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Uninstall Kubernetes from CentOS / Redhat 7.x

Problem

User wants to completely remove kubernetes and docker from CentOS 7

Solution 

run the following commands on the Master nodes

sudo docker rm `docker ps -a -q`
sudo docker rmi `docker images -q`
sudo kubeadm reset
sudo yum remove kubeadm kubectl kubelet kubernetes-cni kube*
sudo yum autoremove
sudo rm -rf ~/.kube

rm -rf /etc/kubernetes
rm -rf /var/lib/etcd

 

Run the following commands on the Worker nodes

systemctl stop kubelet
sudo yum remove kubeadm kubectl kubelet kubernetes-cni kube*

#remove the images and containers

sudo docker rm `docker ps -a -q`
sudo docker rmi `docker images -q`

 

 

Stopping all docker containers

docker ps -a | awk ‘{print $1}’ | xargs docker stop

Force delete all containers

sudo docker rmi -f `docker images -q`