Setting up Synapse Admin (optional)

The playbook can install and configure etkecc/synapse-admin (a feature-rich fork of Awesome-Technologies/synapse-admin, community room: #synapse-admin:etke.cc) for you.

synapse-admin is a web UI tool you can use to administrate users, rooms, media, etc. on your Matrix server. It's designed to work with the Synapse homeserver implementation and WON'T work with Dendrite because Dendrite Admin API differs from Synapse Admin API.

💡 Note: the latest version of synapse-admin is hosted by etke.cc at admin.etke.cc. If you only need this service occasionally and trust giving your admin credentials to a 3rd party Single Page Application, you can consider using it from there and avoiding the (small) overhead of self-hosting.

Adjusting the playbook configuration

To enable Synapse Admin, add the following configuration to your inventory/host_vars/matrix.example.com/vars.yml file:

matrix_synapse_admin_enabled: true

Note: Synapse Admin requires Synapse's Admin APIs to function. Access to them is restricted with a valid access token, so exposing them publicly should not be a real security concern. Still, for additional security, we normally leave them unexposed, following official Synapse reverse-proxying recommendations. Because Synapse Admin needs these APIs to function, when installing Synapse Admin, the playbook automatically exposes the Synapse Admin API publicly for you. Depending on the homeserver implementation you're using (Synapse, Dendrite), this is equivalent to:

for Synapse (our default homeserver implementation): matrix_synapse_container_labels_public_client_synapse_admin_api_enabled: true
for Dendrite: matrix_dendrite_container_labels_public_client_synapse_admin_api_enabled: true

By default, synapse-admin installation will be restricted to only work with one homeserver - the one managed by the playbook. To adjust these restrictions, tweak the matrix_synapse_admin_config_restrictBaseUrl variable.

⚠ Warning: If you're using Matrix Authentication Service (MAS) for authentication, you will be able to log into synapse-admin with an access token, but certain synapse-admin features (especially those around user management) will be limited or not work at all.

Adjusting the Synapse Admin URL

By default, this playbook installs Synapse Admin on the matrix. subdomain, at the /synapse-admin path (https://matrix.example.com/synapse-admin). This makes it easy to install it, because it doesn't require additional DNS records to be set up. If that's okay, you can skip this section.

By tweaking the matrix_synapse_admin_hostname and matrix_synapse_admin_path_prefix variables, you can easily make the service available at a different hostname and/or path than the default one.

Example additional configuration for your inventory/host_vars/matrix.example.com/vars.yml file:

# Change the default hostname and path prefix
matrix_synapse_admin_hostname: admin.example.com
matrix_synapse_admin_path_prefix: /

Adjusting DNS records

If you've changed the default hostname, you may need to adjust your DNS records to point the Synapse Admin domain to the Matrix server.

See Configuring DNS for details about DNS changes.

If you've decided to use the default hostname, you won't need to do any extra DNS configuration.

Installing

After configuring the playbook and potentially adjusting your DNS records, run the installation command:

Usage

After installation, Synapse Admin will be accessible at: https://matrix.example.com/synapse-admin/

To use Synapse Admin, you need to have registered at least one administrator account on your server.

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