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Redis Sentinel manual failover

Claus-Theodor Riegg
August 16, 2016Software engineer at makandra GmbH


You're not able to control which redis replica will chosen for the failover.

  1. Connect to your sentinel instance:

    redis-cli -p <SENTINEL-PORT>
  2. Have a look at the configured masters, current master and the available replicas

    INFO sentinel
    SENTINEL master <master name>
    SENTINEL get-master-addr-by-name <master name> # IP and port only
    SENTINEL slaves <master name>
  3. Force a failover

    SENTINEL failover <master name> 
  4. After some seconds you can have a second look at the current master:

    SENTINEL get-master-addr-by-name <master name> 

    The IP should have changed.

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Posted by Claus-Theodor Riegg to makandra Operations (2016-08-16 11:02)