Linux下nginxnagios 监控平台搭建

1、Linux下nginx+nagios 监控平台搭建】随着linux服务器可用性、稳定性逐步增强，企业对线上服务也要求越来越严格，需要有专门的监控系统监控服务的正常运转，并有问题及时发邮件、报警给linux SA。我们大多数nagios、cacti监控都基于apache搭建，今天我们讲一种新平台搭建nginx平台的nagios监控！一、系统运行环境：服务器系统版本：Centos 5.3x64nginx版本：nginx-二、下载所需包:所有安装所需的源码包：本站点集成下载：Nginx 安装请参考： 【nginx安装】nginx安装完毕后。三、正式安装nagios：创建nagios用户和组，并把ww

2、w加入nagios管理组：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 install-config & make insta

3、ll-commandmodenagios安装完毕：验证程序是否被正确安装。切换目录到安装路径（这里是/usr/local/nagios）,看是否存在 etc、bin、 sbin、 share、 var这五个目录，如果存在则可以表明程序被正确的安装到系统了。接下来编译并安装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/nagios -with-nagios-user=nagios

4、-with-nagios-group=nagios& make & make install插件安装完毕！ls /usr/local/nagios/libexec会显示安装的插件文件,即所有的插件都安装在libexec这个目录下。四、创建一个nagiosadmin用户：用于Nagios的WEB接口登录。记下你所设置的登录口令，一会儿你会用到它这里要借助于apche的htpasswd，在有apache机器上执行下列命令/usr/local/apache2/bin/htpasswd -c /usr/local/nagios/etc/htpasswd nagiosadmin输入两次一样的密码即可。启

5、动nagios ；chkconfig add nagios 添加到service 中，chkconfig nagios level 35 on 设置成开机启动。【把selinux、iptables关闭，或者更改iptables策略需要访问nagios】五、安装perl fcgi模块：【首先得安装php并编译fastcGI模块】安装php可参考 （1）、安装FCGIcd /usr/src & tar -zxvf FCGI-0.67.tar.gz &cd FCGI-0.67 & perl Makefile.PL & make & make install(2)、安装FCGI-ProcManager

6、:cd ./ & tar -xzxf FCGI-ProcManager-0.18.tar.gz &cd FCGI-ProcManager-0.18 & perl Makefile.PL &make & make install安装完毕即可。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/stylesheets /usr/local/nagios/sha

7、re/nagios/stylesheets 避免无法显示图片。接下来配置cgi脚本、nginx配置文件：cd/usr/local/nagios/bin/ 下新建文件，并写入以下内容 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“fakeexitnrc=”.shift().”n”;

8、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!$request= FCGI:Request(*STDIN,*STDOUT,*STDERR,%ENV,$sock

9、et);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($ENVREQUEST_METHODeqGET)$stdin_passthrough.=$ENVQUE

10、RY_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_passthroughorprint(“Content-type: tex

11、t/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 exist or is not executable

12、by this process.n”; 设置权限chmod +x perl-cgi.pl 即可！以下是我的nginx.conf文件server内容：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_user $time_local “$request”

13、 $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$ root /usr/local/nagios/sb

14、in;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_param REMOTE_PORT $remote_

15、port;fastcgi_param REQUEST_METHOD $request_method;fastcgi_param REQUEST_URI $request_uri;fastcgi_param REMOTE_USER $remote_user;#默认没有红色这一句，如果没有，后面nagios页面会报错，具体错误后面给出。#fastcgi_param SCRIPT_NAME $fastcgi_script_name;fastcgi_param SERVER_ADDR $server_addr;fastcgi_param SERVER_NAME $server_name;fastcgi

16、_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_ENCODING gzip,deflate;fastcgi_par

17、am HTTP_ACCEPT_LANGUAGE zh-cn;fcgi.conf文件内容如下：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 $content_length;fastcgi_param

18、SCRIPT_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_paramREMOTE_ADDR $remote_addr

19、;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部分整合到fcgi.conf中。启动nginx，确定有f

20、astcGI 9000端口。 后台启动screen ./perl-cgi.pl /dev/null；ctrl +a +d 退出screen。然后chmod777 /var/run/nagios.sock；并且重启service nagios restart六。安装完毕，然后访问：直接访问 会弹出登录框 ，输入用户名nagiosadmin 和密码，会看到nagios默认监控localhost！页面如下：而且点击详细服务关闭报警，也不报错: 这样的话，nginx+nagios 环境搭建完毕！剩下的就是具体监控客户端的配置啦！文章后续给出！本文环境已经测试通过，搭建的时候，也遇到了好多例如403、50