Note: Prior to upgrading the webserver, it is strongly recommended to notify the users about the scheduled maintenance and urge them to close their sessions. All sessions will be removed during the upgrade.

  1. Prevent user interaction (if possible) - starting in v1.5.0 the Maintenance Mode option in the Admin Portal can be used for this purpose.
  2. Verify that there are no busy instances (no *.busy in the userSessionData) - starting in v1.5.0 the Instances Management panel in the Admin Portal can be used for this purpose.
  3. Stop the webserver.
  4. Remove the contents of the userSessionData directory.

Note: The Instances Management functionality in the Admin Portal is able to close and cleanup non-busy sessions and notify the back-end servers. When user session folders are deleted manually, artifacts may remain on the back-end server(s).

Upgrade Webserver

  1. Pull the new image from the Docker registry: docker pull.
  2. Start the docker container from the updated image.