[Samba] Winbind, cached logons and 'user persistency'...
rpenny at samba.org
Mon Feb 11 14:03:06 UTC 2019
On Mon, 11 Feb 2019 14:47:01 +0100
Marco Gaiarin via samba <samba at lists.samba.org> wrote:
> Sorry. Still on this issue.
> Today i'm upgrading my DC (with latest 4.5 from louis repo). Note that
> i've 7 DC in total.
> In site 'PP' i've upgraded samba, then rebooted the container. reboot
> on 'vdcpp2' happen on:
> Feb 11 13:59:52 vdcpp2 shutdown: shutting down for system
> at '14:00:30' bind, ntp and (i suppose) samba was stared.
> After that, i've upgraded and rebooted the second DC in that site
> (really, the first ;):
> Feb 11 14:03:09 vdcpp1 shutdown: shutting down for system
> again, for 14:04:00 was up&runing.
> But the mail server refuse to deliver messages, fortunately all admin
> messages to an admin users (was loop: messages undeliverability
> errors, email go to postmaster, so to admin, so error, ...).
> 2019-02-11 14:02:34 1gtBEG-0006lw-Qm ** admin123 at fvg.lnf.it
> F=<root at pp.lnf.it>: Unrouteable address 2019-02-11 14:02:35
> 1gtBEI-0006nz-CH ** admin123 at fvg.lnf.it F=<root at sv.lnf.it>:
> Unrouteable address 2019-02-11 14:02:38 1gtBEL-0006pl-P3 **
> admin123 at fvg.lnf.it F=<>: Unrouteable address [...] 2019-02-11
> 14:05:18 1gtBGv-0007IA-QR ** admin123 at fvg.lnf.it F=<>: Unrouteable
> address 2019-02-11 14:05:18 1gtBGv-0007I9-Sf ** admin123 at fvg.lnf.it
> F=<>: Unrouteable address
> So again seems to me that, even if there was at least a DC on the site
> active (and, indeed there's other 5 DCs offsite!)
> stopping/disconnecting the dc ''make users desappearming'' from at
> least exim.
> I need to setup a testbed...
It sounds to me that 'exim' is using LDAP for its lookups and is NOT
using any cache (winbind or otherwise). So when the LDAP source goes
away, so do your users.
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