测试Heartbeat的HA功能

1、启动主节点的Heartbeat

Heartbeat安装完成后，自动在/etc/init.d目录下生成了启动脚步文件heartbeat，直接输入/etc/init.d/heartbeat可以看到heartbeat脚本的用法，如下所示：

[root@node1 ~]# /etc/init.d/heartbeat

Usage: /etc/init.d/heartbeat {start|stop|status|restart|reload|force-reload}

因而启动heartbeat可以通过如下命令进行：

[root@node1 ~]#service heartbeat start

或者通过

[root@node1 ~]#/etc/init.d/heartbeat start

这样就启动了主节点的heartbeat服务

日志信息如下：

Feb  5 19:09:48 node1 heartbeat: [22768]: info: glib: ucast: bound send socket to device: eth0

Feb  5 19:09:48 node1 heartbeat: [22768]: info: glib: ucast: bound receive socket to device: eth0

Feb  5 19:09:48 node1 heartbeat: [22768]: info: glib: ucast: started on port 694 interface eth0 to 192.168.12.1

Feb  5 19:09:48 node1 heartbeat: [22768]: info: glib: ping heartbeat started.

Feb  5 19:09:48 node1 heartbeat: [22768]: info: glib: ping group heartbeat started.

Feb  5 19:09:48 node1 heartbeat: [22768]: info: Local status now set to: 'up'

Feb  5 19:09:49 node1 heartbeat: [22768]: info: Link 192.168.12.1:192.168.12.1 up.

Feb  5 19:09:49 node1 heartbeat: [22768]: info: Status update for node 192.168.12.1: status ping

Feb  5 19:09:49 node1 heartbeat: [22768]: info: Link group1:group1 up.

Feb  5 19:09:49 node1 heartbeat: [22768]: info: Status update for node group1: status ping

此段日志是Heartbeat在进行初始化配置，例如，heartbeat的心跳时间间隔、UDP广播端口、ping节点的运行状态等，日志信息到这里会暂停，等待120秒之后，heartbeat会继续输出日志，而这个120秒刚好是ha.cf中“initdead”选项的设定时间。此时heartbeat的输出信息如下：

Feb  5 19:11:48 node1 heartbeat: [22768]: WARN: node node2: is dead

Feb  5 19:11:48 node1 heartbeat: [22768]: info: Comm_now_up(): updating status to active

Feb  5 19:11:48 node1 heartbeat: [22768]: info: Local status now set to: 'active'

Feb  5 19:11:48 node1 heartbeat: [22768]: info: Starting child client "/usr/local/ha/lib/heartbeat/pingd -m 100 -d 5s" (102,105)

Feb  5 19:11:49 node1 heartbeat: [22768]: WARN: No STONITH device configured.

Feb  5 19:11:49 node1 heartbeat: [22768]: WARN: Shared disks are not protected.

Feb  5 19:11:49 node1 heartbeat: [22768]: info: Resources being acquired from node2.

Feb  5 19:11:49 node1 heartbeat: [22794]: info: Starting "/usr/local/ha/lib/heartbeat/pingd -m 100 -d 5s" as uid 102  gid 105 (pid 22794)

在上面这段日志中，由于node2还没有启动，所以会给出“node2: is dead”的警告信息，接下来启动了heartbeat插件pingd，由于我们在ha.cf文件中没有配置STONITH，所以日志里也给出了“No STONITH device configured”的警告提示。

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