Pacemaker corosync 2-node with a 3rd for quorum

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http://serverfault.com – I'm having trouble figuring out how to configure a 2-node setup with a third simpler one for quorum. It seems to think all the nodes have the capability to act as a full fallback node, when I only I want a quorum with STONITH working sanely for what is essentially a 2+1 DRBD-MySQL node system. Any tips or documentation on how to make the 3rd node just a quorum member would be appreciated. (HowTos)