Script to stop Kubernetes and container services on the control plane node and worker nodes

shutdown_k8s_node.sh

#!/bin/bash
# Script to stop Kubernetes and container services on any node (control or worker)

echo "This script is running on node: $(hostname)"

# Drain the node if it's a worker (assuming hostnames like 'worker1', 'worker2', etc.)
kubectl drain $(hostname) --ignore-daemonsets

# Stopping all running containers
echo "Stopping containers on $(hostname)..."
sudo crictl stopp $(sudo crictl ps -q)

# Stopping Kubernetes services
echo "Stopping kubelet service on $(hostname)..."
sudo systemctl stop kubelet

echo "Stopping containerd service on $(hostname)..."
sudo systemctl stop containerd

# Delaying poweroff by 30 seconds
echo "$(hostname) will power off in 30 seconds..."
sleep 30

# Power off the machine
sudo poweroff

# chmod +x shutdown_k8s_node.sh && ./shutdown_k8s_node.sh