You can only reboot the node that you are currently using.

1. Log into the Cryptographic Security Platform Vault Management webGUI using an account with Domain Admin privileges.
2. In the top right, click the Switch to Appliance Management link.
3. In the top menu bar, click Cluster.

4. Go to the Servers tab.

5. Select Actions > System Reboot.

6. Click Proceed to acknowledge the warning message.