k8s master init and add node

目录

• 一. add google apt-key
  • 1.vim /etc/apt/source.list (use k8s repository (中科大源))
  • 2.add apt-key
• 二. k8s master init
  • 1.change hostname
  • 2.pull images
  • 3.shutdown swap and start kubelet
  • 4.update kube* (just one time)
  • 5.kubeadm init
  • 6.copy token from init output(use fork8s nodes join master cluster)
  • 7.pull network image
  • 8.run the following as a regular user and root
  • 9.apply network solution
• 三. k8s node add to master cluster(use this command when you wanna add node)
  • 1.repeat some steps on 二.
  • 2.add to master cluster

k8s tutorial series main reference

一. add google apt-key

1.vim /etc/apt/source.list (use k8s repository (中科大源))

deb http://us.archive.ubuntu.com/ubuntu/ xenial main restricted
deb http://us.archive.ubuntu.com/ubuntu/ xenial-updates main restricted
deb http://us.archive.ubuntu.com/ubuntu/ xenial universe
deb http://us.archive.ubuntu.com/ubuntu/ xenial-updates universe
deb http://us.archive.ubuntu.com/ubuntu/ xenial multiverse
deb http://us.archive.ubuntu.com/ubuntu/ xenial-updates multiverse
deb http://us.archive.ubuntu.com/ubuntu/ xenial-backports main restricted universe multiverse
deb http://security.ubuntu.com/ubuntu xenial-security main restricted
deb http://security.ubuntu.com/ubuntu xenial-security universe
deb http://security.ubuntu.com/ubuntu xenial-security multiverse
deb http://ppa.launchpad.net/tbfr/zabbix/ubuntu precise main
deb-src http://ppa.launchpad.net/tbfr/zabbix/ubuntu precise main
deb [arch=amd64] https://mirrors.ustc.edu.cn/kubernetes/apt kubernetes-xenial main
deb [arch=amd64] https://mirrors.ustc.edu.cn/kubernetes/apt kubernetes-xenial main

2.add apt-key

reference add google apt-key

apt-get update && apt-get install -y apt-transport-https
下载apt_key
cat kube_apt_key.gpg | sudo apt-key add -
echo "deb [arch=amd64] https://mirrors.ustc.edu.cn/kubernetes/apt kubernetes-xenial main" | sudo tee -a /etc/apt/sources.list
apt-get update
apt-get install -y kubelet kubeadm kubectl        //如果报错去掉-y试试

二. k8s master init

reference kubeadm 搭建 kubernetes 集群

1.change hostname

echo "192-168-43-134.master" > /etc/hostname
echo "127.0.0.1   192-168-43-134.master" >> /etc/hosts
sysctl kernel.hostname=192-168-43-134.master

2.pull images

images=(kube-proxy-amd64:v1.11.0 coredns:1.1.3 pause:3.1 kubedns-amd64:1.7 kube-scheduler-amd64:v1.11.0 kube-controller-manager-amd64:v1.11.0 kube-apiserver-amd64:v1.11.0 etcd-amd64:3.2.18 pause-amd64:3.1)

for imageName in ${images[@]} ; do
  docker pull vickeywu/$imageName
  docker tag vickeywu/$imageName k8s.gcr.io/$imageName
  docker rmi vickeywu/$imageName
done

3.shutdown swap and start kubelet

kubeadm reset
sudo swapoff -a
systemctl daemon-reload
systemctl stop kubelet
systemctl enable kubelet
systemctl start kubelet

4.update kube* (just one time)

apt-get update
apt-get install -y kubelet kubeadm kubectl

5.kubeadm init

kubeadm init --kubernetes-version=v1.11.0 --apiserver-advertise-address 192.168.43.131 --pod-network-cidr=10.244.0.0/16 --skip-preflight-checks

6.copy token from init output(use fork8s nodes join master cluster)

  kubeadm join 192.168.43.131:6443 --token 5x4hzc.bauzypcyezrjds06 --discovery-token-ca-cert-hash sha256:a03e0fe800e5a6af55a0238eebfb52b732ec6ac037f850871f54dc863f654130

7.pull network image

docker pull vickeywu/flannel:v0.10.0-amd64
docker tag vickeywu/flannel:v0.10.0-amd64 quay.io/coreos/flannel:v0.10.0-amd64
docker rmi vickeywu/flannel:v0.10.0-amd64

8.run the following as a regular user and root

su vickey
mkdir -p $HOME/.kube
sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config
sudo chown $(id -u):$(id -g) $HOME/.kube/config
echo "source <(kubectl completion bash)" >> ~/.bashrc
kubectl apply -f https://raw.githubusercontent.com/coreos/flannel/master/Documentation/kube-flannel.yml

9.apply network solution

reference blog

su root
mkdir -p $HOME/.kube
sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config
sudo chown $(id -u):$(id -g) $HOME/.kube/config
echo "source <(kubectl completion bash)" >> ~/.bashrc

三. k8s node add to master cluster(use this command when you wanna add node)

1.repeat some steps on 二.

1,2,3,4,7

2.add to master cluster

  kubeadm join 192.168.43.131:6443 --token 5x4hzc.bauzypcyezrjds06 --discovery-token-ca-cert-hash sha256:a03e0fe800e5a6af55a0238eebfb52b732ec6ac037f850871f54dc863f654130