Setting custom environment variables

If necessary you can set custom environment variables to be used by Unicorn, Sidekiq, Rails and Rake via /etc/gitlab/gitlab.rb. This can be useful in situations where you need to use a proxy to access the internet and need to clone externally hosted repositories directly into GitLab. In /etc/gitlab/gitlab.rb supply a gitlab_rails['env'] with a hash value. For example:

gitlab_rails['env'] = {
    "http_proxy" => "http://USERNAME:PASSWORD@example.com:8080",
    "https_proxy" => "http://USERNAME:PASSWORD@example.com:8080"
#    "no_proxy" => ".yourdomain.com"  # Wildcard syntax if you need your internal domain to bypass proxy
}

You can also override environment variables from other GitLab components which might be required if you are behind a proxy:

# Needed for proxying Git clones
gitaly['env'] = {
    "http_proxy" => "http://USERNAME:PASSWORD@example.com:8080",
    "https_proxy" => "http://USERNAME:PASSWORD@example.com:8080",
    "no_proxy" => "unix"  # Workaround for https://gitlab.com/gitlab-org/gitaly/issues/1447
}

gitlab_workhorse['env'] = {
    "http_proxy" => "http://USERNAME:PASSWORD@example.com:8080",
    "https_proxy" => "http://USERNAME:PASSWORD@example.com:8080"
}

# If you use the docker registry
registry['env'] = {
    "http_proxy" => "http://USERNAME:PASSWORD@example.com:8080",
    "https_proxy" => "http://USERNAME:PASSWORD@example.com:8080"
}
Note: The no_proxy entry for Gitaly is needed in GitLab 11.6 and newer if a proxy is defined and Gitaly is listening on a UNIX socket, which it is by default. It appears to be a limitation in the gRPC client library. See the Gitaly issue for more details.
Note: GitLab 11.6 and newer will attempt to use HTTP Basic Authentication when a username and password is included in the proxy URL. Older GitLab versions will omit the authentication details.
Note: Proxy settings use the . syntax for globing.
Note: Proxy URL values should generally be http:// only, unless your proxy has its own SSL certificate and SSL enabled. This means, even for the https_proxy value, you should usually specify a value as http://USERNAME:PASSWORD@example.com:8080.

Applying the changes

Any change made to the environment variables requires a hard restart after reconfigure for it to take effect.

Note: During a hard restart, your GitLab instance will be down until the services are back up.

So, after editing gitlab.rb file, run the following commands

sudo gitlab-ctl reconfigure
sudo gitlab-ctl restart