k8s + CRI-O tear down script

k8s-tear-down.sh

#!/bin/bash

for k in {1..5};
do

	echo "k8s cleanup cycle #$k"

	kubeadm reset 1> /dev/null

	
        for i in `crioctl pod list --quiet`;
        do
                crioctl pod remove -id $i;
        done

	for i in `runc list -q`;
	do
        	runc kill $i SIGKILL 2> /dev/null;
        	runc delete --force $i;
	done

	for i in `runc list -q`;
	do
        	runc kill $i SIGKILL 2> /dev/null;
	        runc delete --force $i;
	done

	for i in `runc list -q`;
	do
        	runc kill $i SIGKILL 2> /dev/null;
	        runc delete --force $i;
	done

	docker rm -f $(sudo docker ps -a -q) 2> /dev/null
	docker rm -f $(sudo docker ps -a -q) 2> /dev/null


	sudo killall -9 qemu-lite-system-x86_64 2> /dev/null
	sudo killall -9 cc-oci-runtime 2> /dev/null
	sudo killall -9 cc-shim 2> /dev/null

	for i in `cc-oci-runtime list | cut -d " " -f 1`; do
		cc-oci-runtime kill $i SIGKILL 2> /dev/null
		cc-oci-runtime delete $i 2> /dev/null;
	done

	for i in `find /run/cc-oci-runtime/ -name "rootfs" 2> /dev/null`; do
		umount $i 2> /dev/null;
		rm -rf $i
	done

	for i in `find /run/cc-oci-runtime/ -name "*.conf" 2> /dev/null`; do
		umount $i 2> /dev/null;
		rm -rf $i 2> /dev/null
	done

	for i in `find /var/run/cc-oci-runtime/ -name "workloads" 2> /dev/null`; do
		for j in `ls $i`; do
			umount $i/$j 2> /dev/null
		done
	done

	rm -rf /var/run/cc-oci-runtime 2> /dev/null

	for i in `ls /var/lib/ocid/aufs/mnt/`; do
        	umount /var/lib/ocid/aufs/mnt/$i 2> /dev/null;
		rm -rf /var/lib/ocid/aufs/mnt/$i  
	done

	umount /var/lib/docker/aufs 2> /dev/null

	for i in `find /run/containers/storage/aufs-containers/ -name "shm" 2> /dev/null`; do
		umount $i 2> /dev/null;
		rm -rf $i
	done

	for i in `crioctl pod list --quiet`;
	do
		crioctl pod remove -id $i;
	done

	rm -rf /var/lib/ocid/aufs-containers/ 2> /dev/null
	mkdir /var/lib/ocid/aufs-containers/ 2> /dev/null
	rm -rf /run/containers/storage 2> /dev/null

	systemctl restart crio
	
	sleep 1
done

systemctl stop crio
systemctl stop cc-proxy
systemctl stop kubelet

echo "k8s cleanup done"