[Pacemaker] 2 web and 2 db servers both with drbd. Questions concerning the set-up

[Oliver Hoffmann]

Hi list,

I almost have a set-up which looks like this:


  Master side		  Slave side

  ---------virtual IP----------
  |                           |
web1----drbd/pacemaker------web2
  |                           |
  internal                 internal
  |                           |
  |                           |
db1----drbd/pacemaker-------db2


The web (apache + tomcat) and db (mysql + postgresql) servers have their
data on a drbd device each. The internal connection is for better
performance of the db queries and redundancy. 

How do I ensure that web2 AND db2 take the resources if web1 and/or db1
fail?

Thanks for input!

Regards,

Oliver