CentOS 6.2+Nginx+Nagios,手机短信和qq邮箱提醒

http://chenhao6.blog.51cto.com/6228054/1323192

标签：软件包 配置文件 nagios 服务端 监控

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CentOS 6.2+Nginx+Nagios,手机短信和qq邮箱提醒

注：192.168.0.21 服务端

192.168.0.22 客户端

环境：两台centos6.0 64位系统，都已经搭建好了源码的lnmp平台

结尾附上所需的软件包

1.nagios安装（中文版）

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tar xvf nagios-cn-3.2.3.tar.bz2 cd nagios-cn-3.2.3 useradd -m -s /bin/bash nagios usermod -a -G nagcmd nagios ./configure --prefix=/usr/local/nagios --with-command-group=nagcmd make make all make install make install-init     # 生成init启动脚本 make install-config     # 安装示例配置文件 make install-commandmode     # 设置相应的目录权限 chmod o+rwx /usr/local/nagios/var/rw

2.nagios-plugins安装

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wget http://prdownloads.sourceforge.net/sourceforge/nagiosplug/nagios-plugins tar zxvf nagios-plugins-1.4.16.tar.gz cd nagios-plugins-1.4.16 yum install make apr* autoconf automake curl curl-devel gcc gcc-c++ zlib-devel \ openssl openssl-devel pcre-devel gd gd-devel kernel keyutils patch perl perl-devel \ kernel keyutils kernel-headers compat* mpfr cpp glibc libgomp libstdc++-devel ppl \ cloog-ppl keyutils-libs-devel libcom_err-devel libsepol-devel libselinux-devel \ krb5-devel zlib-devel libXpm* freetype libjpeg* libpng* php-common php-gd ncurses* libtool* libxml2 libxml2-devel patch -y

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./configure --prefix=/usr/local/nagios --with-mysql=/home/mysql/ make make install

3.nrpe安装

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tar xzvf nrpe-2.12.tar.gz cd nrpe-2.12 ./configure make ./configure make all make install-plugin make install-daemon make install-daemon-config \cp src/check_nrpe /usr/local/nagios/libexec/ /usr/local/nagios/bin/nrpe -c /usr/local/nagios/etc/nrpe.cfg -d echo '/usr/local/nagios/bin/nrpe -c /usr/local/nagios/etc/nrpe.cfg -d' >> /etc/rc.local

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要重启nrpe进行就先杀掉进行，然后重启 kill `ps aux |grep nrpe |grep -v grep |awk '{print $2}'` /usr/local/nagios/bin/nrpe -c /usr/local/nagios/etc/nrpe.cfg -d 本机测试下： /usr/local/nagios/libexec/check_nrpe -H localhost -c check_users

加入系统服务

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加入系统服务并设为开机自动 chkconfig --add nagios chkconfig nagios on chown nagios.nagios /usr/local/nagios/var/rw # 测试配置文件是否正确 /usr/local/nagios/bin/nagios -v /usr/local/nagios/etc/nagios.cfg

添加别名命令，方便测试配置文件

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vi ~/.bashrc 在里面用alias 来自定义一个命令来代替，这里我用check alias check='/usr/local/nagios/bin/nagios -v /usr/local/nagios/etc/nagios.cfg' source ~/.bashrc 此时可以用check命令来检测配置文件了

修改联系人邮箱，修改为用于报警接收的邮件地址

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vi /usr/local/nagios/etc/objects/contacts.cfg ############################################################################### # CONTACTS.CFG - SAMPLE CONTACT/CONTACTGROUP DEFINITIONS # # Last Modified: 05-31-2007 # # NOTES: This config file provides you with some example contact and contact #        group definitions that you can reference in host and service #        definitions. # #        You don't need to keep these definitions in a separate file from your #        other object definitions.  This has been done just to make things #        easier to understand. # ############################################################################### ############################################################################### ############################################################################### # # CONTACTS # ############################################################################### ############################################################################### # Just one contact defined by default - the Nagios admin (that's you) # This contact definition inherits a lot of default values from the 'generic-contact' # template which is defined elsewhere. define contact{         contact_name                    nagiosadmin             ; Short name of user         use                             generic-contact         ; Inherit default values from generic-contact template (defined above)         alias                           Nagios Admin            ; Full name of user         email                           nagios@localhost        ; <<***** CHANGE THIS TO YOUR EMAIL ADDRESS ******         } ############################################################################### ############################################################################### # # CONTACT GROUPS # ############################################################################### ############################################################################### # We only have one contact in this simple configuration file, so there is # no need to create more than one contact group. define contactgroup{         contactgroup_name       admins         alias                   Nagios Administrators         members                 nagiosadmin         } 定义check_nrpe命令 vi /usr/local/nagios/etc/objects/commands.cfg define command{ command_name check_nrpe command_line /usr/local/nagios/libexec/check_nrpe -H $HOSTADDRESS$ -c $ARG1$ }

