mealie/docs/docs/documentation/getting-started/installation/backend-config.md

# Backend Configuration

## API Environment Variables

### General

| Variables     |        Default        | Description                                                                         |
| ------------- | :-------------------: | ----------------------------------------------------------------------------------- |
| PUID          |          911          | UserID permissions between host OS and container                                    |
| PGID          |          911          | GroupID permissions between host OS and container                                   |
| DEFAULT_GROUP |         Home          | The default group for users                                                         |
| DEFAULT_EMAIL |  changeme@example.com   | The default username for the superuser                                              |
| BASE_URL      | http://localhost:8080 | Used for Notifications                                                              |
| TOKEN_TIME    |          48           | The time in hours that a login/auth token is valid                                  |
| API_PORT      |         9000          | The port exposed by backend API. **Do not change this if you're running in Docker** |
| API_DOCS      |         True          | Turns on/off access to the API documentation locally.                               |
| TZ            |          UTC          | Must be set to get correct date/time on the server                                  |
| ALLOW_SIGNUP  |         true          | Allow user sign-up without token (should match frontend env)                        |

### Security

| Variables                   | Default | Description                                                                         |
| --------------------------- | :-----: | ----------------------------------------------------------------------------------- |
| SECURITY_MAX_LOGIN_ATTEMPTS |    5    | Maximum times a user can provide an invalid password before their account is locked |
| SECURITY_USER_LOCKOUT_TIME  |   24    | Time in hours for how long a users account is locked                                |

### Database

| Variables         | Default  | Description                      |
| ----------------- | :------: | -------------------------------- |
| DB_ENGINE         |  sqlite  | Optional: 'sqlite', 'postgres'   |
| POSTGRES_USER     |  mealie  | Postgres database user           |
| POSTGRES_PASSWORD |  mealie  | Postgres database password       |
| POSTGRES_SERVER   | postgres | Postgres database server address |
| POSTGRES_PORT     |   5432   | Postgres database port           |
| POSTGRES_DB       |  mealie  | Postgres database name           |

### Email

| Variables          | Default | Description                                       |
| ------------------ | :-----: | ------------------------------------------------- |
| SMTP_HOST          |  None   | Required For email                                |
| SMTP_PORT          |   587   | Required For email                                |
| SMTP_FROM_NAME     | Mealie  | Required For email                                |
| SMTP_AUTH_STRATEGY |   TLS   | Required For email, Options: 'TLS', 'SSL', 'NONE' |
| SMTP_FROM_EMAIL    |  None   | Required For email                                |
| SMTP_USER          |  None   | Required if SMTP_AUTH_STRATEGY is 'TLS' or 'SSL'  |
| SMTP_PASSWORD      |  None   | Required if SMTP_AUTH_STRATEGY is 'TLS' or 'SSL'  |

### Webworker

Changing the webworker settings may cause unforeseen memory leak issues with Mealie. It's best to leave these at the defaults unless you begin to experience issues with multiple users. Exercise caution when changing these settings

| Variables        | Default | Description                                                                                                                       |
| ---------------- | :-----: | --------------------------------------------------------------------------------------------------------------------------------- |
| WEB_GUNICORN     |  false  | Enables Gunicorn to manage Uvicorn web for multiple works                                                                         |
| WORKERS_PER_CORE |    1    | Set the number of workers to the number of CPU cores multiplied by this value (Value \* CPUs). More info [here][workers_per_core] |
| MAX_WORKERS      |    1    | Set the maximum number of workers to use. Default is not set meaning unlimited. More info [here][max_workers]                     |
| WEB_CONCURRENCY  |    1    | Override the automatic definition of number of workers. More info [here][web_concurrency]                                         |

### LDAP

| Variables            | Default | Description                                                                                                                         |
| -------------------- | :-----: | ----------------------------------------------------------------------------------------------------------------------------------- |
| LDAP_AUTH_ENABLED    |  False  | Authenticate via an external LDAP server in addidion to built-in Mealie auth                                                        |
| LDAP_SERVER_URL      |  None   | LDAP server URL (e.g. ldap://ldap.example.com)                                                                                      |
| LDAP_TLS_INSECURE    |  False  | Do not verify server certificate when using secure LDAP                                                                             |
| LDAP_TLS_CACERTFILE  |  None   | File path to Certificate Authority used to verify server certificate (e.g. `/path/to/ca.crt`)                                       |
| LDAP_ENABLE_STARTTLS |  False  | Optional. Use STARTTLS to connect to the server                                                                                     |
| LDAP_BASE_DN         |  None   | Starting point when searching for users authentication (e.g. `CN=Users,DC=xx,DC=yy,DC=de`)                                          |
| LDAP_QUERY_BIND      |  None   | Optional bind user for LDAP search queries (e.g. `cn=admin,cn=users,dc=example,dc=com`). If `None` then anonymous bind will be used |
| LDAP_QUERY_PASSWORD  |  None   | Optional password for the bind user used in LDAP_QUERY_BIND                                                                         |
| LDAP_USER_FILTER     |  None   | Optional LDAP filter to narrow down eligible users (e.g. `(memberOf=cn=mealie_user,dc=example,dc=com)`)                             |
| LDAP_ADMIN_FILTER    |  None   | Optional LDAP filter, which tells Mealie the LDAP user is an admin (e.g. `(memberOf=cn=admins,dc=example,dc=com)`)                  |
| LDAP_ID_ATTRIBUTE    |   uid   | The LDAP attribute that maps to the user's id                                                                                       |
| LDAP_NAME_ATTRIBUTE  |  name   | The LDAP attribute that maps to the user's name                                                                                     |
| LDAP_MAIL_ATTRIBUTE  |  mail   | The LDAP attribute that maps to the user's email                                                                                    |