> ## Documentation Index
> Fetch the complete documentation index at: https://docs.rigbox.dev/llms.txt
> Use this file to discover all available pages before exploring further.

# Configure applications

> Declare runtime behavior once and verify it after deployment.

Use `rig.yaml` for repeatable configuration. A redeploy reapplies declared application settings; a temporary console or CLI edit can be overwritten by the manifest.

| Configure                         | Use                                             |
| --------------------------------- | ----------------------------------------------- |
| Nonsecret runtime values          | [Environment variables](/configure/environment) |
| Supplied or generated credentials | [Secrets and credentials](/configure/secrets)   |
| Validated user choices            | [Parameters](/configure/parameters)             |
| Installation and process startup  | [Commands](/configure/commands)                 |
| Readiness verification            | [Health checks](/configure/health)              |
| Public/private routes             | [App visibility](/guides/visibility)            |
| Listening ports and routing       | [Expose ports](/guides/expose-and-route)        |
| Hostnames                         | [Custom domains](/guides/custom-domains)        |

Run deployment commands locally from the manifest directory. After changing settings, deploy and check both release status and application behavior. Use the [manifest reference](/reference/rig-yaml) for field shapes and strategy-specific limits.