docker initialization
https://get.docker.com/
curl -fsSL https://get.docker.com -o get-docker.sh
sh get-docker.sh
–>Configure the Docker daemon
sudo mkdir /etc/docker
cat <<EOF | sudo tee /etc/docker/daemon.json
{
“exec-opts”: [“native.cgroupdriver=systemd”],
“log-driver”: “json-file”,
“log-opts”: {
“max-size”: “100m”
},
“storage-driver”: “overlay2”
}
EOF
-> restart Docker
sudo systemctl enable docker
sudo systemctl daemon-reload
sudo systemctl restart docker
kubernetes installation
1)Update the apt package index and install packages needed to use the Kubernetes apt repository:
sudo apt-get update
sudo apt-get install -y apt-transport-https ca-certificates curl
2)Download the Google Cloud public signing key:
sudo curl -fsSLo /usr/share/keyrings/kubernetes-archive-keyring.gpg https://packages.cloud.google.com/apt/doc/apt-key.gpg
3)Add the Kubernetes apt repository:
echo “deb [signed-by=/usr/share/keyrings/kubernetes-archive-keyring.gpg] https://apt.kubernetes.io/ kubernetes-xenial main” | sudo tee /etc/apt/sources.list.d/kubernetes.list
4)Update apt package index, install kubelet, kubeadm and kubectl, and pin their version:
sudo apt-get update
sudo apt-get install -y kubelet kubeadm kubectl
sudo apt-mark hold kubelet kubeadm kubectl
Now initialize the kubeadm by loggin in as root user on master node
sudo -i
kubeadm init
mkdir -p $HOME/.kube
sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config
sudo chown $(id -u):$(id -g) $HOME/.kube/config
Alternatively, if you are the root user, you can run:
export KUBECONFIG=/etc/kubernetes/admin.conf
You should now deploy a pod network to the cluster.
Run “kubectl apply -f [podnetwork].yaml” with one of the options listed at:
https://kubernetes.io/docs/concepts/cluster-administration/addons/
Then you can join any number of worker nodes by running the following on each as root:
kubeadm join 172.31.2.224:6443 –token wuihk5.u19ve2jvh8gxxiab \
–discovery-token-ca-cert-hash sha256:64fe91d156381180fced25e6a9576e96150db8f9500419691703b16507f562c0
—–>Now install a pod network on master node and verify if the node is in ready state by executing kubectl get nodes
kubectl apply -f “https://cloud.weave.works/k8s/net?k8s-version=$(kubectl version | base64 | tr -d ‘\n’)”
summery
Summary of installation
- Install docker on the nodes (both) and execute the steps mentioned in Refer Here
- Install the kubeadm, kubelet and kubectl on both nodes Refer Here
- Now initialize the kubeadm by loggin in as root user on master node
kubeadm init
- Copy the commands to configure the kubectl and join command
- Now become the non root user and execute the following
- Now install a pod network on master node and verify if the node is in ready state by executing kubectl get nodes
kubectl apply -f "https://cloud.weave.works/k8s/net?k8s-version=$(kubectl version | base64 | tr -d '\n')"
- Now login into node and become root user (sudo -i) and execute the join command
- Now login into master node and execute kubectl get nodes to see the status of both nodes
HybrisWorld 