DNS Cluster - Could not communicate with remote API server

Symptoms

Within the DNS Clusters interface of WHM, you may find that a DNS Cluster reports the following error:

CONFIG_TEXT: Could not communicate with remote API server.

Cause

The message could appear for various reasons, though the two most common would be:

1. The DNS clusters are unable to communicate with one another due to connectivity issues.

2. The DNS Clusters do not have a "Reverse Trust" setup, and are set to "synchronize" between one another.

Resolution

To address the first issue, we recommend testing whether both servers can communicate with one another. From both servers, perform:

# telnet $ip 2087

Alternatively, If telnet is not installed, you can use nc.

# nc $ip 2087

Note: You must replace "$ip" with the IP of the server you're testing communication with.

If your servers can communicate with one another, then the issue may be that a "Reverse Trust Relationship" has not been established between the two servers.

You must set up a Reverse Trust relationship between each server in a DNS cluster. This relationship allows servers in a DNS cluster to share records. Reverse trust is only required if the DNS Cluster relationship is set to "synchronize." Please see our Guide to DNS Cluster Configurations for details on configuring the Reverse Trust relationship.

Additional Resources

Guide to DNS Cluster Configurations | cPanel & WHM Documentation