监控系统脚本

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告警系统

需求:使用shell定制各种个性化告警工具,但需要统一化管理、规范化管理。

思路:指定一个脚本包,包含主程序、子程序、配置文件、邮件引擎、输出日志等。

主程序:作为整个脚本的入口,是整个系统的命脉。

配置文件:是一个控制中心,用它来开关各个子程序,指定各个相关联的日志文件。

子程序:这个才是真正的监控脚本,用来监控各个指标。

邮件引擎:是由一个php程序来实现,它可以定义发邮件的服务器、发邮件人以及收邮件人。

输出日志:整个监控系统要有日志输出。

要求:我们的机器角色多种多样,但是所有机器上都要部署同样的监控系统,也就说所有机器不管什么角色,整个

     程序框架都是一致的,不同的地方在于根据不同的角色,定制不同的配置文件。

程序架构

                            ( 主目录 mon )

        ___________________________|__________________________________

       |            |              |              |                   |

      bin          conf         shares           mail                log

       |            |              |              |                   |

    [main.sh]  [mon.conf] [load.sh 502.sh] [mail.php mail.sh]  [mon.log err.log]

bin下是主程序

conf下是配置文件

shares下是各个监控脚本

mail下是邮件引擎

log下是日志


     

一、监控系统主脚本

告警系统,文档参考地址  http://www.apelearn.com/bbs/thread-8106-1-1.html

1、搭建系统架构目录

[[email protected] ~]# cd /usr/local/sbin

[[email protected] sbin]# mkdir mon

[[email protected] sbin]# cd mon

[[email protected] mon]# mkdir bin conf mail shares log

[[email protected] mon]# ls -l

总用量 20

drwxr-xr-x 2 root root 4096 12月  5 02:45 bin

drwxr-xr-x 2 root root 4096 12月  5 02:45 conf

drwxr-xr-x 2 root root 4096 12月  5 02:45 log

drwxr-xr-x 2 root root 4096 12月  5 02:45 mail

drwxr-xr-x 2 root root 4096 12月  5 02:45 shares

2、主脚本

[[email protected] mon]# cd bin

[[email protected] bin]# vim main.sh

#!/bin/bash

# 标记是否发送邮件的开关

export send=1

# 过滤出ip地址,用于在邮件中显示具体哪台机器告警

export addr=`/sbin/ifconfig |grep -A1 ‘eth0‘ |grep ‘addr:‘ |awk ‘{print $2}‘ |awk -F: ‘{print $2}‘`

# 只需要最后一级目录名

last_dir=`pwd|awk -F‘/‘ ‘{print $NF}‘`

# 下面的判断目的是,保证执行脚本的时候,我们在bin目录里,不然监控脚本、邮件和日志很有可能找不到

if [ $last_dir == "bin" ] || [ $last_dir == "bin/" ]; then

   conf_file="../conf/mon.conf"

else

   echo "you shoud cd bin dir"

   exit

fi

# 指定log文件输出

exec 1>>../log/mon.log 2>>../log/err.log

# 执行监控负载脚本

echo "`date +"%F %T"` load average"

/bin/bash ../shares/load.sh

# 先检查配置文件中是否需要监控502

if grep -q ‘to_mon_502=1‘ $conf_file; then

  # 过滤出日志路径

   export log=`grep ‘logfile=‘ $conf_file |awk -F ‘=‘ ‘{print $2}‘ |sed ‘s/ //g‘`

   # 执行脚本

/bin/bash  ../shares/502.sh

fi

解释说明:

"../conf/mon.conf" 因不确定mon路径,所以尽量使用相对路径

export 便于子shell识别该变量

../log/ 规范化管理,将所有日志写入同一个目录的不同文件下

sed ‘s/ //g‘ 去空格

3、mon配置文件

[[email protected] bin]# vim ../conf/mon.conf

## to config the options if to monitor

## cdb  主要定义mysql的服务器地址、端口以及user、password

to_mon_cdb=0   ##0 or 1, default 0,0 not monitor, 1 monitor

cdb_ip=10.20.3.13

cdb_port=3315

cdb_user=username

cdb_pass=passwd

## httpd  如果是1则监控,为0不监控

to_mon_httpd=0

## php  如果是1则监控,为0不监控

to_mon_php_socket=0

## http_code_502  需要定义访问日志的路径

to_mon_502=1

logfile=/data/log/xxx.xxx.com/access.log

## request_count  定义日志路径以及域名

to_mon_request_count=0

req_log=/data/log/www.discuz.net/access.log

domainname=www.discuz.net


二、监控子脚本load.sh  502.sh

4、监控负载脚本load.sh

[[email protected] bin]# vim ../shares/load.sh

#!/bin/bash

load=`uptime |awk -F‘load average:‘ ‘{print $2}‘ |cut -d, -f1 |sed ‘s/ //g‘ |cut -d. -f1`

if [ "$load" -gt 20 ] && [ "$send" -eq 1 ]; then

   echo "$addr `date +%T` load is $load" >../log/load.tmp

   /bin/bash ../mail/mail.sh $addr\_load $load ../log/load.tmp

fi

echo "`date +%T` load is $load"

5、监控502脚本502.sh

[[email protected] bin]# vim ../shares/502.sh

#!/bin/bash

# 一分钟前的小时和分钟

d=`date -d "-1 min" +%H:%M`

# 统一502个数

c_502=`grep :$d:  $log  |grep ‘ 502 ‘|wc -l`

if [ $c_502 -gt 10 ] && [ $send == 1 ]; then

    echo "$addr $d 502 count is $c_502">../log/502.tmp

    # 执行发邮件脚本

    /bin/bash ../mail/mail.sh $addr\_502 $c_502 ../log/502.tmp

fi

# 记录日志

echo "`date +%T` 502 $c_502"



三、邮件脚本

6、邮件脚本

[[email protected] bin]# vim ../mail/mail.php

<?php

class Smtp

{

    /* Public Variables */

    var $smtp_port;

    var $time_out;

    var $host_name;

    var $log_file;

    var $relay_host;

    var $debug;

    var $auth;

    var $user;

    var $pass;

    /* Private Variables */

    var $sock;

    /* Constractor */

    function Smtp($relay_host = "", $smtp_port = 25,$auth = false,$user,$pass)

    {

        $this->debug = FALSE;

        $this->smtp_port = $smtp_port;

        $this->relay_host = $relay_host;

        $this->time_out = 30; //is used in fsockopen()

        #

        $this->auth = $auth;//auth

        $this->user = $user;

        $this->pass = $pass;

        #

        $this->host_name = "localhost"; //is used in HELO command

        $this->log_file = "";

        $this->sock = FALSE;

    }

    /* Main Function */

    function sendmail($to, $from, $subject = "", $body = "", $mailtype, $cc = "", $bcc = "", $additional_headers = "")

    {

        $mail_from = $this->get_address($this->strip_comment($from));

        $body = ereg_replace("(^|(\r\n))(\.)", "\1.\3", $body);

        $header = "MIME-Version:1.0\r\n";

        if($mailtype=="HTML"){

            $header .= "Content-Type:text/html\r\n";

        }

        $header .= "To: ".$to."\r\n";

        if ($cc != "") {

            $header .= "Cc: ".$cc."\r\n";

        }

        $header .= "From: $from<".$from.">\r\n";

        $header .= "Subject: ".$subject."\r\n";

        $header .= $additional_headers;

        $header .= "Date: ".date("r")."\r\n";

        $header .= "X-Mailer:By Redhat (PHP/".phpversion().")\r\n";

        list($msec, $sec) = explode(" ", microtime());

        $header .= "Message-ID: <".date("YmdHis", $sec).".".($msec*1000000).".".$mail_from.">\r\n";

        $TO = explode(",", $this->strip_comment($to));

        if ($cc != "") {

            $TO = array_merge($TO, explode(",", $this->strip_comment($cc)));

        }

 

        if ($bcc != "") {

            $TO = array_merge($TO, explode(",", $this->strip_comment($bcc)));

        }

        $sent = TRUE;

        foreach ($TO as $rcpt_to) {

            $rcpt_to = $this->get_address($rcpt_to);

 

            if (!$this->smtp_sockopen($rcpt_to)) {

                $this->log_write("Error: Cannot send email to ".$rcpt_to."\n");

                $sent = FALSE;

                continue;

            }

            if ($this->smtp_send($this->host_name, $mail_from, $rcpt_to, $header, $body)) {

                $this->log_write("E-mail has been sent to <".$rcpt_to.">\n");

            } else {

                $this->log_write("Error: Cannot send email to <".$rcpt_to.">\n");

                $sent = FALSE;

            }

            fclose($this->sock);

            $this->log_write("Disconnected from remote host\n");

        }

        return $sent;

    }

/* Private Functions */

   function smtp_send($helo, $from, $to, $header, $body = "")

    {

        if (!$this->smtp_putcmd("HELO", $helo)) {

            return $this->smtp_error("sending HELO command");

        }

        #auth

        if($this->auth){

            if (!$this->smtp_putcmd("AUTH LOGIN", base64_encode($this->user))) {

                return $this->smtp_error("sending HELO command");

            }

            if (!$this->smtp_putcmd("", base64_encode($this->pass))) {

                return $this->smtp_error("sending HELO command");

            }

        }

        #

        if (!$this->smtp_putcmd("MAIL", "FROM:<".$from.">")) {

            return $this->smtp_error("sending MAIL FROM command");

        }

        if (!$this->smtp_putcmd("RCPT", "TO:<".$to.">")) {

            return $this->smtp_error("sending RCPT TO command");

        }

        if (!$this->smtp_putcmd("DATA")) {

            return $this->smtp_error("sending DATA command");

        }

        if (!$this->smtp_message($header, $body)) {

            return $this->smtp_error("sending message");

        }

        if (!$this->smtp_eom()) {

            return $this->smtp_error("sending <CR><LF>.<CR><LF> [EOM]");

        }

        if (!$this->smtp_putcmd("QUIT")) {

            return $this->smtp_error("sending QUIT command");

        }

        return TRUE;

    }

 

    function smtp_sockopen($address)

    {

        if ($this->relay_host == "") {

            return $this->smtp_sockopen_mx($address);

        } else {

            return $this->smtp_sockopen_relay();

        }

    }

    function smtp_sockopen_relay()

    {

        $this->log_write("Trying to ".$this->relay_host.":".$this->smtp_port."\n");

        $this->sock = @fsockopen($this->relay_host, $this->smtp_port, $errno, $errstr, $this->time_out);

        if (!($this->sock && $this->smtp_ok())) {

            $this->log_write("Error: Cannot connenct to relay host ".$this->relay_host."\n");

            $this->log_write("Error: ".$errstr." (".$errno.")\n");

            return FALSE;

        }

        $this->log_write("Connected to relay host ".$this->relay_host."\n");

        return TRUE;

    }

    function smtp_sockopen_mx($address)

    {

        $domain = ereg_replace("^[email protected]([^@]+)$", "\1", $address);

        if ([email protected]($domain, $MXHOSTS)) {

            $this->log_write("Error: Cannot resolve MX \"".$domain."\"\n");

            return FALSE;

        }

        foreach ($MXHOSTS as $host) {

            $this->log_write("Trying to ".$host.":".$this->smtp_port."\n");

           $this->sock = @fsockopen($host, $this->smtp_port, $errno, $errstr, $this->time_out);

            if (!($this->sock && $this->smtp_ok())) {

                $this->log_write("Warning: Cannot connect to mx host ".$host."\n");

                $this->log_write("Error: ".$errstr." (".$errno.")\n");

               continue;

            }

            $this->log_write("Connected to mx host ".$host."\n");

            return TRUE;

