00installation.md

For Amazon Linux 2 systems Launch 2 amazon linux 2 machines 1 master and 1 slaves

On both master and slave nodes :

sudo su 
yum install docker -y 
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=0
gpgkey=https://packages.cloud.google.com/yum/doc/yum-key.gpg https://packages.cloud.google.com/yum/doc/rpm-package-key.gpg

EOF

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

setenforce 0

install kubelet, kubeadm and kubectl; start kubelet daemon

Do it on both master as welll as worker nodes

yum install -y kubelet kubeadm kubectl 

systemctl enable kubelet && systemctl start kubelet

On master node initialize the cluster

sudo kubeadm init --pod-network-cidr=192.168.0.0/16 --ignore-preflight-errors=NumCPU
#  sudo kubeadm init --pod-network-cidr=192.168.0.0/16 #Do this only if proper CPU cores are available
mkdir -p $HOME/.kube
sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config
sudo chown $(id -u):$(id -g) $HOME/.kube/config

On Worker nodes, Switch to the root mode

Copy kubeadm join command from output of "kubeadm init on master node"

<kubeadm join command copies from master node>

On Master Node: Clone a repository to get YAML files for Calico networking

yum install git -y
git clone https://github.com/ashishrpandey/kubernetes-training
cd kubernetes-training/15-calico/

For calico networking: apply on master node only

sudo kubectl apply -f etcd.yaml
sudo kubectl apply -f rbac.yaml
sudo kubectl apply -f calico.yaml

Take a pause of 2 minutes and see if the nodes are ready; run it on master node

kubectl get nodes

watch system pods

kubectl get pods --all-namespaces

on all the worker nodes do

mkdir -p $HOME/.kube
export KUBECONFIG=/etc/kubernetes/kubelet.conf

Optional

If you want your master to run user-defined pods as well, execute below

  kubectl taint nodes --all node-role.kubernetes.io/master-