Reference slide
http://www.scribd.com/doc/2684169/LiveJournal-scaling
Environment
Redhat-based linux (Fedora, CentOS)
Installation
yum install heartbeat
Minimum Configuration
/etc/ha.d/ha.cf
node heartbeat1
node heartbeat2
bcast eth0
auto_failback off
/etc/ha.d/haresources
heartbeat1 192.168.85.3/27/192.168.85.16
/etc/ha.d/authkeys
auth 1
1 sha1 passwordString
Few description
/etc/ha.d/ha.cf
node xxx
node nodename = Indicate node in this heartbeat cluster
we can obtain nodename via uname -n command
bcast eth0