php实现监控varnish缓存服务器的状态_php技巧

系统:centos 5.x
软件:varnish-3.0.x

ps:3.0以下的版本可以通过Socket连接到Varnish管理端口,通过stat命令查看,3.0以上没有stat命令,只能通过下面的方法解决。

代码如下:
<?php
$outfile=shell_exec("/usr/bin/varnishstat -x");
$xml=simplexml_load_string($outfile);
echo $xml->getName() . "
";
foreach($xml->children() as $child)
{
//$tmpName="";
foreach($child->children() as $subChild)
{
if ($subChild->getName() =="name" )
{
$tmpName=$subChild;
}
else if ($subChild->getName() =="value" )
{
if ($tmpName!="")
{
$arys["$tmpName"]=$subChild;
$tmpName="";
}
}
else
{
continue;
}
}
}
function byteReduce($bytes)
{
if ($bytes>1099511627776)
{
return round($bytes/1099511627776)."TB";
}
else if ($bytes > 1073741824)
{
return round($bytes/1073741824)."GB";
}
else if ($bytes>1048576)
{
return round($bytes/1048576)."MB";
}
else if ($bytes>1024)
{
return round($bytes/1024)."KB";
}
else
{
return $bytes."B";
}
}
echo "client_conn: ".$arys["client_conn"] . "
";
echo "client_req: ".$arys["client_req"] . "
";
echo "cache_hit: ".$arys["cache_hit"] . "
";
echo "cache_miss: ".$arys["cache_miss"] . "
";
echo "Cache hit rate: ".round(($arys["cache_hit"]/$arys["client_req"])*100)." %
";
echo "LRU nuked objects: ".$arys[n_lru_nuked]."
";
echo " ".byteReduce($arys["s_bodybytes"]+$arys["s_hdrbytes"])." Acc Content (".byteReduce($arys["s_hdrbytes"])." header ".byteReduce($arys["s_bodybytes"])." Body)";
?>

效果如下:

ps:为了查看实时情况,可以在这监控页加个html定时刷新.
好了,这样就方便我们随时查看varnish的状态了.