Kubernetes App Upgrade Tip
Major version upgrades
Makesure you disable your health probes when doing a major version upgrade, this is to ensure any schema updates that may delay the startup can sucessfully run without the health checks killing the process and going into a crashloop or even worse cause corruption.
Just comment out httpget, path & port and add exec, command ls. I did use to adjust the timers, but I think this way is more eloquent.