因為平常使用的都是centos7系統，所以只記錄centos7系統下docker的安裝啟動，其它系統之后再更新吧。

安裝

直接使用yum安裝即可。

$ sudo yum install docker -y

之后設置開機自啟動并啟動服務

[vitue@realtiger ~]$ systemctl enable docker
==== AUTHENTICATING FOR org.freedesktop.systemd1.manage-unit-files ===
Authentication is required to manage system service or unit files.
Authenticating as: vitue
Password: 
==== AUTHENTICATION COMPLETE ===
==== AUTHENTICATING FOR org.freedesktop.systemd1.reload-daemon ===
Authentication is required to reload the systemd state.
Authenticating as: vitue
Password: 
==== AUTHENTICATION COMPLETE ===
[vitue@realtiger ~]$ systemctl restart docker                                                                      
==== AUTHENTICATING FOR org.freedesktop.systemd1.manage-units ===
Authentication is required to manage system services or units.
Authenticating as: vitue
Password: 
==== AUTHENTICATION COMPLETE ===
[vitue@realtiger ~]$