# Configuration for contributors

- [Integrations](#integrations)
- [SMTP-settings](#smtp-settings)
- [Server configuration](#server-configuration)
- [Environment variables](#environment-variables)

This document includes Fleet server configuration settings that are helpful when developing or contributing to Fleet.

Unlike the [fleetctl apply format](https://github.com/fleetdm/fleet/tree/main/docs/Contributing/fleetctl-apply.md), the files and settings in this document are not recommended for production use. Each setting includes the best practice for being successful in production.

## Server configuration

##### s3_software_installers_disable_ssl

AWS S3 Disable SSL. Useful for local testing.

- Default value: false
- Environment variable: `FLEET_S3_SOFTWARE_INSTALLERS_DISABLE_SSL`
- Config file format:
  ```yaml
  s3:
    software_installers_disable_ssl: false
  ```

##### s3_carves_disable_ssl

- Default value: false
- Environment variable: `FLEET_S3_CARVES_DISABLE_SSL`
- Config file format:
  ```yaml
  s3:
    carves_disable_ssl: false
  ```

##### mdm.apple_apns_cert_bytes

The content of the Apple Push Notification service (APNs) certificate. An X.509 certificate, PEM-encoded. Typically generated via `fleetctl generate mdm-apple`.

- Default value: ""
- Environment variable: `FLEET_MDM_APPLE_APNS_CERT_BYTES`
- Config file format:
  ```yaml
  mdm:
    apple_apns_cert_bytes: |
      -----BEGIN CERTIFICATE-----
      ... PEM-encoded content ...
      -----END CERTIFICATE-----
  ```

##### mdm.apple_apns_key_bytes

The content of the PEM-encoded private key for the Apple Push Notification service (APNs). Typically generated via `fleetctl generate mdm-apple`.

- Default value: ""
- Environment variable: `FLEET_MDM_APPLE_APNS_KEY_BYTES`
- Config file format:
  ```yaml
  mdm:
    apple_apns_key_bytes: |
      -----BEGIN RSA PRIVATE KEY-----
      ... PEM-encoded content ...
      -----END RSA PRIVATE KEY-----
  ```

##### mdm.apple_scep_cert_bytes

The content of the Simple Certificate Enrollment Protocol (SCEP) certificate. An X.509 certificate, PEM-encoded. Typically generated via `fleetctl generate mdm-apple`.

- Default value: ""
- Environment variable: `FLEET_MDM_APPLE_SCEP_CERT_BYTES`
- Config file format:
  ```yaml
  mdm:
    apple_scep_cert_bytes: |
      -----BEGIN CERTIFICATE-----
      ... PEM-encoded content ...
      -----END CERTIFICATE-----
  ```

The SCEP certificate/key pair generated by Fleet expires every 10 years. It's recommended to never change these unless they were compromised.

If your certificate/key pair was compromised and you change the pair, the disk encryption keys will no longer be viewable on all macOS hosts' **Host details** page until you turn disk encryption off and back on and the keys are [reset by the end user](https://fleetdm.com/docs/using-fleet/MDM-migration-guide#how-to-turn-on-disk-encryption).

##### mdm.apple_scep_key_bytes

The content of the PEM-encoded private key for the Simple Certificate Enrollment Protocol (SCEP). Typically generated via `fleetctl generate mdm-apple`.

- Default value: ""
- Environment variable: `FLEET_MDM_APPLE_SCEP_KEY_BYTES`
- Config file format:
  ```yaml
  mdm:
    apple_scep_key_bytes: |
      -----BEGIN RSA PRIVATE KEY-----
      ... PEM-encoded content ...
      -----END RSA PRIVATE KEY-----
  ```

##### mdm.apple_scep_challenge

An alphanumeric secret for the Simple Certificate Enrollment Protocol (SCEP). Define a unique, static secret 32 characters in length and only include alphanumeric characters.

> SCEP is commonly applied to a number of certificate use cases. Notably, Mobile Device Management (MDM) systems like Microsoft Intune and Apple MDM use SCEP for PKI certificate enrollment.

- Default value: ""
- Environment variable: `FLEET_MDM_APPLE_SCEP_CHALLENGE`
- Config file format:
  ```yaml
  mdm:
    apple_scep_challenge: scepchallenge
  ```

##### mdm.apple_bm_server_token_bytes

This is the content of the Apple Business Manager encrypted server token downloaded from Apple Business Manager.

- Default value: ""
- Environment variable: `FLEET_MDM_APPLE_BM_SERVER_TOKEN_BYTES`
- Config file format:
  ```yaml
  mdm:
    apple_bm_server_token_bytes: |
      Content-Type: application/pkcs7-mime; name="smime.p7m"; smime-type=enveloped-data
      Content-Transfer-Encoding: base64
      ... rest of content ...
  ```

##### mdm.apple_bm_cert_bytes

This is the content of the Apple Business Manager certificate. The certificate is a PEM-encoded X.509 certificate that's typically generated via `fleetctl generate mdm-apple-bm`.

- Default value: ""
- Environment variable: `FLEET_MDM_APPLE_BM_CERT_BYTES`
- Config file format:
  ```yaml
  mdm:
    apple_bm_cert_bytes: |
      -----BEGIN CERTIFICATE-----
      ... PEM-encoded content ...
      -----END CERTIFICATE-----
  ```

##### mdm.apple_bm_key_bytes

This is the content of the PEM-encoded private key for the Apple Business Manager. It's typically generated via `fleetctl generate mdm-apple-bm`.

- Default value: ""
- Environment variable: `FLEET_MDM_APPLE_BM_KEY_BYTES`
- Config file format:
  ```yaml
  mdm:
    apple_bm_key_bytes: |
      -----BEGIN RSA PRIVATE KEY-----
      ... PEM-encoded content ...
      -----END RSA PRIVATE KEY-----
  ```

## Environment variables

### FLEET_ENABLE_POST_CLIENT_DEBUG_ERRORS

Use this environment variable to allow `fleetd` to report errors to the server using the [endpoint to report an agent error](./API-for-contributors.md#report-an-agent-error).

<meta name="pageOrderInSection" value="1100">
<meta name="description" value="Learn about the configuration files and settings that are helpful when developing or contributing to Fleet.">