PHP教學-監測主機

<?php
// 監測的主機, 可以是 ip 或 hostname
$hosts = array(
               "192.168.1.10",
               "192.168.1.212"
               );

$admin_email = "XXXX@gmail.com";   // 管理員的電郵
$load_avg    = 2;   // 當 load average 達到這個數值, 通知管理員

// function for check server status
function server_check($addr) {
    if (($content  = file_get_contents("http://" . $addr . "/server-status.php")) !== False) {
        if ($content > $GLOBALS["load_avg"]) {
            mail($GLOBALS["admin_email"], "Server $addr Busy", "Server $addr Busy\nloading average: $content");
        }
    } else {
        mail($GLOBALS["admin_email"], "Server $addr Down", "Server $addr Down");
    }
}

foreach ($hosts as $value) {
    server_check($value);
}
?>