# AzuraCast Settings

# Environment Variables {#environment-variables}


There are 2 files with environment variables that can change different aspects of AzuraCast.

Remember to restart AzuraCast after changing values in these files via:

```
docker-compose down
docker-compose up -d
```


## The `.env` File {#the-env-file}




> [!TIP]
> **Note the filename...**
>
> Because this file's name starts with a period, it is often hidden when using commands like `ls` to view a directory. You can list a directory (including this file) by using the `ls -a` flag (i.e. `ls -lah`).



The `.env` file is used by Docker itself to determine how certain parts of the infrastructure is set up.

The default `.env` file contains the following variables:

| Variable | Default Value | Description
| - | - | -
| `COMPOSE_PROJECT_NAME` | azuracast | An internal variable used by Docker Compose; this should not be changed.
| `AZURACAST_HTTP_PORT` | 80 | The port used to serve insecure HTTP web traffic.
| `AZURACAST_HTTPS_PORT` | 443 | The port used to serve secure HTTPS web traffic.
| `AZURACAST_SFTP_PORT` | 2022 | The port used to listen for incoming SFTP connections (used for bulk file management).
| `NGINX_TIMEOUT` | 1800 | The time limit (in seconds) that nginx will wait for a response from the PHP application. Corresponds with `proxy_read_timeout` on the proxy and `fastcgi_read_timeout` on the web container. This should match your longest timeout value in `azuracast.env`.
| `AZURACAST_PUID` | 1000 | The effective User ID (UID) of the user inside Docker. Matching this to your host UID (`id -u`) can fix permission issues.
| `AZURACAST_PGID` | 1000 | The effective Group ID (GID) of the user inside Docker. Matching this to your host GID (`id -g`) can fix permission issues.
| `AZURACAST_COMPOSE_PRIVILEGED` | true | Use privileged Docker settings that may not work in nested virtualization environments.

If you don't want to manually edit this file, you can also change the HTTP, HTTPS and SFTP ports by running `./docker.sh change-ports`.


## The `azuracast.env` File {#the-azuracastenv-file}


The default `azuracast.env` contains the following variables:


### AzuraCast Customization {#azuracast-customization}


| Variable | Default Value | Description
| - | - | -
| `LANG` | en_US | The locale to use for CLI commands. <br> Valid options: `en_US`, `cs_CZ`, `nl_NL`, `fr_FR`, `de_DE`, `el_GR`, `it_IT`, `ja_JP`, `ko_KR`, `nb_NO`, `pl_PL`, `pt_PT`, `pt_BR`, `ru_RU`, `zh_CN`, `es_ES`, `sv_SE`, `tr_TR`, `uk_UA`
| `APPLICATION_ENV` | production | The application environment. <br> Valid options: `production`, `development`, `testing`
| `LOG_LEVEL` | notice | This allows you to log debug-level errors temporarily (for problem-solving) or reduce the volume of logs that are produced by your installation, without needing to modify whether your installation is a production or development instance.<br> Valid options: `debug`, `info`, `notice`, `warning`, `error`, `critical`, `alert`, `emergency`
| `COMPOSER_PLUGIN_MODE` | false | Enable the composer "merge" functionality to combine the main application's composer.json file with any plugins' composer files. This can have performance implications, so you should only use it if you use one or more plugins with their own Composer dependencies. <br> Valid options: true, false
| `AUTO_ASSIGN_PORT_MIN` | 8000 | The minimum port number to use when automatically assigning ports to a station. By default, this matches the first forwarded port on the "stations" container. You can modify this variable if your station port range is different. Be sure to also forward the necessary ports via `docker-compose.yml` (and nginx, if you want to use the built-in port-80/443 proxy)!
| `AUTO_ASSIGN_PORT_MAX` | 8499 | The maximum port number to use when automatically assigning ports to a station. If using the default `AUTO_ASSIGN_PORT_MIN` OF 8000, using the default 8499 allows for 50 unique stations to operate.
| `SHOW_DETAILED_ERRORS` | false | This allows you to debug Slim Application Errors you may encounter. By default, this is disabled to prevent users from seeing privileged information. Please report any Slim Application Error logs [to the development team on GitHub](https://github.com/slimphp/Slim/issues).


