Shulou(Shulou.com)06/01 Report--

The common configurations of redis master / slave + sentinel mode are as follows:

Odd-numbered redis acts as master and slave, and odd-numbered sentinel nodes monitor redismaster nodes. If master nodes fail, master nodes can be transferred automatically. Sentinel cluster can monitor multiple sets of redis masters and slaves.

Sentinel profile redis-sentinel.conf common configuration parameters:

1.

Sentinel monitor # quorum, the new master node must meet so many votes to be elected successfully example: sentinel monitor mymaster 127.0.0.1 6379 2

two。

Sentinel down-after-millseconds # timeout for judging that a master node is not online example: sentinel down-after-millseconds mymaster 30000

3.

Sentinel parallel-syncs # after the server was promoted to the primary server, there are at most several synchronized data from the server example: sentinel parallel-syncs mymaster 1

4.

Timeout for sentinel failover-timeout # failover example: sentinel failover-timeout mymaster 180000

Connect common sentinel commands with redis-cli:

Sentinel masters lists all monitored master nodes sentinel slaves acquires all slave node information of a master node sentinel get-master-addr-by-name obtains its corresponding ip address according to the master node name sentinel reset clears all operation states, including failover sentinel failover manually transferring the master node to a node

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