YARN REGISTRY DNS - Port Conflict Issue

[#1]

If you see errors related to YARN Registry DNS Bind Port.

Where the YARN Registry DNS is stopped, most probably due to a port conflict. Then go into the Advanced Configurations.

Look for the parameter RegistryDNS Bind Port and change is to a port that does not have a conflict. I changed it from 53 to 553.

Save configuration changes. Restart all components that are impacted.

This should take care of the issue and YARN Registry DNS will start successfully.