一、安装epel源

yum install epel-release -y

二、添加docker源

yum install -y yum-utils
yum-config-manager --add-repo http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo

三、查看当前docer安装版本号

yum list docker-ce --show-duplicates

四、安装社区版docker

yum -y install docker-ce

五、创建配置docker的配置文件

docker]# vi /etc/docker/daemon.json 
{
  "graph": "/data/docker",
  "storage-driver": "overlay2",
  "insecure-registries": ["registry.access.redhat.com","quay.io"],
  "registry-mirrors": ["https://q2gr04ke.mirror.aliyuncs.com"],
  "bip": "172.7.5.1/24",
  "exec-opts": ["native.cgroupdriver=systemd"],
  "live-restore": true
}

graph: docker 工作目录
sotrage-dirver: docer存储驱动模式
insecure-registries:容器仓库
registry-mirrors:仓库加速镜像
bip:容器运行的网络
exec-opts:容器的启动方式
live-restore:当容器引擎中断时，所启动的容器继续运行

六、启动&关闭&重启docker

启动: systemctl start docker
关闭: systemctl stop docker
重启: systemctl restart docker

七、查看当前容器信息

[root@docker docker]# docker info
Client:
 Debug Mode: false

Server:
 Containers: 0
  Running: 0
  Paused: 0
  Stopped: 0
 Images: 0
 Server Version: 19.03.5
 Storage Driver: overlay2
  Backing Filesystem: extfs
  Supports d_type: true
  Native Overlay Diff: true
 Logging Driver: json-file
 Cgroup Driver: systemd
 Plugins:
  Volume: local
  Network: bridge host ipvlan macvlan null overlay
  Log: awslogs fluentd gcplogs gelf journald json-file local logentries splunk syslog
 Swarm: inactive
 Runtimes: runc
 Default Runtime: runc
 Init Binary: docker-init
 containerd version: b34a5c8af56e510852c35414db4c1f4fa6172339
 runc version: 3e425f80a8c931f88e6d94a8c831b9d5aa481657
 init version: fec3683
 Security Options:
  seccomp
   Profile: default
 Kernel Version: 3.10.0-693.el7.x86_64
 Operating System: CentOS Linux 7 (Core)
 OSType: linux
 Architecture: x86_64
 CPUs: 1
 Total Memory: 1.797GiB
 Name: docker
 ID: 2Q52:PFL3:RWZM:T77G:LAAB:NHX5:FWAL:4NDC:N6Q4:SNBU:BKRX:YWPW
 Docker Root Dir: /app/docker
 Debug Mode: false
 Registry: https://index.docker.io/v1/
 Labels:
 Experimental: false
 Insecure Registries:
  quay.io
  registry.access.redhat.com
  127.0.0.0/8
 Registry Mirrors:
  https://q2gr04ke.mirror.aliyuncs.com/
 Live Restore Enabled: true

WARNING: bridge-nf-call-iptables is disabled
WARNING: bridge-nf-call-ip6tables is disabled