DroneMapper.com: Amazon EC2 PHP Integration (start/stop/execute remote commands on instance)

dronemapper_ec2quick.php

#!/usr/bin/php
<?php
/*
 * DroneMapper.com
 * Quick EC2 Integration Script
 * 2012-04-14
 *
 * This script works from the command line and allows you to spin up an AWS EC2
 * instance that you have already created via the AWS console.
 *
 * You'll need to download the AWS PHP SDK and add your AWS credentials. API/KEY
 * vim: set ts=4
 *
 */

if (empty($argv[1])) {
	print ("DroneMapper.com EC2 Integration.\n\n");
	print ("Usage: $argv[0] <arg1> <arg2> ...\n");
	print ("./EC2 [start/stop] [arg2] [arg3] [arg4]\n");
	print ("Example: ./EC2 start foo1 foo2 foo3\n");
	print ("\n");
	exit();
}
require_once 'sdk-1.5.3/sdk.class.php';
error_reporting(1);

/*
 * Required to allow the instance to spin up before executing commands.
 */
$sleeptime = '120';

/*
 * Change this to an instance you have already created and setup via AWS console or
 * AWS command line tools.
 */
$InstanceID = 'myinstance-id';

print "Instance: ".$InstanceID."\n";
print "Command: ".$argv[1]."\n";

/*
 * Example arguments from command line, used below for ssh/etc to new instance.
 */
$myarg2 = $argv[2];
print "My ARG2: ".$myarg2."\n";

$myarg3 = $argv[3];
print "My ARG3: ".$myarg3."\n";

$myarg4 = $argv[4];
print "My ARG4: ".$myarg4."\n";

header("Content-type: text/html; charset=utf-8");
$ec2 = new AmazonEC2();

/*
 * If "start" is found on command line args, fire off the instance.
 */
if($argv[1] == "start") {
	$response = $ec2->start_instances($InstanceID);
		if ($response->isOK()) {
			$start_time = date("Y-m-d H:i:s");
			print "Start Time: ".$start_time."\n";
			print ("Success: Starting EC2 Instance: ".$InstanceID."\n");
			sleep($sleeptime);

			/*
			 * Get $response, find new instance hostname.
			 */
			$response = $ec2->describe_instances(array(
				'Filter' => array(
					array('Name' => 'instance-id', 'Value' => "$InstanceID"),
				)
			));

			if (!($response->isOK())) {
				print "Error: Getting ".$InstanceID." Hostname!";
				return;
			}
			$hostname = $response->body->reservationSet->item->instancesSet->item->dnsName;
			print "EC2 Instance Hostname: ".$hostname."\n";

			/*
			 * Do stuff.
			 */
			print "----------- Example Commands -------------\n";
			shell_exec("/bin/mount -t nfs ".$hostname.":/mymount /mylocalmount");
			$ssh_cmd = shell_exec("/usr/bin/ssh myuser@".$hostname." -o TCPKeepAlive=yes -o ServerAliveInterval=60 -o StrictHostKeyChecking=no -i /myuser/myuser_key.pem '/usr/bin/php /myuser/myscript.php ".$myarg2." ".$myarg3." ".$myarg4."' ");
			print $ssh_cmd2;
			print "------------------------------------------\n";
      
			$testfile = "/mylocalmount/OrthoN-DroneMapper_20.tif";
			sleep(20);

			if(file_exists($testfile)) {
				$response = $ec2->stop_instances($InstanceID);
				$print ("Success: Local file ".$testfile." is here. Stopped Instance.\n");
			} else {
				$print ("Error: Local file ".$testfile." isn't here. Instance still running.\n");
			} 
		} else {
			print ("Error: Starting EC2 Instance: ".$InstanceID."\n");
			var_dump($response);
			exit();
		}
}

/*
 * Process 'stop' from command line.
 */
if($argv[1] == "stop") {
	$response = $ec2->stop_instances($InstanceID);
		if ($response->isOK()) {
			print ("Success: Stopping EC2 Instance: ".$InstanceID."\n");
		} else {
			print ("Error: Stopping EC2 Instance: ".$InstanceID."\n");
			var_dump($response);
			exit();
		}
}
?>