The NFS version in centos and Debian is incompatible.

Debian version

View CAT/etc/debian_version

Debian supports vers = 4 by default, but earlier centos versions support vers = 3 by default. Therefore, the following message is displayed when NFS is mounted:

NFS: Bad mount option value specified: vers = 4
Mount. NFS: an incorrect mount option was specifiedt

Solution:

This is because Linux and solaris10 use different versions of NFS. By default, solaris10 uses nfs4, which causes compatibility between Solaris NFS and Linux NFS, you can add the "-O vers = 3", nfsvers = 3, and vers = 3 parameters.

For example, running on the client:

# Mount-T nfs192.168.0.100:/nfsroot/mnt-O vers = 3

Note:

1.192.168.0.100 is the Server IP adress

OK

2. exportfs-R: Reload the NFS configuration file (/etc/exports)