Question on Prepare

[rsliotta]

Hello....

So I have been testing the system upgrade controller and determined their is an issue in MY environment due to the way I have rook setup. Its a small test cluster.

Is there a way to use the prepare block to scale some deployments and statefulsets? Can someone provide an example?

[dweomer]

Hello....

So I have been testing the system upgrade controller and determined their is an issue in MY environment due to the way I have rook setup. Its a small test cluster.

Is there a way to use the prepare block to scale some deployments and statefulsets? Can someone provide an example?

Certainly you can effect state change to your cluster in the prepare container which happens prior to SUC cordoning/draining the node if such is configured. Your best bet to implement this would be to adapt something like what we do for the rancher/rke2-upgrade and rancher/k3s-upgrade containers which are, in a nutshell, minimally scriptable environments that effectively include a compatible kubectl (there are other approaches but this is a good place to start).

Please see:

• https://github.com/rancher/rke2-upgrade/blob/master/scripts/upgrade.sh
• https://github.com/k3s-io/k3s-upgrade/blob/master/scripts/upgrade.sh