Creating Alert Rule using Prometheus on the OCP 4.6 Openshift Container Platform

Creating Alert Rule using Prometheus on the OCP 4.6 Openshift Container Platform

I need to create the Alert Rule using Prometheus on the OCP 4.6 Openshift Container Platform
Also I want generate the Alert against node_exporter, haproxy_exporter, and snmp_exporter, delhw_exporter

After generating I need to confirm this alert on the AlertManager using default Prometheus

Also using user-defined Prometheus also.

Can any one share the detail steps with me.