DNS Cluster

DNS clustering allows you to synchronize DNS records from one OpenPanel server to other machines.

To use this feature, all machines in the cluster must be running BIND9—either through the OpenPanel installation or as a standalone service/container.

Enable Clustering​

Click Enable DNS Clustering to activate the feature.

Add Slave Servers​

To set up a slave BIND9 server, follow the instructions in this guide.

Once the slave is ready:

1. Enter the slave server's IP address in the form.
2. OpenAdmin will attempt to connect and immediately sync DNS zones.
3. All future domains and DNS changes made by users will be automatically propagated to the slave server.

✅ To confirm the setup is working, check that the DNS zones appear on the slave server.

Remove Slave Server​

Currently, slave servers can only be removed via the terminal.

Disable Clustering​

Click Disable DNS Clustering to turn off the feature.