检测配置文件是否有误

check

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nginx 配置，Nginx fastcgi perl (pl、cgi)支持 安装FCGI模块 cd tar zxvf FCGI-0.70.tar.gz cd FCGI-0.70 perl Makefile.PL make make install cd 安装 IO 和 IO::ALL模块 tar zxvf IO-1.25.tar.gz cd IO-1.25 perl Makefile.PL make make install cd tar zxvf IO-All-0.41.tar.gz cd IO-All-0.41 perl Makefile.PL make make install cd unzip perl-fcgi.zip cp perl-fcgi.pl /usr/local/nginx/ chmod 755 /usr/local/nginx/perl-fcgi.pl

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vi /usr/local/nginx/start_perl_cgi.sh #!/bin/bash #set -x dir=/usr/local/nginx/ stop () { #pkill  -f  $dir/perl-fcgi.pl kill $(cat $dir/logs/perl-fcgi.pid) rm $dir/logs/perl-fcgi.pid 2>/dev/null rm $dir/logs/perl-fcgi.sock 2>/dev/null echo "stop perl-fcgi done" } start () { rm $dir/now_start_perl_fcgi.sh 2>/dev/null chown nobody.root $dir/logs echo "$dir/perl-fcgi.pl -l $dir/logs/perl-fcgi.log -pid $dir/logs/perl-fcgi.pid -S $dir/logs/perl-fcgi.sock" >>$dir/now_start_perl_fcgi.sh chown nobody.nobody $dir/now_start_perl_fcgi.sh chmod u+x $dir/now_start_perl_fcgi.sh sudo -u nobody $dir/now_start_perl_fcgi.sh echo "start perl-fcgi done" } case $1 in stop) stop ;; start) start ;; restart) stop start ;; esac

把start_perl_cgi.sh文件中的nobody全部用nagios替换，nginx
目录上的用户

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sed -i 's@nobody@nagios@g' /usr/local/nginx/start_perl_cgi.sh chmod 755 /usr/local/nginx/start_perl_cgi.sh /usr/local/nginx/start_perl_cgi.sh start

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# 取消用户认证(方便调试) vi /usr/local/nagios/etc/cgi.cfg 找到use_authentication=1并把值改为0 修改联系人邮箱，修改为用于报警接收的邮件地址 vi /usr/local/nagios/etc/objects/contacts.cfg

到这一步就是正常的

下面nginx 配置

我把监听改成80的了

然后开启服务

就可以访问了，然后继续安装客户端，最后给大家截图看效果

service nagios start

nagios被控端安装

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yum install openssl-devel -y 1. nagios-plugins安装 groupadd nagios useradd nagios -M -s /sbin/nologin -g nagios tar xvf nagios-plugins-1.4.16.tar.gz cd nagios-plugins-1.4.16 ./configure --prefix=/usr/local/nagios --with-nagios-user=nagios --with-nagios-gourp=nagios --with-mysql=/usr/local/mysql && make && make install cd 2. nrpe安装 tar zxvf nrpe-2.13.tar.gz cd nrpe-2.13 ./configure make all make install-plugin make install-daemon make install-daemon-config

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启动nrpe /usr/local/nagios/bin/nrpe -c /usr/local/nagios/etc/nrpe.cfg -d echo '/usr/local/nagios/bin/nrpe -c /usr/local/nagios/etc/nrpe.cfg -d' >> /etc/rc.local

监控服务端本机：自己监控自己不需要配置nrpe，服务端的nrpe只用于获取客户端的nrpe传送过来的数据，在这里因为中文版的nagios已经默认有些配置，等会儿修改下直接用了

监控客户端：监控的服务有：mysql、nginx、memory、ip连接数、僵死的进程、磁盘空间、磁盘IO、登录用户数、进程总数、cpu负载、PING、SSH

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unzip libexec.zip \cp libexec/* /usr/local/nagios/libexec chmod -R +x /usr/local/nagios/libexec

