Linux tonic.o2switch.net 4.18.0-553.30.1.lve.el8.x86_64 #1 SMP Tue Dec 3 01:21:19 UTC 2024 x86_64

//lib/firewalld/services/grafana.xml

 <?xml version="1.0" encoding="utf-8"?>
<service>
  <short>grafana</short>
  <description>Grafana is an open platform for beautiful analytics and monitoring</description>
  <port protocol="tcp" port="3000"/>
</service>