k8s安装-简洁版

安装 openssh-server，提供远程连接

sudo apt install -y openssh-server
sudo apt-get remove vim-common
apt-get install vim
sudo vi /etc/ssh/sshd_config
sudo systemctl restart ssh

sudo echo k8s-node-2 > /etc/hostname
sudo vim /etc/hosts
sudo ufw enable
sudo ufw allow 6443
sudo ufw status
sudo swapoff -a && sudo sed -i 's/^\/swap.img\(.*\)$/#\/swap.img \1/g' /etc/fstab && free

安装docker

sudo apt-get remove docker docker-engine docker.io containerd runc
sudo apt-get update
sudo apt-get install -y ca-certificates curl gnupg lsb-release
sudo mkdir -p /etc/apt/keyrings
curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo gpg --dearmor -o /etc/apt/keyrings/docker.gpg
 echo \
  "deb [arch=$(dpkg --print-architecture) signed-by=/etc/apt/keyrings/docker.gpg] https://download.docker.com/linux/ubuntu \
  jammy stable" | sudo tee /etc/apt/sources.list.d/docker.list > /dev/null
sudo chmod a+r /etc/apt/keyrings/docker.gpg
sudo apt-get update
sudo apt-get update
sudo apt-get install -y docker-ce docker-ce-cli containerd.io docker-compose-plugin
sudo systemctl list-unit-files | grep docker
sudo systemctl stop containerd.service
sudo cp /etc/containerd/config.toml /etc/containerd/config.toml.bak
sudo containerd config default > $HOME/config.toml
sudo cp $HOME/config.toml /etc/containerd/config.toml
sudo sed -i "s#registry.k8s.io/pause#registry.cn-hangzhou.aliyuncs.com/google_containers/pause#g" /etc/containerd/config.toml
sudo sed -i "s#SystemdCgroup = false#SystemdCgroup = true#g" /etc/containerd/config.toml

sudo systemctl restart docker.service
#开机自启
sudo systemctl enable docker.service
#开机自启
sudo systemctl enable --now containerd.service
systemctl list-unit-files | grep docker
sudo tee /etc/docker/daemon.json <<-'EOF'
{
  "registry-mirrors": ["https://hnkfbj7x.mirror.aliyuncs.com"],
    "exec-opts": ["native.cgroupdriver=systemd"]
}
EOF
sudo systemctl daemon-reload
sudo systemctl restart docker
sudo docker info

 安装 k8s 1.25.3 所需依赖

sudo apt-get update && sudo apt-get install -y apt-transport-https
curl https://mirrors.aliyun.com/kubernetes/apt/doc/apt-key.gpg | sudo apt-key add - 
sudo vim /etc/apt/sources.list.d/kubernetes.list
deb https://mirrors.aliyun.com/kubernetes/apt/ kubernetes-xenial main
sudo apt-get update
sudo apt-get install -y kubelet=1.25.3-00 kubeadm=1.25.3-00 kubectl=1.25.3-00
sudo systemctl daemon-reload
sudo systemctl restart kubelet
sudo systemctl enable kubelet
sudo systemctl status kubelet

#该命令执行完会输出一条join命令，需要node节点执行，需要复制保存下载
sudo kubeadm init --image-repository=registry.aliyuncs.com/google_container

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

一些查看命令

#查看集群信息
kubectl cluster-info
#查看pod信息 kubectl get pods --all-namespaces -o wide
#查看节点信息
kubectl get nodes
#查看cs信息
kubectl get cs

 配置网络