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使用kubeadm安装master节点

1.基本配置准备

# swapoff-关闭swap	swapoff -a	sed -ri "/swap/s@(.*)@#/&@g" /etc/fstab# Firewall limit-开放默认iptables规则	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-关闭selinux	echo "SELINUX=disabled" > /etc/selinux/config

2.安装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.安装 kube工具

#install kubectl kubelet kubeadm 版本为 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.下载需要的镜像

# image pull&tagimages=(	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/$imageName k8s.gcr.io/$imageNamedone

5.配置kebelet的 cgroups和image-repo-mirror

# set image-repo-mirror&cgroupsdocker info | grep -i cgroupecho '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.初始化 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.赋予当前用户 使用kubectl的权限

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

8.安装calico

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

将Node节点加入集群

1.基本配置准备

#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.安装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.安装kebelet，kubeadm ，kubectl

# install kubectl kubelet kubeadm 版本为 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.下载 kube-proxy image到本地，并重新tag

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

5.配置kebelet的 cgroups和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.将node节点加入集群

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

最后注意

1.一定要注意 关闭selinux，打开forward转发

2.若希望建立 多个kube-master构成的集群

在第一个master进行初始化时，就要指定所有的master-etcd-endpoint	并安装使用反向代理 负载 master集群；加入node节点时，指定的master-IP为反向代理IP

3.若要使用 kubectl命令，需要对此用户执行以下操作

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

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