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Hibernate your Hive provisioned clusters

This repository has the source code as well as the deployment for two Kubernetes CronJobs that will Hibernate and Resume your OpenShift clusters.

Requirements

  • Red Hat Advanced Cluster Management for Kubernetes 2.1
  • OpenShift 4.5 and 4.6 clusters provisioned by ACM

Deploy

  1. Log into your ACM Hub on OpenShift
  2. Run the command:
make setup-go
  1. Monitor the CornJobs
oc get cronjobs

Time window

The default settings is to have the clusters runnings from 8am - 6pm Mon - Fri EST. You can adjust the times by modifying the two CronJobs:

deploy/hibernating-cronjob.yaml
deploy/running-cronjob.yaml

It uses the standard CronJob format and the check is done against a UTC clock. For EDT, that means +4hrs.

Skipping Clusters

The job will only target clusters deployed by Hive. It looks for the ClusterDeployment objects. If you put a label on either of these objects hibernate: skip they will be ignored by both CronJobs.

Runonce job

To bring clusters back to "Ready"

make running-go

## OR

oc create -f deploy-go/hibernation-job.yaml

To hibernate clusters

make hibernate-go

## OR

oc create -f deploy-go/running-job.yaml

Manual updates

Edit the ClusterDeployment resource for the cluster you want to change the state for. Find the spec.powerState key and change the value to either: Hibernating or Running

Building yourself

You'll need docker and a connection to a registry that your OpenShift can reach. Modify the Makefile and replace the value of REPO_URL with your own registry URL. Next modify the two CronJobs to use your new image:

deploy-go/hibernating-cronjob.yaml
deploy-go/running-cronjob.yaml

Running local (Python)

Setup the following environment variables, then run python hibernate-cronjob/action.py

export TARGET_ACTION=hibernating  # Or "running"
export CM_TOKEN=                  # Your OpenShift API token
export CM_API_URL                 # API URL for your cluster https://my.cluster.hostname.com:6443

Running local (Python)

Setup the following environment variables, then run go run ./pkg

export REPO_URL=             # The repository you will upload your image too
export VERSION=              # The image version you want to use

Time chart

Time Zone UTC offset Example
EST +5hr 11:22EST = 16:22UTC
EDT +4hr 11:22EDT = 15:22UTC
PST +8hr 11:22PST = 19:22UTC

Notes

  • Added to the open-cluster-management community 2020-11-25