Installing master node using kubeadm

1. Basic configuration preparation

# swapoff - Close swap
	swapoff -a
	sed -ri "/swap/s@(.*)@#/&@g" /etc/fstab
# Firewall limit - Open default iptables rules
	echo -e  "net.bridge.bridge-nf-call-ip6tables = 1\nnet.bridge.bridge-nf-call-iptables = 1\nnet.ipv4.ip_forward = 1"  >> /etc/sysctl.conf
	sysctl -p
#disabled selinux-close SELinux
	echo "SELINUX=disabled" > /etc/selinux/config

2. Install dokcer

#install-docker
	apt update && apt-get -y  install apt-transport-https  ca-certificates  curl  gnupg2 software-properties-common && curl -fsSL https://download.docker.com/linux/debian/gpg |  apt-key add - && add-apt-repository "deb [arch=amd64] https://download.docker.com/linux/debian  $(lsb_release -cs)  stable" && apt-get update &&  apt update && apt-get -y install docker-ce=17.06.0~ce-0~debian

3. Install the kube tool

#install kubectl kubelet kubeadm version 1.12.2
	apt-get update && apt-get install -y apt-transport-https curl && curl https://mirrors.aliyun.com/kubernetes/apt/doc/apt-key.gpg |apt-key add -  && echo "deb https://mirrors.aliyun.com/kubernetes/apt/ kubernetes-xenial main"  >>/etc/apt/sources.list.d/kubernetes.list  && apt update && apt-get install -y kubelet=1.12.2-00  kubeadm kubectl=1.12.2-00

4. Download the required image

# image pull&tag
images=(
	kube-apiserver:v1.12.2
	kube-controller-manager:v1.12.2
	kube-scheduler:v1.12.2
	kube-proxy:v1.12.2
	pause:3.1
	etcd:3.2.24
	coredns:1.2.2
	pause-amd64:3.1
	kubernetes-dashboard-amd64:v1.10.0
    	heapster-amd64:v1.5.4
    	heapster-grafana-amd64:v5.0.4
    	heapster-influxdb-amd64:v1.5.2
)
for imageName in ${images[@]} ; do
	docker pull registry.cn-hangzhou.aliyuncs.com/google_containers/$imageName
	docker tag registry.cn-hangzhou.aliyuncs.com/google_containers/$imageName k8s.gcr.io/$imageName
done

5. Configure kebelet's cgroups and image-repo-mirror

# set image-repo-mirror&cgroups
docker info | grep -i cgroup
echo 'KUBELET_EXTRA_ARGS="--cgroup-driver=cgroupfs --pod-infra-container-image=registry.cn-hangzhou.aliyuncs.com/google-containers/pause-amd64:3.0"' >/etc/default/kubelet	

6. Initialize kubeadm init

kubeadm init --kubernetes-version=v1.12.2 --apiserver-advertise-address=10.17.40.80  --pod-network-cidr=192.168.0.0/16

7. Give current users permission to use kubectl

	mkdir -p $HOME/.kube
	sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config
	sudo chown $(id -u):$(id -g) $HOME/.kube/config

8. Install calico (calico-official website)

kubectl apply -f  https://docs.projectcalico.org/v3.3/getting-started/kubernetes/installation/hosted/rbac-kdd.yaml
kubectl apply -f  https://docs.projectcalico.org/v3.3/getting-started/kubernetes/installation/hosted/kubernetes-datastore/calico-networking/1.7/calico.yaml

Join Node Nodes into the Cluster

1. Basic configuration preparation

#forward
	echo -e  "net.bridge.bridge-nf-call-ip6tables = 1\nnet.bridge.bridge-nf-call-iptables = 1\nnet.ipv4.ip_forward = 1"  >> /etc/sysctl.conf
	sysctl -p
# disabled swap
	swapoff -a
	sed -ri "/swap/s@(.*)@#/&@g" /etc/fstab
#disabled selinux
	echo "SELINUX=disabled" > /etc/selinux/config

2. Install docker

#install docker
	apt update && apt-get -y  install      apt-transport-https      ca-certificates      curl      gnupg2      software-properties-common && curl -fsSL https://download.docker.com/linux/debian/gpg |  apt-key add - && add-apt-repository "deb [arch=amd64] https://download.docker.com/linux/debian  $(lsb_release -cs)  stable" && apt-get update && apt-cache madison docker-ce && apt update && apt-get -y install docker-ce=17.06.0~ce-0~debian

3. Install kebelet, kubeadm, kubectl

# install kubectl kubelet kubeadm version 1.12.2
	apt-get update && apt-get install -y apt-transport-https curl
	curl https://mirrors.aliyun.com/kubernetes/apt/doc/apt-key.gpg |apt-key add -
	echo "deb https://mirrors.aliyun.com/kubernetes/apt/ kubernetes-xenial main"  >>/etc/apt/sources.list.d/kubernetes.list
	apt update
	apt-get install -y kubelet=1.12.2-00  kubeadm kubectl=1.12.2-00

4. Download kube-proxy image locally and tag it again

docker pull registry.cn-hangzhou.aliyuncs.com/google_containers/kube-proxy:v1.12.2
docker tag registry.cn-hangzhou.aliyuncs.com/google_containers/kube-proxy:v1.12.2  k8s.gcr.io/kube-proxy:v1.12.2

5. Configure kebelet's cgroups and image-repo-mirror

# set image-repo-mirror&cgroups
	docker info | grep -i cgroup
	echo 'KUBELET_EXTRA_ARGS="--cgroup-driver=cgroupfs --pod-infra-container-image=registry.cn-hangzhou.aliyuncs.com/google-containers/pause-amd64:3.0"' >/etc/default/kubelet

6. Add node nodes to the cluster

kubeadm join 10.17.40.80:6443 --token qirpum.xiuhtnvipabkqx0q --discovery-token-ca-cert-hash sha256:e2d82dfe71516cbcd64764737e3f20ecf149d2bece14d2befd84b3b16f61bd27

Last note

1. Be careful to close selinux and open forward forwarding

2. If you want to build a cluster of kube-master s

	When the first master initializes, you specify all master-etcd-endpoint
	And install the master cluster using reverse proxy load; when joining node, the specified master-IP is reverse proxy IP

3. To use the kubectl command, you need to do the following for this user

	mkdir -p $HOME/.kube
	sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config
	sudo chown $(id -u):$(id -g) $HOME/.kube/config