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Home Database Redis How to restart the redis cluster

How to restart the redis cluster

Apr 10, 2025 pm 08:57 PM
linux redis

Redis cluster restart steps: Close all Redis nodes; delete the persistent data directory of all Redis nodes; start all Redis nodes using configuration files.

How to restart the redis cluster

Redis cluster restart

How to restart Redis cluster?

The Redis cluster can be restarted by the following steps:

1. Close the Redis node

Use redis-cli command to stop all Redis nodes:

 <code>redis-cli -h [節(jié)點(diǎn)地址] -p [端口] shutdown</code>

2. Delete the data directory

Delete the persistent data directory for all Redis nodes:

  • Linux/Unix: /var/lib/redis/[節(jié)點(diǎn)名稱(chēng)]
  • Windows: %ProgramData%/redis/[節(jié)點(diǎn)名稱(chēng)]

3. Start the Redis node

Use redis-server command to start all Redis nodes:

 <code>redis-server [配置文件路徑]</code>

Detailed explanation:

Step 1: Close the Redis node

This step will safely close all Redis nodes, ensuring that data is not lost.

Step 2: Delete the data directory

Deleting the data directory will clear all persistent data. After a restart, the Redis cluster will rebuild its dataset from scratch.

Step 3: Start the Redis node

Starting a Redis node will start each node using the provided configuration file (usually redis.conf ). This configuration file should contain all the settings required by the cluster, such as node addresses, ports, and roles.

Notes:

  • Before performing any restart operations, make sure all nodes in the Redis cluster are in a healthy state.
  • If the cluster is persistent, make a backup before deleting the data directory.
  • Restarting the Redis cluster takes some time, depending on the size of the cluster and the amount of data.

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