基于二进制包一键安装docker脚本

root@ubuntu1804:~# cat install_docker_binary.sh
#!/bin/bash
#
#**********************************************************************************************
#Author:        Raymond
#QQ:            88563128
#Date:          2021-12-07
#FileName:      install_docker_binary.sh
#URL:           raymond.blog.csdn.net
#Description:   install_docker_binary for centos 7/8 & ubuntu 18.04/20.04 & Rocky 8
#Copyright (C): 2021 All rights reserved
#*********************************************************************************************
SRC_DIR=/usr/local/src
COLOR="echo -e \\033[01;31m"
END='\033[0m'
URL='https://mirrors.cloud.tencent.com/docker-ce/linux/static/stable/x86_64/'
DOCKER_FILE=docker-20.10.9.tgz

os(){
    OS_ID=`sed -rn '/^NAME=/s@.*="([[:alpha:]]+).*"$@\1@p' /etc/os-release`
}

check_file (){
    cd ${SRC_DIR}
    rpm -q wget &> /dev/null || yum -y install wget &> /dev/null
    if [ ! -e ${DOCKER_FILE} ];then
        ${COLOR}"缺少${DOCKER_FILE}文件"${END}
        ${COLOR}'开始下载DOCKER二进制安装包'${END}
        wget ${URL}${DOCKER_FILE} || { ${COLOR}"DOCKER二进制安装包下载失败"${END}; exit; } 
    else
        ${COLOR}"相关文件已准备好"${END}
    fi
}

install(){ 
    [ -f /usr/bin/docker ] && { ${COLOR}"DOCKER已存在，安装失败"${END};exit; }
    ${COLOR}"开始安装DOCKER..."${END}
    tar xf ${DOCKER_FILE} 
    mv docker/* /usr/bin/
    cat > /lib/systemd/system/docker.service <<-EOF
[Unit]
Description=Docker Application Container Engine
Documentation=https://docs.docker.com
After=network-online.target firewalld.service
Wants=network-online.target

[Service]
Type=notify
# the default is not to use systemd for cgroups because the delegate issues still
# exists and systemd currently does not support the cgroup feature set required
# for containers run by docker
ExecStart=/usr/bin/dockerd -H unix://var/run/docker.sock
ExecReload=/bin/kill -s HUP \$MAINPID
# Having non-zero Limit*s causes performance problems due to accounting overhead
# in the kernel. We recommend using cgroups to do container-local accounting.
LimitNOFILE=infinity
LimitNPROC=infinity
LimitCORE=infinity
# Uncomment TasksMax if your systemd version supports it.
# Only systemd 226 and above support this version.
#TasksMax=infinity
TimeoutStartSec=0
# set delegate yes so that systemd does not reset the cgroups of docker containers
Delegate=yes
# kill only the docker process, not all processes in the cgroup
KillMode=process
# restart the docker process if it exits prematurely
Restart=on-failure
StartLimitBurst=3
StartLimitInterval=60s

[Install]
WantedBy=multi-user.target
EOF
    mkdir -p /etc/docker
    tee /etc/docker/daemon.json <<-'EOF'
{
    "registry-mirrors": [
        "https://hzw5xiv7.mirror.aliyuncs.com",
        "https://docker.mirrors.ustc.edu.cn",
        "http://f1361db2.m.daocloud.io",
        "https://registry.docker-cn.com",
        "https://dockerhub.azk8s.cn",
        "https://reg-mirror.qiniu.com",
        "https://hub-mirror.c.163.com",
        "https://mirror.ccs.tencentyun.com"
    ]
}
EOF
    systemctl daemon-reload
    systemctl enable --now docker &> /dev/null
    systemctl is-active docker &> /dev/null && ${COLOR}"Docker 服务启动成功"${END} || { ${COLOR}"Docker 启动失败"${END};exit; }
    docker version && ${COLOR}"Docker 安装成功"${END} || ${COLOR}"Docker 安装失败"${END}
}

set_alias(){
    echo 'alias rmi="docker images -qa|xargs docker rmi -f"' >> ~/.bashrc
    echo 'alias rmc="docker ps -qa|xargs docker rm -f"' >> ~/.bashrc
}

set_swap_limit(){
    ${COLOR}'设置Docker的"WARNING: No swap limit support"警告'${END}
    sed -ri '/^GRUB_CMDLINE_LINUX=/s@"$@ swapaccount=1"@' /etc/default/grub
    update-grub &> /dev/null
    ${COLOR}"10秒后，机器会自动重启"${END}
    sleep 10
    reboot
}

main(){
    os
    check_file
    install
    set_alias
    if [ ${OS_ID} == "Ubuntu" ];then
        set_swap_limit
    fi
}

main