基於PHP的即時聊天系統的故障監控與警報處理

<?php
// 获取CPU使用率
exec("top -b -n 1 | grep 'Cpu' | awk '{print $2}'",$cpu_usage);
$cpu_usage = trim($cpu_usage[0]);

// 获取内存和磁盘使用情况
exec("free -m | grep -E 'Mem|Swap'",$memory_usage);
$memory_usage_arr = explode(" ", trim($memory_usage[0]));
$disk_usage_arr = explode(" ", trim($memory_usage[1]));

$memory_usage = $memory_usage_arr[2] / $memory_usage_arr[1] * 100;
$disk_usage = $disk_usage_arr[2] / $disk_usage_arr[1] * 100;

// 将监测结果写入日志文件
$log = date("Y-m-d H:i:s")." CPU:".$cpu_usage."% Memory:".$memory_usage."% Disk:".$disk_usage."%";
file_put_contents("monitor.log", $log.PHP_EOL, FILE_APPEND);
?>

<?php
// 设置错误日志路径
ini_set('error_log','error.log');

// 进行一些操作，若出现错误则记录错误日志
$redis = new Redis();
if(!$redis->connect('127.0.0.1', 6379)){
    error_log("Failed to connect to Redis.");
}
?>

<?php
// 定义邮件接收人
$to = 'admin@example.com';

// 定义邮件标题和内容
$subject = '系统故障告警';
$body = '系统出现故障，请及时处理！';

// 发送邮件
mail($to, $subject, $body);
?>

<?php
// 定义短信接收手机号码
$mobile = '138********';

// 定义短信内容
$message = '系统故障，请及时处理！';

// 发送短信
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, "http://api.example.com/sms/send");
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query(array('mobile' => $mobile, 'message' => $message)));
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$result = curl_exec($ch);
curl_close($ch);
?>