Submit PBS job from ng2

In my configuration there are 3 boxes: ng2, bestgrid-02 (pbs-server), bestgrid-01 (node). Submitting of PBS jobs requires following issues:

1. All three boxes have to have common folder for user which has been used as a grid user. In my case it's grid-user. I've exported /home/grid-user from bestgrid-02 and mounted it to ng2 and bestgrid-01 into the same folder;
   
2. Ideally that should be whole /home folder exported from another box (i.e. data.bestgrid.org) and mounted on all boxes in a chain ng2->pbs-server->nodes;
3. grid-user has to have passwordless access between all boxes in the chain;
4. In /home/grid-user/.ssh/known_hosts records for all boxes should be existed for short and long names;
5. All boxes should be in /etc/hosts of each box.