国内部署kubernetes

虚机为ubuntu16.04，准备安装k8s 1.18版本， 一个master节点，一个work节点举例。

升级操作系统

apt-get update
apt-get upgrade -y 

安装docker-ce

每个k8s都需要安装，选用docker 5:18版本

# 部署docker
apt-get remove docker docker-engine docker.io containerd runc
apt-get update
apt-get install \
    apt-transport-https \
    ca-certificates \
    curl \
    gnupg-agent \
    software-properties-common
curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -
add-apt-repository \
   "deb [arch=amd64] https://download.docker.com/linux/ubuntu \
   $(lsb_release -cs) \
   stable"
apt-get update
# apt-cache madison docker-ce
# apt-cache madison docker-ce-cli
apt-get install docker-ce=5:18.09.9~3-0~ubuntu-xenial docker-ce-cli=5:18.09.9~3-0~ubuntu-xenial containerd.io

dockers代理

tee /etc/docker/daemon.json  <<-'EOF'
{
  "exec-opts": ["native.cgroupdriver=systemd"],
  "registry-mirrors": [
    "https://wht4c63r.mirror.aliyuncs.com",
    "https://docker.mirrors.ustc.edu.cn",
    "https://registry.docker-cn.com",
    "https://reg-mirror.qiniu.com"
  ]
}
EOF
systemctl daemon-reload
systemctl  restart docker

安装kubeadm，kubelet，kubectl

设置阿里云 k8s 源

国内无法访问k8s.io，需要使用阿里云kubernetes源

curl https://mirrors.aliyun.com/kubernetes/apt/doc/apt-key.gpg | apt-key add -
tee /etc/apt/sources.list.d/kubernetes.list <<-'EOF'
deb https://mirrors.aliyun.com/kubernetes/apt/ kubernetes-xenial main
EOF
apt-get update
apt-cache madison kubeadm
apt install kubeadm=1.18.16-00 kubectl=1.18.16-00 kubelet=1.18.16-00

提前拉镜像

k8s.gcr.io的镜像国内也无法下载，参考https://blog.csdn.net/bbwangj/article/details/85017765，先将需要的镜像列出，kubeadm config images list，然后更换为阿里云的docker源，拉到本地之后，docker tag更改

kubeadm config images list |sed -e 's/^/docker pull /g' -e 's#k8s.gcr.io#docker.io/registry.aliyuncs.com/google_containers#g' |sh -x

docker images |grep registry.aliyuncs.com/google_containers |awk '{print "docker tag ",$1":"$2,$1":"$2}' |sed -e 's#registry.aliyuncs.com/google_containers#k8s.gcr.io#2' |sh -x 

master 节点

kubeadm init --pod-network-cidr 10.10.0.0/16 --kubernetes-version 1.18.16

安装flannel，如下载失败，可以使用浏览器下载kube-flannel.yml文件

kubectl apply -f https://raw.githubusercontent.com/coreos/flannel/master/Documentation/kube-flannel.yml

work节点

kubeadm join 192.168.3.15:6443 --token hnhx8f.jfdtdwkhg0v8hmus \
    --discovery-token-ca-cert-hash sha256:4a95483da6377ec7ddd57df92a4839802d579cc16e0e3fde84b357313c7be54a

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