tcpdump -A -nn -i eth2:

cat /var/log/ha-debug

tail /var/log/ha-log

/perfigo/common/bin/fostate.sh

more /?perfigo?/perfigo.conf

DEVICE=eth2
IPADDR=10.10.10.2
NETMASK=255.255.255.0
BROADCAST=10.10.10.255
NETWORK=10.10.10.0
BOOTPROTO=static
ONBOOT=yes
TYPE=Ethernet

Example of log output for lost HA-node

Other NAC Server down (Me active):
# tail -f /var/log/ha-log
heartbeat: 2010/09/05_08:09:21 info: Received shutdown notice from '[other-NAS-name]'.
heartbeat: 2010/09/05_08:09:21 info: Resources being acquired from [other-NAS-name].
heartbeat: 2010/09/05_08:09:21 info: Running /etc/ha.d/rc.d/status status
heartbeat: 2010/09/05_08:09:22 info: No local resources [/usr/lib64/heartbeat/ResourceManager listkeys [my-NAS-name]] to acquire.
heartbeat: 2010/09/05_08:09:22 info: Taking over resource group perfigo_ss
heartbeat: 2010/09/05_08:09:22 info: Acquiring resource group: [other-NAS-name] perfigo_ss
heartbeat: 2010/09/05_08:09:22 info: /usr/lib64/heartbeat/mach_down: nice_failback: foreign resources acquired
heartbeat: 2010/09/05_08:09:22 info: mach_down takeover complete.
heartbeat: 2010/09/05_08:09:22 info: mach_down takeover complete for node [other-NAS-name].
heartbeat: 2010/09/05_08:09:43 WARN: node [other-NAS-name]: is dead
heartbeat: 2010/09/05_08:09:43 info: Dead node [other-NAS-name] gave up resources.
heartbeat: 2010/09/05_08:09:43 info: Link [other-NAS-name]:eth[x] dead.

Other NAC Server up:
# tail -f /var/log/ha-log
heartbeat: 2010/09/05_08:11:57 info: Heartbeat restart on node [other-NAS-name]
heartbeat: 2010/09/05_08:11:57 info: Link [other-NAS-name]:eth[x] up.
heartbeat: 2010/09/05_08:11:57 info: Status update for node [other-NAS-name]: status up
heartbeat: 2010/09/05_08:11:57 info: Running /etc/ha.d/rc.d/status status
heartbeat: 2010/09/05_08:11:57 info: Status update for node [other-NAS-name]: status active
heartbeat: 2010/09/05_08:11:57 info: remote resource transition completed.
heartbeat: 2010/09/05_08:11:57 info: Running /etc/ha.d/rc.d/status status