1. Completing the Configuration of Collabora Online

• First, you need a running File Sync and Share solution like EGroupware, Nextcloud or ownCloud (all are available in Univention App Center).
• Next, you need to install the Collabora Plugin in your File Sync and Share solution (see below for more information).
• Then you can give https://FQDN_OF_THIS_SERVER without a port number as the WOPI URL in your preferred File Sync and Share solution.
• Please make sure the File Sync solution has access to the Root CA of the UCS domain (see below for more detailed information).
• Use the FQDN of the File Sync server when accessing the File Sync solution.
• Make sure your browser can resolve the FQDN of the File Sync and Collabora Online server.
• Accept the certificate of the Collabora server in your browser if the browser requests accordingly. UCS creates his own certificate authority.
• The administrator console can be found here: /loleaflet/dist/admin/admin.html (HTTPS only).

2. Support Key

Collabora Online requires a support key for production use. After you have purchased one, you receive a support key. To upload and activate it, follow these steps:

• Go to the App Settings below.
• Upload the key file via the respective upload dialog.
• Stop the application at the top of the app settings.
• Start the application again at the top of the app settings.

3. Integrations

3.1. EGroupware

• Goto the App Center, select EGroupware and install it.
• Login in EGroupware with an Admin-Account of EGroupware
• Go to Admin → Applications → Collabora → Site configuration
• Insert the URL for the Collabora server e.g. https://FQDN_OF_THIS_SERVER
• There are happening additional checks for the user "anonymous", which is required for Collabora and file sharing 
• Next step is to set permissions for groups, which should be able to use Collabora Online.  Either edit the User group or use context menu on the user group → Access control and add checkmark for Collabora . So Admin can decide who is able to use Collabora in EGroupware.

3.2. Nextcloud

• Goto the App Center, select Nextcloud and install it.
• Add the UCS root CA to the Nextcloud App. Run the following command as root user on your Nextcloud UCS server:

  cat /etc/univention/ssl/ucsCA/CAcert.pem | \
  docker exec -i "$(ucr get appcenter/apps/nextcloud/container)" \
  bash -c 'cat >> var/www/html/resources/config/ca-bundle.crt'	
  		

• Install the Collabora Online App in Nextcloud.
1. Login to Nextcloud as user Administrator.
2. Goto Apps → Office & Text → [Enable] Collabora Online
3. Goto Admin → Collabora Online for Collabora specific settings

3.3. ownCloud

• Goto the App Center, select ownCloud and install it.
• Add the UCS root CA to the ownCloud App. Run the following command as root user on your ownCloud UCS server:

  cat /etc/univention/ssl/ucsCA/CAcert.pem | \
  docker exec -i "$(ucr get appcenter/apps/owncloud/container)" \
  bash -c 'cat >> /var/www/owncloud/resources/config/ca-bundle.crt'
  		

• Install the Collabora Online App in ownCloud.
1. Login to ownCloud as admin user (username owncloud).
2. Goto Market → Integration → Collabora Online → [Install]
3. Goto Settings → Admin Apps → Show disabled Apps → [Enable] Collabora Online
4. Settings → Admin → Additional for Collabora specific settings

Community Support

Depending on the file, sync and share application, please use the appropriate forums for seeking community help:

• EGroupware
• Nextcloud
• ownCloud