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Re: NFSv4 without Kerberos and permissions

perhaps value defaults of nfs in ubuntu and debian are different  and perhaps nfs versions are different and any of these paremeters aren't recognized in the host client.

2017-10-14 21:28 GMT+02:00 John Ratliff <john@bluemarble.net>:
I recently set up an NFS v4 server on debian stretch. If I use a debian client to mount the share, everything works fine. However, if I use a CentOS or a Ubuntu client, the permissions don't work.

I have synchronized the group ids manually, and that's the only permissions I'm interested in.

I have a directory structure like this:


/export/ssl/wildcard is chmod 2750 with root:ssl-cert as its owner.
root user is uid 0, ssl-cert is gid 555.

My exports file looks like this:


There is no firewall on the server. iptables is wide open. Server is and client is hosts.allow has ALL:ALL on the last line.

I have no trouble mounting the share on the client. But a member of the ssl-cert group (again, it IS GID 555 -- I made the group manually to ensure this) CANNOT enter the directory. They cannot read files in the directory. They cannot do anything with the share.

I have this trouble with Ubuntu 14.04, Ubuntu 16.04, and CentOS 7. I do not have any issues with Debian 8 or Debian 9 clients.

/etc/default/nfs-common has

/etc/default/nfs-kernel-server is stock; no changes.

I have this problem with NFSv4 servers on Debian 8 and Debian 9.

If I run the NFS server on Ubuntu 16.04, I can access it fine from Ubuntu clients and CentOS clients, but Debian clients have the same problem.

What am I missing? What can I do to further troubleshoot this? Is there any way to determine what mapping it THINKS is occurring?


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