Docker – Cant access docker port from outside

So i created a new EC2 Instance and installed docker on it.

I deployed code from ( ) and followed install instructions.

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  • Install was successfull and i started the server:

    [ec2-user@ip-172-30-0-127 cosr-front]$ make docker_devserver
    docker run -e DOCKER_HOST --rm -v "/home/ec2-user/cosr-front:/go/src/" -w /go/src/ -p 9700:9700 -i -t commonsearch/local-front make devserver
    mkdir -p build
    go build -o build/cosr-front.bin ./server
    GODEBUG=gctrace=1 COSR_DEBUG=1 ./build/cosr-front.bin
    2016/05/28 16:32:38 Using Docker host IP:
    2016/05/28 16:32:38 Server listening on - You should open in your browser!

    Well, now when i want to access it from outside, i cant! Not even curl the local server.

    When i run docker ps it gives me correct port forwarding:

    [ec2-user@ip-172-30-0-127 ~]$ docker ps
    CONTAINER ID        IMAGE                                       COMMAND                  CREATED             STATUS              PORTS                                              NAMES
    1a9f77e1eeb1        commonsearch/local-front                    "make devserver"         4 minutes ago       Up 4 minutes>9700/tcp                             stoic_hopper
    9ff00fe3e70d        commonsearch/local-elasticsearch-devindex   "/docker-entrypoint.s"   4 minutes ago       Up 4 minutes>9200/tcp,>9300/tcp   kickass_wilson

    These are my docker images:

    REPOSITORY                                  TAG                 IMAGE ID            CREATED             VIRTUAL SIZE
    <none>                                      <none>              3e205118cd3f        17 minutes ago      853.3 MB
    <none>                                      <none>              1d233da1fa59        2 hours ago         955.7 MB
    debian                                      jessie              ce58426c830c        4 days ago          125.1 MB
    commonsearch/local-front                    latest              30de7ab48d43        7 weeks ago         1.024 GB
    commonsearch/local-elasticsearch-devindex   latest              b1156ada5a24        11 weeks ago        383.2 MB
    commonsearch/local-elasticsearch            latest              808e72f49b4a        3 months ago        355.2 MB

    I have tryed disabling ipv6 and all kind of nonsense google offered me, but without success.

    Any ideas ?


    Also, if i enter the docker container for frontend( using docker exec ), then I CAN PING AND CULR the frontend.

    But i cant from the outside( nor ssh, not from my home pc using browser ).

    Also my docker version:

     Version:      1.9.1
     API version:  1.21
     Go version:   go1.4.2
     Git commit:   a34a1d5/1.9.1
     OS/Arch:      linux/amd64
     Version:      1.9.1
     API version:  1.21
     Go version:   go1.4.2
     Git commit:   a34a1d5/1.9.1
     OS/Arch:      linux/amd64

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  • 2 Solutions collect form web for “Docker – Cant access docker port from outside”

    I made a issue at github as swell and one guy saved the day.

    Here’s he’s response:

    Server listening on
    Your application is listening on localhost. localhost is scoped to the container itself. Thus to be able to connect to it, you would have to be inside the container.
    To fix, you need to get your application to listen on instead. is the loopback address for the local (EC2) instance. I just recreated your problem following the same instructions and setting up the server in a docker container on an EC2 instance.

    If you open another ssh session to your EC2 instance you CAN curl the loopback address, which just spits out the HTML shown below.

    <!DOCTYPE html><html lang="en"><head><title>
          Common Search
        </title><meta content="/apple-touch-icon-precomposed.png" itemprop="image"><link href="/favicon.ico" rel="shortcut icon"><!-- CSS: This will be replaced in templates.go:preprocessTemplate() by the inline, compiled CSS
                  if the file build/static/css/index.css exists --><link rel="stylesheet" href="/css/global.css"/><link rel="stylesheet" href="/css/header.css"/><link rel="stylesheet" href="/css/footer.css"/><link rel="stylesheet" href="/css/hits.css"/><link rel="stylesheet" href="/css/responsive.css"/><!-- ENDCSS --><meta name="viewport" content="width=device-width, initial-scale=1"></head><body  class="full"><header id="h"><div class="about"><a href="" tabindex="1">About</a></div><form id="f" action="/" method="GET" data-init="{&#34;q&#34;:&#34;&#34;,&#34;p&#34;:1,&#34;g&#34;:&#34;&#34;}"><a href="/" id="logo" tabindex="2">Common Search</a><div id="w"><div id="qw"><input id="q" name="q" type="text" size="60" value="" autofocus tabindex="3"/></div><span id="g"><select name="g" tabindex="4"><option  value="ar">AR</option><option  value="de">DE</option><option selected value="en">EN</option><option  value="es">ES</option><option  value="fr">FR</option><option  value="it">IT</option><option  value="ja">JA</option><option  value="ko">KO</option><option  value="nl">NL</option><option  value="pl">PL</option><option  value="pt">PT</option><option  value="ru">RU</option><option  value="vi">VI</option><option  value="zh">ZH</option><option  value="all">ALL</option></select></span><input id="s" type="submit" value="&#x1f50d;" tabindex="5"/></div></form></header><div id="hits"></div><div id="dbg"></div><div id="pager" data-page="1"></div><script src="/js/index.js" type="text/javascript"></script></body></html>
    Docker will be the best open platform for developers and sysadmins to build, ship, and run distributed applications.