Initial setup for all K8S installations on centos

00-k8s-centos-install-allnodes.sh

#!/bin/bash

swapoff -a
#vi  /etc/fstab and disable swap partition

yum install -y docker

systemctl enable docker && systemctl start docker

cat <<EOF > /etc/yum.repos.d/kubernetes.repo
[kubernetes]
name=Kubernetes
baseurl=https://packages.cloud.google.com/yum/repos/kubernetes-el7-x86_64
enabled=1
gpgcheck=1
repo_gpgcheck=1
gpgkey=https://packages.cloud.google.com/yum/doc/yum-key.gpg https://packages.cloud.google.com/yum/doc/rpm-package-key.gpg
EOF

yum install -y kubelet kubeadm kubectl
systemctl enable kubelet && systemctl start kubelet

cat <<EOF >  /etc/sysctl.d/k8s.conf
net.bridge.bridge-nf-call-ip6tables = 1
net.bridge.bridge-nf-call-iptables = 1
EOF
setenforce 0
sysctl --system

yum install -y kubelet kubeadm kubectl
systemctl enable kubelet && systemctl start kubelet

Install K8S on Centos - step 0 for all nodes.