rladmin node 奴役
将节点的资源更改为副本。
| Redis 企业软件 |
|---|
将节点的资源更改为副本。
node enslave
将节点的所有终端节点和分片更改为副本。
rladmin node <ID> enslave
[demote_node]
[retry_timeout_seconds <seconds>]
Parameters
Parameter
Type/Value
Description
node
integer
Changes all of the node's endpoints and shards to replicas
demote_node
If the node is a primary node, changes the node to replica
retry_timeout_seconds
integer
Retries on failure until the specified number of seconds has passed.
Returns
Returns OK if the roles were successfully changed. Otherwise, it returns an error.
Use rladmin status shards to verify that the roles were changed.
Example
$ rladmin status shards node 2
SHARDS:
DB:ID NAME ID NODE ROLE SLOTS USED_MEMORY STATUS
db:6 tr02 redis:14 node:2 master 0-4095 3.2MB OK
db:6 tr02 redis:16 node:2 master 4096-8191 3.12MB OK
db:6 tr02 redis:18 node:2 master 8192-12287 3.16MB OK
db:6 tr02 redis:20 node:2 master 12288-16383 3.12MB OK
$ rladmin status nodes
CLUSTER NODES:
NODE:ID ROLE ADDRESS EXTERNAL_ADDRESS HOSTNAME SHARDS CORES FREE_RAM PROVISIONAL_RAM VERSION STATUS
*node:1 slave 192.0.2.12 198.51.100.1 3d99db1fdf4b 1/100 6 14.43GB/19.54GB 10.87GB/16.02GB 6.2.12-37 OK
node:2 master 192.0.2.13 198.51.100.2 fc7a3d332458 4/100 6 14.43GB/19.54GB 10.88GB/16.02GB 6.2.12-37 OK
node:3 slave 192.0.2.14 b87cc06c830f 5/120 6 14.43GB/19.54GB 10.83GB/16.02GB 6.2.12-37 OK
$ rladmin node 2 enslave demote_node
Performing enslave_node action on node:2: 100%
OK
$ rladmin status nodes
CLUSTER NODES:
NODE:ID ROLE ADDRESS EXTERNAL_ADDRESS HOSTNAME SHARDS CORES FREE_RAM PROVISIONAL_RAM VERSION STATUS
*node:1 master 192.0.2.12 198.51.100.1 3d99db1fdf4b 1/100 6 14.72GB/19.54GB 10.91GB/16.02GB 6.2.12-37 OK
node:2 slave 192.0.2.13 198.51.100.2 fc7a3d332458 4/100 6 14.72GB/19.54GB 11.17GB/16.02GB 6.2.12-37 OK
node:3 slave 192.0.2.14 b87cc06c830f 5/120 6 14.72GB/19.54GB 10.92GB/16.02GB 6.2.12-37 OK
$ rladmin status shards node 2
SHARDS:
DB:ID NAME ID NODE ROLE SLOTS USED_MEMORY STATUS
db:6 tr02 redis:14 node:2 slave 0-4095 2.99MB OK
db:6 tr02 redis:16 node:2 slave 4096-8191 3.01MB OK
db:6 tr02 redis:18 node:2 slave 8192-12287 2.93MB OK
db:6 tr02 redis:20 node:2 slave 12288-16383 3.06MB OK
node enslave endpoints_only
Changes the role for all endpoints on a node to replica.
rladmin node <ID> enslave endpoints_only
[retry_timeout_seconds <seconds>]
Parameters
Parameter
Type/Value
Description
node
integer
Changes all of the node's endpoints to replicas
retry_timeout_seconds
integer
Retries on failure until the specified number of seconds has passed.
Returns
Returns OK if the roles were successfully changed. Otherwise, it returns an error.
Use rladmin status endpoints to verify that the roles were changed.
Example
$ rladmin status endpoints
ENDPOINTS:
DB:ID NAME ID NODE ROLE SSL
db:5 tr01 endpoint:5:1 node:1 single No
db:6 tr02 endpoint:6:1 node:3 all-master-shards No
$ rladmin node 1 enslave endpoints_only
Performing enslave_node action on node:1: 100%
OK
$ rladmin status endpoints
ENDPOINTS:
DB:ID NAME ID NODE ROLE SSL
db:5 tr01 endpoint:5:1 node:3 single No
db:6 tr02 endpoint:6:1 node:3 all-master-shards No
node enslave shards_only
Changes the role for all shards of a node to replica.
rladmin node <ID> enslave shards_only
[retry_timeout_seconds <seconds>]
Parameters
Parameter
Type/Value
Description
node
integer
Changes all of the node's shards to replicas
retry_timeout_seconds
integer
Retries on failure until the specified number of seconds has passed.
Returns
Returns OK if the roles were successfully changed. Otherwise, it returns an error.
Use rladmin status shards to verify that the roles were changed.
Example
$ rladmin status shards node 3
SHARDS:
DB:ID NAME ID NODE ROLE SLOTS USED_MEMORY STATUS
db:5 tr01 redis:12 node:3 master 0-16383 3.04MB OK
db:6 tr02 redis:15 node:3 master 0-4095 4.13MB OK
db:6 tr02 redis:17 node:3 master 4096-8191 4.13MB OK
db:6 tr02 redis:19 node:3 master 8192-12287 4.13MB OK
db:6 tr02 redis:21 node:3 master 12288-16383 4.13MB OK
$ rladmin node 3 enslave shards_only
Performing enslave_node action on node:3: 100%
OK
$ rladmin status shards node 3
SHARDS:
DB:ID NAME ID NODE ROLE SLOTS USED_MEMORY STATUS
db:5 tr01 redis:12 node:3 slave 0-16383 2.98MB OK
db:6 tr02 redis:15 node:3 slave 0-4095 4.23MB OK
db:6 tr02 redis:17 node:3 slave 4096-8191 4.11MB OK
db:6 tr02 redis:19 node:3 slave 8192-12287 4.19MB OK
db:6 tr02 redis:21 node:3 slave 12288-16383 4.27MB OK
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