---
title: "Environment Variables — Mayan EDMS 4.8.3 documentation"
source: "https://docs.mayan-edms.com/chapters/docker/environment_variables.html"
author:
published:
created: 2024-10-27
description:
tags:
  - "clippings"
---
The common set of settings can also be modified via environment variables when using the Docker image. In addition to the common set of settings, some Docker image specific environment variables are available.

## Celery

The Docker image ships with four workers by default. These are named: A, B, C, D. The workers are differentiated by the response time of the tasks they handle. The “A” worker handles the interactive tasks that are expected to complete the fastest and the “D” worker handling the long running tasks.

### Worker A

- `MAYAN_WORKER_A_CONCURRENCY`

Optional. Allows setting the worker’s `concurrency` value ([https://docs.celeryproject.org/en/stable/userguide/workers.html#concurrency](https://docs.celeryproject.org/en/stable/userguide/workers.html#concurrency)). Default: 0.
- `MAYAN_WORKER_A_MAX_MEMORY_PER_CHILD`

Optional. Allows setting the worker’s `max-memory-per-child` value ([https://docs.celeryproject.org/en/stable/userguide/workers.html#max-memory-per-child-setting](https://docs.celeryproject.org/en/stable/userguide/workers.html#max-memory-per-child-setting)). Default: 500000.
- `MAYAN_WORKER_A_MAX_TASKS_PER_CHILD`

Optional. Allows setting the worker’s `maximum_tasks_per_child` value ([https://docs.celeryproject.org/en/stable/userguide/workers.html#maximum\_tasks\_per\_child](https://docs.celeryproject.org/en/stable/userguide/workers.html#maximum_tasks_per_child)). Default: 500.

### Worker B

- `MAYAN_WORKER_B_CONCURRENCY`

Optional. Allows setting the worker’s `concurrency` value ([https://docs.celeryproject.org/en/stable/userguide/workers.html#concurrency](https://docs.celeryproject.org/en/stable/userguide/workers.html#concurrency)). Default: 0.
- `MAYAN_WORKER_B_MAX_MEMORY_PER_CHILD`

Optional. Allows setting the worker’s `max-memory-per-child` value ([https://docs.celeryproject.org/en/stable/userguide/workers.html#max-memory-per-child-setting](https://docs.celeryproject.org/en/stable/userguide/workers.html#max-memory-per-child-setting)). Default: 500000.
- `MAYAN_WORKER_B_MAX_TASKS_PER_CHILD`

Optional. Allows setting the worker’s `maximum_tasks_per_child` value ([https://docs.celeryproject.org/en/stable/userguide/workers.html#maximum\_tasks\_per\_child](https://docs.celeryproject.org/en/stable/userguide/workers.html#maximum_tasks_per_child)). Default: 500.

### Worker C

- `MAYAN_WORKER_C_CONCURRENCY`

Optional. Allows setting the worker’s `concurrency` value ([https://docs.celeryproject.org/en/stable/userguide/workers.html#concurrency](https://docs.celeryproject.org/en/stable/userguide/workers.html#concurrency)). Default: 0.
- `MAYAN_WORKER_C_MAX_MEMORY_PER_CHILD`

Optional. Allows setting the worker’s `max-memory-per-child` value ([https://docs.celeryproject.org/en/stable/userguide/workers.html#max-memory-per-child-setting](https://docs.celeryproject.org/en/stable/userguide/workers.html#max-memory-per-child-setting)). Default: 500000.
- `MAYAN_WORKER_C_MAX_TASKS_PER_CHILD`

Optional. Allows setting the worker’s `maximum_tasks_per_child` value ([https://docs.celeryproject.org/en/stable/userguide/workers.html#maximum\_tasks\_per\_child](https://docs.celeryproject.org/en/stable/userguide/workers.html#maximum_tasks_per_child)). Default: 500.

### Worker D

- `MAYAN_WORKER_D_CONCURRENCY`

Optional. Allows setting the worker’s `concurrency` value ([https://docs.celeryproject.org/en/stable/userguide/workers.html#concurrency](https://docs.celeryproject.org/en/stable/userguide/workers.html#concurrency)). Default: 1.
- `MAYAN_WORKER_D_MAX_MEMORY_PER_CHILD`

Optional. Allows setting the worker’s `max-memory-per-child` value ([https://docs.celeryproject.org/en/stable/userguide/workers.html#max-memory-per-child-setting](https://docs.celeryproject.org/en/stable/userguide/workers.html#max-memory-per-child-setting)). Default: 500000.
- `MAYAN_WORKER_D_MAX_TASKS_PER_CHILD`

Optional. Allows setting the worker’s `maximum_tasks_per_child` value ([https://docs.celeryproject.org/en/stable/userguide/workers.html#maximum\_tasks\_per\_child](https://docs.celeryproject.org/en/stable/userguide/workers.html#maximum_tasks_per_child)). Default: 500.

