/* Sample Custom Check
Upload this PHP script to your server to a directory that is accessable via a domain and supports php.
Add a custom check script type check and put the full url to the php script and include your selected key in the path.
e.g. http://mydomain.com/check/serverstatus.php?key=1234abc
Your custom check can run any tests you would like, the only requirement is that it returns a json string with three variables:
result
error_message
response_time
The result should be true if the test passes and false if the test fails.
The error_message should be the error messsage you would like to log and be send in the email alerts.
The response time measures how long it took the script/check to execute.
*/
// User Configured Variables
$key = "1234abc";
$disk_percentage_threshold = "80"; // When disk usage reaches this perctange an error will be returned.
$disk_path = "/"; // The path to check.
$load_threshold = "5";
if ($_GET['key'] == $key ) {
$error_message = "";
$pass = true;
// Start Response Time
$mtime = microtime();
$mtime = explode(" ",$mtime);
$mtime = $mtime[1] + $mtime[0];
$start_time = $mtime;
// Disk Space Test
$disk_percentage_used = ((disk_free_space($disk_path) / disk_total_space($disk_path)))*100;
$disk_percentage_used = 100 - $disk_percentage_used;
if ($disk_percentage_used >= $disk_percentage_threshold) {
if($pass) {
$error_message = "Disk usage is at " . $disk_percentage_used . "%";
}
else {
$error_message = $error_message . ", Disk usage is at " . $disk_percentage_used . "%";
}
$pass = false;
}
// Load Test
$uptime = @exec('uptime');
preg_match("/averages?: ([0-9\.]+),[\s]+([0-9\.]+),[\s]+([0-9\.]+)/",$uptime,$avgs);
if ($avgs[1] >= $load_threshold) {
if($pass) {
$error_message = "Server Load is at ". $avgs[1];
}
else {
$error_message = $error_message . ", Server Load is at ". $avgs[1];
}
$pass = false;
}
// End Reponse Time
$mtime = microtime();
$mtime = explode(" ",$mtime);
$mtime = $mtime[1] + $mtime[0];
$end_time = $mtime;
$response_time = round(($end_time - $start_time), 3);
$results = array("result" => $pass, "error_message" =>$error_message, "response_time" => $response_time);
echo json_encode($results);
}
else {
echo "Access Denied";
}
?>
