Unable to mount a specific NFS share on one client, resulting in an RPC error, but it works on another client

Solution Verified - Updated -

Issue

  • Unable to mount a specific NFS share on one client due to an RPC error, but it works on another client
  • Getting a mount error:
mount: mount to NFS server 'server' failed: RPC Error: Program not registered.
  • NFS server logs show:
portmap[27165]: connect from xxx.xxx.xxx.xxx to getport(nfs): request from unauthorized host

Environment

  • Red Hat Enterprise Linux 5

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