k8s_node_kubeadm_init.sh

# Make sure you are NOT root for these commands! But it must be a sudoer user.

# Open the ports you need to expose outside the node
#sudo firewall-cmd --zone=public --add-port=6443/tcp --permanent         # Kubernetes API server
#sudo firewall-cmd --zone=public --add-port=2379-2380/tcp --permanent    # etcd server client API
#sudo firewall-cmd --zone=public --add-port=10250/tcp --permanent        # Kubelet API
#sudo firewall-cmd --zone=public --add-port=10251/tcp --permanent        # kube-scheduler
#sudo firewall-cmd --zone=public --add-port=10252/tcp --permanent        # kube-controller-manager
#sudo firewall-cmd --reload

# For sanity, just disable the entire firewall until you've figured out exactly what services you'll want to install.
systemctl disable firewalld --now	# Disable the firewall

# Start kubeadm
sudo kubeadm init --pod-network-cidr=192.168.0.0/16

###### NOTE THE OUTPUT: It has the token you need to add workers!!! ######