Uninstall Custom K3s Build

uninstall_custom_k3s_build.md

1. Stop all the K3s processes:

   sudo kill $(ps aux | grep 'k3s' | awk '{print $2}')

2. Create the k3s_uninstall.sh script with the following content and execute it:

   #!/bin/sh
   set -x
   systemctl stop k3s
   systemctl disable k3s
   systemctl daemon-reload
   
   rm -f /etc/systemd/system/k3s.service
   rm -f /usr/local/bin/k3s
   if [ -L /usr/local/bin/kubectl ]; then
       rm -f /usr/local/bin/kubectl
   fi
   if [ -L /usr/local/bin/crictl ]; then
       rm -f /usr/local/bin/crictl
   fi
   if [ -e /sys/fs/cgroup/systemd/system.slice/k3s.service/cgroup.procs ]; then
       kill -9 `cat /sys/fs/cgroup/systemd/system.slice/k3s.service/cgroup.procs`
   fi
   umount `cat /proc/self/mounts | awk '{print $2}' | grep '^/run/k3s'`
   umount `cat /proc/self/mounts | awk '{print $2}' | grep '^/var/lib/rancher/k3s'`
   
   rm -rf /var/lib/rancher/k3s
   rm -rf /etc/rancher/k3s
   rm -rf /etc/rancher