Oracheck does not execute the scritps in the second node of the RAC

Error Code:

 

Warning: Permanently added 'rac2,192.168.0.91' (RSA) to the list of known hosts.

sh: test: argument expected

sh: test: argument expected

*************

I Have added in both nodes the following line "oracle ALL=(root) NOPASSWD:$HOME/root_orachk.sh" in "/usr/local/etc/sudoers"

********

The connection for "ssh" between the nodes with "root" not this allowed

# ssh rac2

Password:

Password:

Password:

Permission denied (gssapi-keyex,gssapi-with-mic,publickey,keyboard-interactive).

*************

Have I to modify "/etc/ssh/sshd_config" and put "PermitRootLogin" as "YES"?

Regards

Roberto.