1、Linux下nginx+nagios 監(jiān)控平臺(tái)搭建】隨著linux服務(wù)器可用性、穩(wěn)定性逐步增強(qiáng)，企業(yè)對(duì)線上服務(wù)也要求越來(lái)越嚴(yán)格，需要有專門的監(jiān)控系統(tǒng)監(jiān)控服務(wù)的正常運(yùn)轉(zhuǎn)，并有問(wèn)題及時(shí)發(fā)郵件、報(bào)警給linux SA。我們大多數(shù)nagios、cacti監(jiān)控都基于apache搭建，今天我們講一種新平臺(tái)搭建nginx平臺(tái)的nagios監(jiān)控！一、系統(tǒng)運(yùn)行環(huán)境：服務(wù)器系統(tǒng)版本：Centos 5.3x64nginx版本：nginx-0.8.54nagios版本：nagios-3.2.3二、下載所需包:所有安裝所需的源碼包：本站點(diǎn)集成下載：Nginx 安裝請(qǐng)參考： 【nginx安裝】nginx安裝完畢后。三、正

2、式安裝nagios：創(chuàng)建nagios用戶和組，并把www加入nagios管理組：useraddnagios &groupadd nagcmd & usermod -g nagcmd nagios & usermod -g nagcmd wwwcd /usr/scr & tar xzf nagios-3.2.3.tar.gz & cd nagios-3.2.3 & ./configure -with-command-group=nagcmd -prefix=/usr/local/nagios & make all & make install &make install-init & make

3、install-config & make install-commandmodenagios安裝完畢：驗(yàn)證程序是否被正確安裝。切換目錄到安裝路徑（這里是/usr/local/nagios）,看是否存在 etc、bin、 sbin、 share、 var這五個(gè)目錄，如果存在則可以表明程序被正確的安裝到系統(tǒng)了。接下來(lái)編譯并安裝nagios插件 nagios-pluginscd /usr/src &tar zxvf nagios-plugins-1.4.13.tar.gz &cd nagios-plugins-1.4.13 &./configure -perfix=/usr/local/nagio

4、s -with-nagios-user=nagios -with-nagios-group=nagios& make & make install插件安裝完畢！ls /usr/local/nagios/libexec會(huì)顯示安裝的插件文件,即所有的插件都安裝在libexec這個(gè)目錄下。四、創(chuàng)建一個(gè)nagiosadmin用戶：用于Nagios的WEB接口登錄。記下你所設(shè)置的登錄口令，一會(huì)兒你會(huì)用到它這里要借助于apche的htpasswd，在有apache機(jī)器上執(zhí)行下列命令/usr/local/apache2/bin/htpasswd -c /usr/local/nagios/etc/htpass

5、wd nagiosadmin輸入兩次一樣的密碼即可。啟動(dòng)nagios ；chkconfig add nagios 添加到service 中，chkconfig nagios level 35 on 設(shè)置成開機(jī)啟動(dòng)。【把selinux、iptables關(guān)閉，或者更改iptables策略需要訪問(wèn)nagios】五、安裝perl fcgi模塊：【首先得安裝php并編譯fastcGI模塊】安裝php可參考 （1）、安裝FCGIcd /usr/src & tar -zxvf FCGI-0.67.tar.gz &cd FCGI-0.67 & perl Makefile.PL & make & make in

6、stall(2)、安裝FCGI-ProcManager:cd ./ & tar -xzxf FCGI-ProcManager-0.18.tar.gz &cd FCGI-ProcManager-0.18 & perl Makefile.PL &make & make install安裝完畢即可。mkdir -p /usr/local/nagios/share/nagios &ln -s /usr/local/nagios/share/images /usr/local/nagios/share/nagios/images &ln -s /usr/local/nagios/share/styles

7、heets /usr/local/nagios/share/nagios/stylesheets 避免無(wú)法顯示圖片。接下來(lái)配置cgi腳本、nginx配置文件：cd/usr/local/nagios/bin/ 下新建文件，并寫入以下內(nèi)容 vi perl-cgi.pl#!/usr/bin/perluse FCGI;#perl -MCPAN -e install FCGIuse Socket;#this keeps the program alive or something after execing perl scriptsEND()BEGIN()*CORE:GLOBAL:exit=subdie

8、“fakeexitnrc=”.shift().”n”;evalqexit;if($)exitunless$=/fakeexit/;&main;sub main #$socket = FCGI:OpenSocket( “:3461, 10 ); #use IP sockets$socket= FCGI:OpenSocket(“/var/run/nagios.sock”,10);#use UNIX sockets user running this script must have w access to the nginx folder!$request= FCGI:Request(*STDIN

9、,*STDOUT,*STDERR,%ENV,$socket);if($request)request_loop();FCGI:CloseSocket($socket);sub request_loop while($request-Accept()=0)#processing any STDIN input from WebServer (for CGI-GET actions)$env=$request-GetEnvironment();$stdin_passthrough=”;$req_len=0+$ENVCONTENT_LENGTH;if($ENVREQUEST_METHODeqGET)

10、$stdin_passthrough.=$ENVQUERY_STRING;#running the cgi appif(-x $ENVSCRIPT_FILENAME)&#can I execute this?(-s$ENVSCRIPT_FILENAME)&#Is this file empty?(-r $ENVSCRIPT_FILENAME)#can I read this file?)#/perlipc.html#Safe-Pipe-Opensopen$cgi_app,-|,$ENVSCRIPT_FILENAME,$stdin_passthroug

