The playbook can install and configure matrix-synapse-rest-auth for you.
See that project's documentation to learn what it does and why it might be useful to you.
Add the following configuration to your inventory/host_vars/matrix.example.com/vars.yml
file (adapt to your needs):
matrix_synapse_ext_password_provider_rest_auth_enabled: true
matrix_synapse_ext_password_provider_rest_auth_endpoint: "http://matrix-ma1sd:8090"
matrix_synapse_ext_password_provider_rest_auth_registration_enforce_lowercase: false
matrix_synapse_ext_password_provider_rest_auth_registration_profile_name_autofill: true
matrix_synapse_ext_password_provider_rest_auth_login_profile_name_autofill: false
If you wish for users to authenticate only against configured password providers (like this one), without consulting Synapse's local database, feel free to disable it:
matrix_synapse_password_config_localdb_enabled: false
After configuring the playbook, run the installation command: just install-all
or just setup-all