### Database Configuration {#database-configuration}


| Variable | Default Value | Description
| - | - | -
| `MYSQL_HOST` | localhost | The host to connect to. Leave this as the default value unless you're connecting to an external database server.
| `MYSQL_PORT` | 3306 | The port to connect to. Leave this as the default value unless you're connecting to an external database server.
| `MYSQL_USER` | azuracast | The username AzuraCast will use to connect to the database.
| `MYSQL_PASSWORD` | azur4c457 | The password AzuraCast will use to connect to the database. By default, the database is not exposed to the Internet at all and this is only an internal password used by the service itself.
| `MYSQL_DATABASE` | azuracast | The name of the AzuraCast database.
| `MYSQL_RANDOM_ROOT_PASSWORD` | yes | Automatically generate a random root password upon the first database spin-up. This password will be visible in the mariadb container's logs.
| `MYSQL_SLOW_QUERY_LOG` | 0 | Log slower queries for the purpose of diagnosing issues. Only turn this on when you need to, by uncommenting this and switching it to 1. <br> To read the slow query log once enabled, run: `docker-compose exec mariadb slow_queries`
| `MYSQL_MAX_CONNECTIONS` | 100 | Set the amount of allowed connections to the database. This value should be increased if you are seeing the `Too many connections` error in the logs.
| `MYSQL_INNODB_BUFFER_POOL_SIZE` | 128M | The InnoDB buffer pool size controls how much data & indexes are kept in memory. Making sure that this value is as large as possible reduces the amount of disk IO.
| `MYSQL_INNODB_LOG_FILE_SIZE` | 16M | The InnoDB log file is used to achieve data durability in case of crashes or unexpected shutoffs and to allow the DB to better optimize IO for write operations.


### Redis Configuration {#redis-configuration}


Uncomment these fields if you are using a third-party Redis host instead of the one provided with AzuraCast.

Do not modify these fields if you are using the standard AzuraCast Redis host.

| Variable | Default Value | Description
| - | - | -
| `ENABLE_REDIS` | true | Disable to use a flatfile cache instead of Redis.
| `REDIS_HOST` | localhost | Name of the Redis host.
| `REDIS_PORT` | 6379 | Port to connect to on the Redis host.
| `REDIS_DB` | 1 | Database index to use on the Redis host.


### Advanced Configuration {#advanced-configuration}


| Variable | Default Value | Description
| - | - | -
| `PHP_MAX_FILE_SIZE` | 25M | PHP's maximum POST body size and max upload filesize.
| `PHP_MEMORY_LIMIT` | 128M | PHP's maximum memory limit.
| `PHP_MAX_EXECUTION_TIME` | 30 | PHP's maximum script execution time (in seconds).
| `SYNC_SHORT_EXECUTION_TIME` | 600 | The maximum execution time (and lock timeout) for the 15-second, 1-minute and 5-minute synchronization tasks.
| `SYNC_LONG_EXECUTION_TIME` | 1800 | The maximum execution time (and lock timeout) for the 1-hour synchronization task.
| `NOW_PLAYING_DELAY_TIME` | 10 | The delay (in seconds) between Now Playing checks for every station. Decrease for more frequent checks at the expense of performance; increase for less frequent checks but better performance (for large installations). Minimum of 5 and maximum of 60 seconds.
| `NOW_PLAYING_MAX_CONCURRENT_PROCESSES` | 1/3rd the total number of stations, rounded up | The maximum number of concurrent processes for now playing updates. Increasing this can help reduce the latency between updates now playing updates on large installations.
| `PHP_FPM_MAX_CHILDREN` | 5 | Maximum number of PHP-FPM worker processes to spawn.
| `PROFILING_EXTENSION_ENABLED` | 0 | Enable the SPX profiling extension in the Docker container, allowing for performance analysis of each page load.
| `PROFILING_EXTENSION_ALWAYS_ON` | false | This will have a significant performance impact on your installation.
| `PROFILING_EXTENSION_HTTP_KEY` | dev | The value for the "SPX_KEY" parameter for viewing profiling pages.
| `NGINX_CLIENT_MAX_BODY_SIZE` | 50M | This is the total size any single request body can be. AzuraCast chunks its uploads into smaller file sizes, so this only applies when doing custom uploads via the API. Sizes should be listed in a format like "100K", "128M", "1G" for kilobytes, megabytes, and gigabytes respectively.
| `ENABLE_WEB_UPDATER` | true | Enable web-based Docker image updates.
| `INSTALL_PACKAGES_ON_STARTUP` | none | Extra Ubuntu packages to install upon startup. Separate package names with a space. Packages will be installed during container startup.
| `NGINX_BLOCK_BOTS` | true | If enabled, it automatically blocks bad crawlers, spammers and bots, powered by the [Nginx Ultimate Bad Bot Blocker](https://github.com/mitchellkrogza/nginx-ultimate-bad-bot-blocker), with rules updated daily to ensure up-to-date protection.