Apache tidak bisa start di node cluster Pacemaker

Jika Anda pengguna cluster pacemaker, dan menemukan error seperti dibawah ini saat resource apache2 tidak mau start dan isi dari error log tidak menunjukkan clue yang berarti :

Failed actions:
    WebSite_start_0 (node=node1, call=24, rc=-2, status=Timed Out): unknown exec error

Anda bisa mencoba langkah berikut, langkah ini sudah saya coba dan menyelesaikan masalah saya.

# crm status
============
Last updated: Fri Sep 13 11:38:17 2013
Last change: Fri Sep 13 11:38:02 2013 via crm_attribute on node1
Stack: openais
Current DC: node2 - partition with quorum
Version: 1.1.7-ee0730e13d124c3d58f00016c3376a1de5323cff
2 Nodes configured, 2 expected votes
7 Resources configured.
============

Online: [ node2 node1 ]

 Resource Group: WebServer
     ClusterIP  (ocf::heartbeat:IPaddr2):       Started node1
     WebFS      (ocf::heartbeat:Filesystem):    Started node1
     Links      (heartbeat:drbdlinks):  Started node1
     DBase      (ocf::heartbeat:mysql): Started node1
     WebSite    (ocf::heartbeat:apache):        Stopped
 Master/Slave Set: ms_r0 [r0]
     Masters: [ node1 ]
     Slaves: [ node2 ]

Failed actions:
    WebSite_start_0 (node=node1, call=24, rc=-2, status=Timed Out): unknown exec error

Tambahkan baris berikut di apache2.conf (saya menggunakan Debian 7.1)

ExtendedStatus On

<Location /server-status>
     SetHandler server-status
     Order deny,allow
     Deny from all
     Allow from 127.0.0.1
</Location>

Kemudian restart resource apachenya.

# crm resource restart WebSite