<?php
$cmd = "ps aux | grep apache | wc -l";
$output = system($cmd);
printf("Apache: $output\n");
echo "<br \>";
function get_memory() {
foreach(file('/proc/meminfo') as $ri)
$m[strtok($ri, ':')] = strtok('');
return 100 - round(($m['MemFree'] + $m['Buffers'] + $m['Cached']) / $m['MemTotal'] * 100);
}
echo get_memory();
?>90 Apache: 90
67
<?php
$cmd = "ps aux | grep apache | wc -l";
$output = exec($cmd);
//Parse output
if ($output > 10)
{
$output = "Green time!";
}
printf("Apache: $output\n");
echo "<br \>";
function get_memory() {
foreach(file('/proc/meminfo') as $ri)
$m[strtok($ri, ':')] = strtok('');
return 100 - round(($m['MemFree'] + $m['Buffers'] + $m['Cached']) / $m['MemTotal'] * 100);
}
?>$output = "<font color=green>" . $output . "</font>";<?php
$cmd = "ps aux | grep apache | wc -l";
$output = exec($cmd);
//Parse output
if ($output > 80)
{
$output = "<font color=red>". $output . "</font> apache users";
printf("Apache: $output\n");
echo "<br \>";
}
elseif ($output < 79)
{
$output = "<font color=green>". $output . "</font> apache users";
printf("Apache: $output\n");
echo "<br \>";
}
function get_memory() {
foreach(file('/proc/meminfo') as $ri)
$m[strtok($ri, ':')] = strtok('');
return 100 - round(($m['MemFree'] + $m['Buffers'] + $m['Cached']) / $m['MemTotal'] * 100);
}
?>Basically, Apache has a nice page whe
re you can view the statistics, number of processes, processed requests, etc etc. Lots of information.
How to enable it?
Check the 'server-status' lines in httpd.conf (default location in RHEL installation is /etc/httpd/conf/httpd.conf).
You also need to enable 'extendedstatus'. Search for both those values in httpd.conf and you'll find them.
P.S: The number of apache processes returned by 'ps aux' is not always the number of connected users. Depending on your configuration, it could be idle children waiting to process a request. So your technique is kind of flawed
<head>
<style type="text/css">
.green-square {
background-color: #0f0;
display: block;
height: 70px;
width: 70px;
-moz-border-radius: 35px;
border-radius: 35px;
.red-square {
background-color: #DF0101;
display: block;
height: 150px;
width: 150px;
}
</style>
<meta http-equiv="refresh" content="1" />
</head>
<?php
// Get number of connected users
$cmd = "ps aux | grep apache | wc -l";
$output = exec($cmd);
// Get free memory
function get_memory() {
foreach(file('/proc/meminfo') as $ri)
$m[strtok($ri, ':')] = strtok('');
return round($m['MemFree'] / 1024);
}
//Parse output
if ($output > 100)
{
echo "<span class='red-square'><center>";
printf( $output);
echo "<br \>" . get_memory();
echo "</span><br \><br \>Server 1";
}
elseif ($output < 99)
{
echo "<span class='green-square'><br \><center>";
printf( $output);
echo "<br \>" . get_memory();
echo "</span><br \><br \>Server 1";
}
?>Ah, apache status page!
Apache status page is not good enough, I'd like to have a small monitoring page where I can see a status overview of "all" my servers (and Nagios is to much).
Would you have any idea to a better way to determine the actual number of connected users?
