Install Kubernetes on Ubuntu 18.04 LTS Step1: On All Machines ( Master & All nodes ):
sudo apt-get update sudo apt-get install -y apt-transport-https ca-certificates curl software-properties-common
curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add - sudo add-apt-repository "deb [arch=amd64] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable" sudo apt-get update ; clear sudo apt-get install -y docker-ce
sudo vi /etc/docker/daemon.json
{ "exec-opts": ["native.cgroupdriver=systemd"] }
sudo service docker restart
echo "deb http://apt.kubernetes.io/ kubernetes-xenial main" | sudo tee /etc/apt/sources.list.d/kubernetes.list curl -s https://packages.cloud.google.com/apt/doc/apt-key.gpg | sudo apt-key add - sudo apt-get update ; clear sudo apt-get install -y kubelet kubeadm kubectl Step2: On Master only: sudo kubeadm init --ignore-preflight-errors=all
sudo mkdir -p $HOME/.kube
sudo cp -i /etc/kubernetes/admin.conf
kubectl apply -f "https://cloud.weave.works/k8s/net?k8s-version=$(kubectl version | base64 | tr -d '\n')"
kubectl get nodes kubectl get all --all-namespaces Step3: On Nodes only: copy the kubeadm join token from master & run it on all nodes
Ex: kubeadm join 10.128.15.231:6443 --token mks3y2.v03tyyru0gy12mbt
--discovery-token-ca-cert-hash sha256:3de23d42c7002be0893339fbe558ee75e14399e11f22e3f0b34351077b7c4b56
Install Kubernetes on CENTOS
Step1: On All Machines ( Master & All nodes ):
setenforce 0 sed -i 's/^SELINUX=enforcing$/SELINUX=permissive/' /etc/selinux/config
sudo yum remove -y docker docker-client docker-client-latest docker-common docker-latest docker-latest-logrotate docker-logrotate docker-engine docker-ce docker-ce-cli containerd.io sudo yum install -y yum-utils device-mapper-persistent-data lvm2 sudo yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo sudo yum install -y docker-ce docker-ce-cli containerd.io systemctl enable --now docker systemctl start docker
cat < /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 --disableexcludes=kubernetes systemctl enable --now kubelet Step2: On Master only: sudo kubeadm init --ignore-preflight-errors=all
sudo mkdir -p $HOME/.kube
sudo cp -i /etc/kubernetes/admin.conf
kubectl apply -f "https://cloud.weave.works/k8s/net?k8s-version=$(kubectl version | base64 | tr -d '\n')"
kubectl get nodes kubectl get all --all-namespaces Step3: On Nodes only: copy the kubeadm join token from master & run it on all nodes
Ex: kubeadm join 10.128.15.231:6443 --token mks3y2.v03tyyru0gy12mbt
--discovery-token-ca-cert-hash sha256:3de23d42c7002be0893339fbe558ee75e14399e11f22e3f0b34351077b7c4b56
how to find kubeadm join token later
kubeadm token create --print-join-command --ttl=0