Reconfigure DNS and Domain Search on the vRealize Operations Manager Analytics Cluster Nodes for Site Protection and Disaster Recovery for VMware Cloud Foundation

To avoid availability disruptions in the vRealize Operations Manager analytics cluster during a disaster in the protected VMware Cloud Foundation instance, you reconfigure the domain name and domain search path for all vRealize Operations Manager analytics cluster nodes to add the root domain of the recovery VMware Cloud Foundation instance.

For the following procedure, use the VMware Cloud Foundation Planning and Preparation Workbook.

UI Procedure

Log in to the primary vRealize Operations Manager node by using a Secure Shell (SSH) client at <vrealize_operations_manager_primary_node_fqdn> as root.
Reconfigure DNS and domain search on the vRealize Operations Manager Appliance.
1. Edit the /etc/systemd/network/10-eth0.network file.
```
vi /etc/systemd/network/10-eth0.network
```
2. In the Network section, add a DNS entry according to your VMware Cloud Foundation Planning and Preparation Workbook, and save the file.
  
  Note:
  You add an entry for the additional VMware Cloud Foundation instance only.
Reconfigure domain search on the on the vRealize Operations Manager Appliance.
1. Edit the /etc/systemd/resolved.conf file.
```
vi /etc/systemd/resolved.conf
```
2. Modify the Domains entry according to your VMware Cloud Foundation Planning and Preparation Workbook, and save the file.
  
  Note:
  You add space separated domains.
Repeat this procedure for the remaining vRealize Operations Manager analytics cluster nodes.

PowerShell Procedure

Start Windows PowerShell.

Replace the values in the sample code with values from your VMware Cloud Foundation Planning and Preparation Workbook and run the commands in the PowerShell console.

$sddcManagerFqdn = "sfo-vcf01.sfo.rainpole.io"
$sddcManagerUser = "administrator@vsphere.local"
$sddcManagerPass = "VMw@re1!"

$environmentName = "xint-env"
$dnsServers = "172.16.11.4 172.17.11.4"
$dnsSearchDomains = "rainpole.io"

Perform the configuration by running the command in the PowerShell console.

Set-vROPSDnsConfig -server $sddcManagerFqdn -user $sddcManagerUser -pass $sddcManagerPass -environmentName $environmentName -dnsServers $dnsServers -dnsSearchDomains $dnsSearchDomains