zabbix 设置告警邮件key值出现*UNKNOWN*的问题？

shenyg

　　问题：
　　Configuration--> Actions-->action编辑内容如下：


　　Trigger severity: {TRIGGER.SEVERITY} </br>
Latest value: {{HOST.HOST}:{ITEM.KEY}.last(0)} </br>
MAX for 15 minutes: {{HOST.HOST}:{ITEM.KEY}.max(900)}  </br>
MIN  for 15 minutes: {{HOST.HOST}:{ITEM.KEY}.min(900)}  </br>
Event date: {EVENT.DATE}-{EVENT.TIME}   </br>
</br>
[------Other information-------] </br>
[******CPU******] </br>
CPU load:<span style=&quot;color:#FF0000;&quot;> {{HOST.HOST}:system.cpu.load[all,avg1].last(0)} </br></span>
CPU iowait percent: {{HOST.HOST}:system.cpu.util[,iowait].last(0)} </br>
CPU idle    percent: {{HOST.HOST}:system.cpu.util[,idle].last(0)} </br>
[******Memory******] </br>
Memory total: {{HOST.HOST}:vm.memory.size[total].last(0)} </br>
Memory  available Percent: <span style=&quot;color:#FF0000;&quot;>{{HOST.HOST}:vm.memory.size[pavailable].last(0)}</span> </br>
[******DISK******] </br>
Disk Total Space : {{HOST.HOST}:vfs.fs.size[/,total].last(0)} </br>
Disk Free Space Percent: {{HOST.HOST}:vfs.fs.size[/,pfree].last(0)} </br>
Trigger URL: {TRIGGER.URL}

收到告警邮件：
　　Trigger severity: Warning
Latest value: 3
MAX for 15 minutes: 3
MIN for 15 minutes: 1
Event date: 2014.09.04-14:38:34
[------Other information-------]
[******CPU******]
CPU load: <span style=&quot;color:#FF0000;&quot;>*UNKNOWN* </span>
CPU iowait percent: 0.79 %
CPU idle percent: 91.23 %
[******Memory******]
Memory total: 3.74 GB
Memory available Percent:<span style=&quot;color:#FF0000;&quot;> *UNKNOWN* </span>
[******DISK******]
Disk Total Space : 14.46 GB
Disk Free Space Percent: 82.21 %
Trigger URL:

对出现*UNKNOWN*的key&#20540;测试可以取到&#20540;：
　　[iyunv@localhost ~]# zabbix_get -s 192.168.136.130 -k system.cpu.load[all,avg1]
0.050000


　　解决办法:
　　未解决。