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Check AmazonEC2 WebSite status and if server is down send notification and restart instance

/ Published in: PHP
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Script File launched every 3 minutes to check WebSite status.
It uses AWSSDKforPHP library http://docs.amazonwebservices.com/AWSSdkDocsPHP/latest/DeveloperGuide/php-dg-setup.html

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  1. <?php
  2.  
  3. require_once('AWSSDKforPHP/sdk.class.php');
  4.  
  5. function checkOnline($domain) {
  6.    $curlInit = curl_init($domain);
  7.    curl_setopt($curlInit,CURLOPT_CONNECTTIMEOUT,10);
  8.    curl_setopt($curlInit,CURLOPT_HEADER,true);
  9.    curl_setopt($curlInit,CURLOPT_NOBODY,true);
  10.    curl_setopt($curlInit,CURLOPT_RETURNTRANSFER,true);
  11.  
  12.    //get answer
  13.    $response = curl_exec($curlInit);
  14.  
  15.    curl_close($curlInit);
  16.    if ($response) return true;
  17.    return false;
  18. }
  19.  
  20. function sendNotificationEmail($message){
  21.     $email = new AmazonSES();
  22.     $response = $email->send_email(
  23.             '[email protected]', // Source (aka From) Authorized Amazon SES sender
  24.             array( // Destination (aka To)
  25.                 'ToAddresses' => array(
  26.                     "[email protected]" // Email to send notifications
  27.  
  28.                 ),
  29.  
  30.             ),
  31.             array( // Message (long form)
  32.                 'Subject' => array(
  33.                     'Data' => 'WebSite not available',
  34.                     'Charset' => 'UTF-8'
  35.                 ),
  36.                 'Body' => array(
  37.                     'Text' => array(
  38.                         'Data' => utf8_encode($message), 
  39.                         'Charset' => 'UTF-8'  
  40.                     ),
  41.                     'Html' => array(
  42.                         'Data' => utf8_encode($message),
  43.                         'Charset' => 'UTF-8' 
  44.                     )
  45.                 )
  46.             ),
  47.             array( // Optional parameters
  48.                 //'ReplyToAddresses' => array('[email protected]', '[email protected]')
  49.             )
  50.         );
  51.  
  52.         // Success?
  53.         return $response->isOK();
  54.  
  55.  
  56. }
  57.  
  58. $Instances = array(
  59.     'WebSite1'=>array(
  60.         'instanceId'=>'i-1923cb7e',
  61.         'testUrl'=>'http://www.domain1.com',
  62.  
  63.     ),
  64.     'WebSite2'=>array(
  65.         'instanceId'=>'i-32243d57',
  66.         'testUrl'=>'http://www.domain2.com',
  67.  
  68.     ),
  69.     'WebSite3'=>array(
  70.         'instanceId'=>'i-ddcfc1bb',
  71.         'testUrl'=>'http://www.domain3.com',
  72.  
  73.     )
  74.  
  75.     );
  76. $ec2 = new AmazonEC2();
  77.  
  78. foreach ($Instances as $key => $val){
  79.  
  80.     echo $key." => ". $val["instanceId"] ;
  81.  
  82.     if(checkOnline($val["testUrl"])) { 
  83.         echo "OnLine"; 
  84.  
  85.     }
  86.     else{
  87.         $response = $ec2->reboot_instances($val["instanceId"]);
  88.         echo "OffLIne";
  89.         if(!$response->isOK()){
  90.             sendNotificationEmail("The WebSite ".$key." is not available and it couldn't be restarted \n please check status ".$val["testUrl"]);
  91.  
  92.         }
  93.         else{
  94.             sendNotificationEmail("The WebSite ".$key." and it's been restarted \n check status here ".$val["testUrl"]);
  95.  
  96.         }
  97.     }
  98.  
  99. }
  100.  
  101.  
  102. //You may add crontab using : */3    *    *    *    *  wget --spider 'http://www.yourdomain.com/scriptJob.php'
  103.  
  104.  
  105.  
  106.  
  107.  
  108. ?>

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