Установка GitLab на собственный сервер

sudo apt update
sudo apt install ca-certificates curl openssh-server tzdata perl
cd /tmp
curl -LO https://packages.gitlab.com/install/repositories/gitlab/gitlab-ce/script.deb.sh
sudo bash /tmp/script.deb.sh

Устанавливаем GitLab

sudo apt install gitlab-ce

Настраиваем файрвол (по требованию)

sudo ufw allow http
sudo ufw allow https
sudo ufw allow OpenSSH

Редактируем настройки

sudo nano /etc/gitlab/gitlab.rb

...
## GitLab URL
##! URL on which GitLab will be reachable.
##! For more details on configuring external_url see:
##! https://docs.gitlab.com/omnibus/settings/configuration.html#configuring-the-external-url-for-gitlab
##!
##! Note: During installation/upgrades, the value of the environment variable
##! EXTERNAL_URL will be used to populate/replace this value.
##! On AWS EC2 instances, we also attempt to fetch the public hostname/IP
##! address from AWS. For more details, see:
##! https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/instancedata-data-retrieval.html
external_url 'http://your_domain'
...

Примечание: обязательно указываем http

sudo gitlab-ctl reconfigure

Настраиваем прокси и SSL

В файле /etc/gitlab/gitlab.rb устанавливаем

nginx['enable'] = false
web_server['external_users'] = ['www-data']

В Nginx создаём сайт:

## GitLab 8.3+
##
## Lines starting with two hashes (##) are comments with information.
## Lines starting with one hash (#) are configuration parameters that can be uncommented.
##
##################################
##        CONTRIBUTING          ##
##################################
##
## If you change this file in a Merge Request, please also create
## a Merge Request on https://gitlab.com/gitlab-org/omnibus-gitlab/merge_requests
##
###################################
##         configuration         ##
###################################
##
## See installation.md#using-https for additional HTTPS configuration details.

upstream gitlab-workhorse {
  # On GitLab versions before 13.5, the location is
  # `/var/opt/gitlab/gitlab-workhorse/socket`. Change the following line
  # accordingly.
  server unix:/var/opt/gitlab/gitlab-workhorse/sockets/socket;
}

## Normal HTTP host
server {
  ## Either remove "default_server" from the listen line below,
  ## or delete the /etc/nginx/sites-enabled/default file. This will cause gitlab
  ## to be served if you visit any address that your server responds to, eg.
  ## the ip address of the server (http://x.x.x.x/)n 0.0.0.0:80 default_server;
  listen 0.0.0.0:7001;
  listen [::]:7001;
  server_name YOUR_SERVER_FQDN; ## Replace this with something like gitlab.example.com
  server_tokens off; ## Don't show the nginx version number, a security best practice
  root /opt/gitlab/embedded/service/gitlab-rails/public;

  ## See app/controllers/application_controller.rb for headers set

  ## Individual nginx logs for this GitLab vhost
  access_log  /var/log/nginx/gitlab_access.log;
  error_log   /var/log/nginx/gitlab_error.log;

  location / {
    client_max_body_size 0;
    gzip off;

    ## https://github.com/gitlabhq/gitlabhq/issues/694
    ## Some requests take more than 30 seconds.
    proxy_read_timeout      300;
    proxy_connect_timeout   300;
    proxy_redirect          off;

    proxy_http_version 1.1;

    proxy_set_header    Host                $http_host;
    proxy_set_header    X-Real-IP           $remote_addr;
    proxy_set_header    X-Forwarded-For     $proxy_add_x_forwarded_for;
    proxy_set_header    X-Forwarded-Proto   $scheme;

    proxy_pass http://gitlab-workhorse;
  }
}

В файле nano /etc/nginx/nginx.conf добавляем:

http {

   ...
  
   server {
       listen 80;
       server_name gitlab.yourdomain.com;
       location / {
           proxy_pass http://127.0.0.1:7001;
       }
   }
}

sudo gitlab-ctl reconfigure
sudo systemctl reload nginx

sudo apt install certbot python3-certbot-nginx
certbot --nginx

Примечание: если выполнил gitlab-ctl reconfigure, то обязательно перезапускаем nginx

Настраиваем SMTP:

gitlab_rails['smtp_enable'] = true
gitlab_rails['smtp_address'] = "smtp.server"
gitlab_rails['smtp_port'] = 465
gitlab_rails['smtp_user_name'] = "smtp user"
gitlab_rails['smtp_password'] = "smtp password"
gitlab_rails['smtp_domain'] = "example.com"
gitlab_rails['smtp_authentication'] = "login"
gitlab_rails['smtp_enable_starttls_auto'] = true
gitlab_rails['smtp_openssl_verify_mode'] = 'peer'

# If your SMTP server does not like the default 'From: gitlab@localhost' you
# can change the 'From' with this setting.
gitlab_rails['gitlab_email_from'] = 'gitlab@example.com'
gitlab_rails['gitlab_email_reply_to'] = 'noreply@example.com'

gitlab_rails['smtp_pool'] = true

Статьи:

Running GitLab in a memory-constrained environment

Lightweight GitLab

SMTP settings

How To Install and Configure GitLab on Ubuntu 20.04

Forwarding to GitLab Subdomain with Existing Nginx Installation

How To Secure Nginx with Let’s Encrypt on Ubuntu 20.04