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.x (formerly vRealize Log Insight)

Resolution

Please note there are separate steps, depending on which version you are running:

Aria Operations for Logs 8.10 - 8.12

Select the Aria Operations for Logs VM in the vSphere Web Client and selecting Actions -> Power -> Shut Down Guest OS, shut down the guest OS gracefully
Go to the Configure tab, choose vApp Options from Settings drop down. Under Properties, select the key starting with vami.DNS that describes Domain Name Servers.
Click to SET VALUE, enter the new NameServers (whitespace separated, not commas) and click ok.
(example: x.x.x.x y.y.y.y)
From Actions -> Power -> Power On, power on the VM
SSH to that node with the root account
Open the VAMI network configuration utility by running the following command
/opt/vmware/share/vami/vami_config_net

Type 4 and then Enter to configure the DNS settings

At the DNS Server 1 prompt, enter your first new DNS server and press Enter.
At the DNS Server 2 (optional) prompt, enter your second new DNS server and press Enter.
At the Domain Name (optional) prompt, either enter your domain name or press Enter to skip.
At the Search Path (optional) prompt, either enter your search path or press Enter to skip

On the Main Menu, type 0 and press Enter to verify the current configuration

Confirm that the values have changed to what you applied in step 6
> DNS Servers: DNSServer1, DNSServer2
Type 1 and press Enter to exit the VAMI network configuration utility

Verify the updated DNS configuration by viewing the /etc/resolv.conf file:
cat /etc/resolv.conf
> nameserver DNSServer1
> nameserver DNSServer2
Repeat steps 1-8 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.

Aria Operations for Logs 8.14:

Select the VMware Aria Operations for Logs VM in the vSphere Web Client and click Power > Shut Down Guest OS
Navigate to the Configure tab, choose vApp Options from Settings drop down. Under Properties, select the key starting with vami.DNS that describes Domain Name Servers.
Click SET VALUE, enter the new NameServers (whitespace separated, not commas) and click OK.
(example: x.x.x.x y.y.y.y)
From Power > Power On, power on the VM
SSH to the node as root
Backup the resolved.conf file using the command

cp /etc/systemd/resolved.conf /etc/systemd/resolved.conf.bak

Using a text editor, edit the resolved.conf file to change the DNS addresses under the [Resolve] section

Example: DNS=<nameserver1> <nameserver2>

Note: Replace the nameserver1 and nameserver2 with your new DNS addresses

Save and exit the file
Restart the systemd-resolved service to apply the changes

systemctl restart systemd-resolved

Verify the updated DNS configuration by viewing the /etc/resolv.conf file:

cat /etc/resolv.conf

Repeat steps 1-10 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.

Aria Operations for Logs 8.16-8.18.1

Log in to the primary node as root via SSH or vSphere console.
Open the network configuration file for editing.

vi /etc/systemd/network/10-eth0.network
Locate the line(s) that start DNS=
Update the DNS server IP addresses(es)

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
DNS=10.1.1.253
DNS=10.1.1.254
```
Save the file and exit

:wq
Restart services for changes to apply

systemctl restart systemd-networkd
systemctl restart systemd-resolved
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.