### Worker E

- `MAYAN_WORKER_E_CONCURRENCY`

Optional. Allows setting the worker’s `concurrency` value ([https://docs.celeryproject.org/en/stable/userguide/workers.html#concurrency](https://docs.celeryproject.org/en/stable/userguide/workers.html#concurrency)). Default: 0.
- `MAYAN_WORKER_E_MAX_MEMORY_PER_CHILD`

Optional. Allows setting the worker’s `max-memory-per-child` value ([https://docs.celeryproject.org/en/stable/userguide/workers.html#max-memory-per-child-setting](https://docs.celeryproject.org/en/stable/userguide/workers.html#max-memory-per-child-setting)). Default: 500000.
- `MAYAN_WORKER_E_MAX_TASKS_PER_CHILD`

Optional. Allows setting the worker’s `maximum_tasks_per_child` value ([https://docs.celeryproject.org/en/stable/userguide/workers.html#maximum\_tasks\_per\_child](https://docs.celeryproject.org/en/stable/userguide/workers.html#maximum_tasks_per_child)). Default: 500.

## Docker

- `MAYAN_DOCKER_WAIT`

Optional. Make the Docker container wait for a host and port to become available. Multiple hosts and port combinations are supported.

Example:

```
-e MAYAN_DOCKER_WAIT="db:5432 redis:6379"
```
- `MAYAN_USER_GID`

Optional. Changes the GID of the `mayan` user internal to the Docker container. Defaults to 1000.
- `MAYAN_USER_UID`

Optional. Changes the UID of the `mayan` user internal to the Docker container. Defaults to 1000.

## Gunicorn

- `MAYAN_GUNICORN_LIMIT_REQUEST_LINE`

Optional. Allows setting Gunicorn’s `limit_request_line` value ([https://docs.gunicorn.org/en/latest/settings.html#limit-request-line](https://docs.gunicorn.org/en/latest/settings.html#limit-request-line)). Default: 4094.
- `MAYAN_GUNICORN_MAX_REQUESTS`

Optional. Allows setting Gunicorn’s `max_requests` value ([https://docs.gunicorn.org/en/latest/settings.html#max-requests](https://docs.gunicorn.org/en/latest/settings.html#max-requests)). Default: 500.
- `MAYAN_GUNICORN_REQUESTS_JITTER`

Optional. Allows setting Gunicorn’s `max_requests_jitter` value ([https://docs.gunicorn.org/en/latest/settings.html#max-requests-jitter](https://docs.gunicorn.org/en/latest/settings.html#max-requests-jitter)). Default: 50.
- `MAYAN_GUNICORN_TIMEOUT`

Optional. Allows setting Gunicorn’s `timeout` value ([https://docs.gunicorn.org/en/latest/settings.html#timeout](https://docs.gunicorn.org/en/latest/settings.html#timeout)). Default: 120.
- `MAYAN_GUNICORN_WORKER_CLASS`

Optional. Allows setting Gunicorn’s `worker_class` value ([https://docs.gunicorn.org/en/latest/settings.html#worker-class](https://docs.gunicorn.org/en/latest/settings.html#worker-class)). Default: gevent.
- `MAYAN_GUNICORN_WORKERS`

Optional. Allows setting Gunicorn’s `workers` value ([https://docs.gunicorn.org/en/latest/settings.html#workers](https://docs.gunicorn.org/en/latest/settings.html#workers)). Default: 3.

## Mayan EDMS

- `MAYAN_SETTINGS_MODULE`

Optional. Allows loading an alternate settings file.
- `MAYAN_SKIP_CHOWN_ON_STARTUP`

Optional. Setting this environment variable to `true`, will make the entrypoint script skip the initial `chwon` command on the media folder at `/var/lib/mayan`.

## Operating system

- `MAYAN_APT_INSTALLS`

Specifies a list of .deb packages to be installed via APT when the container is first created. The installed packages are not lost when the image is stopped. Example: To install the Tesseract OCR language packs for German and Spanish add the following in your `docker start` command line:

```
-e MAYAN_APT_INSTALLS="tesseract-ocr-deu tesseract-ocr-spa"
```

## Python

- `MAYAN_PIP_INSTALLS`

Specifies a list of Python packages to be installed via `pip`. Packages will be downloaded from the Python Package Index ([https://pypi.python.org](https://pypi.python.org/)) by default.

## User code

- `MAYAN_DOCKER_SCRIPT_PRE_SETUP`

Optional. Executed after the container’s environment variables are configured but before the UID/GID setup, extra OS package installation and extra Python library installations. Executes the content as a script or call a script using the value as the filename.
- `MAYAN_DOCKER_SCRIPT_POST_SETUP`

Optional. Executed after the container’s environment variables are configured, after the UID/GID setup, extra OS package installation and extra Python library installations but before launching the Mayan EDMS stack. Executes the content as a script or call a script using the value as the filename.

Complete details about these environment variables can be found in the chapter: [Executing user scripts](https://docs.mayan-edms.com/user_scripts.html#docker-user-scripts)