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The new merged database will replicate with both the IPA and CA trees, so all
DS instances (IPA and CA on the existing master, and the merged one on the
replica) need to have the same schema.
Dogtag does all its schema modifications online. Those are replicated normally.
The basic IPA schema, however, is delivered in ldif files, which are not
replicated. The files are not present on old CA DS instances. Any schema
update that references objects in these files will fail.
The whole 99user.ldif (i.e. changes introduced dynamically over LDAP) is
replicated as a blob. If we updated the old master's CA schema dynamically
during replica install, it would conflict with updates done during the
installation: the one with the lower CSN would get lost.
Dogtag's spawn script recently grew a new flag, 'pki_clone_replicate_schema'.
Turning it off tells Dogtag to create its schema in the clone, where the IPA
modifications are taking place, so that it is not overwritten by the IPA schema
on replication.
The patch solves the problems by:
- In __spawn_instance, turning off the pki_clone_replicate_schema flag.
- Providing a script to copy the IPA schema files to the CA DS instance.
The script needs to be copied to old masters and run there.
- At replica CA install, checking if the schema is updated, and failing if not.
The --skip-schema-check option is added to ipa-{replica,ca}-install to
override the check.
All pre-3.1 CA servers in a domain will have to have the script run on them to
avoid schema replication errors.
https://fedorahosted.org/freeipa/ticket/3213
IPA Server
What is it?
-----------
For efficiency, compliance and risk mitigation, organizations need to
centrally manage and correlate vital security information including:
* Identity (machine, user, virtual machines, groups, authentication
credentials)
* Policy (configuration settings, access control information)
* Audit (events, logs, analysis thereof)
Since these are not new problems. there exist many approaches and
products focused on addressing them. However, these tend to have the
following weaknesses:
* Focus on solving identity management across the enterprise has meant
less focus on policy and audit.
* Vendor focus on Web identity management problems has meant less well
developed solutions for central management of the Linux and Unix
world's vital security info. Organizations are forced to maintain
a hodgepodge of internal and proprietary solutions at high TCO.
* Proprietary security products don't easily provide access to the
vital security information they collect or manage. This makes it
difficult to synchronize and analyze effectively.
The Latest Version
------------------
Details of the latest version can be found on the IPA server project
page under <http://www.freeipa.org/>.
Documentation
-------------
The most up-to-date documentation can be found at
<http://freeipa.org/page/Documentation/>.
Quick Start
-----------
To get started quickly, start here:
<https://fedorahosted.org/freeipa/wiki/QuickStartGuide>
Licensing
---------
Please see the file called COPYING.
Contacts
--------
* If you want to be informed about new code releases, bug fixes,
security fixes, general news and information about the IPA server
subscribe to the freeipa-announce mailing list at
<https://www.redhat.com/mailman/listinfo/freeipa-interest/>.
* If you have a bug report please submit it at:
<https://bugzilla.redhat.com>
* If you want to participate in actively developing IPA please
subscribe to the freeipa-devel mailing list at
<https://www.redhat.com/mailman/listinfo/freeipa-devel/> or join
us in IRC at irc://irc.freenode.net/freeipa