Created
October 5, 2010 20:38
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<?php | |
/** | |
* Compares all running instances to all reserved instances and reports | |
* utilization. Useful for making sure you're not wasting money. :P | |
* | |
* Requires EC2_CERT and EC2_PRIVATE_KEY environment variables to be set. | |
* | |
* @author Dave | |
* @date 2010-10-05 | |
*/ | |
echo "Comparing reserved instances to running instances... "; | |
$result = array(); | |
$output = array(); | |
// Get all reserved instance details. | |
exec("ec2-describe-reserved-instances | awk '{ print $3, $4, $9 }'", $output); | |
foreach ($output as $line) { | |
list($zone, $type, $quantity) = explode(" ", $line); | |
$result[$type][$zone]['reserved'] += $quantity; | |
$reserved += $quantity; | |
} | |
$output = array(); | |
// Get all running instance details. | |
exec("ec2-describe-instances | grep INSTANCE | grep running | awk '{ print $9, $11 }'", $output); | |
foreach ($output as $line) { | |
list($type, $zone) = explode(" ", $line); | |
$result[$type][$zone]['used']++; | |
$running++; | |
} | |
echo "\n\n"; | |
// Output the details. | |
foreach ($result as $type => $zones) { | |
echo "{$type}:\n"; | |
foreach ($zones as $zone => $details) { | |
echo " {$zone} " . ($details['used'] ?: 0) . "/" . ($details['reserved'] ?: 0) . "\n"; | |
} | |
echo "\n"; | |
} | |
echo "--\n"; | |
// Summarize. | |
$unused = max($reserved - $running, 0); | |
$unreserved = max($running - $reserved, 0); | |
echo "{$unused} unused reserved (" . ($unused ? "bad" : "good") . ")\n"; | |
echo "{$unreserved} unreserved running (" . ($unreserved ? "bad" : "good") .")\n"; | |
echo "\n"; | |
?> |
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