k8s-setup.txt

Documentation Link:
https://kubernetes.io/docs/setup/production-environment/tools/kubeadm/install-kubeadm/

Step 1: Configure Docker
apt-get update
apt-get -y install apt-transport-https ca-certificates curl  gnupg-agent software-properties-common
curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -
add-apt-repository "deb [arch=amd64] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable"
apt-get update && apt-get -y install docker-ce docker-ce-cli
systemctl start docker
	v

Step 2: Kernel Parameter Configuration
cat <<EOF | sudo tee /etc/sysctl.d/k8s.conf
net.bridge.bridge-nf-call-ip6tables = 1
net.bridge.bridge-nf-call-iptables = 1
EOF

sudo sysctl --system

Step 3 Configuring Repo and Installation:
curl -s https://packages.cloud.google.com/apt/doc/apt-key.gpg | sudo apt-key add -
cat <<EOF | sudo tee /etc/apt/sources.list.d/kubernetes.list
deb https://apt.kubernetes.io/ kubernetes-xenial main
EOF
apt-get update
apt-get install -y kubelet=1.19.4-00 kubeadm=1.19.4-00 kubectl=1.19.4-00

swapoff -a

Step 4: Initialize Cluster with kubeadm
kubeadm init --pod-network-cidr=10.244.0.0/16
mkdir -p $HOME/.kube
sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config
sudo chown $(id -u):$(id -g) $HOME/.kube/config

curl https://docs.projectcalico.org/v3.10/manifests/calico.yaml -O
POD_CIDR="<your-pod-cidr>" \
sed -i -e "s?10.244.0.0/16?$POD_CIDR?g" calico.yaml

#Step 5 Install Network Addon (flannel):
#kubectl apply -f https://raw.githubusercontent.com/coreos/flannel/master/Documentation/kube-flannel.yml
#Location of Manifest files for K8s components: