需求： 使用shell定制各種個性化告警工具，但需要統一化管理、規範化管理。
思路：指定一個腳本包，包含主程式、子程式、配置檔案、郵件引擎、輸出日志等。
主程式：作為整個腳本的入口，是整個系統的命脈。
配置檔案：是一個控制中心，用它來開關各個子程式，指定各個相關聯的日志檔案。
子程式：這個才是真正的監控腳本，用來監控各個名額。
郵件引擎：是由一個php程式來實作，它可以定義發郵件的伺服器、發郵件人以及收郵件人。
輸出日志：整個監控系統要有日志輸出。
要求：我們的機器角色多種多樣，但是所有機器上都要部署同樣的監控系統，也就說所有機器不管什麼角色，整個程式架構都是一緻的，不同的地方在于根據不同的角色，定制不同的配置檔案。
程式架構：
（主目錄 mon）
____________________|_______________________________
| | | | |
bin conf shares mail log
[main.sh] [ mon.conf] [load.sh 502.sh] [mail.php mail.sh] [ mon.log err.log ]
bin下是主程式
conf下是配置檔案
shares下是各個監控腳本
mail下是郵件引擎
log下是日志。
1. main.sh
- #!/bin/bash
- #Written by aming.
- # 是否發送郵件的開關
- export send=1 //對send進行環境變量指派：1為開，0為關。如果關閉則郵件不會發送，當你已經知道并着手時可以将此設定為0
- # 過濾ip位址
- export addr=`/sbin/ifconfig |grep -A1 'eth0' |grep addr: |awk '{print $2}'|awk -F: '{print $2}'` //對addr進行環境變量指派：addr=本機IP
- dir=`pwd` //dir為目前目錄路徑
- # 隻需要最後一級目錄名
- last_dir=`echo $dir|awk -F'/' '{print $NF}'` //awk出最後一段内容即目前目錄
- # 下面的判斷目的是，保證執行腳本的時候，我們在bin目錄裡，不然監控腳本、郵件和日志很有可能找不（但是我覺得這裡有bug，萬一main.sh的bin目錄是在其它路徑下呢）
- if [ $last_dir == "bin" ] || [ $last_dir == "bin/" ]; then
- conf_file="../conf/mon.conf" //如果目錄存在則進行變量指派（這裡我們需要将各個配置和腳本放在指定的目錄下
- else
- echo "you shoud cd bin dir //如果目錄不對則在視窗列印出提示，退出主程
- exit
- fi
- #目錄正确條件下
- exec 1>>../log/mon.log 2>>../log/err.log //标準輸出追加重定向到mon.log；錯誤追加到err.lo
- echo "`date +"%F %T"` load average" //列印出 時間 ，執行load.sh腳
- /bin/bash ../shares/load.sh
- #先檢查配置檔案中是否需要監控502
- if grep -q 'to_mon_502=1' $conf_file; then //grep -q 隻作為判斷條件，若1則對log進行環境變量指派，即mon.conf中的/data/log/xxx.xxx.com/access.log，執行502.sh腳本
- export log=`grep 'logfile=' $conf_file |awk -F '=' '{print $2}' |sed 's/ //g'`
- /bin/bash ../shares/502.sh
主程式隻添加了502監控，根據需求我們可以在mon.conf和main.sh中按模闆添加監控項目。但是需要将整個告警系統copy過去，保證系統的完整性。
2. 配置檔案 mon.conf
- ## to config the options if to monitor
- ## cdb 主要定義mysql的伺服器位址、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則監控，為0不監控
- to_mon_httpd=0
- ## php 如果是1則監控，為0不監控
- to_mon_php_socket=0
- ## http_code_502 需要定義通路日志的路徑
- to_mon_502=1
- logfile=/data/log/xxx.xxx.com/access.log
- ## request_count 定義日志路徑以及域名
- to_mon_request_count=0
- req_log=/data/log/www.discuz.net/access.log
- domainname=www.discuz.net
mon.conf配置檔案還是很好了解的。
3. load.sh
- #! /bin/bash
- ##Writen by aming##
- load=`uptime |awk -F 'average:' '{print $2}'|cut -d',' -f1|sed 's/ //g' |cut -d. -f1` //load是1分鐘負載的整數部分數值
- if [ $load -gt 20 ] && [ $send -eq "1" ] //如果負載大于20（具體看自己系統硬體條件）且開啟發送郵件則将“時間+負載”重定向到load.tmp，執行發送郵件腳本“$1 $2” $3，“$1 $2”是主題，$3是内容，跟mail.sh格式相同
- echo "$addr `date +%T` load is $load" >../log/load.tmp
- /bin/bash ../mail/mail.sh $addr\_load $load ../log/load.tmp
- echo "`date +%T` load is $load" //列印“時間+負載”
4. 502.sh
- d=`date -d "-1 min" +%H:%M` //将一分鐘前的時間指派給d
- c_502=`grep :$d: $log |grep ' 502 '|wc -l` //過濾統計/data/log/xxx.xxx.com/access.log中502的次數
- if [ $c_502 -gt 10 ] && [ $send == 1 ]; then //如果一分鐘前日志中502的次數超過10次，且郵件開，則将“IP+時間+502次數”重定向到502.tmp，發送郵件
- echo "$addr $d 502 count is $c_502">../log/502.tmp
- /bin/bash ../mail/mail.sh $addr\_502 $c_502 ../log/502.tmp
- echo "`date +%T` 502 $c_502" //列印“時間+502次數”
*擴充disk.sh
- rm -f ../log/disk.tmp
- for r in `df -h |awk -F '[ %]+' '{print $5}'|grep -v Use` //過濾出磁盤Use的三個資料
