The SSSD team has published an SSSD Internals Document, which can be found at
https://fedorahosted.org/sssd/wiki/InternalsDocs. If there are any mistakes in the
document, feel free to modify the document.
From the Introduction to the document:
"
The purpose of this document is to give a basic description of the internals of the SSSD
implementation. The material in this document is accurate as of SSSD 1.10. It is assumed
that the reader is already familiar with the external usage of SSSD. The intended audience
of this document are new contributors to the SSSD project. This document is not intended
to be comprehensive. For additional details on specific features, please refer to the
various Design Documents. This document does not discuss the details of building,
installing, and debugging SSSD. More information on these topics can be found in the
Developer Pages, and the Documentation. To be most useful, this document should be
updated as appropriate, and reviewed at regular intervals.
In order to better understand the material and make things more concrete, this document
starts by describing a specific use case (and configuration) that will be discussed
throughout the document. The document starts with a high level end-to-end overview, and
then deep-dives into detailed descriptions. The document is organized into the following
sections:
Active Directory Use Case: specifies use case used throughout the document
System Overview: end-to-end SSSD overview, including short descriptions of components
Advanced Topics: offline operation, multiple domains, trust relationships
SSSD Wrappers: SBus, SDAP
Common Data Structures: data structures used by each SSSD process
Component Details: gory details of each component
Appendix: tevent, function descriptions, filesystem locations, helpful links
"
Regards,
Yassir.