{{parent page="LinuxHA"}}

===HeartBeat 1.2.x installation and config===

==heartbeat commands==
%%
/usr/lib64/heartbeat/hb_standby
/usr/lib64/heartbeat/hb_takeover
%%

==create an authkeys file==
%%
auth 1
1 sha1 some-secret-here
%%

==Heartbeat config==
%%(text;ha.cf)
udpport 3740
baud 9600
serial /dev/ttyS0
debugfile /var/log/ha-debug-log
debug 0
logfile /var/log/ha-log
ucast bond0 192.168.0.227
ucast eth3 10.0.0.227

auto_failback off
warntime 6
deadtime 13
initdead 20
keepalive 2
watchdog /dev/watchdog
respawn hacluster /usr/lib64/heartbeat/ipfail
# successful ping response from any hosts will be treated as positive reply
ping_group ipfail-ping 1.2.3.4 5.6.7.8

node    prod-ha-mysql01  prod-ha-mysql02

# stonith_host * plugin_name myhostname ilo_ip ilo_login ilo_pwd ilo_reset ilo_version action
stonith_host * external/riloe prod-ha-mysql02 10.0.0.225 Administrator xxxxxxx 1 2.0 reset
%%

%%(text;hapm.conf)
socket=127.0.0.1:3306
time=60
graceful_time=55
heartbeat=/etc/init.d/heartbeat
heartbeatpid=/var/run/heartbeat.pid
%%

%%(bash;expect script to stonith via ilo ssh - replaced by the riloe plugin above)
#!/bin/bash

RECIPIENTS="sysadmin@domain.com"
ME="node1.domain.com"
YOU="node2.domain.com"

/bin/echo "$ME initiating forced restart of $YOU via ILO" | mail -s "$ME invokes STONITH" $RECIPIENTS
/opt/scripts/ilokill-node02.sh 1> /dev/null 2> /dev/null
exit 0
%%

== HA resources ==
%%(text;haresources)
node1.domain.com drbddisk::mirror0 \
Filesystem::/dev/drbd0::/disk1::ext3 \
nfs \
nfslock \
vsftpd \
Delay::3::0 \
IPaddr::10.1.1.30/24/eth2 \
IPaddr::222.222.222.222/26/eth0
%%

==Serial null modem==
The above example already includes serial connections. Once the cable is connected and heartbeat started, you may tap into heartbeat's data by catting /dev/ttyS0 (or whatevery connections you're on)
%%
		   cat </dev/ttyS0
%%

If you need to test your serial connection, run the above on the recipient and then run the following on the sending machine:

%%
		   echo hello >/dev/ttyS0 
%%

It may be necessary to turn off flow control if you have a cable that doesn't meet the spec. Not 100% sure about this.
%%
stty -F /dev/ttyS0 -crtscts
%%

I simply add this to /etc/ha.d/harc:
%%
ha_log "Turning off flow control..."
stty -F /dev/ttyS0 -crtscts
%%

When serial connection is correctly setup, you may tap into its conversation with 
%%
cat < /dev/ttyS0
%%