Procedure 8.6. Adding a Red Hat Enterprise Linux Host

1. Click the Hosts resource tab to list the hosts in the results list.
2. Click New to open the New Host window.
3. Use the drop-down menus to select the Data Center and Host Cluster for the new host.

   Important

   Red Hat recommends to keep Red Hat Enterprise Linux 6 and Red Hat Enterprise Linux 7 hosts in different clusters.
4. Enter the Name, Address, and SSH Port of the new host.
5. Select an authentication method to use with the host.
   • Enter the root user's password to use password authentication.
   • Copy the key displayed in the SSH PublicKey field to /root/.ssh/authorized_keys on the host to use public key authentication.
6. You have now completed the mandatory steps to add a Red Hat Enterprise Linux host. Click the Advanced Parameters button to expand the advanced host settings.
   1. Optionally disable automatic firewall configuration.
   2. Optionally disable use of JSON protocol.

      Note

      With Red Hat Enterprise Virtualization 3.5, the communication model between the Manager and VDSM now uses JSON protocol, which reduces parsing time. As a result, the communication message format has changed from XML format to JSON format. Web requests have changed from synchronous HTTP requests to asynchronous TCP requests.
   3. Optionally add a host SSH fingerprint to increase security. You can add it manually, or fetch it automatically.
7. You can configure the Power Management and SPM using the applicable tabs now; however, as these are not fundamental to adding a Red Hat Enterprise Linux host, they are not covered in this procedure.
8. Click OK.