Rocks: Compute Node failed to get Kickstart file

Compute Node failed to get Kickstart file

When reinstall compute node, it get prompt for keyboard/language. This means, the 
compute node is not getting the kickstart file from the headnode.

- Try run /state/partition/rocks/install/sbin/kickstart.cgi --client compute-node-name
- If the kickstart file generated correctly, check if /root directory permission (754) 
  and ownership 'root:root'. Also, check /root/.my.cnf ownership and group is 'root:apache' 
  and permission is 440
- check the switch, network cable.
- Check if /var filesystem is full
- cd /state/partition/rocks/install; rocks create distro (if /var is full, you will get error)
- Connect the compute node directly to the headnode (if permissiable) and reinstall the
  compute node (eliminating the switch as the cause).