rladmin node snapshot
Manages snapshots of the configuration of a node's shards and endpoints.
Manages snapshots of the configuration of a node's shards and endpoints.
You can create node snapshots and use them to restore the node's shards and endpoints to a configuration from a previous point in time. If you restore a node from a snapshot (for example, after an event such as failover or maintenance), the node's shards have the same placement and roles as when the snapshot was created.
node snapshot create
Creates a snapshot of a node's current configuration, including the placement of shards and endpoints on the node and the shards' roles.
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>
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.