package-operator CRD v1.6.6 to v1.7.0 upgrade fix

crd_upgrade.sh

#!/bin/bash
set -euxo pipefail

PKO_NAMESPACE="package-operator-system"
PKO_POD_SELECTOR="app.kubernetes.io/name=package-operator"
PKO_COS_SELECTOR="package-operator.run/package=package-operator"

# get rid of currently running PKO
kubectl delete deploy -n "$PKO_NAMESPACE" package-operator-manager

# wait until all PKO pods are shut down
kubectl wait pod \
	-n "$PKO_NAMESPACE" \
	--selector="$PKO_POD_SELECTOR" \
	--for=delete --timeout=300s

# delete old non-pluralized CRDs
kubectl delete crd \
	objectslice.package-operator.run \
	clusterobjectslice.package-operator.run

# delete PKO's ClusterObjectSets (both old and new) but
# cascade='orphan' is very IMPORTANT (!)
# this will keep the other PKO CRDs in the cluster (otherwise packages will vanish and the newly upgraded PKO will uninstall all previously installed packages from the cluster
# I repeat: THIS IS IMPORTANT!
# TODO: idempotency: check if they are already deleted
kubectl delete clusterobjectset \
	-l="$PKO_COS_SELECTOR" \
	--cascade='orphan' \
	--wait=false

# Remove finalizers from existing PKO ClusterObjectSets to unblock their deletion
kubectl get clusterobjectset \
	-l="$PKO_COS_SELECTOR" \
	-o='jsonpath={.items.*.metadata.name}' \
	| xargs -I '{}' -d ' ' -n 1 \
		kubectl patch clusterobjectset '{}' \
			-p '{"metadata":{"finalizers": null}}' \
			--type=merge

# Wait until all PKO ClusterObjectsets are fully deleted
kubectl wait clusterobjectset \
	--selector="$PKO_COS_SELECTOR" \
	--for=delete --timeout=60s

# re run install-job for new version
kubectl apply -f https://github.com/package-operator/package-operator/releases/download/v1.7.0/self-bootstrap-job.yaml

# function retail() { tail -f -n +0 "$2" > "$1"; }