Heartbeat 3 binding socket error (SOS)

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http://unix.stackexchange.com – I've been tying to install Heartbeat3.0.5+Pacemaker1.0.12 on CentOS 6.3 64bit via yum. The installation seems to be successful, but there is a problem when starting Heartbeat. I put some info related to this issue below, PLEASE help me. Node Info Active : hm5 Standby : hm6 Package Info [root@hm5 rpm]# rpm -qa | grep -i heartbeat heartbeat-libs-3.0.5-1.1.el6.x86_64 heartbeat-3.0.5-1.1.el6.x86_64 [root@hm5 rpm]# rpm -qa | grep -i pacemaker pacemaker-1.0.11-1.2.el6.x86_64 pacemaker-libs-1.0.11-1.2.el6.x86_64 ha.cf Info [root@hm5 rpm]# cat /etc/ha.d/ha.cf pacemaker on logfacility local (HowTos)