Environment Variables

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). 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). Default: 400000.
MAYAN_WORKER_A_MAX_MEMORY_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). Default: 1000.

Worker B

MAYAN_WORKER_B_CONCURRENCY

Optional. Allows setting the worker’s concurrency value (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). Default: 400000.
MAYAN_WORKER_B_MAX_MEMORY_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). Default: 1000.

Worker C

MAYAN_WORKER_C_CONCURRENCY

Optional. Allows setting the worker’s concurrency value (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). Default: 400000.
MAYAN_WORKER_C_MAX_MEMORY_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). Default: 1000.

Worker D

MAYAN_WORKER_D_CONCURRENCY

Optional. Allows setting the worker’s concurrency value (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). Default: 400000.
MAYAN_WORKER_D_MAX_MEMORY_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). Default: 100.

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). Default: 4094.
MAYAN_GUNICORN_MAX_REQUESTS

Optional. Allows setting Gunicorn’s max_requests value (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). Default: 50.
MAYAN_GUNICORN_TIMEOUT

Optional. Allows setting Gunicorn’s timeout value (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). Default: sync.
MAYAN_GUNICORN_WORKERS

Optional. Allows setting Gunicorn’s workers value (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) 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