I understand sssd is failing to start because there is no config, but I'm trying to understand the bad interaction of automounts with sssd, which would be via /etc/nsswitch.conf.
(Brainstorming below, pardon me if this is all obvious to you) autofs will consult /etc/nsswitch.conf when a map file has no path, i.e., is not really a file. Something like this in /etc/auto.master: /mnt auto.mnt Since it's "auto.mnt" and not, say, "/etc/auto.mnt", /etc/nsswitch.conf is consulted. That is exactly the case that was reported in this bug. Recaping: """ >From /etc/auto.master: /mnt/GGData auto.DataVol1 --ghost """ I'm not sure what is the fallback when NSS returns "sorry, no such thing here". Does autofs assumes a file, with a certain path? Let's find out. ... Ok, it fails miserably. But if I remove "automount: sss" from /etc/nsswitch.conf, and leave the map without an absolute path, then autofs works. I see two options here: a) /etc/nsswitch.conf change a) Add files: automount: sss files Also files could be first. Some experimentation and thought required here. We can also play with flags, like: automount: sss [NOTFOUND=continue] files The nsswitch.conf(5) manpage documents these. A quick check in our default nsswitch.conf file shows we (debian/ubuntu) do not use these flags. I seem to remember that Redhat/Fedora used to play a lot with the flags. b) use a path in auto.master. In other words, change your /etc/auto.master entry to: /mnt/GGData /etc/auto.DataVol1 --ghost Or wherever auto.DataVol1 exists. I have a feeling your setup was relying on this fallback to assuming the location of the auto.DataVol1 file. strace shows autofs assumes /etc in this case, as the path for the file: 4263 connect(9, {sa_family=AF_UNIX, sun_path="/var/lib/sss/pipes/autofs"}, 110) = -1 ENOENT (No such file or directory) 4263 close(9) = 0 4263 write(2, "setautomntent: lookup(sss): setautomntent: No such file or directory", 68) = 68 4263 write(2, "\n", 1) = 1 4263 write(2, "lookup_nss_read_map: reading map files auto.mnt", 47) = 47 4263 write(2, "\n", 1) = 1 4263 stat("/etc/auto.mnt", {st_mode=S_IFREG|0644, st_size=330, ...}) = 0 So, here is my take: I believe your configuration needs to be fixed, because using a map file without a path in /etc/auto.master is documented as doing an nsswitch lookup, which is what broke when libnss-sss was installed (due to the entry it adds to /etc/nsswitch.fong). -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1897153 Title: Automount fails due to SSSD config (Groovy Gorilla) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-release-notes/+bug/1897153/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs