gitlab docker registry with external nginx and omn

Question

I already run a gitlab server inside a docker container with an external nginx server inside an other docker container, so the gitlab nginx server is deactivated. Now I want to use the docker registry included in the gitlab server.

I try to get the information from the administration manual: https://docs.gitlab.com/ee/administration/container_registry.html

and use a fitted nginx config from linked file: https://gitlab.com/gitlab-org/gitlab-ce/blob/master/lib/support/nginx/registry-ssl

to the gitlab.rb I added:

... 
registry_external_url 'url'
registry_nginx['enable'] = false
registry['enable'] = true
...

But if I try to login (docker login url), I only get an 502 Bad Gateway error. I also tried some other configuration with ombinations, but gotting always the same error. Do anybody get it work? Need I to add more settings to the omnibus file or is it still not possible to use the gitlab internal docker registry with omnibus and external nginx?

Answer 1

ok i got it work.

## Lines starting with two hashes (##) are comments with information.
## Lines starting with one hash (#) are configuration parameters that can be uncommented.
##
###################################
##         configuration         ##
###################################

upstream docker-registry {
 server <ip_of_gitlab_docker_container>:<port_of_gitlab_container>;
}

## Redirects all HTTP traffic to the HTTPS host
server {
  listen *:80;
  server_name  sub.domain.tld;
  server_tokens off; ## Don't show the nginx version number, a security best practice
  return 301 https://$http_host:$request_uri;
  access_log  /var/log/nginx/gitlab_registry_access.log;
  error_log   /var/log/nginx/gitlab_registry_error.log;
}


server {
  # If a different port is specified in https://gitlab.com/gitlab-org/gitlab-ce/blob/8-8-stable/config/gitlab.yml.example#L182,
  # it should be declared here as well
  listen *:443 ssl http2;
  server_name  sub.domain.tld;
  server_tokens off; ## Don't show the nginx version number, a security best practice

  client_max_body_size 0;
  chunked_transfer_encoding on;

  ## Strong SSL Security
  ## https://raymii.org/s/tutorials/Strong_SSL_Security_On_nginx.html & https://cipherli.st/
   ssl on;
   ssl_certificate /etc/letsencrypt/live/sub.domain.tld/fullchain.pem;
   ssl_certificate_key /etc/letsencrypt/live/sub.domain.tld/privkey.pem;

  ssl_ciphers 'EECDH+AESGCM:EDH+AESGCM:AES256+EECDH:AES256+EDH';
  ssl_protocols  TLSv1 TLSv1.1 TLSv1.2;
  ssl_prefer_server_ciphers on;
  ssl_session_cache  builtin:1000  shared:SSL:10m;
  ssl_session_timeout  5m;

  access_log  /var/log/nginx/gitlab_registry_access.log;
  error_log   /var/log/nginx/gitlab_registry_error.log;


    location /
{
     # let Nginx know about our auth file
     proxy_pass http://docker-registry;
     proxy_set_header Host $host; # required for docker client's sake
     proxy_set_header X-Real-IP $remote_addr; # pass on real client's IP
     proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
     proxy_set_header X-Forwarded-Proto $scheme;
 }

 location /v2/ {
     # To add basic authentication to v2 use auth_basic setting plus
     # add_header
     add_header 'Docker-Distribution-Api-Version' 'registry/2.0' always;
     proxy_pass http://docker-registry;
     proxy_set_header Host $http_host; # required for docker client's sake
     proxy_set_header X-Real-IP $remote_addr; # pass on real client's IP
     proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
     proxy_set_header X-Forwarded-Proto $scheme;
     proxy_read_timeout 900;
 }

}

Maybe the nginx configuration of Andrioshe also work, but I did some change and mix up with other configurations while trying. I think a configuration file for normal docker-regsitry will also work... will try it in future.

But the more important thing is the gitlab omnibus configuration.

registry_external_url 'https://sub.domain.tld'
registry['registry_http_addr'] = "<ip_of_gitlab_docker_container>:<port_of_gitlab_container>"
registry_nginx['enable'] = false
registry['enable'] = true

It is important to set the 'regsitry_http_addr' to the gitlab docker registry ip and port instead of localhost.

Answer 2

I also had the same problem like you and got it to work with the following:

Nginx:

## Lines starting with two hashes (##) are comments with information.
## Lines starting with one hash (#) are configuration parameters that can be uncommented.
##
###################################
##         configuration         ##
###################################

## Redirects all HTTP traffic to the HTTPS host
server {
  listen *:80;
  server_name  registry.project-oc.de;
  server_tokens off; ## Don't show the nginx version number, a security best practice
  return 301 https://$http_host:$request_uri;
  access_log  /var/log/nginx/gitlab_registry_access.log;
  error_log   /var/log/nginx/gitlab_registry_error.log;
}

server {
  # If a different port is specified in https://gitlab.com/gitlab-org/gitlab-ce/blob/8-8-stable/config/gitlab.yml.example#L182,
  # it should be declared here as well
  listen *:443 ssl http2;
  server_name  registry.project-oc.de;
  server_tokens off; ## Don't show the nginx version number, a security best practice

  client_max_body_size 0;
  chunked_transfer_encoding on;

  ## Strong SSL Security
  ## https://raymii.org/s/tutorials/Strong_SSL_Security_On_nginx.html & https://cipherli.st/
  ssl on;
  ssl_certificate /etc/letsencrypt/live/registry.project-oc.de/fullchain.pem; # managed by Certbot
  ssl_certificate_key /etc/letsencrypt/live/registry.project-oc.de/privkey.pem; # managed by Certbot

  ssl_ciphers 'ECDHE-RSA-AES256-GCM-SHA384:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-RSA-AES256-SHA384:ECDHE-RSA-AES128-SHA256:ECDHE-RSA-AES256-SHA:ECDHE-RSA-AES128-SHA:ECDHE-RSA-DES-CBC3-SHA:AES256-GCM-SHA384:AES128-GCM-SHA256:AES256-SHA256:AES128-SHA256:AES256-SHA:AES128-SHA:DES-CBC3-SHA:!aNULL:!eNULL:!EXPORT:!DES:!MD5:!PSK:!RC4';
  ssl_protocols  TLSv1 TLSv1.1 TLSv1.2;
  ssl_prefer_server_ciphers on;
  ssl_session_cache  builtin:1000  shared:SSL:10m;
  ssl_session_timeout  5m;

  access_log  /var/log/gitlab/nginx/gitlab_registry_access.log;
  error_log   /var/log/gitlab/nginx/gitlab_registry_error.log;

  location / {
    proxy_set_header  Host              $http_host;   # required for docker client's sake
    proxy_set_header  X-Real-IP         $remote_addr; # pass on real client's IP
    proxy_set_header  X-Forwarded-For   $proxy_add_x_forwarded_for;
    proxy_set_header  X-Forwarded-Proto $scheme;
    proxy_read_timeout                  900;

    proxy_pass          http://localhost:5000;
  }
}

gitlab.rb

registry_external_url 'https://registry.project-oc.de'
registry_nginx['listen_port'] = 5000
gitlab_rails['registry_enabled'] = true
registry_nginx['enable'] = false
registry['enable'] = true

After editing the both files you have to restart nginx and gitlab

Answer 3

I faced the same issue after updating Gitlab from docker.

Just fixed by adding :

gitlab_rails['registry_enabled'] = true
registry_nginx['enable'] = false
registry['enable'] = true