如何通过kubeadm安装Kubernetes

0.安装containerd和配置linux系统

• 在/etc/sysctl.conf中追加以下内容并保存

  net.bridge.bridge-nf-call-ip6tables = 1
  net.bridge.bridge-nf-call-iptables = 1
  net.ipv4.ip_forward = 1

• 执行以下命令使之生效 重启系统时要重新执行此命令

  modprobe  br_netfilter
  sysctl -p

• 安装containered

  apt install containerd

• 配置containerd

  # 导出containerd配置以修改
  mkdir /etc/containerd 
  containerd config default > /etc/containerd/config.toml

• 修改配置文件SystemdCgroup=true使用系统Cgroup
• 修改pause镜像地址为阿里地址registry.aliyuncs.com/google_containers/pause:3.9

• 修改containered代理地址为可用地址

  (1).修改配置文件.位置/etc/containerd/config.yaml
  [plugins."io.containerd.grpc.v1.cri".registry]
        config_path = "/etc/containerd/certs.d"
  (2).创建文件夹 /etc/containerd/certs.d/docker.io
  (3).在新创建文件夹里创建文件hosts.toml写入以下内容,保存即可
  server = "https://docker.io"
  [host."https://docker.example.com"]  这里可换为ali的镜像代理
    capabilities = ["pull", "resolve"]

• 最后重启 

  sudo systemctl restart containerd

1.安装必要的软件及更新

sudo apt-get update
sudo apt-get install -y apt-transport-https ca-certificates curl

2.下载google cloud公开签名密钥

sudo curl -fsSLo /usr/share/keyrings/kubernetes-archive-keyring.gpg https://mirrors.aliyun.com/kubernetes/apt/doc/apt-key.gpg

3.添加k8s仓库

echo "deb https://mirrors.aliyun.com/kubernetes/apt/ kubernetes-xenial main" | sudo tee /etc/apt/sources.list.d/kubernetes.list

4.添加缺少的软件key

sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys B53DC80D13EDEF05

5.安装kubeadm等k8s组件

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

6.配置kubelet为开机启动

systemctl daemon-reload
systemctl enable kubelet

7.主结点初始化

kubeadm init --apiserver-advertise-address=$(hostname -i) \
--apiserver-advertise-address=192.168.0.134 \
--apiserver-cert-extra-sans=127.0.0.1 \
--pod-network-cidr=10.244.0.0/16 \
--image-repository=registry.aliyuncs.com/google_containers  --ignore-preflight-errors=Mem --fail-swap-on=false

8.设置主结点可调度

kubectl taint node k8s-master node-role.kubernetes.io/control-plane-

9.flannel网络安装

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

10.kubectl命令行工具配置设置

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