RAC & Failsafe :: Unable To Configure SSH For RAC

I am trying to install oracle 10g RAC on CentOS release 5.4 (Final), But when I am not able to configure SSH between oracle users on both node.

Node 1
--------
[oracle@node1 ~]$ id
uid=600(oracle) gid=500(oinstall) groups=500(oinstall),501(dba)
[oracle@node1 ~]$ date
Thu Dec 30 05:14:10 IST 2010
[oracle@node1 ~]$
------------
Node2
----------
[oracle@node2 ~]$ id
uid=600(oracle) gid=500(oinstall) groups=500(oinstall),501(dba)
[oracle@node2 ~]$ date
Thu Dec 30 05:15:32 IST 2010
[oracle@node2 ~]$
---------
OS
----------
[oracle@node2 .ssh]$ cat /etc/redhat-release
CentOS release 5.4 (Final)
[oracle@node2 .ssh]$ date
---------
Host for both node
--------
[oracle@node2 .ssh]$ cat /etc/hosts
# Do not remove the following line, or various programs
# that require network functionality will fail.
127.0.0.1 localhost.localdomain localhost
# Public
10.1.1.10 node1
10.1.1.11 node2
#Private
20.1.1.10 node1-priv
20.1.1.11 node2-priv
#Virtual
10.1.1.21 node1-vip
10.1.1.22 node2-vip
------------------------
I am using the command to configure SSH provide in the link

[URL].......