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Install HeartBeat
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| 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] |
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| [1] | Install HeartBeat first. It's necessary to do this on both systems. |
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[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
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| [2] | Config for a server of (1) |
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[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. |
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[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 |
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[root@www1 ~]# /etc/rc.d/init.d/heartbeat start Starting High-Availability services: [ OK ] [root@www1 ~]# chkconfig heartbeat on
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| [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. |
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[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 |