503服务暂时不可用gitlab docker和nginx-proxy docker

Question

Description:

I've set up the nginx-proxy container which works really great with one of my two docker containers. Which is just a mini go web server on dev.MY_IP_ADDRESS.com .

I've set it up for my gitlab docker container as well which runs on MY_IP_ADDRESS.com:10080 but doesn't seem to work with gitlab.MY_IP_ADDRESS.com

I've done the same configurations as with my web server, by setting by adding an environment variable:

gitlab:
  #other configs here
  environment:
   - VIRTUAL_HOST=gitlab.MY_IP_ADDERSS.com
   #more configs here

The only difference is that I set up my go server and nginx-proxy server in the same docker-compose.yml and the gitlab one uses a different docker-compose.yml file. Unsure if this has anything to do with it.

I've attempted to docker-compose up each file in a different orders to see if that was an issue.

Error:

This is what I get when I go on gitlab.MY_IP_ADDRESS.com:

503 Service Temporarily Unavailable

nginx/1.11.8

Question:

Why isn't the reverse proxy for gitlab.MY_IP_ADDERSS.com working for gitlab? Is there a conflict somewhere? It works fine on MY_IP_ADDRESS.com:10080

If any logs are needed or any more information let me know. Thanks.

Answer 1

I completely forgot about this question, I actually found a solution which worked for me:

The problem is that your docker-gen is not able to find your GitLab and therefore does not generate the Nginx configuration for gitlab.MY_IP_ADDERSS.com .

To solve this you have three options:

1.) If you are using the solution with separate containers and launch the docker-gen container with the -only-exposed flag this might prevent it from finding GitLab. This was the issue in my case which is why I am mentioning it.

2.) In your case it will probably be because your GitLab container and your Nginx container do not share a common Docker network. Create one like docker create network nginx-proxy and add all your containers to it.

3.) Another solution proposed in this issue is to add a line network_mode: bridge to your GitLab container. I did not test this myself.