按需备份

KubeBlocks 支持按需备份。你可以通过指定 --method 来自定义备份方法。本文档以使用备份工具和卷快照为例。

备份工具

下面使用 xtrabackup 备份方法，创建名为 mybackup 的备份。

kbcli

# 创建备份
kbcli cluster backup mysql-cluster --name mybackup --method xtrabackup
>
Backup mybackup created successfully, you can view the progress:
        kbcli cluster list-backups --name=mybackup -n default
        
# 查看备份
kbcli cluster list-backups --name=mybackup -n default
>
NAME       NAMESPACE   SOURCE-CLUSTER   METHOD       STATUS      TOTAL-SIZE   DURATION   CREATE-TIME                  COMPLETION-TIME              EXPIRATION
mybackup   default     mysql-cluster    xtrabackup   Completed   4426858      2m8s       Oct 30,2023 15:19 UTC+0800   Oct 30,2023 15:21 UTC+0800

kubectl

# 创建备份
kubectl apply -f - <<-'EOF'
apiVersion: dataprotection.kubeblocks.io/v1alpha1
kind: Backup
metadata:
  name: mybackup
  namespace: default
  annotations:
    dataprotection.kubeblocks.io/connection-password: Bw1cR15mzfldc9hzGuK4m1BZQOzha6aBb1i9nlvoBdoE9to4
spec:
  backupMethod: xtrabackup
  backupPolicyName: mysql-cluster-mysql-backup-policy
EOF

# 查看备份
kubectl get backup mybackup
>
NAME       POLICY                              METHOD       REPO      STATUS      TOTAL-SIZE   DURATION   CREATION-TIME          COMPLETION-TIME        EXPIRATION-TIME
mybackup   mysql-cluster-mysql-backup-policy   xtrabackup   my-repo   Completed   4426858      2m8s       2023-10-30T07:19:21Z   2023-10-30T07:21:28Z

备注

annotations 中的 dataprotection.kubeblocks.io/connection-password 使用原集群的密码。

卷快照备份

使用云盘快照创建备份的方式与以上命令类似，只需将对应 YAML 中的 backupMethod 或者 kbcli 命令中的 --method 参数设置为 volume-snapshot 即可。

kbcli

# 创建备份
kbcli cluster backup mysql-cluster --name mybackup --method volume-snapshot
>
Backup mybackup created successfully, you can view the progress:
        kbcli cluster list-backups --name=mybackup -n default
        
# 查看备份
kbcli cluster list-backups --name=mybackup -n default
>
NAME       NAMESPACE   SOURCE-CLUSTER   METHOD            STATUS      TOTAL-SIZE   DURATION   CREATE-TIME                  COMPLETION-TIME              EXPIRATION
mybackup   default     mysql-cluster    volume-snapshot   Completed   4426858      2m8s       Oct 30,2023 15:19 UTC+0800   Oct 30,2023 15:21 UTC+0800

kubectl

将对应 YAML 中的 backupMethod 参数设置为 volume-snapshot。

# 创建备份
kubectl apply -f - <<-'EOF'
apiVersion: dataprotection.kubeblocks.io/v1alpha1
kind: Backup
metadata:
  name: mybackup
  namespace: default
spec:
  backupMethod: volume-snapshot
  backupPolicyName: mycluster-mysql-backup-policy
EOF

# 查看备份
kubectl get backup mybackup
>
NAME       POLICY                              METHOD            REPO      STATUS      TOTAL-SIZE   DURATION   CREATION-TIME          COMPLETION-TIME        EXPIRATION-TIME
mybackup   mycluster-mysql-backup-policy       volume-snapshot   my-repo   Completed   4426858      2m8s       2023-10-30T07:19:21Z   2023-10-30T07:21:28Z

注意

1. 使用云盘快照创建备份时，请确保使用的存储支持快照功能，否则会导致备份失败。

2. 通过 kbcli 手动创建的备份，不会自动删除，需要用户手动删除。