On Wed, Jan 31, 2024 at 2:46 PM Kodiak Firesmith firesmith@protonmail.com wrote:
Ah yes - I can't believe I didn't do that first before messing with debugging and posting to the list. Absolutely fixed my issue.
I wasn't fully clear on the note about removing support of handling local users so I dug up commit 3e94b64 and have it on my list of things to read through.
No, that's different - https://github.com/SSSD/sssd/releases/tag/2.9.0 : ``` "Files provider" (i.e. id_provider = files) is deprecated and might be removed in further releases. Those who are interested to keep using it awhile should configure its build explicitly using --with-files-provider ./configure option. Or consider using "Proxy provider" with proxy_lib_name = files instead. ``` And then https://fedoraproject.org/wiki/Changes/SSSDRemoveFilesProvider
Like so many important things, Ubuntu lags pretty hard on SSSD in comparison to RHEL, but I have to assume we'll see the removal down the line sooner or later.
Thanks again for all the help, I'm down to one final SSSD related problem to investigate. If I relent I'll probably post a question about socket activated vs service based responders for pac and nss.
IIRC, there was an issue that PAC responder is enabled implicitly for IPA/AD domains, and Debian/Ubuntu also had socket activation enabled by default. (see 'man sssd.conf::implicit_pac_responder')
- Kodiak
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On Wednesday, January 31st, 2024 at 3:27 AM, Alexey Tikhonov < atikhono@redhat.com> wrote:
Hi,
On Tue, Jan 30, 2024 at 11:22 PM Kodiak Firesmith < firesmith@protonmail.com> wrote:
Hello, I've begun to see the oddest thing within our AD environment on Linux clients (Ubuntu 20, 22).
During logins I see "groups: cannot find name for group ID".
Then during various operations (eg when installing a package that has scripts that create local users, such as postgresql) I see a few of the same userIDs listed as terminal output like this:
Couldn't invalidate user jim.bob@domain.college.edu Couldn't invalidate user sally.sue@domain.college.edu Couldn't invalidate user joe.nobody@domain.college.edu
Reading through what little comes up in Google for 'Couldn't invalidate user' + sssd, I found old bugs about not being able to invalidate groups in the sss_cache. That got me far enough to have a repeatable action to force this output:
# sss_cache -UG Couldn't invalidate user jim.bob@domain.college.edu Couldn't invalidate user sally.sue@domain.college.edu Couldn't invalidate user joe.nobody@domain.college.edu
Looks like the cache got into an inconsistent state. Try to delete cache altogether: stop SSSD; rm -rf /var/lib/sss/db/* (or make a backup if you'd like to); start SSSD
Btw, SSSD shipped in recent Fedora is built without support of handling local users and for this reason shadow-utils doesn't execute 'sss_cache' when manipulating local users. Ubuntu should do the same.
I've tried ramping up debugging on my AD domain entry in sssd.conf to 9 but I'm not seeing anything that jumps out.
Any ideas?
Thanks!
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