shutdown rook

rook-shutdown.sh

#!/bin/bash
# This script shuts down a rook-ceph cluster
# Please DON'T use this. It is only for demonstration purposes.

set -eux -o pipefail
force=false
while getopts "f" arg; do
	case $arg in
		f)
		force=true
		;;
		*)
		echo "usage ..."
		exit 1
		;;
	esac
done

if ! kubectl -n rook-ceph exec deploy/rook-ceph-tools -- ceph health | grep -q HEALTH_OK; then
	>&2 echo "ceph cluster not healthy"
	if ! $force; then
		exit 1
	fi
	>&2 echo "using the force to continue"
fi

# shutdown rook-ceph components
bye() {
	local deployment
	deployment="$1"
	kubectl -n rook-ceph scale deploy -l "app=$deployment" --replicas=0
	until [[ $(kubectl -n rook-ceph get pods -l "app=$deployment" -ogo-template='{{len .items}}') -eq 0 ]]; do
		echo "waiting for app=$deployment to scale to 0"
		sleep 5
	done
}

echo "shutdown rook-ceph-operator"
kubectl -n rook-ceph scale deploy/rook-ceph-operator --replicas=0
until [[ $(kubectl -n rook-ceph get pods -l "app=rook-ceph-operator" -ogo-template='{{len .items}}') -eq 0 ]]; do
	echo "waiting for deploy/rook-ceph-operator to scale to 0"
	sleep 5
done

echo "disable ceph settings"
kubectl -n rook-ceph exec deploy/rook-ceph-tools -- ceph osd set noout
kubectl -n rook-ceph exec deploy/rook-ceph-tools -- ceph osd set nobackfill
kubectl -n rook-ceph exec deploy/rook-ceph-tools -- ceph osd set norecover

echo "shutdown rook-ceph-mgr"
bye rook-ceph-mgr
echo "shutdown rook-ceph-osds"
bye rook-ceph-osd
until [[ $(kubectl -n rook-ceph exec deploy/rook-ceph-tools -- ceph osd tree up | grep osd | wc -l) -eq 0 ]]; do
	echo "waiting for osds to be down"
	echo "you might need to run:"
	echo " kubectl -n rook-ceph exec deploy/rook-ceph-tools -- ceph osd down osd.X"
	echo "to mark individual osds"
	sleep 5
done

echo "shutdown rook-ceph-mon"
bye rook-ceph-mon


echo "To restart the cluster use"
echo " kubectl -n rook-ceph scale --replicas=1 deploy/rook-ceph-operator"
echo "remember to change out,backfill,recover when you are done"