环境说明：
主机名角色IP地址mylinux1.contoso.comheartbeat+haproxy
eth0:192.168.100.121
eth1:172.16.100.121
mylinux2.contoso.comheartbeat+haproxy
eth0:192.168.100.122
eth1:172.16.100.122
mylinux3.contoso.comweb server 1eth0:192.168.100.181mylinux4.contoso.comweb server 2eth0:192.168.100.182
一、环境准备
在mylinux1和mylinux2上安装heartbeat，可以手动安装，当然也可以使用前面发布的一篇heartbeat脚本的博文，里面有heartbeat快速安装脚本。
然后在mylinux2上安装haproxy，并将mylinux1上的haproxy配置文件和启停脚本都拷贝到mylinux2上。
要保证mylinux1和mylinux2的heartbeat+haproxy环境一致。
[root@mylinux1~]#scp/etc/init.d/haproxymylinux2:/etc/init.d/root@mylinux2'spassword:Permissiondenied,pleasetryagain.root@mylinux2'spassword:haproxy100%15671.5KB/s00:00[root@mylinux1~]#scp/usr/local/haproxy/conf/haproxy.cfgmylinux2:/usr/local/haproxy/conf/haproxy.cfgroot@mylinux2'spassword:haproxy.cfg100%11941.2KB/s00:00[root@mylinux2haproxy]#ll/etc/init.d/haproxy-rwxr-xr-x1rootroot1567Oct102:11/etc/init.d/haproxy[root@mylinux2haproxy]#ll/usr/local/haproxy/conf/haproxy.cfg-rw-r--r--1rootroot1194Oct102:13/usr/local/haproxy/conf/haproxy.cfg
二、修改heartbeat的资源文件
[root@mylinux1~]#tail-1/etc/ha.d/haresourcesmylinux1.contoso.comIPaddr::192.168.100.120/24/eth0haproxy[root@mylinux2haproxy]#tail-1/etc/ha.d/haresourcesmylinux1.contoso.comIPaddr::192.168.100.120/24/eth0haproxy
这里还是贴出两个heartbeat节点的ha.cf配置，如下：
[root@mylinux1~]#egrep-v"#|^$"/etc/ha.d/ha.cfdebugfile/var/log/ha-debuglogfile/var/log/ha-loglogfacilitylocal1keepalive2deadtime30warntime10initdead120udpport694mcasteth1225.0.0.169410auto_failbackonnodemylinux1.contoso.comnodemylinux2.contoso.comrespawnhacluster/usr/lib64/heartbeat/ipfail[root@mylinux2haproxy]#egrep-v"#|^$"/etc/ha.d/ha.cfdebugfile/var/log/ha-debuglogfile/var/log/ha-loglogfacilitylocal1keepalive2deadtime30warntime10initdead120udpport694mcasteth1225.0.0.169410auto_failbackonnodemylinux1.contoso.comnodemylinux2.contoso.comrespawnhacluster/usr/lib64/heartbeat/ipfail
三、启动heartbeat服务
1、首先在mylinux1和mylinux2上先关闭haproxy服务
[root@mylinux1~]#servicehaproxystopStophaproxysuccessful.[root@mylinux2haproxy]#servicehaproxystopHaproxyisnotrunning.Stophaproxyfailed!
2、依次启动mylinux1和mylinux2上的heartbeat服务
[root@mylinux1~]#/etc/init.d/heartbeatstartStartingHigh-Availabilityservices:INFO:ResourceisstoppedDone.[root@mylinux2haproxy]#/etc/init.d/heartbeatstartStartingHigh-Availabilityservices:INFO:ResourceisstoppedDone.
四、测试haproxy的高可用
1、首先，检查mylinux1的状态
[root@mylinux1~]#ipa|grep192.168.100.120inet192.168.100.120/24brd192.168.100.255scopeglobalsecondaryeth0[root@mylinux1~]#servicehaproxystatusHaproxy(pid3600)isrunning...
2、其次，检查mylinux2的状态
[root@mylinux2haproxy]#ipa|grep192.168.100.120[root@mylinux2haproxy]#servicehaproxystatusHaproxyisstopped.
3、查看监控界面
五、测试故障切换
1、停止mylinux1上的heartbeat服务
[root@mylinux1~]#/etc/init.d/heartbeatstopStoppingHigh-Availabilityservices:Done.
