Centos 安装docker/kubelet/kubeadm/kubectl

参考: kuboard.cn/install/ins…

成功版本

运行

运行下面shell脚本

#!/bin/bash

# 在 master 节点和 worker 节点都要执行

# 安装 containerd
# 参考文档如下
# https://kubernetes.io/docs/setup/production-environment/container-runtimes/#containerd

# 阿里云 docker hub 镜像
export REGISTRY_MIRROR=https://registry.cn-hangzhou.aliyuncs.com

# 阿里云yum
#curl -o /etc/yum.repos.d/CentOS-Base.repo https://mirrors.aliyun.com/repo/Centos-8.repo
#yum makecache

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

sudo modprobe overlay
sudo modprobe br_netfilter

# Setup required sysctl params, these persist across reboots.
cat <<EOF | sudo tee /etc/sysctl.d/99-kubernetes-cri.conf
net.bridge.bridge-nf-call-iptables  = 1
net.ipv4.ip_forward                 = 1
net.bridge.bridge-nf-call-ip6tables = 1
EOF

# Apply sysctl params without reboot
sysctl --system

# 卸载旧版本
#yum remove -y docker-ce docker-ce-cli containerd.io

# 设置 yum repository
yum install -y yum-utils device-mapper-persistent-data lvm2
yum-config-manager --add-repo https://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo 
# 解决冲突
yum erase -y podman buildah
# 安装 最新版本
yum install -y docker-ce docker-ce-cli containerd.io

mkdir -p /etc/docker
sudo tee /etc/docker/daemon.json <<-"EOF"
{
    "registry-mirrors":["https://registry.cn-hangzhou.aliyuncs.com"]
}
EOF


systemctl daemon-reload
#systemctl enable containerd
systemctl restart docker


# 安装 nfs-utils
# 必须先安装 nfs-utils 才能挂载 nfs 网络存储
yum install -y nfs-utils
yum install -y wget

# 关闭 防火墙
systemctl stop firewalld
systemctl disable firewalld

# 关闭 SeLinux
setenforce 0
sed -i "s/SELINUX=enforcing/SELINUX=disabled/g" /etc/selinux/config

# 关闭 swap
swapoff -a
yes | cp /etc/fstab /etc/fstab_bak
cat /etc/fstab_bak |grep -v swap > /etc/fstab

# 配置K8S的yum源
cat <<EOF > /etc/yum.repos.d/kubernetes.repo
[kubernetes]
name=Kubernetes
baseurl=http://mirrors.aliyun.com/kubernetes/yum/repos/kubernetes-el7-x86_64
enabled=1
gpgcheck=0
repo_gpgcheck=0
gpgkey=http://mirrors.aliyun.com/kubernetes/yum/doc/yum-key.gpg
       http://mirrors.aliyun.com/kubernetes/yum/doc/rpm-package-key.gpg
EOF

# 卸载旧版本
yum remove -y kubelet kubeadm kubectl

# 安装kubelet、kubeadm、kubectl
# 将 ${1} 替换为 kubernetes 版本号，例如 1.20.1
yum install -y kubelet-1.22.1 kubeadm-1.22.1 kubectl-1.22.1

crictl config runtime-endpoint /run/containerd/containerd.sock

# 重启 docker，并启动 kubelet
systemctl daemon-reload
systemctl enable kubelet && systemctl start kubelet

docker --version
kubelet --version