CentOS 7 下安装docker

一、移除系统中的docker相关包

yum remove docker \
                  docker-client \
                  docker-client-latest \
                  docker-common \
                  docker-latest \
                  docker-latest-logrotate \
                  docker-logrotate \
                  docker-engine

二、配置yum源

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

三、安装docker

yum install -y docker-ce docker-ce-cli containerd.io   #也可根据需要安装对应的版本

四、启动docker并设置为开机启动

systemctl enable docker --now

五、配置阿里云加速

mkdir -p /etc/docker

tee /etc/docker/daemon.json <<-'EOF'
{
  "registry-mirrors": ["https://sx15mtuf.mirror.aliyuncs.com"]
}
EOF

systemctl daemon-reload
systemctl restart docker

六、查看版本及信息

[root@AH296 ~]# docker --version
Docker version 20.10.21, build baeda1f
[root@AH296 ~]# docker info
Client:
 Context:    default
 Debug Mode: false
 Plugins:
  app: Docker App (Docker Inc., v0.9.1-beta3)
  buildx: Docker Buildx (Docker Inc., v0.9.1-docker)
  scan: Docker Scan (Docker Inc., v0.21.0)

Server:
 Containers: 2
  Running: 1
  Paused: 0
  Stopped: 1
 Images: 3
 Server Version: 20.10.21
 Storage Driver: overlay2
  Backing Filesystem: extfs
  Supports d_type: true
  Native Overlay Diff: true
  userxattr: false
 Logging Driver: json-file
 Cgroup Driver: systemd
 Cgroup Version: 1
 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: io.containerd.runc.v2 io.containerd.runtime.v1.linux runc
 Default Runtime: runc
 Init Binary: docker-init
 containerd version: a05d175400b1145e5e6a735a6710579d181e7fb0
 runc version: v1.1.4-0-g5fd4c4d
 init version: de40ad0
 Security Options:
  seccomp
   Profile: default
 Kernel Version: 3.10.0-1127.19.1.el7.x86_64
 Operating System: CentOS Linux 7 (Core)
 OSType: linux
 Architecture: x86_64
 CPUs: 1
 Total Memory: 1.795GiB
 Name: AH296
 ID: 4V7J:GAGP:SH6Z:KDVY:S6FN:PQQM:YGTN:XQ62:YBKQ:KZO3:TXUJ:Z72R
 Docker Root Dir: /var/lib/docker
 Debug Mode: false
 Registry: https://index.docker.io/v1/
 Labels:
 Experimental: false
 Insecure Registries:
  127.0.0.0/8
 Registry Mirrors:
  https://82m9ar63.mirror.aliyuncs.com/
 Live Restore Enabled: false

[root@AH296 ~]# 

七、测试