[docker]1、二进制安装docker

1、下载docker安装包

linux版本：
3.10.0-693.el7.x86_64

wget https://download.docker.com/linux/static/stable/x86_64/docker-18.06.3-ce.tgz 

2、解压下载好的包

tar xvf docker-18.06.3-ce.tgz 
docker/
docker/docker-containerd
docker/docker-proxy
docker/docker
docker/docker-runc
docker/dockerd
docker/docker-containerd-ctr
docker/docker-containerd-shim
docker/docker-init

3、将命令复制一份到/usr/bin下方便使用

[root@sgcc docker]# ll
总用量 143656
-rwxr-xr-x. 1 fido fido 37598450 2月  20 2019 docker
-rwxr-xr-x. 1 fido fido 26393752 2月  20 2019 docker-containerd
-rwxr-xr-x. 1 fido fido 14725592 2月  20 2019 docker-containerd-ctr
-rwxr-xr-x. 1 fido fido  4173632 2月  20 2019 docker-containerd-shim
-rwxr-xr-x. 1 fido fido 53076360 2月  20 2019 dockerd
-rwxr-xr-x. 1 fido fido   764144 2月  20 2019 docker-init
-rwxr-xr-x. 1 fido fido  2837280 2月  20 2019 docker-proxy
-rwxr-xr-x. 1 fido fido  7518624 2月  20 2019 docker-runc
[root@sgcc docker]# cp ./* /usr/bin/

4、由于是二进制安装，所以systemctl工具不能用，手动配置
/etc/systemd/system/，创建docker.service和docker.socket文件。

vi 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

ExecStart=/usr/bin/dockerd
ExecReload=/bin/kill -s HUP $MAINPID

LimitNOFILE=infinity
LimitNPROC=infinity
LimitCORE=infinity


TimeoutStartSec=0
Delegate=yes
KillMode=process
Restart=on-failure
StartLimitBurst=3
StartLimitInterval=60s

[Install]
WantedBy=multi-user.target

vi docker.socket

[Unit]
Description=Docker Socket for the API
PartOf=docker.service

[Socket]
ListenStream=/var/run/docker.sock
SocketMode=0660
SocketUser=root
SocketGroup=docker

[Install]
WantedBy=sockets.target

5、文件都赋予可执行权限，重启systemctl。

[root@sgcc system]# chmod +x docker*
[root@sgcc system]# systemctl daemon-reload
[root@sgcc system]# systemctl start docker

6、查看docker状态

[root@sgcc system]# sudo systemctl status docker
● docker.service - Docker Application Container Engine
   Loaded: loaded (/etc/systemd/system/docker.service; disabled; vendor preset: disabled)
   Active: active (running) since 二 2021-05-25 11:29:02 CST; 2h 17min ago
     Docs: https://docs.docker.com
 Main PID: 40549 (dockerd)
   Memory: 33.2M
   CGroup: /system.slice/docker.service
           ├─40549 /usr/bin/dockerd
           └─40561 docker-containerd --config /var/run/docker/containerd/containerd.toml

7、配置国内镜像（国外地址容易拉取失败）

[root@sgcc system]# vi /etc/docker/daemon.json 
#添加
{
	"registry-mirrors": [
		"https://hub-mirror.c.163.com",	"https://registry.docker-cn.com"
		]
	}
[root@sgcc system]# systemctl daemon-reload 
[root@sgcc system]# systemctl restart docker