canaille-globuzma/doc/databases.rst

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Databases
#########
Canaille can read and save data in different databases.
This page presents the different database backends and their specificities:
.. contents::
:local:
Memory
======
Canaille comes with a lightweight inmemory backend by default.
It is used when no other backend has been configured, i.e. when the ``BACKENDS`` configuration parameter is unset or empty.
This backend is only for test purpose and should not be used in production environments.
SQL
===
Canaille can use any database supported by `SQLAlchemy <https://www.sqlalchemy.org/>`_, such as
sqlite, postgresql or mariadb.
It is used when the ``BACKENDS.SQL`` configuration parameter is defined. For instance::
[BACKENDS.SQL]
SQL_DATABASE_URI = "postgresql://user:password@localhost/database"
LDAP
====
Canaille can use OpenLDAP as its main database.
It is used when the ``BACKENDS.LDAP`` configuration parameter is defined. For instance::
[BACKENDS.LDAP]
URI = "ldap://ldap"
ROOT_DN = "dc=mydomain,dc=tld"
BIND_DN = "cn=admin,dc=mydomain,dc=tld"
BIND_PW = "very-secret-password"
USER_BASE = "ou=users,dc=mydomain,dc=tld"
USER_CLASS = "inetOrgPerson"
USER_FILTER = "(|(uid={{ login }})(mail={{ login }}))"
GROUP_BASE = "ou=groups,dc=mydomain,dc=tld"
.. note ::
Currently, only the ``inetOrgPerson`` and ``groupOfNames`` schemas have been tested.
If you want to use different schemas or LDAP servers, adaptations may be needed.
Patches are welcome.
OpenLDAP overlays integration
-----------------------------
Canaille can integrate with several OpenLDAP overlays:
memberof / refint
~~~~~~~~~~~~~~~~~
`memberof <https://www.openldap.org/doc/admin24/overlays.html#Reverse%20Group%20Membership%20Maintenance>`_
and `refint <https://www.openldap.org/doc/admin24/overlays.html#Referential Integrity>`_
overlays are needed for the Canaille group membership to work correctly.
Here is a configuration example compatible with canaille:
.. literalinclude :: ../demo/ldif/memberof-config.ldif
:language: ldif
:caption: memberof-config.ldif
.. literalinclude :: ../demo/ldif/refint-config.ldif
:language: ldif
:caption: refint-config.ldif
You can adapt and load those configuration files with:
.. code-block:: bash
# Adapt those commands according to your setup
sudo ldapadd -Q -H ldapi:/// -Y EXTERNAL -f memberof-config.ldif
sudo ldapadd -Q -H ldapi:/// -Y EXTERNAL -f refint-config.ldif
ppolicy
~~~~~~~
If the `ppolicy <https://www.ietf.org/archive/id/draft-behera-ldap-password-policy-11.html>`_ overlay is configured and the ``pwdEndTime`` attribute is available (since OpenLDAP 2.6), then account locking support will be enabled in canaille. To allow users to manage account expiration, they need to have a *write* permission on the ``lock_date`` attribute.
Here is a configuration example compatible with canaille:
.. literalinclude :: ../demo/ldif/ppolicy-config.ldif
:language: ldif
:caption: ppolicy-config.ldif
.. literalinclude :: ../demo/ldif/ppolicy.ldif
:language: ldif
:caption: ppolicy.ldif
You can adapt and load those configuration files with:
.. code-block:: bash
# Adapt those commands according to your setup
sudo ldapadd -Q -H ldapi:/// -Y EXTERNAL -f ppolicy-config.ldif
sudo ldapadd -Q -H ldapi:/// -Y EXTERNAL -f ppolicy.ldif