Set up and tear down a k8s cluster on schedule. Slightly over-engineered in that a cronjob with a few gcloud container cluster commands could do the same, but using Cloud Functions gives us the opportunity to trigger these functions in other ways in the future.
To deploy included Cloud Functions, first gcloud auth login then:
gcloud beta functions deploy getCluster --trigger-http
gcloud beta functions deploy createCluster --trigger-http
gcloud beta functions deploy deleteCluster --trigger-http
Hopefully the function names are self-explanatory; each can take an optional name parameter for the cluster, which defaults to dev-playground.
Functions can be called with
curl -H "Content-Type: application/json" -X POST \
-d '{"name": "<$cluster_name>"}' \
https://us-central1-lexical-cider-93918.cloudfunctions.net/<$function_name>
Includes Dockerfile for container that calls deleteCluster and createCluster on dev-playground from cron daily at midnight CST. This intentionally doesn't do any authentication; you'll want to run it from inside another cluster, where the default service account will already be authorized.