- do
- if [ $r -gt 90 ] && [ $send -eq "1" ] //如果有資料大于90，且郵件開，則将“時間+Use值追加重定向到disk.tmp（遺憾的是不清楚是哪個盤Use大于90）
- then
- echo "$addr `date +%T` disk useage is $r" >>../log/disk.tmp
- if [ -f ../log/disk.tmp ]
- df -h >> ../log/disk.tmp
- /bin/bash ../mail/mail.sh $addr\_disk $r ../log/disk.tmp
- echo "`date +%T` disk useage is nook"
- echo "`date +%T` disk useage is ok"
5. 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));
- $TO = array_merge($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");
- 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($this->pass))) {
- if (!$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 $this->smtp_error("sending . [EOM]");
- if (!$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");
- function smtp_sockopen_mx($address)
- $domain = ereg_replace("^.+@([^@]+)[ DISCUZ_CODE_5 ]quot;, "\1", $address);
- if (!@getmxrr($domain, $MXHOSTS)) {
- $this->log_write("Error: Cannot resolve MX \"".$domain."\"\n");
- 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> "));
- 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");
- 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");
- 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 (!@file_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);
- 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("^.*<(.+)>.*[ DISCUZ_CODE_5 ]quot;, "\1", $address);
- function smtp_debug($message)
- if ($this->debug) {
- echo $message;
- }
- $file = $argv[2];
- $smtpserver = "smtp.qq.com";//SMTP伺服器
- $smtpserverport = "25";//SMTP伺服器端口
- $smtpusermail = "[email protected]";//SMTP伺服器的使用者郵箱
- $smtpemailto = "[email protected]";//發送給誰
- $smtpuser = "1198658";//SMTP伺服器的使用者帳号
- $smtppass = "1212lss";//SMTP伺服器的使用者密碼 （注意的是：這個密碼是郵箱的獨立秘密，而不是郵箱的登陸密碼）
- $mailsubject = $argv[1];//郵件主題
- $mailbody = file_get_contents($file);//郵件内容
- $mailtype = "HTML";//郵件格式（HTML/TXT）,TXT為文本郵件
- $smtp = new smtp($smtpserver,$smtpserverport,true,$smtpuser,$smtppass);//這裡面的一個true是表示使用身份驗證,否則不使用身份驗證.
- //$smtp->debug = TRUE;//是否顯示發送的調試資訊
- $smtp->sendmail($smtpemailto, $smtpusermail, $mailsubject, $mailbody, $mailtype);
- ?>
好吧，不懂php，隻能将參數理一理。
要想發郵件的話，首先要有php支援，若你沒有安裝過lamp或者lnmp，則需要運作yum install -y php 安裝。
然後運作 php mail.php "郵箱主題寫在這裡" "/tmp/test.txt" 。其中，/tmp/test.txt 内容為郵件内容。
6. mail.sh
- log=$1 //$1是發送郵件時的$1，比如502.sh中的$addr\_502
- t_s=`date +%s` //記錄目前時間
- t_s2=`date -d "2 hours ago" +%s` //記錄2個小時之前的時間
- if [ ! -f /tmp/$log ] //如果檔案不存在，則将2個小時之前的時間重定向到這個檔案
- then
- echo $t_s2 > /tmp/$log
- fi
- t_s2=`tail -1 /tmp/$log|awk '{print $1}'` //如果檔案存在，将這個檔案最後一個時間指派給ts_2
- echo $t_s>>/tmp/$log //将目前時間追加重定向到這個檔案中
- v=$[$t_s-$t_s2] //記錄倆次時間的間隔
- echo $v
- if [ $v -gt 3600 ] //第一次執行這個腳本時，因為/tmp/$log的最後一個時間是2個小時之前，相當于7200,肯定是大于3600的，是以會先發送一份郵件；但如果後面一直報警（要注意的是我們在crontab任務計劃中是1分鐘執行一次main.sh），$v會小于3600也就是1小時，則腳本會不發送郵件，而對$log.txt裡的數值從0進行累加，直到大于10，再發送一封郵件，并重新将0重定向到$log.txt，等待下一輪10
- then
- /dir/to/php ../mail/mail.php "$1 $2" "$3"
- echo "0" > /tmp/$log.txt
- else
- if [ ! -f /tmp/$log.txt ]
- then
- echo "0" > /tmp/$log.txt
- fi
- 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
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