4.6. Installing Additional Hosts to a Self-Hosted Environment

⁠4.6. Installing Additional Hosts to a Self-Hosted Environment

Summary

Adding additional nodes to a self-hosted environment is very similar to deploying the original host, though heavily truncated as the script detects the environment.

As with the original host, additional hosts require Red Hat Enterprise Linux 6.5 with subscriptions to the appropriate Red Hat Enterprise Virtualization channels.

All steps in this procedure are to be conducted as the root user.

⁠

Procedure 4.4. Adding the host

Install the ovirt-hosted-engine-setup package.
```
# yum install ovirt-hosted-engine-setup
```
Configure the host with the deployment command.
```
# hosted-engine --deploy
```
Configuring Storage
Specify the storage type and the full address, using either the Fully Qualified Domain Name (FQDN) or IP address, and path name of the shared storage domain used in the self-hosted environment.
```
Please specify the storage you would like to use (nfs3, nfs4)[nfs3]:
Please specify the full shared storage connection path to use (example: host:/path): storage.example.com:/hosted_engine/nfs
```
Detecting the Self-Hosted Engine
The hosted-engine script detects that the shared storage is being used and asks if this is an additional host setup. You are then prompted for the host ID, which must be an integer not already assigned to an additional host in the environment.
```
The specified storage location already contains a data domain. Is this an additional host setup (Yes, No)[Yes]? 
[ INFO  ] Installing on additional host
Please specify the Host ID [Must be integer, default: 2]:
```

Configuring the System

The hosted-engine script uses the answer file generated by the original hosted-engine setup. To achieve this, the script requires the FQDN or IP address and the password of the root user of that host so as to access and secure-copy the answer file to the additional host.

[WARNING] A configuration file must be supplied to deploy Hosted Engine on an additional host.
The answer file may be fetched from the first host using scp.
If you do not want to download it automatically you can abort the setup answering no to the following question.
Do you want to scp the answer file from the first host? (Yes, No)[Yes]:       
Please provide the FQDN or IP of the first host:           
Enter 'root' user password for host Host-HE1.example.com: 
[ INFO  ] Answer file successfully downloaded

Configuring the Hosted Engine

Specify the name for the additional host to be identified in the Red Hat Enterprise Virtualization environment, and the password for the admin@internal user.

Enter the name which will be used to identify this host inside the Administrator Portal [hosted_engine_2]:           
Enter 'admin@internal' user password that will be used for accessing the Administrator Portal: 
Confirm 'admin@internal' user password:

Configuration Preview

Before proceeding, the hosted-engine script displays the configuration values you have entered, and prompts for confirmation to proceed with these values.

Bridge interface                   : eth1
Engine FQDN                        : HostedEngine-VM.example.com
Bridge name                        : rhevm
SSH daemon port                    : 22
Firewall manager                   : iptables
Gateway address                    : X.X.X.X
Host name for web application      : hosted_engine_2
Host ID                            : 2
Image size GB                      : 25
Storage connection                 : storage.example.com:/hosted_engine/nfs
Console type                       : vnc
Memory size MB                     : 4096
MAC address                        : 00:16:3e:05:95:50
Boot type                          : disk
Number of CPUs                     : 2
CPU Type                           : model_Penryn
         
Please confirm installation settings (Yes, No)[No]:

Result

After confirmation, the script completes installation of the host and adds it to the environment.

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