docker安装

1. 配置yum源

[root@node2 ~]# yum-config-manager --add-repo http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo
Loaded plugins: fastestmirror
adding repo from: http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo
grabbing file http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo to /etc/yum.repos.d/docker-ce.repo
repo saved to /etc/yum.repos.d/docker-ce.repo
[root@node2 ~]#

2. 安装docker最新版本
   [root@node2 ~]# yum install docker-ce
3. 设置docker开机启动

[root@node2 ~]# systemctl enable docker
Created symlink from /etc/systemd/system/multi-user.target.wants/docker.service to /usr/lib/systemd/system/docker.service.
[root@node2 ~]#

4. 启动docker
   [root@node2 ~]# systemctl start docker
5. 可以输入docker info判断是否安装成功

[root@node2 ~]# docker info
Containers: 0
Running: 0
Paused: 0
Stopped: 0
Images: 0
Server Version: 18.09.3
Storage Driver: overlay2
Backing Filesystem: extfs
Supports d_type: true
Native Overlay Diff: true
Logging Driver: json-file
Cgroup Driver: cgroupfs
Plugins:
Volume: local
Network: bridge host 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: e6b3f5632f50dbc4e9cb6288d911bf4f5e95b18e
runc version: 6635b4f0c6af3810594d2770f662f34ddc15b40d
init version: fec3683
Security Options:
seccomp
  Profile: default
Kernel Version: 3.10.0-957.1.3.el7.x86_64
Operating System: CentOS Linux 7 (Core)
OSType: linux
Architecture: x86_64
CPUs: 1
Total Memory: 991.2MiB
Name: node2
ID: VYPK:5GQM:E2PZ:GVPN:3CCK:NYQA:I5XS:OHSH:D6XM:CQW3:2CB2:HDKY
Docker Root Dir: /var/lib/docker
Debug Mode (client): false
Debug Mode (server): false
Registry: https://index.docker.io/v1/
Labels:
Experimental: false
Insecure Registries:
127.0.0.0/8
Live Restore Enabled: false
Product License: Community Engine

6. 配置国内镜像加速
   [root@node2 ~]# vi /etc/docker/daemon.json

{
"registry-mirrors": [
"https://registry.docker-cn.com"
]
}

7. 重新加载配置并启动服务

[root@node2 ~]# systemctl daemon-reload
[root@node2 ~]# systemctl restart docker

8. 可以通过docker info查看到刚刚配置的镜像已经出现：

[root@node2 ~]# docker info
Containers: 0
Running: 0
Paused: 0
Stopped: 0
Images: 0
Server Version: 18.09.3
Storage Driver: overlay2
Backing Filesystem: extfs
Supports d_type: true
Native Overlay Diff: true
Logging Driver: json-file
Cgroup Driver: cgroupfs
Plugins:
Volume: local
Network: bridge host 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: e6b3f5632f50dbc4e9cb6288d911bf4f5e95b18e
runc version: 6635b4f0c6af3810594d2770f662f34ddc15b40d
init version: fec3683
Security Options:
seccomp
  Profile: default
Kernel Version: 3.10.0-957.1.3.el7.x86_64
Operating System: CentOS Linux 7 (Core)
OSType: linux
Architecture: x86_64
CPUs: 1
Total Memory: 991.2MiB
Name: node2
ID: VYPK:5GQM:E2PZ:GVPN:3CCK:NYQA:I5XS:OHSH:D6XM:CQW3:2CB2:HDKY
Docker Root Dir: /var/lib/docker
Debug Mode (client): false
Debug Mode (server): false
Registry: https://index.docker.io/v1/
Labels:
Experimental: false
Insecure Registries:
127.0.0.0/8
Registry Mirrors:
https://registry.docker-cn.com/
Live Restore Enabled: false
Product License: Community Engine

[root@node2 ~]#