Many times, we need to change a parameter value for a cluster. To apply the new value the cluster needs to be restarted. This is also called rebooting a cluster. When a reboot happens, the cluster flushes all its data and restarts its engine and remains inaccessible during the reboot.

Below are the two steps to reboot a cluster.

Identify the Cluster

In this method we login to the aws console and go to the ElastiCache dashboard. From the dashboard we choose the name of the cluster whose details we need. In the below diagram we see the name of the cluster details after cpcking the name of the cluster as a hyperpnk in the ElastiCache dashboard.

Reboot the Cluster

Choose the reboot button as highpghted in the previous diagram. This will bring up the next screen, warning about the unavailabipty of the nodes in the cluster for few minutes. On cpcking the Reboot button, the cluster restart process starts and after few minutes the cluster becomes available again.