安装thold需要先settings支持
http://docs.cacti.net/plugin:thold
http://docs.cacti.net/plugin:settings
1、安装settings与thold
[root@localhost ~]# tar zxvf thold-v0.5.0.tgz -C /usr/local/nginx/html/plugins
[root@localhost ~]# tar zxvf settings-v0.71-1.tgz -C /usr/local/nginx/html/plugins/
2、注册到Cacti页签
[root@localhost ~]# vi /usr/local/nginx/html/include/config.php
$url_path = "/"; #下面添加如下
$plugins[] = 'settings';
$plugins[] = 'thold';
3、安装并启动插件

安装并启动后,控制栏会多出一些功能选项

4、设置发送邮件信息
5、默认Cacti报警使用Bites来监控流量的,我们需要转换成Mbits,这样方便设置阀值。
console—GraphManagement—CDEFs—Add—Byte to Mbits

6、Monitor提供了一个可视化对主机状态监控,安装与上面一样
下载:http://docs.cacti.net/plugin:monitor


7、添加监控对象与报警信息

选择要监控的主机,交换机端口,进出流量,点击Create创建

填写报警信息


8、查看报警状态及测试报警

至此邮件报警就设置完成了,可以在服务器上下载东西,来测试到达阀值看是否报警了。