Table Of Contents
Table Of Contents

Tethys Platform Docker Image Reference

Last Updated: November 2021

Versions and Tags

The official Tethys Docker images are located in the tethysplatform/tethys-core Docker Hub repository. Images released are tagged using the following format:

Tag

Description

latest

latest tagged released

master

latest development build (what's in the master branch)

version

Specify the version of Tethys image, for example: v3.0.5

Pull a Pre-Built Image

Use the following commands to download the Tethys image to your machine:

Latest Release

docker pull tethysplatform/tethys-core:latest

Latest Development Build

docker pull tethysplatform/tethys-core:master

Specific Version

docker pull tethysplatform/tethys-core:3.4.0

Build From Source

Make sure that there isn't already a Docker container or Docker images with the desired name:

docker build -t my-tethys-core:latest .

Alternatively, specify the Python version to build Tethys with using the PYTHON_VERSION build arg:

docker build --build-arg PYTHON_VERSION=3.6 -t my-tethys-core:latest .

Run Image

When running the docker you can use the -e flag to set environment variables. A list of available environment variables is given in a table below.

-e TETHYS_CONDA_ENV='tethys'

Example of Run Command:

docker run -d -p 80:80 --name tethys-core \
    -e TETHYS_DB_SUPERUSER='tethys_super' \
    -e TETHYS_DB_PASSWORD='please_dont_use_default_passwords' \
    -e TETHYS_DB_PORT='5432' \
    -e TETHYS_SUPERUSER='admin' \
    -e TETHYS_SUPERUSER_PASS='please_dont_use_default_passwords' \
    tethysplatform/tethys-core

Environment Variables

Tethys uses environment variables to build and initialize the app. These are the environment variables in Tethys:

Build Arguments

Use these build arguments with the build command to customize how the image is built.

Environment Variable

Description

PYTHON_VERSION

The version of Python to build the Tethys environment with. Defaults to "3.*".

Important Paths

These environment variables point to important paths in the container. Changing these will probably break the container.

Environment Variable

Description

TETHYS_HOME

Path to tethys home directory. Defaults to "/usr/lib/tethys".

TETHYS_LOG

Path to directory containing the tethys.log. Defaults to "/var/log/tethys".

TETHYS_PERSIST

Path to tethys_persist directory. Mount a drive from the host machine to this location to persist runtime data. Defaults to "/var/lib/tethys_persist".

TETHYS_APPS_ROOT

Path to directory where app source code should be placed. Defaults to "${TETHYS_HOME}/apps".

CONDA_HOME

Path to the conda installation. Defaults to "/opt/conda".

CONDA_ENV_NAME

Name of conda environment. Defaults to "tethys".

STATIC_ROOT

Path to the tethys static root folder. This also sets the associated setting in the portal_config.yml. Defaults to "${TETHYS_PERSIST}/static"

WORKSPACE_ROOT

Path to the tethys workspaces root folder. This also sets the associated setting in the portal_config.yml. Defaults to "${TETHYS_PERSIST}/workspaces"

TETHYS_MANAGE

Path to manage.py file. Defaults to "${TETHYS_HOME}/tethys/tethys_portal/manage.py"

BASH_PROFILE

The location of bash profile file. Defaults to ".bashrc"

Database Parameters

These environment variables are used to configure the database and database users Tethys Portal will use. If the database doesn't exist, then it will be created using the postgres user.

Environment Variable

Description

POSTGRES_PASSWORD

Password of the postgres user. Used to initialize the Tethys Portal database. Defaults to "pass".

TETHYS_DB_HOST

Host of the database server where the primary Tethys Portal database resides. Defaults to "db".

TETHYS_DB_PORT

Port of the database server where the primary Tethys Portal database resides. Defaults to "5432".

TETHYS_DB_NAME

Name of the primary Tethys Portal database. Defaults to "tethys_platform".

TETHYS_DB_USERNAME

Username of the owner of the primary Tethys Portal database. Defaults to "tethys_default".

TETHYS_DB_PASSWORD

Password of the owner of the primary Tethys Portal database. Defaults to "pass".

TETHYS_DB_SUPERUSER

Name of the database superuser used by Tethys Portal. Defaults to "tethys_super".

TETHYS_DB_SUPERUSER_PASS

Password of the database superuser used by Tethys Portal. Defaults to "pass".

Tethys Portal Admin User

Use these environment variables to set the username, password, and email of the Tethys Portal admin user that is created by the container.

Environment Variable

Description

PORTAL_SUPERUSER_NAME

Name for the Tethys portal super user. Empty by default.

PORTAL_SUPERUSER_EMAIL

Email for the Tethys portal super user. Empty by default.

PORTAL_SUPERUSER_PASSWORD

Password for the Tethys portal super user. Empty by default.

Tethys Settings

The following environment variables can be used to set some of the Tethys Settings found in the portal_config.yml.