2、检查mylinux1和mylinux2的状态
[root@mylinux1~]#ipa|grep192.168.100.120[root@mylinux1~]#servicehaproxystatusHaproxyisstopped.[root@mylinux2haproxy]#ipa|grep192.168.100.120inet192.168.100.120/24brd192.168.100.255scopeglobalsecondaryeth0[root@mylinux2haproxy]#servicehaproxystatusHaproxy(pid3997)isrunning...
3、查看监控页面
4、查看mylinux2上的heartbeat日志
[root@mylinux2 ~]# /var/log/ha-log
[root@mylinux2 ~]# tail -f /var/log/ha-log
Oct 01 02:44:31 mylinux2.contoso.com heartbeat: [3534]: info: Received shutdown notice from ‘mylinux1.contoso.com’.
Oct 01 02:44:31 mylinux2.contoso.com heartbeat: [3534]: info: Resources being acquired from mylinux1.contoso.com.
Oct 01 02:44:31 mylinux2.contoso.com heartbeat: [3655]: info: acquire local HA resources (standby).
Oct 01 02:44:31 mylinux2.contoso.com heartbeat: [3656]: info: No local resources [/usr/share/heartbeat/ResourceManager listkeys mylinux2.contoso.com] to acquire.
Oct 01 02:44:31 mylinux2.contoso.com heartbeat: [3655]: info: local HA resource acquisition completed (standby).
Oct 01 02:44:31 mylinux2.contoso.com heartbeat: [3534]: info: Standby resource acquisition done [all].
harc(default)[3681]:2016/10/01_02:44:31 info: Running /etc/ha.d//rc.d/status status
mach_down(default)[3698]:2016/10/01_02:44:31 info: Taking over resource group IPaddr::192.168.100.120/24/eth0
ResourceManager(default)[3725]:2016/10/01_02:44:31 info: Acquiring resource group: mylinux1.contoso.com IPaddr::192.168.100.120/24/eth0 haproxy
/usr/lib/ocf/resource.d//heartbeat/IPaddr(IPaddr_192.168.100.120)[3753]: 2016/10/01_02:44:31 INFO: Resource is stopped
ResourceManager(default)[3725]:2016/10/01_02:44:31 info: Running /etc/ha.d/resource.d/IPaddr 192.168.100.120/24/eth0 start
IPaddr(IPaddr_192.168.100.120)[3878]:2016/10/01_02:44:32 INFO: Adding inet address 192.168.100.120/24 with broadcast address 192.168.100.255 to device eth0
IPaddr(IPaddr_192.168.100.120)[3878]:2016/10/01_02:44:32 INFO: Bringing device eth0 up
IPaddr(IPaddr_192.168.100.120)[3878]:2016/10/01_02:44:32 INFO: /usr/libexec/heartbeat/send_arp -i 200 -r 5 -p /var/run/resource-agents/send_arp-192.168.100.120 eth0 192.168.100.120 auto not_used not_used
/usr/lib/ocf/resource.d//heartbeat/IPaddr(IPaddr_192.168.100.120)[3852]: 2016/10/01_02:44:32 INFO: Success
ResourceManager(default)[3725]:2016/10/01_02:44:32 info: Running /etc/init.d/haproxy start
mach_down(default)[3698]:2016/10/01_02:44:32 info: /usr/share/heartbeat/mach_down: nice_failback: foreign resources acquired
mach_down(default)[3698]:2016/10/01_02:44:32 info: mach_down takeover complete for node mylinux1.contoso.com.
Oct 01 02:44:32 mylinux2.contoso.com heartbeat: [3534]: info: mach_down takeover complete.
Oct 01 02:45:02 mylinux2.contoso.com heartbeat: [3534]: WARN: node mylinux1.contoso.com: is dead
Oct 01 02:45:02 mylinux2.contoso.com heartbeat: [3534]: info: Dead node mylinux1.contoso.com gave up resources.
Oct 01 02:45:02 mylinux2.contoso.com heartbeat: [3534]: info: Link mylinux1.contoso.com:eth1 dead.
Oct 01 02:45:02 mylinux2.contoso.com ipfail: [3543]: info: Status update: Node mylinux1.contoso.com now has status dead
Oct 01 02:45:03 mylinux2.contoso.com ipfail: [3543]: info: NS: We are dead. :
Oct 01 02:45:03 mylinux2.contoso.com ipfail: [3543]: info: Link Status update: Link mylinux1.contoso.com/eth1 now has status dead
Oct 01 02:45:04 mylinux2.contoso.com ipfail: [3543]: info: We are dead. :
Oct 01 02:45:04 mylinux2.contoso.com ipfail: [3543]: info: Asking other side for ping node count.
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