No. I can confirm that both containers can access each others. because I 
already exposed port 9000 and 12900

# in nginx container
root@nginx:/# telnet 172.17.0.1 9000
Trying 172.17.0.1...
Connected to 172.17.0.1.
Escape character is '^]'.
^]
telnet> quit
Connection closed.
root@nginx:/# telnet 172.17.0.1 12900
Trying 172.17.0.1...
Connected to 172.17.0.1.
Escape character is '^]'.
^]
telnet> quit
Connection closed.
root@nginx:/# 

Jirayut


On Thursday, May 26, 2016 at 5:49:53 PM UTC+7, Martin René Mortensen wrote:
>
> 2 separate containers dont have access to eachothers resrouces unless they 
> are linked. This would explain the connection refused.
>
> Read all about it: https://docs.docker.com/compose/link-env-deprecated/ 
> (this is the old method, for pre docker 1.10)
>
> Brgds.
> Martin
>
> On Thursday, 26 May 2016 11:03:37 UTC+2, Jirayut Nimsaeng wrote:
>>
>> Nginx is a completely separate container from the graylog. So no linked 
>> container and nginx need to access to graylog with the graylog exposed 
>> ports 9000 and 12900.
>>
>> Jirayut
>>
>> On Thursday, May 26, 2016 at 3:58:00 PM UTC+7, Martin René Mortensen 
>> wrote:
>>>
>>> I think your rest and web listen uri has to have port number configured. 
>>> Thats also the problem, there is no listener on the port you proxy to.
>>>
>>> Is the nginx in a separate linked docker container? on the docker host? 
>>> in the graylog container? You have to expose the ports correctly if the 
>>> nginx is not in the same docker container as the graylog server.
>>>
>>> Brgds.
>>> Martin
>>>
>>> On Thursday, 26 May 2016 09:13:32 UTC+2, Jirayut Nimsaeng wrote:
>>>>
>>>> I'm using graylog2/server:2.0.1-2 docker image from here 
>>>> https://hub.docker.com/r/graylog2/server/. So I'm going to do 
>>>> everything behind the nginx reverse proxy with https to secure 
>>>> communication both web interface and rest api. This is my nginx 
>>>> configuration
>>>>
>>>> server {
>>>>   listen 80;
>>>>   server_name graylog.example.com;
>>>>   ## redirect http to https ##
>>>>   rewrite ^ https://graylog.example.com$request_uri? permanent;
>>>> }
>>>>
>>>> server {
>>>>
>>>>   listen 443 ssl;
>>>>
>>>>   ssl on;
>>>>   ssl_certificate_key /etc/nginx/certs/graylog.example.com.key;
>>>>   ssl_certificate /etc/nginx/certs/graylog.example.com.crt;
>>>>
>>>>   ssl_protocols TLSv1 TLSv1.1 TLSv1.2;
>>>>   ssl_prefer_server_ciphers on;
>>>>   ssl_ciphers "EECDH+AESGCM:EDH+AESGCM:AES256+EECDH:AES256+EDH";
>>>>   ssl_ecdh_curve secp384r1; # Requires nginx >= 1.1.0
>>>>   ssl_session_cache shared:SSL:10m;
>>>>   ssl_session_tickets off; # Requires nginx >= 1.5.9
>>>>   ssl_stapling on; # Requires nginx >= 1.3.7
>>>>   ssl_stapling_verify on; # Requires nginx => 1.3.7
>>>>   resolver 8.8.4.4 8.8.8.8 valid=300s;
>>>>   resolver_timeout 5s;
>>>>   #add_header Strict-Transport-Security "max-age=63072000; 
>>>> includeSubdomains; preload";
>>>>   #add_header X-Frame-Options DENY;
>>>>   #add_header X-Content-Type-Options nosniff;
>>>>
>>>>   ssl_dhparam /etc/nginx/certs/dhparam.pem;
>>>>
>>>>   chunked_transfer_encoding on;
>>>>
>>>>   server_name graylog.example.com;
>>>>   server_tokens off; ## Don't show the nginx version number, a 
>>>> security best practice
>>>>
>>>>   ## Increase this if you want to upload large attachments
>>>>   client_max_body_size 0;
>>>>
>>>>   ## Individual nginx logs for this vhost
>>>>   access_log /var/log/nginx/graylog.example.com_access.log;
>>>>   error_log /var/log/nginx/graylog.example.com_error.log;
>>>>
>>>>   location / {
>>>>     include proxy_params;
>>>>     proxy_pass http://graylog_web_backend;
>>>>   }
>>>>   location /api {
>>>>     rewrite ^/api(.*)$ $1 break;
>>>>     include proxy_params;
>>>>     proxy_pass http://graylog_api_backend;
>>>>   }
>>>> }
>>>>
>>>> upstream graylog_web_backend {
>>>>     server 172.17.0.1:9000;
>>>> }
>>>> upstream graylog_api_backend {
>>>>     server 172.17.0.1:12900;
>>>> }
>>>>
>>>> This is environment that I used to config graylog container
>>>>
>>>> GRAYLOG_PASSWORD_SECRET: CHANGEME
>>>> GRAYLOG_REST_TRANSPORT_URI: https://graylog.example.com/
>>>> GRAYLOG_WEB_ENDPOINT_URI: https://graylog.example.com/api/
>>>>
>>>> I can access to web interface and logged in to graylog. But if I access 
>>>> to System / Overview page. I got this message log from docker logs -f 
>>>> graylog command
>>>>
>>>> 2016-05-26 06:00:51,111 WARN : org.graylog2.shared.rest.resources.
>>>> ProxiedResource - Unable to call https://
>>>> graylog.example.com:12900/system/metrics/multiple on node 
>>>> <e5b8ba1e-94e6-4af1-93c5-5cafb8a44800>, caught exception: Read timed out 
>>>> (class java.net.SocketTimeoutException)
>>>> 2016-05-26 06:00:52,934 WARN : org.graylog2.shared.rest.resources.
>>>> ProxiedResource - Unable to call https://
>>>> graylog.example.com:12900/system/jobs on node 
>>>> <e5b8ba1e-94e6-4af1-93c5-5cafb8a44800>, caught exception: Read timed out 
>>>> (class java.net.SocketTimeoutException)
>>>> 2016-05-26 06:00:52,975 WARN : org.graylog2.shared.rest.resources.
>>>> ProxiedResource - Unable to call https://
>>>> graylog.example.com:12900/system/metrics/multiple on node 
>>>> <e5b8ba1e-94e6-4af1-93c5-5cafb8a44800>, caught exception: Read timed out 
>>>> (class java.net.SocketTimeoutException)
>>>> 2016-05-26 06:00:54,897 WARN : org.graylog2.shared.rest.resources.
>>>> ProxiedResource - Unable to call https://
>>>> graylog.example.com:12900/system/metrics/multiple on node 
>>>> <e5b8ba1e-94e6-4af1-93c5-5cafb8a44800>, caught exception: Read timed out 
>>>> (class java.net.SocketTimeoutException)
>>>> 2016-05-26 06:00:56,912 WARN : org.graylog2.shared.rest.resources.
>>>> ProxiedResource - Unable to call https://
>>>> graylog.example.com:12900/system/metrics/multiple on node 
>>>> <e5b8ba1e-94e6-4af1-93c5-5cafb8a44800>, caught exception: Read timed out 
>>>> (class java.net.SocketTimeoutException)
>>>>
>>>> So I assume that the system still think that rest api still at port 
>>>> 12900. Anyone try this before? any work around? Or any proper way to do 
>>>> this?
>>>>
>>>

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