Just updated this system to kernel-3.15.6-200 and the NFS exported home directory on it all of a sudden can't be mounted from any other system on my network. Rebooted to the previous 3.15.5-200 kernel and it's back to normal. We have some legacy stuff using NIS and automounted directories, mostly SciLinux 6.5 stuff.
Log entry: Jul 21 07:32:15 <hostname> rpc.mountd[16359]: refused mount request from <ipaddress> for /export/home (/export/home): unmatched host
I looked at /etc/exports, /etc/resolv.conf, /etc/nsswitch.conf, nothing seemed out of place and since it's working in the previous kernel I suspect something in the new kernel is causing the issue. Nothing else that got updated this morning seems to be a likely cause.
Running a "getent netgroup <netgroup_name>" gave me the expected results which included the system trying to mount the shared directory.
Just curious if anyone else sees similar issues with the latest kernel.
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Stephen Berg (Contractor)