11、horprint(“Content-type: text/plainrnrn”);print“Error: CGI app returned no output Executing $ENVSCRIPT_FILENAME failed !n”;if($cgi_app)print;close$cgi_app;elseprint(“Content-type: text/plainrnrn”);print“Error: No such CGI app $req_len $ENVCONTENT_LENGTH $ENVREQUEST_METHOD $ENVSCRIPT_FILENAME may not

12、exist or is not executable by this process.n”; 設(shè)置權(quán)限chmod +x perl-cgi.pl 即可！以下是我的nginx.conf文件server內(nèi)容：serverlisten 80;server_name 9;root /usr/local/nagios/share;index index.php;auth_basic “You Name”;auth_basic_user_file /usr/local/nagios/etc/htpasswd;log_format nagios $remote_addr $remote_

13、user $time_local “$request” $status $body_bytes_sent “$http_referer” ”$http_user_agent” $http_x_forwarded_for;access_log /usr/local/nginx/nagios.log nagios;location .*.(php|php5)?$#fastcgi_pass unix:/tmp/php-cgi.sock;fastcgi_pass :9000;fastcgi_index index.php;include fcgi.conf;location .cgi

14、$ root /usr/local/nagios/sbin;rewrite /nagios/cgi-bin/(.*).cgi /$1.cgi break;fastcgi_index index.cgi;fastcgi_pass unix:/var/run/nagios.sock;fastcgi_param SCRIPT_FILENAME /usr/local/nagios/sbin$fastcgi_script_name;fastcgi_param QUERY_STRING $query_string;fastcgi_param REMOTE_ADDR $remote_addr;fastcgi

15、_param REMOTE_PORT $remote_port;fastcgi_param REQUEST_METHOD $request_method;fastcgi_param REQUEST_URI $request_uri;fastcgi_param REMOTE_USER $remote_user;#默認(rèn)沒有紅色這一句，如果沒有，后面nagios頁(yè)面會(huì)報(bào)錯(cuò)，具體錯(cuò)誤后面給出。#fastcgi_param SCRIPT_NAME $fastcgi_script_name;fastcgi_param SERVER_ADDR $server_addr;fastcgi_param SERVE

16、R_NAME $server_name;fastcgi_param SERVER_PORT $server_port;fastcgi_param SERVER_PROTOCOL $server_protocol;fastcgi_param SERVER_SOFTWARE nginx;fastcgi_param CONTENT_LENGTH $content_length;fastcgi_param CONTENT_TYPE $content_type;fastcgi_param GATEWAY_INTERFACE CGI/1.1;fastcgi_param HTTP_ACCEPT_ENCODI

17、NG gzip,deflate;fastcgi_param HTTP_ACCEPT_LANGUAGE zh-cn;fcgi.conf文件內(nèi)容如下：fastcgi_paramGATEWAY_INTERFACECGI/1.1;fastcgi_paramSERVER_SOFTWARE nginx;fastcgi_paramQUERY_STRING $query_string;fastcgi_paramREQUEST_METHOD $request_method;fastcgi_paramCONTENT_TYPE $content_type;fastcgi_paramCONTENT_LENGTH $c

18、ontent_length;fastcgi_paramSCRIPT_FILENAME $document_root$fastcgi_script_name;fastcgi_paramSCRIPT_NAME $fastcgi_script_name;fastcgi_paramREQUEST_URI $request_uri;fastcgi_paramDOCUMENT_URI $document_uri;fastcgi_paramDOCUMENT_ROOT $document_root;fastcgi_paramSERVER_PROTOCOL $server_protocol;fastcgi_pa

19、ramREMOTE_ADDR $remote_addr;fastcgi_paramREMOTE_PORT $remote_port;fastcgi_paramSERVER_ADDR $server_addr;fastcgi_paramSERVER_PORT $server_port;fastcgi_paramSERVER_NAME $server_name;# PHP only, required if PHP was built with enable-force-cgi-redirectfastcgi_paramREDIRECT_STATUS 200;以上可以把nginx中fastcGI部

20、分整合到fcgi.conf中。啟動(dòng)nginx，確定有fastcGI 9000端口。 后臺(tái)啟動(dòng)screen ./perl-cgi.pl /dev/null；ctrl +a +d 退出screen。然后chmod777 /var/run/nagios.sock；并且重啟service nagios restart六。安裝完畢，然后訪問(wèn)：直接訪問(wèn) 9 會(huì)彈出登錄框 ，輸入用戶名nagiosadmin 和密碼，會(huì)看到nagios默認(rèn)監(jiān)控localhost！頁(yè)面如下：而且點(diǎn)擊詳細(xì)服務(wù)關(guān)閉報(bào)警，也不報(bào)錯(cuò): 這樣的話，nginx+nagios 環(huán)境搭建完畢！剩下的就是具體監(jiān)控客戶端的配置啦！文章后續(xù)給出！本文環(huán)境已經(jīng)測(cè)試通過(guò)，搭建的時(shí)候，也遇到了好多例如403、502、504等等系列問(wèn)題，一點(diǎn)一滴的解決。一件事只有你真正做過(guò)，你才會(huì)感覺到學(xué)到很多東西。如下的報(bào)錯(cuò)：（1）、It seems that you ha