[系统运维]linux离线Docker与docker-compose安装，并配置docker镜像保存地址

Docker安装

1. 下载 docker 国内镜像链接（博主下载的是docker-18.06.3-ce.tgz版本）

2. 解压下载的docker包
   tar zxvf docker-18.06.3-ce.tgz

3. 复制解压出来的docker到/usr/bin/目录下
   sudo cp docker/* /usr/bin/

4. 在以下目录下新建一个文件 docker.service
   vim /etc/systemd/system/docker.service

文件内容如下

[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

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

如果需要修改镜像默认保存位置，将上面代码中的 ExecStart=/usr/bin/dockerd 改为 ExecStart=/usr/bin/dockerd --graph= /data/docker即修改了新的镜像保存位置为 /data/docker。（如果想查看是否修改成功了，可以重新启动docker后用docker info命令查看）
5. systemctl daemon-reload 加载文件 使其生效
6. 运行 systemctl restart docker 重启动docker
7. systemctl enable docker 开机自启docker命令

docker-compose安装

其安装非常简单，下一个对应版本的docker-compose文件，移动到对应位置，然后修改其名字为docker-compose，增加执行权限之后就可以直接使用docker-compose了
具体操作步骤

• 直接在线安装

curl -L https://get.daocloud.io/docker/compose/releases/download/1.29.2/docker-compose-`uname -s`-`uname -m` > /usr/local/bin/docker-compose

chmod +x /usr/local/bin/docker-compose

• 离线安装

1. 从git上下载对应版本的docker-compose文件链接
2. 移动位置并修改名字
   mv docker-compose-Linux-x86_64 /usr/local/bin/docker-compose
3. 修改权限
   chmod +x /usr/local/bin/docker-compose