Hi,

SSSD is also using a memory cache, and you need to remove the files in /var/lib/sss/mc/ in order to clean it. Its lifetime and size can also be set in sssd.conf, please look for memcache_* in sssd.conf man page.

flo

On Fri, Jun 25, 2021 at 5:28 PM iulian roman via FreeIPA-users <freeipa-users@lists.fedorahosted.org> wrote:
Hello,

I tried for some time to understand how the cache invalidation works on the clients, and I have to admit that I am even more confused that when I started, therefore I would like to ask if there is someone who can either explain or point me to the relevant documentation.
I'll describe bellow the situation I am currently facing:

PHASE 1
 - RedHat Idm with AD trust configured (non-posix)
 - override the UID of AD users in Idm
 - on the clients run the id <username> ;  the correct (overwritten ) UID and an auto-generated GID is displayed

PHASE 2
- overwrite the GID as well on Idm
- on the clients still the old auto-generated GID is displayed (after sss_cache -E and restart of sssd) when I run id <username>
- remove everything in /var/lib/sss/db , restart sssd and run id <username> - no user found
- getent group <username> - new overwritten GID is displayed
- id <username> displays the correct UID and GID

For the users who are not in cache, restarting sssd seems to be enough (although I did not test if thoroughly).

My question is :
What do I have to do on the client in order to have the latest information from the Idm Override ? Apparently sss_cache -E and restart ssssd is not enough .
Do we always need to remove everything in /var/lib/sss/db in order to have the latest information from the server ?
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