[Samba] unable to Kerberos NFS mount after machine off overnight
Jason Keltz
jas at eecs.yorku.ca
Wed Jul 21 17:16:16 UTC 2021
Hi.
I have many Linux clients running winbind from Samba 4.13.10 joined to
our Samba 4.13.10 AD server, and mounting using Kerberos from multiple
NFS servers. If a machine stays on all the time, everything works
fine. If the machine is rebooted, everything also works as expected.
On the other hand, if the machine is turned off, say overnight, then
when it is turned back on in the morning, the machine gets a "permission
denied" for all NFS mounts. I believe the machine is still joined to
the domain. For example, I can successfully "getent passwd <user>". I
can "kinit <user>". Everything works fine but NFS! If I re-join the
domain, then I can mount NFS shares from this machine right away without
even a reboot. I imagine there's some kind of "check in" timeout that
is being exceeded. If so, how often does this happen, and can I make it
happen less frequently?
Thanks!
Jason.
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