实现
1、检查内核版本
2、检查docker是否已安装
3、安装docker,如因网络等原因失败循环安装至安装完成
#!/bin/bash #file:docker_install.sh #From:suminem function docker_choice() { echo "检查内核版本......" yum -y install bc &> /dev/null kenel=`uname -r` kenel=`echo ${kenel:0:3}` #从第一个开始向后取3个字符 if [ $(echo "${kenel} >= 3.10" | bc) = 1 ];then echo "检查Docker......!" docker -v &> /dev/null a=`echo $?` while [ $a -ne 0 ]; do echo "安装docker环境..." echo "安装基础依赖..." yum install yum-utils device-mapper-persistent-data lvm2 -y &> /dev/null echo "安装docker-ce.repo" yum-config-manager --add-repo https://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo &> /dev/null yum update &> /dev/null yum makecache fast &> /dev/null echo "安装docker环境..." yum install containerd.io docker-ce-19.03.8 docker-ce-cli-19.03.8 -y docker -v &> /dev/null a=`echo $?` done echo "安装完成!启动Docker" systemctl start docker systemctl enable docker &> /dev/null else echo "内核版本太低,请您升级内核版本!" fi }
# 执行函数
docker_choice
docker阿里云加速
sudo mkdir -p /etc/docker sudo tee /etc/docker/daemon.json <<-'EOF' { "registry-mirrors": ["https://gbpursha.mirror.aliyuncs.com"] } EOF sudo systemctl daemon-reload sudo systemctl restart docker
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