Starting and Stopping Oracle Cluster (RAC)

In this article I will explain how to start and stop a cluster (RAC). To find out hot to start and stop High Availability Services (HAS) and other Grid Infrastructure resources in a standalone GI installation, check this article.
We can either use “crsctl stop/start cluster” command or “cractl start/stop crs” command to accomplish this task. The difference between both method is as follows

CRS-4563: Insufficient user privileges

[grid@dbnode1 ~]$ crsctl start crs CRS-4563: Insufficient user privileges. CRS-4000: Command Start failed, or completed with errors.