| `admin_notification_email` | string | no | Abuse reports will be sent to this address if it is set. Abuse reports are always available in the Admin Area. |
| `allow_local_requests_from_hooks_and_services` | boolean | no | (Deprecated: Use `allow_local_requests_from_web_hooks_and_services` instead) Allow requests to the local network from hooks and services. |
| `allow_local_requests_from_system_hooks` | boolean | no | Allow requests to the local network from system hooks. |
| `allow_local_requests_from_web_hooks_and_services` | boolean | no | Allow requests to the local network from web hooks and services. |
| `archive_builds_in_human_readable` | string | no | Set the duration for which the jobs will be considered as old and expired. Once that time passes, the jobs will be archived and no longer able to be retried. Make it empty to never expire jobs. It has to be no less than 1 day, for example: <code>15 days</code>, <code>1 month</code>, <code>2 years</code>. |
| `asset_proxy_enabled` | boolean | no | (**If enabled, requires:** `asset_proxy_url`) Enable proxying of assets. GitLab restart is required to apply changes. |
| `asset_proxy_secret_key` | string | no | Shared secret with the asset proxy server. GitLab restart is required to apply changes. |
| `asset_proxy_url` | string | no | URL of the asset proxy server. GitLab restart is required to apply changes. |
| `asset_proxy_whitelist` | string or array of strings | no | Assets that match these domain(s) will NOT be proxied. Wildcards allowed. Your GitLab installation URL is automatically whitelisted. GitLab restart is required to apply changes. |
| `authorized_keys_enabled` | boolean | no | By default, we write to the `authorized_keys` file to support Git over SSH without additional configuration. GitLab can be optimized to authenticate SSH keys via the database file. Only disable this if you have configured your OpenSSH server to use the AuthorizedKeysCommand. |
| `auto_devops_domain` | string | no | Specify a domain to use by default for every project's Auto Review Apps and Auto Deploy stages. |
| `auto_devops_enabled` | boolean | no | Enable Auto DevOps for projects by default. It will automatically build, test, and deploy applications based on a predefined CI/CD configuration. |
| `check_namespace_plan` | boolean | no | **(PREMIUM)** Enabling this will make only licensed EE features available to projects if the project namespace's plan includes the feature or if the project is public. |
| `default_branch_protection` | integer | no | Determine if developers can push to master. Can take: `0`_(not protected, both developers and maintainers can push new commits, force push, or delete the branch)_, `1`_(partially protected, developers and maintainers can push new commits, but cannot force push, or delete, the branch)_ or `2`_(fully protected, developers cannot push new commits, but maintainers can; no-one can force push or delete the branch)_ as a parameter. Default is `2`. |
| `default_group_visibility` | string | no | What visibility level new groups receive. Can take `private`, `internal` and `public` as a parameter. Default is `private`. |
| `default_project_visibility` | string | no | What visibility level new projects receive. Can take `private`, `internal` and `public` as a parameter. Default is `private`. |
| `default_snippet_visibility` | string | no | What visibility level new snippets receive. Can take `private`, `internal` and `public` as a parameter. Default is `private`. |
| `dns_rebinding_protection_enabled` | boolean | no | Enforce DNS rebinding attack protection. |
| `domain_blacklist` | array of strings | no | Users with e-mail addresses that match these domain(s) will NOT be able to sign-up. Wildcards allowed. Use separate lines for multiple entries. Ex: `domain.com`, `*.domain.com`. |
| `domain_blacklist_enabled` | boolean | no | (**If enabled, requires:** `domain_blacklist`) Allows blocking sign-ups from emails from specific domains. |
| `domain_whitelist` | array of strings | no | Force people to use only corporate emails for sign-up. Default is `null`, meaning there is no restriction. |
| `dsa_key_restriction` | integer | no | The minimum allowed bit length of an uploaded DSA key. Default is `0` (no restriction). `-1` disables DSA keys. |
| `ecdsa_key_restriction` | integer | no | The minimum allowed curve size (in bits) of an uploaded ECDSA key. Default is `0` (no restriction). `-1` disables ECDSA keys. |
| `ed25519_key_restriction` | integer | no | The minimum allowed curve size (in bits) of an uploaded ED25519 key. Default is `0` (no restriction). `-1` disables ED25519 keys. |
| `elasticsearch_indexed_field_length_limit` | integer | no | **(PREMIUM)** Maximum size of text fields that will be indexed by Elasticsearch. 0 value means no limit. This does not apply to repository and wiki indexing. |
| `elasticsearch_max_bulk_concurrency` | integer | no | **(PREMIUM)** Maximum concurrency of Elasticsearch bulk requests per indexing operation. This only applies to repository indexing operations. |
| `elasticsearch_max_bulk_size_mb` | integer | no | **(PREMIUM)** Maximum size of Elasticsearch bulk indexing requests in MB. This only applies to repository indexing operations. |
| `elasticsearch_namespace_ids` | array of integers | no | **(PREMIUM)** The namespaces to index via Elasticsearch if `elasticsearch_limit_indexing` is enabled. |