Environment Variable

Description

DEBUG

The Django DEBUG setting. Defaults to False. See Tethys Portal Configuration

ALLOWED_HOSTS

The Django ALLOWED_HOSTS setting. Defaults to ""[localhost, 127.0.0.1]"". See Tethys Portal Configuration

BYPASS_TETHYS_HOME_PAGE

The home page of Tethys Portal redirects to the Apps Library when True. Defaults to False. See Tethys Portal Configuration

ADD_DJANGO_APPS

List of the DJANGO APPS in this format ""[App1, App2]"". Defaults to ""[]"" (Empty)

SESSION_WARN

Number of seconds in idle until the warning message of session expiration displayed. Defaults to "1500" (1500 seconds).

SESSION_EXPIRE

Number of seconds in idle until the session expired. Defaults to "1800" (1800 seconds).

QUOTA_HANDLERS

A list of Tethys ResourceQuotaHandler classes to load in this format ""[RQ1, RQ2]"". Defaults to ""[]"" (Empty). See RESOURCE_QUOTA_HANDLERS in Tethys Portal Configuration

DJANGO_ANALYTICAL

The Django Analytical configuration settings for enabling analytics services on the Tethys Portal in this format ""{CLICKY_SITE_ID:123}"". Defaults to ""{}}"" (Empty). Tethys Portal. See ANALYTICS_CONFIGS in Tethys Portal Configuration

ADD_BACKENDS

The Django AUTHENTICATION_BACKENDS setting in this format ""[Backend1, Backend2]"" Defaults to ""[]"" (Empty). See AUTHENTICATION_BACKENDS in Tethys Portal Configuration

OAUTH_OPTIONS

The OAuth options for Tethys Portal in this format ""{SOCIAL_AUTH_FACEBOOK_KEY:123}"" Defaults to ""{}}"" (Empty). Tethys Portal. See OATH_CONFIGS in Tethys Portal Configuration

CHANNEL_LAYERS_BACKEND

The Django Channel Layers backend. Default to "channels.layers.InMemoryChannelLayer"

CHANNEL_LAYERS_CONFIG

The Django Channel Layers configuration if a layer other than the default is being used. Defaults to ""{}}"" (Empty).

RECAPTCHA_PRIVATE_KEY

Private key for Google ReCaptcha. Required to enable ReCaptcha on the login screen. See RECAPTCHA_PRIVATE_KEY in Tethys Portal Configuration

RECAPTCHA_PUBLIC_KEY

Public key for Google ReCaptcha. Required to enable ReCaptcha on the login screen. See RECAPTCHA_PUBLIC_KEY in Tethys Portal Configuration

NGINX Settings

These settings are used to configure the NGINX process that is running inside the container.

Environment Variable

Description

CLIENT_MAX_BODY_SIZE

client_max_body_size parameter for nginx config. Defaults to 75M.

TETHYS_PORT

Internal port Tethys is hosted on. Defaults to "8000". Note: This port is only used inside the container by NGINX.

Daphne Settings

These settings are used to configure the Daphne processes that are running inside the container.

Environment Variable

Description

ASGI_PROCESSES

The maximum number of asgi worker processes. Defaults to 1.

Tethys Portal Site Settings

Environment variables can be set to customize the theme and content of the Tethys Portal. The environment variables are the same as the Portal Config Yaml Key for site settings (see Tethys Portal Configuration: Site Settings).

Run.sh

The primary entrypoint for the Tethys Platform container is the run.sh bash script. It performs the following tasks:

  • Checks and waits for the database to be ready

  • Applies Salt State files to initialize Tethys Portal and the apps

  • Sets file permissions

  • Starts supervisor

  • Shows the logs for supervisor, nginx and tethys

Run.sh also has these following optional arguments:

Argument

Description

--background

Run supervisord in background.

--skip-perm

Skip fixing permissions step.

--db-max-count

Number of attempt to connect to the database. Default is at 24.

--test

Only run salt scripts and exit.

For example, to run the run.sh script with one of the options, override the default command as follows:

sudo docker run -it tethysplatform/tethys-core /bin/bash -c ". run.sh --test"

Salt Scripts

Tethys uses Salt State files to perform runtime initialization of the container. The file, named top.sls, contains a list of state files to run and the order in which to run them. These files are pre_tethys.sls, tethyscore.sls and post_app.sls. You can override this file with your own top.sls file to insert additional salt state files for your app (see: Salt State Files).

Salt Script Description

pre_tethys.sls:

  • Create static workspace and root for tethys.

tethyscore.sls:

  • Generate tethys settings.

  • Generate NGINX service.

  • Generate ASGI service.

  • Prepare database for tethys.

post_app.sls:

  • Persist portal_config.yaml.

  • Persist workspace and static data of the app.

  • Persist and link NGINX and ASGI for the app.

Source Code