[Pacemaker] New to PaceMaker

[Net Warrior]

Hi There Guys.

Maybe this was asked a million times before, so, here goes the millon 
and one.
I'm getting this error which I do not know what is means:

What is "not configured"  what is "not installed" ? what "unmanaged" means?

I'm trying to set up a simple apache server cluster in order to 
understand how it wokrs to follow up
with other complex services like mysql, ldap and the like.


Node fedora13-1: standby
Online: [ fedora13-2 ]

ClusterIP       (ocf::heartbeat:IPaddr2):       Started fedora13-2
  Master/Slave Set: WebDataClone [WebData]
      WebData:0  (ocf::linbit:drbd):     Slave fedora13-1 (unmanaged) FAILED
      WebData:1  (ocf::linbit:drbd):     Slave fedora13-2 (unmanaged) FAILED

Failed actions:
     WebFS_start_0 (node=fedora13-1, call=11, rc=5, status=complete): 
not installed
     WebData:0_stop_0 (node=fedora13-1, call=18, rc=6, status=complete): 
not configured
     WebData:0_stop_0 (node=fedora13-2, call=8, rc=6, status=complete): 
not configured

----

crm(live)configure# show
node fedora13-1 \
         attributes standby="on"
node fedora13-2
primitive ClusterIP ocf:heartbeat:IPaddr2 \
         params ip="192.168.0.31" cidr_netmask="32" \
         op monitor interval="30s"
primitive WebData ocf:linbit:drbd \
         params drbd_resource="cluster" \
         op monitor interval="60s"
primitive WebFS ocf:heartbeat:Filesystem \
         params device="/dev/drbd/by-res/cluster" 
directory="/cluster/var/www/html" fstype="ext3"
primitive WebSite ocf:heartbeat:apache \
         params configfile="/etc/httpd/conf/httpd.conf" \
         op monitor interval="1min"
ms WebDataClone WebData \
         meta master-max="1" master-node-max="1" clone-max="2" 
clone-node-max="1" notify="true"
location prefer-fedora13-1 WebSite 50: fedora13-1
colocation WebSite-with-WebFS inf: WebSite WebFS
colocation fs_on_drbd inf: WebFS WebDataClone:Master
colocation website-with-ip inf: WebSite ClusterIP
order WebFS-after-WebData inf: WebDataClone:promote WebFS:start
order WebSite-after-WebFS inf: WebFS WebSite
order apache-after-ip inf: ClusterIP WebSite
property $id="cib-bootstrap-options" \
         dc-version="1.1.4-ac608e3491c7dfc3b3e3c36d966ae9b016f77065" \
         cluster-infrastructure="openais" \
         expected-quorum-votes="2" \
         stonith-enabled="false" \
         no-quorum-policy="ignore"
rsc_defaults $id="rsc-options" \
         resource-stickiness="100"

I followed this How-to
http://www.clusterlabs.org/doc/en-US/Pacemaker/1.1/html/Clusters_from_Scratch/ch07s03.html



Thanks for your time and support
Best Regards