIR=${ROOT_PATH}/${BACKUP_PREFIX}${DATE}
    echo "back up mongodb to ${BACKUP_DIR}"

    # run command to back
    mongodump --uri="${URI}" --out=${BACKUP_DIR}


    # delete old backup
    cutoff=$(date -d '7 days ago' +%s)
    for folder in ${ROOT_PATH}/*; do
      # if directory name startwith backup_ and create before 7 days ago will be deleted
      if [[ -d "$folder" ]] && [[ $(basename "$folder") == "$BACKUP_PREFIX"* ]]; then
        timestamp=$(echo "$folder" | grep -oP '\d{4}-\d{2}-\d{2}' | date -f - '+%s')
        if (( timestamp < cutoff )); then
          echo "directory ${folder} will be deleted"
          rm -rf "$folder"
        fi
      fi
    done

    echo "Done"
kind: ConfigMap
metadata:
  annotations: {}
  labels: {}
  name: mongo-backup
  namespace: ac-data