用php自定义 nagios监控插件
用来监控是哪个进程触发了指定预警的cpu占用率#!/usr/local/php5/bin/php
<?php
//exec('ps -eo pcpu,pid,user,command | sort -k 1 -r | head -2',$info);
exec('top -n 1 -b | head -8',$tinfo);
$match = preg_split('/[\s\t]+/',trim($tinfo));
$pid = $match;
$user = $match;
$cpu = $match;
$mem = $match;
exec("ps -p {$pid} -o command",$info);
$cmd = $info;
$w = $argv;
$c = $argv;
if($cpu >= $c){
$stat = "CRITICAL";
$code = 2;
}elseif($cpu >= $w){
$stat = "WARNING";
$code = 1;
}else{
$stat = "OK";
$code = 0;
}
echo "WHOISTOP {$stat}: CPU({$cpu}%),MEM({$mem}),PID({$pid}),USER({$user}),CMD({$cmd})";
exit($code);
使用：/path/to/check_whoistop 30 50
注意exit($code), 是nagios要求的脚本返回码，分别为0:ok, 1:warning,2,CRITICAL,3,unkown
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