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hi all,
I am building a load balanced compute cluster which due to problems with my
ATM (see lots of previous posts ;) I am now using a NAT cluster.
The cluster is up and running and seems to work fine.... However I have a
problem with NFS mounted home directories.
All the users that login to the cluster have their home directories served
via NFS from a couple of large SGI file servers.
All the nodes and the director run linux 2.2.16, and they use amd to mount
the home directories and software directories on login. The problem is due
to the security setup. Only specified netgroups, and some machines which
are exceptions, are allowed to mount anything from the file servers.
The director is allowed to mount, but when a node tries to mount the NFS
file server thinks that the request is coming from "<unknown>" which it
tries to match against a netgroup and fails... so you can't mount.
For now we have just added "<unknown>" to the list of allowed mounts (very
bad solution but this has to be up and running by monday). Has anybody come
across this before? and anybody got any ideas?
All suggestions welcome.
cheers,
Steve.
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