Horde App Migration

Starting with version 5.2.7-3 the Horde App for UCS is available as Docker App. New installations automatically using this Docker App.

To update an existing non-Docker Horde App to the new Docker Horde App a manual migration has to be done. Basically, Horde on the server (Docker host) is removed and installed in a new Docker container. Directories with horde data are mapped to the container and the container continues to use the database on the Docker host.

• Save horde UCR settings, prepare horde App removal

  ucr search --brief ^horde > /opt/horde-settings.txt
  cp -rf /etc/horde /opt/horde-conf
  apt-mark manual univention-mail-server
  apt-mark manual univention-postgresql

• Remove horde app

  univention-app remove horde
  ucr unset appcenter/prudence/docker/horde

• Install horde docker app

  univention-app update
  univention-app register
  univention-app install horde

• Verify horde UCS settings in Docker container

  univention-app shell horde ucr search --brief horde

To change into the container the command

univention-app shell horde

can be used. Here, custom configurations to /etc/horde can be added modifications of UCR settings