一键安装配置检查docker-ce shell脚本

#!/bin/bash

if [ "$UID" -ne 0 ];then
    echo -e "\033[33mWarn: must be root to run this script.\033[0m"
    exit 1
fi
if [ `echo $#` != '1' ];then
    echo -e "\033[33mWarn: use $0 ['docker_hasten_url']\033[0m"
    exit 1
fi

DOCKER_HASTEN_URL=$1

function check_stage(){
    local stage_name=$1
    if [ `echo $?` == '0' ];then
        echo -e "\033[32m${stage_name} stage ---> exec success.\033[0m"
    else
        echo -e "\033[31m${stage_name} stage ---> exec fail.\033[0m"
        exit 1
    fi
}

function update_docker_repo01(){
    echo -e "\033[32mLog ---> exec init docker yum repo and install docker-ce......\033[0m"
    echo " "
    yum install -y yum-utils device-mapper-persistent-data lvm2 wget >& /dev/null && \
    yum-config-manager --add-repo https://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo >& /dev/null && \
    sed -i 's+download.docker.com+mirrors.aliyun.com/docker-ce+' /etc/yum.repos.d/docker-ce.repo && \
    yum makecache fast >& /dev/null && \
    yum -y install docker-ce >& /dev/null || yum -y install docker-ce >& /dev/null || echo -e "\033[31mError ---> 01 yum deployment failure due to configuration or network reasons.\033[0m"
}

function update_docker_repo02(){
    echo " "
    echo -e "\033[32mLog ---> exec init docker yum repo and install docker-ce......\033[0m"
    sed -i "/keepcache=0/i\sslverify=0" /etc/yum.conf && yum clean all \
    yum install -y yum-utils device-mapper-persistent-data lvm2 wget >& /dev/null && \
    wget -O /etc/yum.repos.d/docker-ce.repo https://download.docker.com/linux/centos/docker-ce.repo --no-check-certificate >& /dev/null  && \
    sed -i 's+download.docker.com+mirrors.tuna.tsinghua.edu.cn/docker-ce+' /etc/yum.repos.d/docker-ce.repo && \
    yum makecache fast >& /dev/null && \
    yum -y install docker-ce >& /dev/null || yum -y install docker-ce >& /dev/null || echo -e "\033[31mError ---> 02 yum deployment failure due to configuration or network reasons.\033[0m"
}

function update_docker_repo(){
    update_docker_repo01 || update_docker_repo02
}

function docker_start(){
    echo -e "\033[32mLog ---> exec docker-ce start and enable......\033[0m"
    echo " "
    systemctl start docker && systemctl enable docker >& /dev/null
    check_stage 'docker_start'
}

function config(){
        local docker_hasten_url=$1
        echo -e "\033[32mLog ---> exec init docker config......\033[0m"
        echo " "
cat > /etc/docker/daemon.json << EOF
{
"registry-mirrors": ["${docker_hasten_url}"],
"exec-opts": ["native.cgroupdriver=systemd"]
}
EOF
         systemctl daemon-reload && systemctl restart docker >& /dev/null
         check_stage 'config'
}

function check_docker(){
    local STR=$(systemctl status docker | awk 'NR==3'| awk -F "[()]" '{print $2}')

    rpm -qa|grep "docker-ce" >& /dev/null
    if [ `echo $?` -eq "0" ];then
        echo -e "\033[32mLog ---> docker install success！\033[0m"
    else
        echo -e "\033[31mErroe ---> docker install fail！\033[0m"
        exit 1
    fi

    if [ $STR = running ];then
        echo " "
        echo -e "\033[32mLog ---> docker start success！\033[0m"
    else
        echo -e "\033[31mError ---> docker start fail！\033[0m"
        exit 1
    fi
}

function main(){
    update_docker_repo && sleep 1s
    docker_start && sleep 1s
    config $DOCKER_HASTEN_URL
    check_docker
}
main