There is an HP service guard for Linux that HP have recently released, it may be worth looking specifically for the setup instructions for Linux. As it is a recent release there will be far fewer Linux documents compared to the HP-UX version so you will need to narrow your search.

you should have a "cmquerycl" command which will tell you if you have any issues with your configuration prior to trying to export that configuration to the second node which should be your first step in troubleshooting cluster problems.