Shutting Down a Cluster Using the Installer Shutdown Button

You can use a single button to shut down software on a cluster.

The Shutdown button appears on the status page of the Installer web interface when you connect to an installed cluster using Installer 1.6 or later. The Shutdown button shuts down Warden and Zookeeper, which in turn shut down other running services that are part of a cluster. When you use the Shutdown button, the Installer implements the same orderly shutdown used to perform software upgrades.

The Shutdown button works differently depending on where the cluster is deployed:

Deployment	Shutdown Button Behavior
On premise	Does not stop non-HPE software and does not power off the nodes.
In the cloud	Shuts down (but does not remove) all the nodes in the cluster: If the installer node is part of the cluster, the installer node is not shut down, but Warden shuts down the services on the installer node. To shut down the installer node, use AWS-console or Azure-portal commands to stop the instance. CAUTION: If a shutdown is initiated on an AWS cluster using an instance store, all data will be lost.

Deployment

Shutdown Button Behavior

On premise

Does not stop non-HPE software and does not power off the nodes.

In the cloud

Shuts down (but does not remove) all the nodes in the cluster:

If the installer node is part of the cluster, the installer node is not shut down, but Warden shuts down the services on the installer node.
To shut down the installer node, use AWS-console or Azure-portal commands to stop the instance.

CAUTION:

If a shutdown is initiated on an AWS cluster using an instance store, all data will be lost.

To use the Shutdown button:

Review Shutting Down a Cluster for some pre-shutdown steps you may want to perform before shutting down Warden and Zookeeper.
Use a browser to connect to the cluster using the Installer URL:
```
https://<Installer Node hostname/IPaddress>:9443
```
On the status screen, click the Shutdown button. The Installer asks you if you want to continue.
Click OK. The Installer displays the Authentication screen.
Enter your authentication information if requested, and click Shutdown. The installer begins the shutdown process.
To restart software on the cluster, see Starting Up a Cluster Using the Installer Startup Button.

Note: Do not attempt to restart the cluster until you have confirmed that it is shut down. For an on-premise cluster, the presence of the Startup button on the Installer status page indicates that the cluster is shut down and ready to be started. For a cluster deployed in the cloud, the Startup button must be present, and you must use the AWS or Azure console to verify that the servers are down before restarting.