Tair (Redis® OSS-Compatible):Enable the Sentinel-compatible mode

Prerequisites

• The engine version of the instance is Redis 4.0 or later.

• The instance is deployed in a virtual private cloud (VPC).

  Note

  If the instance runs in the classic network, switch the network type of the instance to VPC. For more information, see Switch the network type from classic network to VPC.

Overview of Redis Sentinel

Redis Sentinel provides Redis with features such as master and replica monitoring, fault alerting, and automatic failover. Redis Sentinel is suitable for many business scenarios that use self-managed Redis databases and require high reliability. To facilitate the migration of these self-managed Redis databases to the cloud, Alibaba Cloud provides the Sentinel-compatible mode.

After you enable the Sentinel-compatible mode, you can run the Sentinel commands described in the following table.

SENTINEL sentinels <Name of a master>

SENTINEL get-master-addr-by-name <Name of a master>

Procedure

1. Log on to the console and go to the Instances page. In the top navigation bar, select the region in which the instance that you want to manage resides. Then, find the instance and click the instance ID.

2. In the left-side navigation pane, click Parameter Settings.

3. Enable the Sentinel-compatible mode for the instance.

   • If the instance is a read/write splitting instance or a cluster instance in proxy mode, set the sentinel_compat_enable parameter to 1.

   • If the instance is a standard instance, set the #no_loose_sentinel-enabled parameter to yes.

   After you enable the Sentinel-compatible mode for the instance, you can connect to the instance and run the SENTINEL sentinels test command. If the command execution is successful, the Redis Sentinel-compatible mode is enabled for the instance. The Sentinel-compatible mode does not provide additional endpoints. You can use the original endpoint, such as r-********.redis.rds.aliyuncs.com:6379, to connect to the instance.

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