# Environment Variables

Bumper has a number of environment variables to help with custom deployments and configuration. These should be set prior to executing Bumper.

| Setting            | Value                              | Description                                                                                                                |
| ------------------ | ---------------------------------- | -------------------------------------------------------------------------------------------------------------------------- |
| BUMPER_LISTEN      | {ipv4 address}                     | IP address to start server listeners on                                                                                    |
| BUMPER_ANNOUNCE_IP | {ipv4 address}                     | IP address to tell bots when they request the server location. May need to be set in cases such as when LISTEN is 0.0.0.0. |
| BUMPER_CA          | {full path to ca.crt location}     | The public CA certificate (ca.crt) to be loaded                                                                            |
| BUMPER_CERT        | {full path to bumper.crt location} | The public server certificate (bumper.crt) to be used by the Bumper server                                                 |
| BUMPER_KEY         | {full path to bumper.key location} | The private server key (bumper.key) to be used by the Bumper server                                                        |
| BUMPER_LOGS        | {full path to logs directory}      | The directory where logs should be stored                                                                                  |
| BUMPER_DATA        | {full path to data directory}      | The directory where persistent data should be stored (bumper.db)                                                           |
| BUMPER_DEBUG       | true                               | Run Bumper with debug mode/logging                                                                                         |
| LOG_TO_STDOUT      | true                               | Instead of logging to logs/, logs to to STDOUT                                                                             |