CentOS 5
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Install HeartBeat
2008/08/15
  Install HeartBeat and build HA (High Availability) cluster environment.

This example sets 2 systems as cluster servers. The environment of 2 systems are like below. They have 2 NICs.

(1) www1.server-linux.info[eth0:192.168.0.21] [eth1:10.0.0.21]
(2) www2.server-linux.info[eth0:192.168.0.22] [eth1:10.0.0.22]

[1] Install HeartBeat first. It's necessary to do this on both systems.
[root@www1 ~]#
yum -y install heartbeat

[root@www1 ~]#
yum -y install heartbeat
 
# run again becaus of errors


[root@www1 ~]#
vi /etc/ha.d/authkeys
# create certificates


auth 1
1 crc


[root@www1 ~]#
chmod 600 /etc/ha.d/authkeys
[2] Config for a server of (1)
[root@www1 ~]#
vi /etc/ha.d/ha.cf


crm on
# debug log

debugfile /var/log/ha-debug
# log file

logfile /var/log/ha-log
# the way of output to syslog

logfacility local0
# keepalive

keepalive 2
# deadtime

deadtime 30
# deadping

deadping 40
# warntime

warntime 10
# initdead

initdead 60
# port

udpport 694
# interface and IP address of another Host

ucast eth1 10.0.0.22
# auto failback

auto_failback on
# node name (the name of "uname -n")

node www1.server-linux.info
node www2.server-linux.info
respawn root /usr/lib/heartbeat/pingd -m 100 -d 5s -a default_ping_set
[3] Config for a server of (2). The different point is only the section of ucast.
[root@www1 ~]#
vi /etc/ha.d/ha.cf


crm on
debugfile /var/log/ha-debug
logfile /var/log/ha-log
logfacility local0
keepalive 2
deadtime 30
deadping 40
warntime 10
initdead 60
udpport 694
# interface and IP address of another Host

ucast eth1 10.0.0.21
auto_failback on
node www1.server-linux.info
node www2.server-linux.info
respawn root /usr/lib/heartbeat/pingd -m 100 -d 5s -a default_ping_set
[4] Start HeartBeat on both server
[root@www1 ~]#
/etc/rc.d/init.d/heartbeat start

Starting High-Availability services:
[  OK  ]
[root@www1 ~]#
chkconfig heartbeat on
[5] Run crm_mon on both server, then if following result is shown, it's OK, heartbeat running normally. These are Basical configuration of HeartBeat.
[root@www1 ~]#
crm_mon -i 3

Defaulting to one-shot mode
You need to have curses available at compile time to enable console mode

============
Last updated: Sun Jun 15 05:04:34 2008
Current DC: www2.server-linux.info (f8719a77-70b4-4e5f-851b-dafa7d65d3a2)
2 Nodes configured.
0 Resources configured.
============

Node: www2.server-linux.info (f8719a77-70b4-4e5f-851b-dafa7d65d3a2): online
Node: www1.server-linux.info (2bbd6408-ec01-4b8c-bb8e-207237af3a99): online
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