在自己電腦的虛擬機器中安裝了gitlab，裝完以後請求登陸卻報503錯誤，以前安裝nagios和nginx也是出現類似情況都沒有解決，請求大神幫助。
具體錯誤提示：
The server is temporarily unable to service your request due to maintenance downtime or capacity problems. Please try again later.
Apache/2.2.15 (CentOS) Server at 192.168.1.212 Port 80
