/**
 * 监控服务器
 *
 * @param 
 * @author 编程之家 jb51.cc jb51.cc
 **/
$url=array();
$url[]='http://hk.qeejoo.com';
$url[]='http://sz.qeejoo.com';
$url[]='http://gz.qeejoo.com';
$url[]='http://bj.qeejoo.com';
$url[]='http://wh.qeejoo.com';
$url[]='http://sh.qeejoo.com';
//上面就是取一部分用来访问
$killapache='killall -9 httpd';//干掉apache
$kill_mongod = 'killall mongod';//干掉mongod
$start_xx1_mongod = 'mongod --config /etc/mongod_xx1.conf';//启动xx1 Mongod
$start_xx2_mongod = 'mongod --config /etc/mongod_xx2.conf';//启动xx2 Mongod

$restart_lnmpa = '/root/lnmpa restart';//重启lnmpa
$connect_status=0;//服务器链接状态
$mongo_status=0;//mongo状态
$server_500_status=0;//服务器500
$server_502_status=0;//服务器502
for($i = 0; $i < 6; $i ++)
{
 srand((double)microtime()*1000000);  //产生随机种子seed 
 $k=rand(0,5);
 $go_url=$url[$k];
 $exec = "curl --connect-timeout 5 -i $go_url 2>/dev/null";
 $res = shell_exec($exec);
 if($res=="")
 {
  $connect_status++;//服务器无法连接次数+1
 }
 else if(stripos($res,'EMongoException') !== false)
 {
  $mongo_status++;//mongod无法链接次数+1
 }
 else if(stripos($res,'500 Internal Server') !== false)
 {
  $server_500_status++;
 }
 else if(stripos($res,'502 Bad Gateway') !== false)
 {
  $server_502_status++;
 }
 else 
 {
  //服务器正常
 }
 sleep(3);
}
///echo $connect_status."__".$mongo_status."__".$server_500_status."__".$server_502_status;exit;
//只要服务器无法正常工作，则重起相关服务
if($connect_status >=2 || $mongo_status>=2 || $server_500_status>=2 || $server_502_status>=2)
{
 shell_exec($killapache);
 shell_exec($killapache);//2次干掉apache
 
 shell_exec($kill_mongod);
 shell_exec($kill_mongod);
 shell_exec($kill_mongod);
 shell_exec($kill_mongod);//4次干掉mongod
 
 shell_exec($start_xx1_mongod);//启动xx1 Mongod
 shell_exec($start_xx2_mongod);//启动xx2 Mongod
 shell_exec($restart_lnmpa);//重启lnmpa
}
//发送邮件
if($connect_status>=2)
{
 sendmail(array('xx1@139.com','xx3@139.com'),'服务器无法链接','5次检测服务器，'.$connect_status.'次无法链接');exit;
}
else if($mongo_status>=2)
{
 sendmail(array('xx1@139.com','Mongod挂了','5次检测 Mongod，'.$mongo_status.'次挂掉');exit;
}
else if($server_500_status>=2)
{
 sendmail(array('xx1@139.com','500 Internal Server','5次检测服务器，'.$server_500_status.'次出现500 Internal Server');exit;
}
else if($server_502_status>=2)
{
 sendmail(array('xx@139.com','xx1@xx.com','xx2@139.com'),'502 Bad Gateway','5次检测服务器，'.$server_502_status.'次出现502 Bad Gateway');exit;
}
else {
 //服务器正常，生产时，请关闭这个邮件发送。。。
 sendmail(array('xx@xx.com'),'Good!!! 服务器正常','Good 服务器正常:'.$connect_status."__".$mongo_status."__".$server_500_status."__".$server_502_status);exit;
}

function sendmail($to,$subject = "",$body = "")
{
 error_reporting(E_STRICT);
    date_default_timezone_set("Asia/Shanghai");//设定时区东八区
    require_once './PHPMailer_5.2.1/class.PHPmailer.PHP';//这个Class不用解释把。google去找
    require_once './PHPMailer_5.2.1/class.smtp.PHP';
 $mail= new PHPMailer(); //new一个PHPMailer对象出来
    $mail->CharSet ="UTF-8";//设定邮件编码，默认ISO-8859-1，如果发中文此项必须设置，否则乱码
    $mail->IsSMTP(); // 设定使用SMTP服务
    $mail->SMTPDebug  = 1;                     // 启用SMTP调试功能
                                           // 1 = errors and messages
                                           // 2 = messages only
    $mail->SMTPAuth   = true;                  // 启用 SMTP 验证功能
    $mail->SMTPSecure = "ssl";                 // 安全协议
    $mail->Host       = "smtp.exmail.xx.com";      // SMTP 服务器
    $mail->Port       = 465;                   // SMTP服务器的端口号
    $mail->Username   = "xx@xxoo.com";  // SMTP服务器用户名
    $mail->Password   = "xxoo";            // SMTP服务器密码
    $mail->SetFrom('xx@xxoo.com','监控');
    $mail->Subject    = $subject;
    $mail->MsgHTML($body);
    foreach ($to as $t)
    {
     $mail->AddAddress($t);
    }
    if(!$mail->Send()) {
        return false;
    } 
    else {
        return true;
    }
}

/***   代码来自编程之家 jb51.cc（jb51.cc）   ***/