[Pacemaker] Failback problem with active/active cluster

[Charles KOPROWSKI]

Hello,

I set up a 2 nodes cluster (active/active) to build an http reverse 
proxy/firewall. There is one vip shared by both nodes and an apache 
instance running on each node.

Here is the configuration :

node lpa \
	attributes standby="off"
node lpb \
	attributes standby="off"
primitive ClusterIP ocf:heartbeat:IPaddr2 \
	params ip="10.1.52.3" cidr_netmask="16" clusterip_hash="sourceip" \
	op monitor interval="30s"
primitive HttpProxy ocf:heartbeat:apache \
	params configfile="/etc/apache2/apache2.conf" \
	op monitor interval="1min"
clone HttpProxyClone HttpProxy
clone ProxyIP ClusterIP \
	meta globally-unique="true" clone-max="2" clone-node-max="2"
colocation HttpProxy-with-ClusterIP inf: HttpProxyClone ProxyIP
order HttpProxyClone-after-ProxyIP inf: ProxyIP HttpProxyClone
property $id="cib-bootstrap-options" \
	dc-version="1.0.8-042548a451fce8400660f6031f4da6f0223dd5dd" \
	cluster-infrastructure="openais" \
	expected-quorum-votes="2" \
	stonith-enabled="false" \
	no-quorum-policy="ignore"


Everything works fine at the beginning :


Online: [ lpa lpb ]

  Clone Set: ProxyIP (unique)
      ClusterIP:0	(ocf::heartbeat:IPaddr2):	Started lpa
      ClusterIP:1	(ocf::heartbeat:IPaddr2):	Started lpb
  Clone Set: HttpProxyClone
      Started: [ lpa lpb ]


But after simulating an outage of one of the nodes with "crm node 
standby" and a recovery with "crm node online", all resources stay on 
the same node :


Online: [ lpa lpb ]

  Clone Set: ProxyIP (unique)
      ClusterIP:0	(ocf::heartbeat:IPaddr2):	Started lpa
      ClusterIP:1	(ocf::heartbeat:IPaddr2):	Started lpa
  Clone Set: HttpProxyClone
      Started: [ lpa ]
      Stopped: [ HttpProxy:1 ]


Can you tell me if something is wrong in my configuration ?

crm_verify give me the following output :

crm_verify[22555]: 2011/03/10_13:49:00 ERROR: clone_rsc_order_lh: Cannot 
interleave clone ProxyIP and HttpProxyClone because they do not support 
the same number of resources per node
crm_verify[22555]: 2011/03/10_13:49:00 ERROR: clone_rsc_order_lh: Cannot 
interleave clone HttpProxyClone and ProxyIP because they do not support 
the same number of resources per node


Many thanks,

Regards,

-- 
Charles KOPROWSKI

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