NFS Mount Error: Mount.nfs:access denied by server while mounting

This problem is that the server does not allow the client to mount, then modify the service side of the permissions

$ sudo vi   

Add text at the end

# # NFS DAEMONSPORTMAP:ALLLOCKD:     allmountd:   allrquotad:allstatd:     All

Configure Hosts.allow

$ sudo vi/etc/hosts.allow

Add text at the end

192.168.  the . LOCKD:      192.168.  the  192.168.  the . Mountd:    192.168.  the . STATD:       192.168. .

Restart the NFS server after the modification is complete

/etc/init.d/nfs-kernel-server restart

Native Test Mounts

192.168. 89.102:/mnt/nfs//mnt/

NFS Mount Error: Mount.nfs:access denied by server while mounting