hello, I setup drbd on Rhel6 64 bit servers successfully. But I failed to setup heartbeat on the servers. I dont require pacemaker because I have to setup heartbeat on only two nodes. I am using below rpms to setup heartbeat. cluster-glue-1.0.5-2.el6.x86_64.rpm cluster-glue-libs-1.0.5-2.el6.x86_64.rpm heartbeat-3.0.4-1.el6.x86_64.rpm heartbeat-libs-3.0.4-1.el6.x86_64.rpm resource-agents-3.9.2-7.el6.x86_64.rpm what shd be the steps to configure. pls help. cat /etc/ha.d/ha.cf debugfile /var/log/ha-debug logfile /var/log/ha-log logfacility local0 keepalive 2 deadtime 30 warntime 10 initdead 60 udpport 694 bcast eth0 # Linux auto_failback off node xfprimary node xfsecondary ping 192.168.0.220 #apiauth ipfail gid=haclient uid=hacluster #respawn hacluster /usr/lib64/heartbeat/ipfail cat /etc/ha.d/authkeys #Contains configuration for Heartbeat authentication auth 1 1 crc cat /etc/ha.d/haresources #Contains configuration for Heartbeat resources xfprimary 192.168.0.141/24/eth1 drbddisk::mcsdata Filesystem::/dev/drbd1::/mcsdata::ext4 drbddisk::mailstore Filesystem::/dev/drbd0::/mailstore::ext4 heartbeatservices Problem: on both nodes heartbeat are running. One one node is primary and other is secondary. If I stopped heartbeat service on primary then switching doesnot happens. on primary node ha-debug is showing Feb 17 19:57:15 xfprimary heartbeat: : WARN: Shutdown delayed until current resource activity finishes. Feb 17 19:58:32 xfprimary heartbeat: : info: all clients are now paused Feb 17 20:02:42 xfprimary heartbeat: : WARN: Message hist queue is filling up (376 messages in queue) Feb 17 20:02:44 xfprimary heartbeat: : WARN: Message hist queue is filling up (377 messages in queue) Feb 17 20:02:46 xfprimary heartbeat: : WARN: Message hist queue is filling up (378 messages in queue) on secondary node ha-debug is showing mach_down: 2012/02/17_20:01:27 info: /usr/share/heartbeat/mach_down: nice_failback: foreign resources acquired mach_down: 2012/02/17_20:01:27 info: mach_down takeover complete for node xfprimary. Feb 17 20:01:27 xfsecondary heartbeat: : info: mach_down takeover complete. hb_standby: 2012/02/17_20:01:57 Going standby [foreign]. Feb 17 20:01:57 xfsecondary heartbeat: : info: xfsecondary wants to go standby [foreign] Feb 17 20:02:07 xfsecondary heartbeat: : WARN: No reply to standby request. Standby request cancelled. Pls help.