| `default_branch_protection` | integer | no | Determine if developers can push to master. Can take `0`_(not protected, both developers and masters can push new commits, force push or delete the branch)_, `1`_(partially protected, developers can push new commits, but cannot force push or delete the branch, masters can do anything)_ or `2`_(fully protected, developers cannot push new commits, force push or delete the branch, masters can do anything)_ as a parameter. Default is `2`. |
| `restricted_visibility_levels` | array of strings | no | Selected levels cannot be used by non-admin users for projects or snippets. Can take `private`, `internal` and `public` as a parameter. Default is null which means there is no restriction. |
| `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`.|
| `default_group_visibility` | string | no | What visibility level new groups receive. Can take `private`, `internal` and `public` as a parameter. Default is `private`.|
| `domain_whitelist` | array of strings | no | Force people to use only corporate emails for sign-up. Default is null, meaning there is no restriction. |
| `domain_blacklist` | array of strings | yes (if `domain_blacklist_enabled` is `true`) | People trying to sign-up with emails from this domain will not be allowed to do so. |
| `repository_storages` | array of strings | no | A list of names of enabled storage paths, taken from `gitlab.yml`. New projects will be created in one of these stores, chosen at random. |
| `enabled_git_access_protocol` | string | no | Enabled protocols for Git access. Allowed values are: `ssh`, `http`, and `nil` to allow both protocols. |
| `koding_enabled` | boolean | no | Enable Koding integration. Default is `false`. |
| `koding_url` | string | yes (if `koding_enabled` is `true`) | The Koding instance URL for integration. |