Configuring Hostname Resolution

Veeam Backup & Replication connects to AHV Backup Proxy using the proxy hostname. If the DNS server on your network is not configured properly, the deployment of AHV Backup Proxy will finish with the warning that the proxy hostname is not resolved to its IP address. In this case, the AHV Backup Proxy is deployed on the AHV cluster but it is shown in the Veeam Backup & Replication infrastructure in the Unavailable state. When the proxy is in the Unavailable state, the functionality performed on the Veeam Backup & Replication side will not be available.

The hostname of AHV Backup Proxy server must be resolvable on the Veeam Backup & Replication server, and the hostname of the Veeam Backup & Replication server must be resolvable on the AHV Backup Proxy server. For instructions on how to configure resolution of hostnames, see the following guides:

• Configuring Veeam Backup & Replication server to resolve the hostname of AHV Backup Proxy server
• Configuring AHV Backup Proxy server to resolve hostname of Veeam Backup & Replication server

Configuring Veeam Backup & Replication server resolve the hostname of AHV Backup Proxy server

To make the Veeam Backup & Replication server correctly resolve the hostname of the AHV Backup Proxy server, the DNS zone where the Veeam Backup & Replication server is located must contain a DNS resource record for the AHV Backup Proxy server. To add a new DNS resource record, you can use DNS Manager deployed on the DNS server. For instructions, see the Add a DNS Resource Record section of the Microsoft's Networking guide. You can also use the Add-DnsServerResourceRecordA PowerShell command.

After adding the record on the DNS server, you will be able to see the proxy in the Veeam Backup & Replication console. Note that you may have to wait several minutes until Veeam Backup & Replication checks the availability of the host.

If, for some reason, you don't want to add a DNS resource record for the AHV Backup Proxy server in DNS Manager, you can add the hostname entry to the %windir%\System32\drivers\etc\hosts file on the Veeam Backup & Replication server:

1. On the Veeam Backup & Replication server, go to %windir%\System32\drivers\etc.
2. Open the hosts file with a text editor.
3. In the hosts file, add the IP address of the AHV Backup Proxy VM. You can find the IP address of the VM in the Nutanix Prism console.
4. Press [Tab] and add a hostname of AHV Backup Proxy.

5. Save changes in the hosts file and wait several minutes until AHV Backup Proxy becomes available in the Veeam Backup & Replication console.

Configuring AHV Backup Proxy VM resolve the hostname of Veeam Backup & Replication server

To make the AHV Backup Proxy server correctly resolve the hostname of the Veeam Backup & Replication server, the DNS zone where the AHV Backup Proxy server is located must contain a DNS resource record for the Veeam Backup & Replication server. To add a new DNS resource record, you can use DNS Manager deployed on the DNS server. For instructions, see the Add a DNS Resource Record section of the Microsoft's Networking guide. You can also use the Add-DnsServerResourceRecordA PowerShell command.

If, for some reason, you don't want to add a DNS resource record for the Veeam Backup & Replication server in DNS Manager, you can add the hostname entry to the \etc\hosts file on the AHV Backup Proxy server.

To configure the AHV Backup Proxy server to resolve the hostname of the Veeam Backup & Replication server, do the following:

1. Log in to the Prism Element or Prism Central console.
2. Open the VM dashboard.
3. In the list of VMs, select the AHV Backup Proxy VM and click Launch Console.
4. Log in to the VM console using credentials, you have specified for AHV Backup Proxy in Step 5. Specify Credentials.
5. Open the hosts file with a text editor:

6. At the end of the text, add the hostname of the Veeam Backup & Replication server and the AHV cluster.

7. Save the changes and exit the text editor.
8. Restart the networking service.

After adding the record on the hosts file, you will be able to see the proxy in the Veeam Backup & Replication console. Note that you may have to wait several minutes until Veeam Backup & Replication checks the availability of the host.