| `elasticsearch_project_ids` | array of integers | no | **(PREMIUM)** The projects to index via Elasticsearch if `elasticsearch_limit_indexing` is enabled. |
| `elasticsearch_url` | string | no | **(PREMIUM)** The URL to use for connecting to Elasticsearch. Use a comma-separated list to support cluster (for example, `http://localhost:9200, http://localhost:9201"`). If your Elasticsearch instance is password protected, pass the `username:password` in the URL (for example, `http://<username>:<password>@<elastic_host>:9200/`). |
| `email_author_in_body` | boolean | no | Some email servers do not support overriding the email sender name. Enable this option to include the name of the author of the issue, merge request or comment in the email body instead. |
| `enabled_git_access_protocol` | string | no | Enabled protocols for Git access. Allowed values are: `ssh`, `http`, and `nil` to allow both protocols. |
| `enforce_terms` | boolean | no | (**If enabled, requires:** `terms`) Enforce application ToS to all users. |
| `external_auth_client_cert` | string | no | (**If enabled, requires:** `external_auth_client_key`) The certificate to use to authenticate with the external authorization service |
| `external_auth_client_key_pass` | string | no | Passphrase to use for the private key when authenticating with the external service this is encrypted when stored |
| `external_auth_client_key` | string | required by: `external_auth_client_cert` | Private key for the certificate when authentication is required for the external authorization service, this is encrypted when stored |
| `external_authorization_service_default_label` | string | required by: `external_authorization_service_enabled` | The default classification label to use when requesting authorization and no classification label has been specified on the project |
| `external_authorization_service_enabled` | boolean | no | (**If enabled, requires:** `external_authorization_service_default_label`, `external_authorization_service_timeout` and `external_authorization_service_url`) Enable using an external authorization service for accessing projects |
| `external_authorization_service_timeout` | float | required by: `external_authorization_service_enabled` | The timeout after which an authorization request is aborted, in seconds. When a request times out, access is denied to the user. (min: 0.001, max: 10, step: 0.001) |
| `external_authorization_service_url` | string | required by: `external_authorization_service_enabled` | URL to which authorization requests will be directed |
| `first_day_of_week` | integer | no | Start day of the week for calendar views and date pickers. Valid values are `0` (default) for Sunday, `1` for Monday, and `6` for Saturday. |
| `geo_node_allowed_ips` | string | yes | **(PREMIUM)** Comma-separated list of IPs and CIDRs of allowed secondary nodes. For example, `1.1.1.1, 2.2.2.0/24`. |
| `gitaly_timeout_default` | integer | no | Default Gitaly timeout, in seconds. This timeout is not enforced for Git fetch/push operations or Sidekiq jobs. Set to `0` to disable timeouts. |
| `gitaly_timeout_fast` | integer | no | Gitaly fast operation timeout, in seconds. Some Gitaly operations are expected to be fast. If they exceed this threshold, there may be a problem with a storage shard and 'failing fast' can help maintain the stability of the GitLab instance. Set to `0` to disable timeouts. |
| `gitaly_timeout_medium` | integer | no | Medium Gitaly timeout, in seconds. This should be a value between the Fast and the Default timeout. Set to `0` to disable timeouts. |
| `hashed_storage_enabled` | boolean | no | Create new projects using hashed storage paths: Enable immutable, hash-based paths and repository names to store repositories on disk. This prevents repositories from having to be moved or renamed when the Project URL changes and may improve disk I/O performance. (Always enabled since 13.0, configuration will be removed in 14.0) |
| `housekeeping_full_repack_period` | integer | required by: `housekeeping_enabled` | Number of Git pushes after which an incremental `git repack` is run. |
| `housekeeping_gc_period` | integer | required by: `housekeeping_enabled` | Number of Git pushes after which `git gc` is run. |
| `housekeeping_incremental_repack_period` | integer | required by: `housekeeping_enabled` | Number of Git pushes after which an incremental `git repack` is run. |
| `html_emails_enabled` | boolean | no | Enable HTML emails. |
| `mirror_available` | boolean | no | Allow repository mirroring to configured by project Maintainers. If disabled, only Admins will be able to configure repository mirroring. |
| `npm_package_requests_forwarding` | boolean | no | **(PREMIUM)** Use npmjs.org as a default remote repository when the package is not found in the GitLab NPM Registry |
| `maintenance_mode` | boolean | no | **(PREMIUM)** When instance is in maintenance mode, non-admin users can sign in with read-only access and make read-only API requests |
| `maintenance_mode_message` | string | no | **(PREMIUM)** Message displayed when instance is in maintenance mode |
| `outbound_local_requests_whitelist` | array of strings | no | Define a list of trusted domains or ip addresses to which local requests are allowed when local requests for hooks and services are disabled.
