Cluster aware updating
who cares about a pre and after setup I just want to install the updates. My cluster is hitting the download and after this one node is set on Pause.
CAU is currently not aware of Always On availability groups.
Patching your SQL Clusters is no problem unless you have a Windows Server 2012 cluster with SQL Server Always On availability groups.
then you can’t use CAU the #NNFW (next next finish way) For Cluster.
They said their production environment was down for more than 9 hours while they worked with Microsoft to resolve the issue. And restarting the instance underneath the primary replica with no failover is exactly the type of thing we expect High Availability to save us from. It had an issue that impacted some installs where processes named would keep running and use tons of CPU. It was pretty nasty, and it raised the issue, “Should you trust Service Packs?
” (Spoiler: no.) That issue wasn’t specific to AGs. It was dangerous advice to follow, because Service Packs are released very slowly these days. They’re incredibly smart, very dedicated, super helpful, and they work very hard to make a great product.
These mitigations are not guaranteed to solve all issues.