If when trying to mount a remote directory using NFS you get this error:

[root@localhost ~]# mount -t nfs 192.168.245.21:/home/CloudNet /mnt

mount: wrong fs type, bad option, bad superblock on 192.168.245.21:/home/CloudNet,…

Then it means you are missing an important nfs package!  Run sudo yum install nfs-utils  and it should be fixed.