How to completely uninstall kubernetes

kubernetes uninstallation kubeadm
Kirill Liubun picture Kirill Liubun · Jun 22, 2017 · Viewed 124.3k times · Source

I installed kubernetes cluster using kubeadm following this guide. After some period of time, I decided to reinstall K8s but run into troubles with removing all related files and not finding any docs on official site how to remove cluster installed via kubeadm. Did somebody meet the same problems and know the proper way of removing all files and dependencies? Thank you in advance.

For more information, I removed kubeadm, kubectl and kubelet using apt-get purge/remove but when I started installing the cluster again I got next errors:

[preflight] Some fatal errors occurred:
    Port 6443 is in use
    Port 10251 is in use
    Port 10252 is in use
    /etc/kubernetes/manifests is not empty
    /var/lib/kubelet is not empty
    Port 2379 is in use
    /var/lib/etcd is not empty

Answer

Rib47 picture Rib47 · Mar 13, 2018

In my "Ubuntu 16.04", I use next steps to completely remove and clean Kubernetes (installed with "apt-get"): 

kubeadm reset
sudo apt-get purge kubeadm kubectl kubelet kubernetes-cni kube*   
sudo apt-get autoremove  
sudo rm -rf ~/.kube

And restart the computer.

Related questions

Restart container within pod

I have a pod test-1495806908-xn5jn with 2 containers. I'd like to restart one of them called container-test. Is it possible to restart a single container within a pod and how? If not, how do I restart the pod? The …

Read More
Command to delete all pods in all kubernetes namespaces

Upon looking at the docs, there is an API call to delete 'a' pod, but is there a way to kill all pods in all namespaces?

Read More
How can I keep a container running on Kubernetes?

I'm now trying to run a simple container with shell (/bin/bash) on a Kubernetes cluster. I thought that there was a way to keep a container running on a Docker container by using pseudo-tty and detach option (-td option …

Read More