Configure DNS Nameserver Access

A well configured DNS server during XCO deployment enables XCO services access to a host DNS nameserver.

About this task

Follow this procedure to enable XCO service access to a host DNS nameserver. Use the script available in the /apps/efa/ directory on a TPVM and in the /opt/efa directory on the server.

Use this procedure when you do not configure DNS server before XCO installation. When you update DNS servers on the host, use the script to update the same on XCO services.

Note

This procedure should be used when the user does not configure dns server before XCO installation. When the user updates dns servers on the host, this script has to be used to update the same on XCO services.
Ensure that you are a root user or have sudo privileges.
Ensure that the DNS nameserver is valid.
In a multi-node deployment, ensure that you update the DNS nameserver on both nodes.

Procedure

To enable XCO services access to a host DNS nameserver, run the following command:
```
sudo <location of the script>/update-dns.sh --dns-action allow
```
To disable XCO services access to a host DNS nameserver, run the following command:
```
sudo <location of the script>/update-dns.sh --dns-action disallow
```
Note

You can change the DNS IP through netplan using the update-dns.sh script. For more details, see ExtremeCloud Orchestrator Release Notes, 3.5.0 .