Nick ten Cate's Blog

Monitor Concurrent Connections from Wowza Media Server in Munin

So.. theres a professional way to do this (can be found on the Wowza Media Server forums[click]), but it requires you to bounce Wowza, which is less ideal.

Heres the hack:

First..

apt-get install php5-cli php5-curl

/etc/munin/wowzaget.php

#!/usr/bin/php
<?php
 function xml2array($xml) {
      $arXML=array();
      $arXML['name']=trim($xml->getName());
      $arXML['value']=trim((string)$xml);
      $t=array();
      foreach($xml->attributes() as $name => $value) $t[$name]=trim($value);
      $arXML['attr']=$t;
      $t=array();
      foreach($xml->children() as $name => $xmlchild) $t[$name]=xml2array($xmlchild);
      $arXML['children']=$t;
      return($arXML);
   }

function getIt($host,$user,$pass){
    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, "http://".$host.":8086/connectioncounts");
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    curl_setopt($ch, CURLOPT_USERPWD, $user.":".$pass);
    curl_setopt($ch, CURLOPT_HTTPAUTH, CURLAUTH_DIGEST);
    $output = curl_exec($ch);
    $info = curl_getinfo($ch);
    curl_close($ch);

    $xml = simplexml_load_string ($output);
    $x = xml2array($xml);
    return array($x["children"]["ConnectionsTotal"]["value"],$x["children"]["ConnectionsCurrent"]["value"]);
}

$x = getIt("localhost","USERNAME","PASSWORD!");

echo $x[0]." ".$x[1];

?>

/etc/munin/plugins/munin_wowza (credit goes to georgi

#!/bin/sh

case $1 in
   config)
        cat <<'EOM'
graph_title Wowza connections
graph_scale no
graph_category wowza
graph_vlabel connections
total_connections.label total connections
live_connections.label live connections
total_connections.draw AREA
live_connections.draw LINE1
EOM
        exit 0;;
esac

cons=`/etc/munin/wowzaget.php`

tot=`echo $cons | cut -d' ' -f1`
live=`echo $cons | cut -d' ' -f2`

echo -n "total_connections.value "
echo $tot

echo -n "live_connections.value "
echo $live

Make sure you

chmod +x /etc/munin/wowzaget.php
chmod +x /etc/munin/plugins/munin_wowza

And replace the username/password with those found in
/usr/local/WowzaMediaServer/admin.password

Then viola, wowza in munin.
(If you look at the script, you can also use 1 server to monitor _ALL_, but you must enable your wowza control (on port 8086) to respond to external connections (which is unsafe))

Tags: php wowza bash