How do I configure Redis Sentinel for high availability?
To configure Redis Sentinel, you need to set up Sentinel instances that monitor your Redis master and replicas. Start by creating a configuration file for each Sentinel instance.
What should I include in the Sentinel configuration file?
In the configuration file, include the sentinel monitor
directive to specify the master, its IP, port, and quorum. Also, set the sentinel down-after-milliseconds
and sentinel failover-timeout
options.
How many Sentinel instances do I need?
It's recommended to have at least three Sentinel instances to ensure a reliable quorum for failover.
Can I run Sentinel on the same server as Redis?
Yes, you can run Sentinel on the same server as Redis, but it's better to separate them for improved reliability.
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