Modifying the DNS settings of Aria Operations for Logs

Products

• VMware Aria Suite

Issue/Introduction

This article provides steps to modify the domain name system resolution settings of the Aria Operations for Logs Virtual Appliance.
 

Environment

VMware Aria Operations for Logs 8.16+

Resolution

1. Log in to the primary node as root via SSH or vSphere console.
   
   
2. Open the network configuration file for editing.
   
   vi /etc/systemd/network/10-eth0.network
   
   
3. Update the DNS server IP addresses(es) on the lines beginning with DNS=
   (If no lines start with DNS=, add them within the [Network] section).  To modify the search domain append the domain to the Domains= setting.  If the line doesn't exist add the setting above the DNS settings like the example.
   
   Note: Aria Operations for Logs does not support using more than 2 DNS servers
   
   To use 2 DNS servers, there should be 2 lines in the 10-eth0.network file starting with DNS=
   
   Example
   

   [Match]
   Name=eth0
   
   [Network]
   Address=10.1.1.100/24
   Gateway=10.1.1.1
   Domains=<search domain>
   DNS=10.1.1.253
   DNS=10.1.1.254

   
   
   
4. Save the file and exit
   
   

   :wq

   
   
   
5. Delete legacy entries from resolved.conf
   
   

   sed -i '/^DNS=.*/d' /etc/systemd/resolved.conf

   
   
   
6. Restart services for changes to apply
   
   

   systemctl restart systemd-networkd
   systemctl restart systemd-resolved

   
   
   
7. Repeat steps 1-6 on all other nodes in the Aria Operations for Logs cluster one by one, performing the steps on the node with the ILB present last
   
   Note: The node with the ILB can be determined from the Administration -> Cluster page and will show as NodeName (ILB) where NodeName is the IP or FQDN of the node.