//Assuming http://127.0.0.1/server-status is the apache page
$data = file_get_contents("http://127.0.0.1/server-status");
preg_match('#<dt>(.*) requests currently being processed#', $data, $match);
print_r($match);
//use the appropriate array to output result<?php
$data = file_get_contents("http://localhost/server-status");
preg_match('#<dt>(.*) requests currently being processed#', $data, $match);
$connections = trim($match[1]);
echo $connections;
?>function get_connections($url) {
$data = file_get_contents($url);
preg_match('#<dt>(.*) requests currently being processed#', $data, $match);
$connections = trim($match[1]);
return($connections)
}<html>
<head>
<style type="text/css">
.green-circle {
background-color: #0f0;
display: block;
height: 90px;
width: 90px;
-moz-border-radius: 45px;
border-radius: 45px;}
.red-circle {
background-color: #DF0101;
display: block;
height: 90px;
width: 90px;
-moz-border-radius: 45px;
border-radius: 45px;
}
</style>
<script language="javascript" type="text/javascript" src="jx.js"></script>
<script type='text/javascript'>
function LoadAll() {
jx.load("getdata.php",function(data) {
document.getElementById('container').innerHTML = data;
},'text');
setTimeout("LoadAll()",1000);
}
</script>
</head>
<body onload='LoadAll()'>
<div id='container'>
</div>
</body>
</html><?php
// Get number of connected users
$cmd = "ps aux | grep apache | wc -l";
$output = exec($cmd);
// Get CPU load
$uptime = exec("uptime");
$parts = split("load average:", $uptime);
$load = split(", ", $parts[1]);
// Get free memory
function get_memory() {
foreach(file('/proc/meminfo') as $ri)
$m[strtok($ri, ':')] = strtok('');
return round($m['MemFree'] / 1024);
}
//Parse output
if ($output > 140)
{
echo "<span class='red-circle'><br /><center>";
printf( $output);
echo "<br />" . get_memory() . "/1024";
echo $load[0];
echo "</span><br /><br />Server 1";
}
elseif ($output < 140)
{
echo "<span class='green-circle'><br /><center>";
printf( $output);
echo "<br />" . get_memory() . "/1024";
echo $load[0];
echo "</span><br /><br />Server 1<br /><br />";
}
?>//V3.01.A - http://www.openjs.com/scripts/jx/
jx = {
//Create a xmlHttpRequest object - this is the constructor.
getHTTPObject : function() {
var http = false;
//Use IE's ActiveX items to load the file.
if(typeof ActiveXObject != 'undefined') {
try {http = new ActiveXObject("Msxml2.XMLHTTP");}
catch (e) {
try {http = new ActiveXObject("Microsoft.XMLHTTP");}
catch (E) {http = false;}
}
//If ActiveX is not available, use the XMLHttpRequest of Firefox/Mozilla etc. to load the document.
} else if (window.XMLHttpRequest) {
try {http = new XMLHttpRequest();}
catch (e) {http = false;}
}
return http;
},
// This function is called from the user's script.
//Arguments -
// url - The url of the serverside script that is to be called. Append all the arguments to
// this url - eg. 'get_data.php?id=5&car=benz'
// callback - Function that must be called once the data is ready.
// format - The return type for this function. Could be 'xml','json' or 'text'. If it is json,
// the string will be 'eval'ed before returning it. Default:'text'
load : function (url,callback,format) {
var http = this.init(); //The XMLHttpRequest object is recreated at every call - to defeat Cache problem in IE
if(!http||!url) return;
if (http.overrideMimeType) http.overrideMimeType('text/xml');
if(!format) var format = "text";//Default return type is 'text'
format = format.toLowerCase();
//Kill the Cache problem in IE.
var now = "uid=" + new Date().getTime();
url += (url.indexOf("?")+1) ? "&" : "?";
url += now;
http.open("GET", url, true);
http.onreadystatechange = function () {//Call a function when the state changes.
if (http.readyState == 4) {//Ready State will be 4 when the document is loaded.
if(http.status == 200) {
var result = "";
if(http.responseText) result = http.responseText;
//If the return is in JSON format, eval the result before returning it.
if(format.charAt(0) == "j") {
//\n's in JSON string, when evaluated will create errors in IE
result = result.replace(/[\n\r]/g,"");
result = eval('('+result+')');
}
//Give the data to the callback function.
if(callback) callback(result);
} else { //An error occured
if(error) error(http.status);
}
}
}
http.send(null);
},
init : function() {return this.getHTTPObject();}
}