Some time we got this NFS related error  :-

NFS error mount clntudp_create RPC Program not registered

root@amitmaheshwari.in:~# showmount -a
mount clntudp_create: RPC: Program not registered

This error occurred due to following reasons :-

1) rpc.mountd service is stopped on NFS server
2) firewall  or some network issue while connecting from client to NFS server.
3) Also check "/etc/hosts.allow & /etc/hosts.deny" file to check if any rule mention for NFS or  Network.

Root cause of this erorr is :-
This error occurs when the rpc.mountd service is not running or a firewall or tcp-wrappers is blocking the service from communicating on the network.

Possible Solution :-

Check on NFS server side

1) start nfs service
    # service nfs restart

2) rpcinfo -p localhost  

In output check for mountd should be listening on some port 


Now check on Client side

1) Check nfslock and portmap  services  (RHEL-4 )
2) Check nfslock / rpcbind services (RHEL-6 and above)

RHEL-4
# service nfslock restart
# service nfslock status

# service portmap  restart
# service portmap status

RHEL-6 and above
# service nfslock restart
# service nfslock status

# service rpcbind  restart
# service rpcbind  status


# rpcinfo -p NFS.Server  or  it's IP address (xxx.xxx.xxx.xxx)

# showmount -e 

you will see NFS shared  devices

 # service netfs status

I hope this will give you an idea about  "NFS error mount clntudp_create RPC Program not registered"  error.


 
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Maintained By Amit Maheshwari