I have been working on trying to setup an NFS server, but my clients
cannot access the files after mounting.
It seems to be a problem with group permissions, but I can't figure out why.
My server is a debian 9 machine with kernel 4.9.51. If I use a debian
client, either Debian 8 or Debian 9, everything works fine. However, if
I try with an Ubuntu 14.04, 16.04, or CentOS 7 client, they cannot
access the files.
My directory on the server has permissions 2750. It is owned by root
with ssl-cert as the group. The ssl-cert group ID is 555. I have made
sure that same group is on all the client machines and has the same ID
of 555. The users I am trying to have access the files are members of
this group. Yet I keep getting permission denied.
I have turned off the firewall (both on server and client). I have put
ALL:ALL in /etc/hosts.allow. The machines are in the same subnet. They
can ping one another and can SSH freely between them.
I have tried NFS v3 and NFS v4, but this doesn't matter.
This is my /etc/exports
/etc/ssl/wildcard.smithville.com 192.168.1.0/24(rw,sync,no_subtree_check)
I've tried making the Ubuntu 16.04 machine the server and the Debian
machine the client, but I have the same problem (but Ubuntu to Ubuntu is
fine, and Ubuntu server to CentOS 7 client works).
I'm not sure how to further troubleshoot.
Thanks for any suggestions.
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