Install Kubernetes - q-uest/notes-doc-k8s-docker-jenkins-all-else GitHub Wiki
https://github.com/DeekshithSN/cheatsheet/blob/master/installtion_guide_ubuntu.md
Error received:
container runtime is not running
The following needed to be done for the above error received while running "kubeadm init" & "kubeadm join"
rm /etc/containerd/config.toml
systemctl restart containerd
kubeadm init
======== THE BELOW STEPS WERE NOT WORKING...DO NOT USE IT......
Note: The earlier version of Kubernetes (1.22.x) had had some issues, hence its previous version (1.21) of the tools - kubeadm, kubelet & kubectl were installed. They were installed by explicitly providing the version numbers with the command like -
#apt install -y kubeadm=1.21.0-00 kubelet=1.21.0-00 kubectl=1.21.0-00
Master (As root user)
apt update -y; apt install -y docker.io ;
curl -s https://packages.cloud.google.com/apt/doc/apt-key.gpg | sudo apt-key add ;
apt-add-repository "deb http://apt.kubernetes.io/ kubernetes-xenial main" ;
apt update -y
apt install -y kubeadm kubelet kubectl
#hostnamectl set-hostname master
kubeadm init --pod-network-cidr=10.244.0.0/16 ;
If you do not want to upgrade certain components, use the below command to do so:
sudo apt-mark hold kubelet kubeadm kubectl
- Make a non-root user to access kubernetes cluster:
Note: it is a mandatory task, it won’t work from ROOT user (Login as the user with the sudo privs)
mkdir -p $HOME/.kube;
sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config;
sudo chown $(id -u):$(id -g) $HOME/.kube/config
Execute the below:
kubectl apply -f https://raw.githubusercontent.com/coreos/flannel/master/Documentation/kube-flannel.yml ;
- Setting up Nodes (Run as ROOT user)
apt update -y ; apt install -y docker.io ;
#sudo hostnamectl set-hostname <NODE_NAME> [do not change node name, when AWS EBS/LB’s are used)
curl -s https://packages.cloud.google.com/apt/doc/apt-key.gpg | sudo apt-key add;
sudo apt-add-repository "deb http://apt.kubernetes.io/ kubernetes-xenial main" ;
apt update -y;
apt install -y kubeadm
(Copy the command like the below with the token from the Master and apply)
kubeadm join 172.31.85.86:6443 --token ztr3j4.usf6tyo9h7q9ien2 --discovery-token-ca-cert-hash sha256:593a00d0100e5687d103c626af730a7709f8d54f28286dfeb18a982438be834f
Note:
The token provided expires in 24 hours. If you want to add a new node 24 hours after creating the master, you would need to generate a new token on the Master and use that instead. The command for generating a new token -
kubeadm token create