OpenShift plugin to Resize Machines

oc plugin to resize a Machine on OpenShift cluster.

!!! tldr "Important Note" - All steps described here will follow the safety way to resize a Machine in OCP 4.x. - This is not a official documentation and this plugin was tested on version 4.9

Install

Download the script:

curl -s https://github.com/mtulio/oc-plugin-machine-resize/blob/master/oc-machine_resize \
    -o /usr/local/bin/oc-machine_resize

Grant permissions to run:

chmod u+x /usr/local/bin/oc-machine_resize

Test it:

oc machine-resize -h

Commands

help

--help

list machines

--list-machines | -l

resize machine

--machine-name <machine_to_resize> --size <new_machine_size> [--force|--continue]

Extra args:

--force : force to skip healthy checks. Eg if node holds a etcd leader pod
--continue : continue to stop from broken script. Eg when node was already cordoned/stopped, and not resize from cloud provider. It will skip the initial sanity checks (Eg: Ready node)

Usage

list current machines

oc machine-resize -l

resize a nachine

oc machine-resize -N mrb-gptgl-master-1 -s m5.xlarge

resize a nachine that holds the etcd leader pod

oc machine-resize -N mrb-gptgl-master-0 -s m5.xlarge --force

Cast: resizing master node that host the etcd leader pod

Cast: resizing the node on Azure

ToDo Next

support new platforms: Azure
increase the final healthy checks:
- check if COs are not degraded
- check apiserver, etcd pods
- check etcd cluster: health ndoes, leaders, etc
- firing alarms?

ayaseen/oc-plugin-machine-resize