k8s之一键部署docker及k8s脚本(适用于centos7,cnetos8及ubuntu)

#!/bin/sh
set -e
COLOR="echo -e \E[1;32m"
COLOR1="echo -e \E[1;31m"
END="\E[0m"
#ubuntu依赖包
ubuntu_page="
wget
apt-transport-https
ca-certificates
curl
software-properties-common
"
#centos依赖包
centos_page="
wget
yum-utils
device-mapper-persistent-data
lvm2
"

#centos7安装
install_docker_centos7() {
   . /etc/init.d/functions $> /dev/null
   ${COLOR}"开始安装 Docker....."${END}
   #安装依赖包
   for PAGE in ${centos_page};do
       rpm -q $PAGE &> /dev/null || yum -y -q install $PAGE
   done

   #添加源信息
   yum-config-manager --add-repo https://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo && action "添加源信息成功!" || { action "添加源信息失败,请检查命令!" false ; exit; }

   #更新安装docker-ce
   yum makecache fast &> /dev/null
   ${COLOR}"正在安装Docker,请稍等!"${END}
   yum -y install docker-ce-19.03.9-3.el7.x86_64 containerd.io-1.3.7-3.1.el7.x86_64 docker-ce-cli-19.03.9-3.el7.x86_64 &> /dev/null

   #配置镜像加速器
   mkdir -p /etc/docker
   cat > /etc/docker/daemon.json <<EOF
{
    "registry-mirrors": ["https://registry.docker-cn.com","http://hub-mirror.c.163.com","https://docker.mirrors.ustc.edu.cn"],
    "exec-opts": ["native.cgroupdriver=systemd"] 
}
EOF

   #重载配置文件
   systemctl daemon-reload

   #启动服务
   ${COLOR}"正在启动Docker,请稍等!"${END}
   sleep 2
   systemctl enable --now  docker && action "docker启动成功!" || action "docker启动失败,请检查配置文件!" false
}

#centos8安装
install_docker_centos8() {
   . /etc/init.d/functions $> /dev/null
   ${COLOR}"开始安装Docker,请稍等!"${END} 
   #安装依赖包
   for PAGE in ${centos_page};do
       rpm -q $PAGE &> /dev/null || yum -y -q install $PAGE
   done
   yum -y install https://mirrors.aliyun.com/docker-ce/linux/centos/7/x86_64/stable/Packages/containerd.io-1.2.13-3.1.el7.x86_64.rpm &> /dev/null
   #添加源信息
   cat > /etc/yum.repos.d/docker.repo <<EOF
[docker]
name=docker
gpgcheck=0
baseurl=https://mirrors.aliyun.com/docker-ce/linux/centos/8/x86_64/stable/
EOF

    #更新安装docker-ce
    yum clean all &> /dev/null 
    yum -y install docker-ce-19.03.9-3.el7.x86_64 containerd.io-1.3.7-3.1.el7.x86_64 docker-ce-cli-19.03.9-3.el7.x86_64 &> /dev/null && action "docker安装完成!" || action "docker按照失败!请检查网络及Yum源!" false

    #配置镜像加速器
    mkdir -p /etc/docker
    cat > /etc/docker/daemon.json <<EOF
{
    "registry-mirrors": ["https://registry.docker-cn.com","http://hub-mirror.c.163.com","https://docker.mirrors.ustc.edu.cn"],
    "exec-opts": ["native.cgroupdriver=systemd"]
} 
EOF

    #重载配置文件
    systemctl daemon-reload

    #启动服务
    ${COLOR}"正在启动Docker,请稍等!"${END}
    sleep 2
    systemctl enable --now  docker && action "docker启动成功!" || action "docker启动失败,请检查配置文件!" false
}

#ubuntu安装
install_docker_ubuntu() {
    ${COLOR}"开始安装 Docker....."${END}
    #更新源及安装依赖包
    apt-get update &> /dev/null
    for PAGE in ${ubuntu_page};do
        dpkg -s $PAGE &> /dev/null || apt -y install $PAGE &> /dev/null
    done

