Can't access docker container exposed port

15,001

I had to bind to 0.0.0.0 when running rails server. So I used rails server -b 0.0.0.0 as explained in the answer here. https://stackoverflow.com/questions/34246254/cant-access-docker-container

Share:
15,001

Related videos on Youtube

monty_lennie
Author by

monty_lennie

Full Stack Engineer

Updated on September 18, 2022

Comments

  • monty_lennie
    monty_lennie over 1 year

    I am running a rails app inside of a docker container but trying to reach it from a browser the browser shows ERR_CONNECTION_REFUSED . when running docker ps I get

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

    then when running docker inspect rails I see the gateway is "Gateway": "172.17.0.1"

    when I try and ping 172.17.0.1 it works but if I ping 172.17.0.1:3000 it doesn't work.

    when I try nmap -p 3000 172.17.0.1 I get

    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
    

    running sudo netstat -tulpn I get the following.

    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   
    
    • Fabby
      Fabby over 8 years
      Welcome to Ask Ubuntu! ;-) What happens if you simply type localhost:3000 in your browser? If nothing, are you running a firewall???