Monitoring 'uptime' of more than one Server in PHP

[CPressland]

Hey Guys,

So I know how to display the 'uptime' command for one server, that's easy as pie. But what if I wanted to display uptime, load averages etc for more than one server, any way of integrating some kind of SSH into PHP or extracting the data some other way? (all servers running CentOS 5.5)

Thanks

Chris Pressland

[cybertimber2008]

http://www.google.com/search?q=php+server+uptime+load

I think for checking multiple servers, you'd just need a HTML page that requests the php script from each server, and displays all of the results.

Eg...

-html page

--php_to_server1 (pulls uptime, load)

--php_to_server2 (pulls uptime, load)

[DaveLegg Developer]

We use http://php.net/manual/en/book.ssh2.php extensively here, for cross-server execution, and file synchronisation. Would work well for what you need.

[CPressland]

Okay, so I can pretty much get everything there fine, I'd:

<?php
$connection = ssh2_connect('192.168.20.222', 2200);

if (ssh2_auth_password($connection, 'root', 'examplepass'))
?>

But then what would I add to do a 'uptime' command? I can see commands for basically every other form of communication, but not this.

[DaveLegg Developer]

http://www.php.net/manual/en/function.ssh2-exec.php Is what you'd want for that.

[CPressland]

Hey DaveLegg,

As you may have noticed in some of my previous threads the past few days on here, I'm a php n00b and I keep making trivial mistakes.

$connection = ssh2_connect('192.168.20.10', 2200);
if (ssh2_auth_password($connection, 'root', 'secret'))
$stream = ssh2_exec($connection, 'uptime');

Is what I have so far. Now, If I wanted this to connect to say 4 servers:

192.168.20.10

192.168.20.8

192.168.20.174

192.168.20.7

run uptime

then output as this

20.10 Stats: (output)

20.8 Stats: (output)

20.174 Stats: (output)

20.7 Stats: (output)

How'd I do it? lol... I suck. But I really am trying.

[Cupcakes]

If you don't feel like coding everything for yourself and/or want something nice and fancy: http://www.status2k.com/ or http://serverpulsehq.com/.

Both are developed by the same individual.

[CPressland]

  On 01/12/2010 at 19:19, Cupcakes said:

If you don't feel like coding everything for yourself and/or want something nice and fancy: http://www.status2k.com/ or http://serverpulsehq.com/.

Both are developed by the same individual.

None of my servers have Public IPs, and the data they serve is 100% Confidential, so everything is home grown i'm afraid.

[DaveLegg Developer]

$servers = array(
    array('ip'=>'192.168.20.10','user'=>'root','pass'=>'secret'),
    array('ip'=>'192.168.20.8','user'=>'root','pass'=>'secret'),
    array('ip'=>'192.168.20.174','user'=>'root','pass'=>'secret'),
    array('ip'=>'192.168.20.7','user'=>'root','pass'=>'secret'))

foreach($servers as $server)
{
    $connection = ssh2_connect($server['ip'], 2200);
    if (ssh2_auth_password($connection, $server['user'], $server['pass']))
    {
        $server['uptime'] = stream_get_contents(ssh2_exec($connection, 'uptime'));
    }
}

You should then have the uptimes stored in the $servers array. NOTE: Haven't tested this at all, its just straight from the top of my head, so may require a bit of tweaking.

[CPressland]

K, got it all tweaked, i'm fairly sure it's connecting properly etc, however what do I do to actually get it to output the information into a web browser.

What code would I need for that?

[DaveLegg Developer]

You could simply replace:

$server['uptime'] = stream_get_contents(ssh2_exec($connection, 'uptime'));

with:

echo $server['ip'].' '.stream_get_contents(ssh2_exec($connection, 'uptime'));