What you do with the server/cluster after you take it out of service is up to you. Having automation like this to take things out of service means that you can

What you do with the server/cluster after you take it out of service is up to you. Having automation like this to take things out of service means that you can immediately restore production workloads to full functionality. I'm far more likely to ignore and work around a bug instead of doing a proper investigation when I've got pressure to get production back up because this server/cluster is a Special Snowflake that must be fixed in-place. Hardware fails, and bugs happen. There's no getting around it. Automation to handle this case is a good part of any strategy for identifying, understanding, and fixing bugs.