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MongoDB and PHP: My Famous 5-Minute Tutorial

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MongoDB and PHP: My Famous 5-Minute Tutorial

· Database Zone ·
Free Resource

Read the 2019 State of Database DevOps Report for the very latest insights

Did you ever wanted to integrate MongoDB monitoring with a third party service?
Did you wanted to integrate MongoDB performance counters with your load stress environment?
This 5 minutes tutorial will help you expose these details to any third party service or application using a simple JSON service, PHP and MongoDB:
  1. Install Apache and PHP and php-devel: sudo yum -y install httpd php php-devel php-pear
  2. Install PHP MongoDB Driver: sudo pecl install mongo
  3. Add extension=mongo.so to you /etc/php.ini
  4. Create a short monitoring code as mongo.php and place it at /var/www/html/:
 header('Cache-Control: no-cache, must-revalidate');
header('Expires: Mon, 26 Jul 1997 05:00:00 GMT');
header('Content-type: application/json;charset=UTF-8');

class Monitor {
public $VirtualMemory_MB;
public $PageFaults;
public $CurrentConnections;
public $NetworkIO_In_MB;
public $NetworkIO_Out_MB;
public $SpeedIO_Avg_ms;
public $LockRatio_Per;
public $ReadersLocked;
public $WritersLocked;
public $ObjectsInDatabase;
public $DatabaseDataSize_MB;
public $DatabaseIndexSize_MB;
public $IndexMissRatio_Per;
public $CursorsTimedOut;
public $DeleteSelectRatio_Per;
public $InsertSelectRatio_Per;
public $UpdateSelectRatio_Per;
}

if (!isset($_REQUEST['db'])) {
header($_SERVER['SERVER_PROTOCOL'] . ' 500 Internal Server Error', true, 500);
echo json_encode(array('status'=>0,'message'=>'db is missing'));
exit;
}
$databaseName = $_REQUEST['db'];


// connect
$m = new MongoClient();

// select a database
$db = $m->$databaseName;
$ret = $db->execute('db.stats();');

$result = new Monitor;
$result->ObjectsInDatabase = $ret["retval"]["objects"];
$result->DatabaseDataSize_MB = $ret["retval"]["dataSize"];
$result->DatabaseIndexSize_MB = $ret["retval"]["indexSize"];
//var_dump($ret);

$ret = $db->execute('db.serverStatus();');
$result->VirtualMemory_MB = $ret["retval"]["mem"]["virtual"];
$result->PageFaults = $ret["retval"]["extra_info"]["page_faults"];
$result->CurrentConnections = $ret["retval"]["connections"]["current"];
$result->NetworkIO_In_MB = $ret["retval"]["network"]["bytesIn"]/1000000;
$result->NetworkIO_Out_MB = $ret["retval"]["network"]["bytesOut"]/1000000;
$result->SpeedIO_Avg_ms = $ret["retval"]["backgroundFlushing"]["average_ms"];
$result->LockRatio_Per = $ret["retval"]["globalLock"]["lockTime"]/$ret["retval"]["globalLock"]["totalTime"]*100;
$result->ReadersLocked = $ret["retval"]["globalLock"]["currentQueue"]["readers"];
$result->WritersLocked = $ret["retval"]["globalLock"]["currentQueue"]["writers"];
$result->IndexMissRatio_Per = $ret["retval"]["indexCounters"]["btree"]["missRatio"];
$result->CursorsTimedOut = $ret["retval"]["cursors"]["timedOut"];
$result->DeleteSelectRatio_Per = $ret["retval"]["opcounters"]["delete"]/$ret["retval"]["opcounters"]["query"]*100;
$result->InsertSelectRatio_Per = $ret["retval"]["opcounters"]["insert"]/$ret["retval"]["opcounters"]["query"]*100;
$result->UpdateSelectRatio_Per = $ret["retval"]["opcounters"]["update"]/$ret["retval"]["opcounters"]["query"]*100;

echo json_encode($result);
?>
Bottom Line
You MongoDB is ready for monitoring by an external service: http://localhost/mongo.php





Read the 2019 State of Database DevOps Report for latest insights into DevOps adoption among SQL Server professionals, and the benefits and challenges of including the database in DevOps initiatives

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