安装docker2020-07-20

1 安装docker

1 方式一（rpm）：

下载需要安装版本的docker的安装包，会存在相应的依赖包，需要确定，

下载地址：https://download.docker.com/linux/centos/7/x86_64/stable/Packages/

2 下载二进制文件安装（tgz）

下载地址：https://download.docker.com/linux/static/stable/x86_64/

2.1 解压文件

tar -xvf docker-19.03.5-ce.tgz

2.2 将解压出来的docker文件内容移动到/usr/bin/ 目录下

cp docker/* /usr/bin/

2.3 将docker注册为service

vim /etc/systemd/system/docker.service

[Unit]

Description=Docker Application ContainerEngine

Documentation=https://docs.docker.com

After=network-online.targetfirewalld.service

Wants=network-online.target

[Service]

Type=notify

# the default is not to use systemd forcgroups because the delegate issues still

# exists and systemd currently does notsupport 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 causesperformance problems due to accounting overhead

# in the kernel. We recommend using cgroupsto do container-local accounting.

LimitNOFILE=infinity

LimitNPROC=infinity

LimitCORE=infinity

# Uncomment TasksMax if your systemdversion supports it.

# Only systemd 226 and above support thisversion.

#TasksMax=infinity

TimeoutStartSec=0

# set delegate yes so that systemd does notreset the cgroups of docker containers

Delegate=yes

# kill only the docker process, not allprocesses in the cgroup

KillMode=process

# restart the docker process if it exitsprematurely

Restart=on-failure

StartLimitBurst=3

StartLimitInterval=60s

[Install]

WantedBy=multi-user.target

2.4 启动

添加文件权限并启动

chmod +x /etc/systemd/system/docker.service

systemctl daemon-reload

systemctl restart docker

systemctl enable docker

docker –version

2 安装docker-compose

下载需要版本的docker-compose

下载地址：https://github.com/docker/compose/releases

将下载的版本移动到/usr/local/bin/目录下

添加可执行权限

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