Tethys Platform
Table Of Contents
Table Of Contents

Upgrade from Older Versions

Last Updated: July 2022

This document provides instructions for upgrading from versions of Tethys Platform prior to 3.4.

Upgrading 3.X Versions

Use these instructions to update Tethys 3.X installations to other versions of Tethys 3 (3.1, 3.2, 3.3, and 3.4). Tethys Platform has become much more stable as of version 3.0 and you shouldn't expect many major breaking changes between different minor versions (e.g. 3.1, 3.2, 3.3). In other words, apps that work in 3.0 should work in 3.1 without any changes. The following steps can be used as a general guide, but additional steps may be required for your specific installation.

Upgrade Steps

  1. Review the What's New documentation before attempting any upgrade, especially on production servers.

  2. Activate the tethys conda environment:

    conda activate tethys
  3. Update the Tethys Platform conda package and dependencies by installing the new version of Tethys Platform:

    conda install -c tethysplatform -c conda-forge tethys-platform=3.*
  4. Migrate the Tethys Platform database tables:

    tethys db migrate
  5. Make any changes to your apps if necessary. This should only be the case when upgrading between major versions (e.g. 3.0 to 4.0). See the What's New documentation for detailed notes on what changes occur in each release.


In previous versions of Tethys Platform it was required to backup the settings.py file before upgrading and then copy your custom settings from the backup to the new settings.py file after upgrading. As of version 3.0, this should no longer be the case. All custom settings should be defined in the portal_config.yml, which is preserved during upgrades. See: Tethys Portal Configuration for more details.

Additional Upgrade Steps for Production Installations

The following additional steps may be required for production server upgrades.

  1. Collect static files:

    tethys manage collectstatic
  2. Restart Daphne and NGINX servers:

    sudo supervisorctl restart all

Upgrading from 2.1 to 3.X

Many significant changes were made since Tethys Platform 2.1. Please note the following differences:

Source Code

Tethys in now a conda package! This means that when installing tethys you will no longer clone the source code into TETHYS_HOME. Now Tethys will be installed in your conda environment instead.


In 2.1 TETHYS_HOME by default was located at ~/tethys/. As of 3.0 TETHYS_HOME is now, by default at ~/.tethys/


If your tethys conda environment is named something other than tethys then TETHYS_HOME will be at ~/.tethys/<ENV_NAME>/. For example if your conda environment were named tethys-dev then TETHYS_HOME would be at ~/.tethys/tethys-dev/


In 2.1 custom settings were specified directly in the settings.py file. Now settings must be configured in the portal_config.yml file which is generated in TETHYS_HOME

Upgrade Steps

  1. Activate Tethys environment uninstall the previous version of tethys-platform:

    conda activate tethys
    pip uninstall tethys-platform
  2. Install the new conda packaged version of tethys-platform:

    conda install -c tethysplatform -c conda-forge tethys-platform
  3. Rename ~/tethys/ to ~/.tethys/:

    mv ~/tethys ~/.tethys
  4. Generate a portal_config.yml file:

    tethys gen portal_config
  5. Port any custom settings from your old settings.py to the new portal_config.yml:

    Common settings that need to be copied include:
    • DEBUG







    Refer to Tethys Portal Configuration for more details on specifying settings in the portal_config.yml file.

  6. Migrate the database:

    If you have a locally installed database then you will need to add a DIR setting in the DATABASES setting of the portal_config.yml file:
        NAME: tethys_platform
        USER: tethys_default
        PASSWORD: pass
        HOST: localhost
        PORT: 5436
        DIR: psql


    The DIR setting is relative to TETHYS_HOME. By default the locally installed database would have been at ~/tethys/psql/, but now that TETHYS_HOME has moved the default location is ~/.tethys/psql/.


    If you have a locally installed database server then you need to downgrade postgresql to the version that the database was created with.

    conda install -c conda-forge postgresql=9.5
    Once you have the database settings and dependencies configured properly then you can migrate the database by running:
    tethys db migrate


    Refer to the db command docs for more information on how to use the new tethys db command.