Configuring VCS in secure mode ensures that all the communication between the systems is encrypted and users are verified against security credentials. VCS user names and passwords are not used when a cluster is running in secure mode.
To configure VCS in secure mode
# ./installer -security
Do you want to grant read access to everyone? [y,n,q,?]
Do you want to provide any usergroups that you would like to grant read access?[y,n,q,?]
Enter the usergroup names separated by spaces that you would like to grant read access. If you would like to grant read access to a usergroup on a specific node, enter like 'usrgrp1@node1', and if you would like to grant read access to usergroup on any cluster node, enter like 'usrgrp1'. If some usergroups are not created yet, create the usergroups after configuration if needed. [b]
# haclus -value SecureClus
The command returns 1 if cluster is in secure mode, else returns 0.