        }

        $this->log_write("Error: Cannot connect to any mx hosts (".implode(", ", $MXHOSTS).")\n");

       return FALSE;

    }

    function smtp_message($header, $body)

    {

      fputs($this->sock, $header."\r\n".$body);

        $this->smtp_debug("> ".str_replace("\r\n", "\n"."> ", $header."\n> ".$body."\n> "));

        return TRUE;

    }

    function smtp_eom()

   {

        fputs($this->sock, "\r\n.\r\n");

        $this->smtp_debug(". [EOM]\n");

        return $this->smtp_ok();

    }

    function smtp_ok()

   {

        $response = str_replace("\r\n", "", fgets($this->sock, 512));

        $this->smtp_debug($response."\n");

        if (!ereg("^[23]", $response)) {

            fputs($this->sock, "QUIT\r\n");

            fgets($this->sock, 512);

            $this->log_write("Error: Remote host returned \"".$response."\"\n");

            return FALSE;

        }

        return TRUE;

    }

    function smtp_putcmd($cmd, $arg = "")

    {

        if ($arg != "") {

           if($cmd=="") $cmd = $arg;

            else $cmd = $cmd." ".$arg;

        }

        fputs($this->sock, $cmd."\r\n");

        $this->smtp_debug("> ".$cmd."\n");

        return $this->smtp_ok();

    }

    function smtp_error($string)

    {

        $this->log_write("Error: Error occurred while ".$string.".\n");

        return FALSE;

    }

    function log_write($message)

    {

        $this->smtp_debug($message);

        if ($this->log_file == "") {

                return TRUE;

        }

        $message = date("M d H:i:s ").get_current_user()."[".getmypid()."]: ".$message;

        if ([email protected]_exists($this->log_file) || !($fp = @fopen($this->log_file, "a"))) {

            $this->smtp_debug("Warning: Cannot open log file \"".$this->log_file."\"\n");

            return FALSE;;

        }

        flock($fp, LOCK_EX);

        fputs($fp, $message);

        fclose($fp);

        return TRUE;

    }

    function strip_comment($address)

   {

        $comment = "\([^()]*\)";

       while (ereg($comment, $address)) {

            $address = ereg_replace($comment, "", $address);

        }

        return $address;

    }

    function get_address($address)

    {

        $address = ereg_replace("([ \t\r\n])+", "", $address);

        $address = ereg_replace("^.*<(.+)>.*$", "\1", $address);

        return $address;

    }

    function smtp_debug($message)

    {

        if ($this->debug) {

        echo $message;

        }

    }

}

$file = $argv[2];

$smtpserver = "smtp.qq.com";

$smtpserverport = "25";

$smtpusermail = "[email protected]";

$smtpemailto = "[email protected]";

$smtpuser = "1198658";

$smtppass = "1212lss";

$mailsubject = $argv[1];

$mailbody = file_get_contents($file);

$mailtype = "HTML";

$smtp = new smtp($smtpserver,$smtpserverport,true,$smtpuser,$smtppass);

$smtp->sendmail($smtpemailto, $smtpusermail, $mailsubject, $mailbody, $mailtype);

?>

解释说明:

$smtpserver = "smtp.qq.com"; //SMTP服务器

$smtpserverport = "25"; //SMTP服务器端口

$smtpusermail = "[email protected]"; //SMTP服务器的用户邮箱

$smtpemailto = "[email protected]"; //发送给谁

$smtpuser = "1198658"; //SMTP服务器的用户帐号

$smtppass = "1212lss"; //SMTP服务器的用户密码(独立密码)

$mailsubject = $argv[1]; //邮件主题

$mailbody = file_get_contents($file); //邮件内容

$mailtype = "HTML"; //邮件格式(HTML/TXT),TXT为文本邮件

$smtp = new smtp($smtpserver,$smtpserverport,true,$smtpuser,$smtppass);

//这里面的一个true是表示使用身份验证,否则不使用身份验证.

