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166 Troubleshooting
NFS Mount Fails Due to Netgroup Failure
Description This event is issued when client fails to mount an NFS export
because the required netgroup information cannot be attained.
Cause This error is usually the outcome of a communication error between
the NAS system and the NIS/LDAP server. It can be a result of
network issue, directory server overload, or a software malfunction.
Workaround Repeat the below process for each configured NIS server, each time
leaving just a single NIS used, starting with the problematic
NIS server.
1
Inspect the NIS/LDAP server logs and see if the reason for the
error is reported in the logs.
2
Network test:
a
Try pinging the NAS from a client located in the same subnet as
the NIS/LDAP server.
b
Try pinging the NIS/LDAP server from a client located in the
same subnet as the NAS.
If a packet loss is evident on one of the above, resolve the network
issues in the environment.
3
Using a Linux client located in the same subnet as the NAS and
configured to use the same directory server, query the netgroup
details from the NIS/LDAP server using the relevant commands.
Ensure that the reply is received in a timely manner (up to 3
seconds).
You can temporarily workaround the problem by removing the
netgroup restriction on the export and/or by defining an alternative
directory server.
Identify the relevant export and the options defined for it, while
focusing on the netgroup definition. Document the used netgroup
in order to restore it once the issue is solved and remove the
netgroup limitation.