Rebooting nodes (cluster mode disabled only) - Amazon ElastiCache for Redis
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Rebooting nodes (cluster mode disabled only)

Some changes require that cluster nodes be rebooted for the changes to be applied. For example, for some parameters, changing the parameter value in a parameter group is only applied after a reboot.

For Redis (cluster mode disabled) clusters, those parameters are:

  • activerehashing

  • databases

You are able to reboot a node using only the ElastiCache console. You can only reboot a single node at a time. To reboot multiple nodes you must repeat the process for each node.

Redis (Cluster Mode Enabled) parameter changes

If you make changes to the following parameters on a Redis (cluster mode enabled) cluster, follow the ensuing steps.

  • activerehashing

  • databases

  1. Create a manual backup of your cluster. See Taking manual backups.

  2. Delete the Redis (cluster mode enabled) cluster. See Deleting a cluster.

  3. Restore the cluster using the altered parameter group and backup to seed the new cluster. See Restoring from a backup into a new cache.

Changes to other parameters do not require this.

You can reboot a node using the ElastiCache console.

To reboot a node (console)

  1. Sign in to the Amazon Web Services Management Console and open the ElastiCache console at https://console.amazonaws.cn/elasticache/.

  2. From the list in the upper-right corner, choose the Amazon Region that applies.

  3. In the left navigation pane, choose Redis.

    A list of clusters running Redis appears.

  4. Choose the cluster under Cluster Name.

  5. Under Node name, choose the radio button next to the node you want to reboot.

  6. Choose Actions, and then choose Reboot node.

To reboot multiple nodes, repeat steps 2 through 5 for each node that you want to reboot. You do not need to wait for one node to finish rebooting to reboot another.