Centralized Monitoring Error: Server linking is forbidden

Issue

Servers stopped appearing on the C-Monitoring page and were not sending data. Attempts to relink using /usr/sbin/cl-link-to-cln failed with the error Server linking is forbidden.

Environment

• Centralized Monitoring

Solution

The issue was resolved by restarting the monitoring-related services on the affected server. After running the following commands, the servers resumed sending statistics successfully:

service cl_node_exporter restart
service lvestats start

Cause

Possible Stale configuration with CLN

Useful links

https://cloudlinux.zendesk.com/hc/en-us/articles/10981808966172--internal-How-to-link-my-CloudLinux-OS-Shared-Pro-server-to-CLN