If you really need to restart your SQL Server clustered instance, you need to use the cluster commands to put the SQL cluster group offline, then put it back online.
If you just stop SQL Server using a NET STOP command you may cause a failover to happen.
But John has good advice - you should find out why you think you need to restart SQL Server. The problem can almost certainly be solved without the need to restart SQL Server.
Original author: https://github.com/SQL-FineBuild/Common/wiki/ 1-click install and best practice configuration of SQL Server 2019, 2017 2016, 2014, 2012, 2008 R2, 2008 and 2005.
When I give food to the poor they call me a saint. When I ask why they are poor they call me a communist - Archbishop Hélder Câmara