ruby-on-rails – 无法访问docker容器

我正在Docker容器中运行rails应用程序但是试图从浏览器到达它,浏览器显示ERR_CONNECTION_REFUSED.当运行docker ps我得到

a086ed5a6c4a        rails                       "bash"                   3 days ago          Up About an hour    0.0.0.0:3000->3000/tcp                                                            rails

然后当运行docker检查rails时,我看到网关是“Gateway”:“172.17.0.1”

当我尝试ping 172.17.0.1它可以工作,但如果我ping 172.17.0.1:3000它不起作用.

当我尝试nmap -p 3000 172.17.0.1我得到

Starting Nmap 6.40 ( http://nmap.org ) at 2015-12-12 15:27 PST
Nmap scan report for 172.17.0.1
Host is up (0.000047s latency).
PORT     STATE  SERVICE
3000/tcp closed ppp

运行sudo netstat -tulpn我得到以下内容.

Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address           Foreign Address         State       PID/Program name
tcp        0      0 127.0.0.1:5940          0.0.0.0:*               LISTEN      1900/teamviewerd
tcp        0      0 127.0.1.1:53            0.0.0.0:*               LISTEN      5965/dnsmasq    
tcp        0      0 127.0.0.1:53            0.0.0.0:*               LISTEN      1195/dnsmasq    
tcp        0      0 127.0.0.1:631           0.0.0.0:*               LISTEN      2910/cupsd      
tcp6       0      0 :::5858                 :::*                    LISTEN      4693/docker-proxy
tcp6       0      0 :::4200                 :::*                    LISTEN      4629/docker-proxy
tcp6       0      0 :::6379                 :::*                    LISTEN      4423/docker-proxy
tcp6       0      0 :::8080                 :::*                    LISTEN      4665/docker-proxy
tcp6       0      0 ::1:53                  :::*                    LISTEN      1195/dnsmasq    
tcp6       0      0 ::1:631                 :::*                    LISTEN      2910/cupsd      
tcp6       0      0 :::5432                 :::*                    LISTEN      4540/docker-proxy
tcp6       0      0 :::3000                 :::*                    LISTEN      3099/docker-proxy
tcp6       0      0 :::3001                 :::*                    LISTEN      4700/docker-proxy
tcp6       0      0 :::3002                 :::*                    LISTEN      6521/docker-proxy
tcp6       0      0 :::7357                 :::*                    LISTEN      4610/docker-proxy
udp        0      0 0.0.0.0:27824           0.0.0.0:*                           6091/dhclient   
udp        0      0 0.0.0.0:53717           0.0.0.0:*                           569/avahi-daemon: r
udp        0      0 0.0.0.0:5353            0.0.0.0:*                           3206/chrome     
udp        0      0 0.0.0.0:5353            0.0.0.0:*                           569/avahi-daemon: r
udp        0      0 0.0.0.0:5699            0.0.0.0:*                           5961/dhclient   
udp        0      0 127.0.1.1:53            0.0.0.0:*                           5965/dnsmasq    
udp        0      0 127.0.0.1:53            0.0.0.0:*                           1195/dnsmasq    
udp        0      0 0.0.0.0:68              0.0.0.0:*                           6091/dhclient   
udp        0      0 0.0.0.0:68              0.0.0.0:*                           5961/dhclient   
udp        0      0 0.0.0.0:631             0.0.0.0:*                           1336/cups-browsed
udp6       0      0 :::53862                :::*                                5961/dhclient   
udp6       0      0 :::5353                 :::*                                569/avahi-daemon: r
udp6       0      0 ::1:53                  :::*                                1195/dnsmasq    
udp6       0      0 :::59093                :::*                                569/avahi-daemon: r
udp6       0      0 :::26992                :::*                                6091/dhclient   
最佳答案
尝试将Rails服务器绑定到0.0.0.0,告诉它绑定到Docker主机上的所有IP地址.它默认绑定到localhost,最近更改为as explained in this answer.这是通过rails服务器的-b参数完成的:

docker run -p 3000:3000 -d rails server -p 3000 -b 0.0.0.0

转载注明原文:ruby-on-rails – 无法访问docker容器 - 代码日志