前置条件

执行一下命令

sudo   apt install -y gcc g++ make cmake automake autoconf libtool curl unzip protobuf-compiler libssl-dev libcurl4-gnutls-dev libreadline-dev vim-gnome net-tools git htop iftop
sudo apt-get install -y gnupg2
sudo apt-get install software-properties-common
sudo apt-get update

docker安装

curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -

sudo apt-key fingerprint 0EBFCD88

sudo add-apt-repository \
>    "deb [arch=amd64] https://download.docker.com/linux/ubuntu \
>    $(lsb_release -cs) \
>    stable"

设置docker的镜像仓库，大概

sudo apt-get update

更新源

sudo apt-get install docker-ce docker-ce-cli containerd.io

下载安装

sudo docker run hello-world

验证是否安装成功

K8S安装

参考https://kubernetes.io/zh/docs/setup/production-environment/tools/kubeadm/create-cluster-kubeadm/
https://last2win.com/2020/01/30/k8s-install-and-use-and-fix-bug/#dashboard

添加ubuntu代理

touch /etc/profile.d/proxy.sh
vim /etc/profile.d/proxy.sh

允许 iptables 检查桥接流量

cat <<EOF | sudo tee /etc/modules-load.d/k8s.conf
br_netfilter
EOF

cat <<EOF | sudo tee /etc/sysctl.d/k8s.conf
net.bridge.bridge-nf-call-ip6tables = 1
net.bridge.bridge-nf-call-iptables = 1
EOF
sudo sysctl --system

安装 kubeadm、kubelet 和 kubectl

sudo apt-get update
sudo apt-get install -y apt-transport-https ca-certificates curl
 
##下载 Google Cloud 公开签名秘钥这一步需要开启代理
sudo curl -fsSLo /usr/share/keyrings/kubernetes-archive-keyring.gpg https://packages.cloud.google.com/apt/doc/apt-key.gpg  

echo "deb [signed-by=/usr/share/keyrings/kubernetes-archive-keyring.gpg] https://apt.kubernetes.io/ kubernetes-xenial main" | sudo tee /etc/apt/sources.list.d/kubernetes.list

sudo apt-get update
sudo apt-get install -y kubelet kubeadm kubectl
sudo apt-mark hold kubelet kubeadm kubectl

将docker的cgroup改为systemd

如不修改，在kubeadm init中会出问题

vim /etc/docker/daemon.json
输入
{
  "exec-opts": ["native.cgroupdriver=systemd"]
}

然后重启docker
systemctl daemon-reload
systemctl restart docker

关闭swap

swapoff -a
vim /etc/fstab
改为

启动

systemctl enable kubelet && systemctl start kubelet

初始化kubeadm，这里需要关闭proxy,否者会出现tiemout

kubeadm init \
--apiserver-advertise-address=192.168.197.133 \
--image-repository registry.aliyuncs.com/google_containers  \
--pod-network-cidr=10.244.0.0/16 

初始化成功提示入如下命令

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

# 启动kubelet 设置为开机自启动
sudo systemctl enable kubelet
# 启动k8s服务程序
sudo systemctl start kubelet

查看节点情况

kubectl get nodes

flannel 配置

wget https://raw.githubusercontent.com/coreos/flannel/master/Documentation/kube-flannel.yml

kubectl apply -f kube-flannel.yml 

docker pull  quay.io/coreos/flannel:v0.15.1-amd64
###v0.15.1的版本信息由kube-flannel.yml中获取，配置时需要自行修改

查看节点信息
kubectl get nodes

Dashboard

kubectl apply -f https://raw.githubusercontent.com/kubernetes/dashboard/v2.2.0/aio/deploy/recommended.yaml
kubectl -n     kubernetes-dashboard edit service

将type的值改为NodePort

查看端口

kubectl -n kubernetes-dashboard get service