IP allowlist

GitLab provides some monitoring endpoints that provide health check information when probed.

To control access to those endpoints through IP allowlisting, you can add single hosts or use IP ranges:

Linux package (Omnibus)

  1. Open /etc/gitlab/gitlab.rb and add or uncomment the following: 

    gitlab_rails['monitoring_whitelist'] = ['127.0.0.0/8', '192.168.0.1']

  2. Save the file and reconfigure GitLab for the changes to take effect.

Helm chart (Kubernetes)

You can set the required IPs under the gitlab.webservice.monitoring.ipWhitelist key. For example: 

gitlab:
   webservice:
      monitoring:
         # Monitoring IP allowlist
         ipWhitelist:
         - 0.0.0.0/0 # Default
Self-compiled (source)

  1. Edit config/gitlab.yml: 

    monitoring:
  # by default only local IPs are allowed to access monitoring resources
  ip_whitelist:
    - 127.0.0.0/8
    - 192.168.0.1

  2. Save the file and restart GitLab for the changes to take effect.