//$smtp->debug = TRUE;//是否显示发送的调试信息

$smtp->sendmail($smtpemailto, $smtpusermail, $mailsubject, $mailbody, $mailtype);

?>

要想发邮件的话,首先要有php支持,若你没有安装过lamp或者lnmp,则需要运行yum install -y php 安装。

然后运行mail.php"邮箱主题写在这里" "/tmp/test.txt"其中,/tmp/test.txt内容为邮件内容。

开启SMTP服务(调用远程SMTP)

      打开qq邮箱

技术分享

安装php环境

[[email protected] bin]# yum install -y php

7、mail.sh

[[email protected] bin]# vim ../mail/mail.sh

#!/bin/bash

log=$1

t_s=`date +%s`

t_s2=`date -d "2 hours ago" +%s`

# 文件不存在,写入时间并创建文件

[ ! -f /tmp/$log ] && echo $t_s2 > /tmp/$log

# 从文件中读取出时间

t_s2=`tail -1 /tmp/$log|awk ‘{print $1}‘`

echo $t_s >> /tmp/$log

v=$[$t_s-$t_s2]

echo $v

 

if [ $v -gt 3600 ]; then

    /dir/to/php ../mail/mail.php "$1 $2" "$3"

    echo "0" > /tmp/$log.txt

else

    [ ! -f /tmp/$log.txt ] && echo "0" > /tmp/$log.txt

    nu=`cat /tmp/$log.txt`

    nu2=$[$nu+1]

    echo $nu2>/tmp/$log.txt

    if [ $nu2 -gt 10 ]; then

        /dir/to/php ../mail/mail.php "trouble continue 10 min $1  $2 " "$3"

        echo "0" > /tmp/$log.txt

    fi

fi


四、邮件脚本收敛讲解

第一次的时候

 /tmp/$log是不存在的,t_s2是两小时前的时间就写进了/tmp/$log;

      $v的值大于或等于7200;

      然后发邮件,并把0写入/tmp/$log.txt里(作为告警收敛的标记)

第二次的时候    

/tmp/$log已经存在了,这时t_s2里是第一次的两小时前的时间;

    $v的值小于等于60;

    这时/tmp/$log.txt已经存在,则把/tmp/$log.txt里的值取出来加1,再写进去;

    如果这个值大于10才会发邮件;

这样就反复执行,每次$v的值都是60;直到/tmp/$log.txt里的值为11,这时大于10了,就发送邮件,

这时也把/tmp/$log.txt清空为0,这也就相当于完成了一个轮回。


五、监控系统整体回顾

8、加入任务计划

[[email protected] bin]# crontab -e

* * * * * cd /usr/local/sbin/mon/bin; /bin/bash main.sh

总结

mon程序实现本机监控

优点

1、不会因为客户端服务端通信出现故障导致告警收不到,每台机器都有自己的监控告警体系,永远都在执行,不会因为某一台机器挂掉导致其他机器监控不顺利。

2、初创公司,服务器比较少的情况下,不愿意搭建大型监控系统的情况下,临时使用的解决方案。

--------------------------------------------------------------------------------------------------------------------------

----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------


监控磁盘脚本

假设:

需要监控的盘符有/bootdb1

技术分享

思路:监控数字

首先过滤出数字

[[email protected] mon]# vim shares/disk.sh

#!/bin/bash

rm -f ../log/disk.tmp

for r in `df -h |awk -F ‘[ %]+‘ ‘{print $5}‘ |grep -v ‘Use‘`

do

    if [ "$r" -gt 90 ] && [ "$send" -eq "1" ]; then

        echo "$addr `date +%T` disk useage is $r" >>../log/disk.tmp

    fi

done

 

if [ -f ../log/disk.tmp ]; then

    df -h >> ../log/disk.tmp

    /bin/bash ../mail/mail.sh $addr\_disk $r ../log/disk.tmp

    echo "`date +%T` disk useage not ok"

else

    echo "`date +%T` disk useage is ok"

fi





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