Dell Storage Manager 2020 R1 Administrator's Guide

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NFS Mount Fails Due to Netgroup Failure


Description	This event is issued when a 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 FluidFS cluster and the NIS/LDAP server. It can be a result of a network issue, directory server overload, or a software malfunction.
Workaround	Repeat the below process for each configured NIS/LDAP server, each time leaving just a single NIS/LDAP used, starting with the problematic server. Inspect the NIS/LDAP server logs and see whether the reason for the error is reported in the logs. Network tests: Try pinging the FluidFS cluster from a client located in the same subnet as the NIS/LDAP server. Try pinging the NIS/LDAP server from a client located in the same subnet as the FluidFS cluster. If packet loss is evident on one of the above network tests, resolve the network issues in the environment. Using a Linux client located in the same subnet as the FluidFS cluster 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 work around the problem by removing the netgroup restriction on the NFS export and/or by defining an alternative directory server. Identify the relevant NFS 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.