1.部署环境：centos7.5

2.关闭selinux：设置/etc/selinux/config

3.docker下载：​​https://download.docker.com/linux/static/stable/x86_64/​​

选择docker-19.03.5.taz

4.安装：

（1）解压及拷贝

tar zxvf docker-19.03.5.tgz

cd docker

\cp -rf * /usr/bin/ #docker目录是二进制文件 全部拷贝到/usr/bin

（2）配置docker开机启动

touch /etc/systemd/system/docker.service

touch /etc/systemd/system/docker.socket

chmod 777 /etc/systemd/system/docker.service

chmod 777 /etc/systemd/system/docker.socket

docker.service:

vim docker.service

 

[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

docker.socket:

[Unit]

 

Description=Docker Socket for the API

 

PartOf=docker.service

 

[Socket]

 

# If /var/run is not implemented as a symlink to /run, you may need to

 

# specify ListenStream=/var/run/docker.sock instead.

 

ListenStream=/run/docker.sock

 

SocketMode=0660

 

SocketUser=root

 

SocketGroup=docker

 

[Install]

 

WantedBy=sockets.target

保存上述两个文件后执行：

systemctl enable docker

systemctl start docker