| `pages_domain_verification_enabled` | boolean | no | Require users to prove ownership of custom domains. Domain verification is an essential security measure for public GitLab sites. Users are required to demonstrate they control a domain before it is enabled. |
| `password_authentication_enabled_for_git` | boolean | no | Enable authentication for Git over HTTP(S) via a GitLab account password. Default is `true`. |
| `password_authentication_enabled_for_web` | boolean | no | Enable authentication for the web interface via a GitLab account password. Default is `true`. |
| `performance_bar_allowed_group_id` | string | no | (Deprecated: Use `performance_bar_allowed_group_path` instead) Path of the group that is allowed to toggle the performance bar. |
| `performance_bar_allowed_group_path` | string | no | Path of the group that is allowed to toggle the performance bar. |
| `performance_bar_enabled` | boolean | no | (Deprecated: Pass `performance_bar_allowed_group_path: nil` instead) Allow enabling the performance bar. |
| `plantuml_enabled` | boolean | no | (**If enabled, requires:** `plantuml_url`) Enable PlantUML integration. Default is `false`. |
| `plantuml_url` | string | required by: `plantuml_enabled` | The PlantUML instance URL for integration. |
| `polling_interval_multiplier` | decimal | no | Interval multiplier used by endpoints that perform polling. Set to `0` to disable polling. |
| `deletion_adjourned_period` | integer | no | **(PREMIUM ONLY)** The number of days to wait before removing a project or group that is marked for deletion. Value must be between 0 and 90.
| `pseudonymizer_enabled` | boolean | no | **(PREMIUM)** When enabled, GitLab will run a background job that will produce pseudonymized CSVs of the GitLab database that will be uploaded to your configured object storage directory.
| `push_event_hooks_limit` | integer | no | Number of changes (branches or tags) in a single push to determine whether webhooks and services will be fired or not. Webhooks and services won't be submitted if it surpasses that value. |
| `push_event_activities_limit` | integer | no | Number of changes (branches or tags) in a single push to determine whether individual push events or bulk push events will be created. [Bulk push events will be created](../user/admin_area/settings/push_event_activities_limit.md) if it surpasses that value. |
| `recaptcha_enabled` | boolean | no | (**If enabled, requires:** `recaptcha_private_key` and `recaptcha_site_key`) Enable reCAPTCHA. |
| `repository_checks_enabled` | boolean | no | GitLab will periodically run `git fsck` in all project and wiki repositories to look for silent disk corruption issues. |
| `repository_storages` | array of strings | no | (GitLab 13.0 and earlier) List of names of enabled storage paths, taken from `gitlab.yml`. New projects are created in one of these stores, chosen at random. |
| `repository_storages_weighted` | hash of strings to integers | no | (GitLab 13.1 and later) Hash of names of taken from `gitlab.yml` to weights. New projects are created in one of these stores, chosen by a weighted random selection. |
| `require_two_factor_authentication` | boolean | no | (**If enabled, requires:** `two_factor_grace_period`) Require all users to set up Two-factor authentication. |
| `restricted_visibility_levels` | array of strings | no | Selected levels cannot be used by non-admin users for groups, projects or snippets. Can take `private`, `internal` and `public` as a parameter. Default is `null` which means there is no restriction. |
| `rsa_key_restriction` | integer | no | The minimum allowed bit length of an uploaded RSA key. Default is `0` (no restriction). `-1` disables RSA keys. |
| `send_user_confirmation_email` | boolean | no | Send confirmation email on sign-up. |
| `session_expire_delay` | integer | no | Session duration in minutes. GitLab restart is required to apply changes |
| `shared_runners_enabled` | boolean | no | (**If enabled, requires:** `shared_runners_text` and `shared_runners_minutes`) Enable shared runners for new projects. |
| `shared_runners_minutes` | integer | required by: `shared_runners_enabled` | **(PREMIUM)** Set the maximum number of pipeline minutes that a group can use on shared Runners per month. |
| `signin_enabled` | string | no | (Deprecated: Use `password_authentication_enabled_for_web` instead) Flag indicating if password authentication is enabled for the web interface. |
| `two_factor_grace_period` | integer | required by: `require_two_factor_authentication` | Amount of time (in hours) that users are allowed to skip forced configuration of two-factor authentication. |
| `unique_ips_limit_enabled` | boolean | no | (**If enabled, requires:** `unique_ips_limit_per_user` and `unique_ips_limit_time_window`) Limit sign in from multiple ips. |
| `user_oauth_applications` | boolean | no | Allow users to register any application to use GitLab as an OAuth provider. |
| `user_show_add_ssh_key_message` | boolean | no | When set to `false` disable the "You won't be able to pull or push project code via SSH" warning shown to users with no uploaded SSH key. |
| `version_check_enabled` | boolean | no | Let GitLab inform you when an update is available. |
| `web_ide_clientside_preview_enabled` | boolean | no | Live Preview (allow live previews of JavaScript projects in the Web IDE using CodeSandbox Live Preview). |
