rladmin 节点快照
管理节点的分片和终端节点的配置的快照。
| Redis 企业软件 |
|---|
管理节点的分片和终端节点的配置的快照。
您可以创建节点快照，并使用它们将节点的分片和终端节点还原到上一个时间点的配置。如果您从快照还原节点（例如，在故障转移或维护等事件之后），则该节点的分片具有与创建快照时相同的放置和角色。
node snapshot create
创建节点当前配置的快照，包括节点上分片和终端节点的放置以及分片的角色。
rladmin node <ID> snapshot create <name>
Parameters
Parameter
Type/Value
Description
node
integer
Creates a snapshot of the specified node
name
string
Name of the created snapshot
Returns
Returns Done if the snapshot was created successfully. Otherwise, returns an error.
Example
$ rladmin node 1 snapshot create snap1
Creating node snapshot 'snap1' for node:1
Done.
node snapshot delete
Deletes an existing snapshot of a node.
rladmin node <ID> snapshot delete <name>
Note:
You cannot use this command to delete a snapshot created by maintenance mode. As of Redis Enterprise Software version 7.4.2, only the latest maintenance mode snapshot is kept.
Parameters
Parameter
Type/Value
Description
node
integer
Deletes a snapshot of the specified node
name
string
Deletes the specified snapshot
Returns
Returns Done if the snapshot was deleted successfully. Otherwise, returns an error.
Example
$ rladmin node 1 snapshot delete snap1
Deleting node snapshot 'snap1' for node:1
Done.
node snapshot list
Displays a list of created snapshots for the specified node.
rladmin node <ID> snapshot list
Parameters
Parameter
Type/Value
Description
node
integer
Displays snapshots of the specified node
Returns
Returns a list of snapshots of the specified node.
Example
$ rladmin node 2 snapshot list
Name Node Time
snap2 2 2022-05-12T19:27:51Z
node snapshot restore
Restores a node's shards and endpoints as close to the stored snapshot as possible.
rladmin node <ID> snapshot restore <name>
Parameters
Parameter
Type/Value
Description
node
integer
Restore the specified node from a snapshot.
restore
string
Name of the snapshot used to restore the node.
Returns
Returns Snapshot restore completed successfully if the actions needed to restore the snapshot completed successfully. Otherwise, it returns an error.
Example
$ rladmin node 2 snapshot restore snap2
Reading node snapshot 'snap2' for node:2
Planning restore
Planned actions:
* migrate redis:15 to node:2
* failover redis:14
* migrate redis:17 to node:2
* failover redis:16
* migrate redis:19 to node:2
* failover redis:18
* migrate redis:21 to node:2
* failover redis:20
Proceed?[Y]es/[N]o? Y
2022-05-12T19:43:31.486613 Scheduling 8 actions
[2022-05-12T19:43:31.521422 Actions Status: 8 waiting ]
* [migrate redis:21 to node:2] waiting => executing
* [migrate redis:19 to node:2] waiting => executing
* [migrate redis:17 to node:2] waiting => executing
* [migrate redis:15 to node:2] waiting => executing
[2022-05-12T19:43:32.586084 Actions Status: 4 executing | 4 waiting ]
* [migrate redis:21 to node:2] executing => finished
* [migrate redis:19 to node:2] executing => finished
* [migrate redis:17 to node:2] executing => finished
* [migrate redis:15 to node:2] executing => finished
* [failover redis:20] waiting => executing
* [failover redis:18] waiting => executing
* [failover redis:16] waiting => executing
* [failover redis:14] waiting => executing
[2022-05-12T19:43:33.719496 Actions Status: 4 finished | 4 executing ]
* [failover redis:20] executing => finished
* [failover redis:18] executing => finished
* [failover redis:16] executing => finished
* [failover redis:14] executing => finished
Snapshot restore completed successfully.
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