    #安装GPG证书
    curl -fsSL https://mirrors.aliyun.com/docker-ce/linux/ubuntu/gpg | sudo apt-key add -

    #写入软件源信息
    echo 'deb [arch=amd64] https://mirrors.aliyun.com/docker-ce/linux/ubuntu bionic stable' >> /etc/apt/sources.list
    #更新源信息
    apt -y update &> /dev/null

    #配置镜像加速器
    mkdir -p /etc/docker
    cat > /etc/docker/daemon.json <<EOF
{
     "registry-mirrors": ["https://registry.docker-cn.com","http://hub-mirror.c.163.com","https://docker.mirrors.ustc.edu.cn"]
}
EOF

    #安装docker-ce
    ${COLOR}"正在安装Docker,请稍等...."${END}
    apt-get -y install docker-ce &> /dev/null && ${COLOR}"docker启动成功!"${END} || ${COLOR1}"docker启动失败,请检查配置文件!"${END}
}

install_k8s_centos() {

    #添加k8s源
    cat <<EOF > /etc/yum.repos.d/kubernetes.repo
[kubernetes]
name=Kubernetes
baseurl=https://mirrors.aliyun.com/kubernetes/yum/repos/kubernetes-el7-x86_64/
enabled=1
gpgcheck=1
repo_gpgcheck=1
gpgkey=https://mirrors.aliyun.com/kubernetes/yum/doc/yum-key.gpg https://mirrors.aliyun.com/kubernetes/yum/doc/rpm-package-key.gpg
EOF
    #关闭交换分区(临时),永久需注释掉/etc/fastb文件中与交换分区相关内容
        swapoff -a
    
    #设置selinux
    setenforce 0

    #安装
    ${COLOR}"正在安装k8s相关软件,请稍等!"$END
    yum install -y kubelet kubeadm kubectl && ${COLOR}"k8S相关软件已安装完成!"$END || ${COLOR1}"k8S相关软件安装失败,请检查!"$END

    #设置开机启动
    systemctl enable --now kubelet && ${COLOR}"k8S启动成功!"$END || ${COLOR}"k8S启动失败,请检查配置文件!"$END
}

install_k8s_ubuntu() {
    ${COLOR}"开始安装k8s,请稍等!"$END

    #关闭交换分区(临时),永久需注释掉/etc/fastb文件中与交换分区相关内容
        swapoff -a

    #添加k8s源
    apt-get update && apt-get install -y apt-transport-https
    curl https://mirrors.aliyun.com/kubernetes/apt/doc/apt-key.gpg | apt-key add - 
    cat <<EOF >/etc/apt/sources.list.d/kubernetes.list
deb https://mirrors.aliyun.com/kubernetes/apt/ kubernetes-xenial main
EOF
    
    #更新源
    apt-get update
    
    #安装
    apt-get install -y kubelet kubeadm kubectl && ${COLOR}"k8S启动成功!"$END || ${COLOR}"k8S启动失败,请检查配置文件!"$END
}


#系统类型
ostype1=`awk -F'"' '/^VERSION_ID/{print $2}' /etc/os-release` 
ostype2=`awk -F'"' '/^NAME/{print $2}' /etc/os-release`
if [[ $ostype2 == "CentOS Linux" ]];then
    if [ $ostype1 = 8 ];then
        rpm -q docker-ce &> /dev/null && { ${COLOR}"Docker已安装,开始安装k8s!"${END};install_k8s_centos; } || { install_docker_centos8;install_k8s_centos; }
    elif [ $ostype1 = 7 ];then
    rpm -q docker-ce &> /dev/null && { ${COLOR}"Docker已安装,开始安装k8s!"${END};install_k8s_centos; } || { install_docker_centos8;install_k8s_centos; }
    fi
elif [[ $ostype2 == "Ubuntu" ]];then
    dpkg -s docker-ce &> /dev/null && { ${COLOR}"Docker已安装,开始安装k8s!"${END};install_k8s_ubuntu; } || { install_docker_ubuntu;install_k8s_ubuntu; }
fi