[SSSD] [PATCH] MAN: Clarify that changing ID mapping options might require purging the cache

Jakub Hrozek jhrozek at redhat.com
Wed Feb 26 15:15:30 UTC 2014


On Tue, Feb 25, 2014 at 08:53:45PM +0100, Jakub Hrozek wrote:
> On Tue, Feb 25, 2014 at 08:39:26PM +0100, Jakub Hrozek wrote:
> > On Tue, Feb 25, 2014 at 11:58:41AM -0500, Dmitri Pal wrote:
> > > On 02/25/2014 11:11 AM, Jakub Hrozek wrote:
> > > >Hi,
> > > >
> > > >the attached patch addresses #2252. I tried to make it clear that
> > > >removing the cache should only be done while online, but I'm open to any
> > > >further suggestions.
> > > >
> > > >
> > > >_______________________________________________
> > > >sssd-devel mailing list
> > > >sssd-devel at lists.fedorahosted.org
> > > >https://lists.fedorahosted.org/mailman/listinfo/sssd-devel
> > > 
> > > +        Please note that changing the ID mapping related configuration
> > > +        options might cause --->the<---- user and group IDs to change. At the moment,
> > > +        SSSD does not support changing IDs, so the SSSD database must be
> > > +        removed. Because cached passwords are also stored in the database,
> > > +        removing the database should only be performed while the SSSD
> > > +        is online, otherwise users might get locked out.
> > > 
> > > I do not think you need "the" in this case.
> > 
> > Thank you, a new patch is attached. I'm constantly struggling with using
> > articles as Czech has no such concept :)
> 
> Sorry, I attached the original patch again by accident.

During an IRC discussion, Stephen suggested to use a bit stronger language
(will instead of might) and to stress out that changing IDs is not a
good idea as file ownership needs to be fixed as well.

A new patch is attached.
-------------- next part --------------
>From d27dcb79d19076580ee689d2cd42c0bb2f9fe905 Mon Sep 17 00:00:00 2001
From: Jakub Hrozek <jhrozek at redhat.com>
Date: Tue, 25 Feb 2014 17:09:00 +0100
Subject: [PATCH] MAN: Clarify that changing ID mapping options might require
 purging the cache

https://fedorahosted.org/sssd/ticket/2252

Currently SSSD chokes when IDs of users change, we don't support ID
changes yet. Because some users were confused about the failures, this
patch adds additional clarification.
---
 src/man/include/ldap_id_mapping.xml | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/src/man/include/ldap_id_mapping.xml b/src/man/include/ldap_id_mapping.xml
index 9dda399243bfd1725509c239d3358f2ef7501014..a10dcd52a1687c4d97211ebdabc77095bbfccf5a 100644
--- a/src/man/include/ldap_id_mapping.xml
+++ b/src/man/include/ldap_id_mapping.xml
@@ -12,6 +12,17 @@
         need to use manually-assigned values, ALL values must be
         manually-assigned.
     </para>
+    <para>
+        Please note that changing the ID mapping related configuration
+        options will cause user and group IDs to change. At the moment,
+        SSSD does not support changing IDs, so the SSSD database must be
+        removed. Because cached passwords are also stored in the database,
+        removing the database should only be performed while the SSSD
+        is online, otherwise users might get locked out. Moreover, the
+        change of IDs might neccessitate to adjust other system properties
+        such as file and directory ownership, so it's advisable to plan
+        ahead and test the ID mapping configuration thoroughly.
+    </para>
 
     <refsect2 id='idmap_algorithm'>
         <title>Mapping Algorithm</title>
-- 
1.8.5.3



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