装插件

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创建一个空的数据库nagios，授权nagios这个用户从任何地方访问nagios这个数据库，刷新授权设置，查询下nagios这个用户是否创建成功 create database nagios; grant select on nagios.* to nagios @'%' identified by '123456'; flush privileges; select User,Password,Host from mysql.user;

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添加mysql库到系统搜索库 vim /etc/ld.so.conf /usr/local/mysql/lib ldconfig 要监控磁盘io，还得安装sysstat这个工具包 yum install sysstat -y 配置客户端上面的nrpe vim /usr/local/nagios/etc/nrpe.cfg

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配置客户端上面的nrpe vim /usr/local/nagios/etc/nrpe.cfg command[check_users]=/usr/local/nagios/libexec/check_users -w 5 -c 10 command[check_load]=/usr/local/nagios/libexec/check_cpu.sh -w 80% -c 90% command[check_sda1]=/usr/local/nagios/libexec/check_disk -w 20% -c 10% -p /dev/sda1 command[check_sda2]=/usr/local/nagios/libexec/check_disk -w 20% -c 10% -p /dev/sda2 command[check_zombie_procs]=/usr/local/nagios/libexec/check_procs -w 5 -c 10 -s Z command[check_total_procs]=/usr/local/nagios/libexec/check_procs -w 150 -c 200 command[check_swap]=/usr/local/nagios/libexec/check_swap -w 20% -c 10% command[check_iostat]=/usr/local/nagios/libexec/check_iostat.sh -d sda -w 6 -c 10 command[check_mysql]=/usr/local/nagios/libexec/check_mysql -H 192.168.0.22 -u nagios -p 123456 -d nagios command[check_nginx]=/usr/local/nagios/libexec/check_nginx.sh -u 192.168.0.22 -p /status -w 4000 -c 5000 command[check_mem]=/usr/local/nagios/libexec/check_memory.pl -f -w 20 -c 10 command[check_ip_conn]=/usr/local/nagios/libexec/ip_conn.sh 200 250 command[check_ssh]=/usr/local/nagios/libexec/check_tcp -p 22 -w 1.0 -c 10.0 配置完成后，重启nrpe kill `ps aux |grep nrpe |grep -v grep |awk '{print $2}'` /usr/local/nagios/bin/nrpe -c /usr/local/nagios/etc/nrpe.cfg -d 服务端配置： 监控服务端本机的配置： vim /usr/local/nagios/etc/objects/localhost.cfg 修改里面的配置，最后修改完成的配置如下 define host{         use                     linux-server         host_name               localhost         alias                   localhost         address                 127.0.0.1         icon_image              server.gif         statusmap_image         server.gd2     2d_coords       500,200     3d_coords       500,200,100         } define hostgroup{         hostgroup_name  linux-servers ; The name of the hostgroup         alias           Linux Servers ; Long name of the group         members         *     ; Comma separated list of hosts that belong to this group         } define servicegroup{ servicegroup_name 全部联通性检查 alias 联通性检查           members localhost,PING,nagios-client,PING           } define service{         use                             local-service         ; Name of service template to use         host_name                       *         service_description             PING            check_command            check_ping!100.0,20%!500.0,60%         } define service{         use                             local-service         ; Name of service template to use         host_name                       localhost         service_description             根分区            check_command            check_local_disk!20%!10%!/         } define service{         use                             local-service         ; Name of service template to use         host_name                       localhost         service_description             登录用户数            check_command            check_local_users!20!50         } define service{         use                             local-service         ; Name of service template to use         host_name                       localhost         service_description             进程总数            check_command            check_local_procs!250!400!RSZDT         } define service{         use                             local-service         ; Name of service template to use         host_name                       localhost         service_description             系统负荷            check_command            check_local_load!5.0,4.0,3.0!10.0,6.0,4.0         } define service{         use                             local-service         ; Name of service template to use         host_name                       localhost         service_description             交换空间利用率            check_command            check_local_swap!20!10         } define service{         use                             local-service         ; Name of service template to use         host_name                       localhost         service_description             SSH            check_command            check_tcp!22!1.0!10.0            notifications_enabled        0         } 服务器监控客户端的配置： 保存退出后复制这个文件一份，作为nagios-client的监控模版文件 cp /usr/local/nagios/etc/objects/localhost.cfg /usr/local/nagios/etc/objects/nagios-client.cfg vim /usr/local/nagios/etc/objects/nagios-client.cfg   修改完成后的配置如下 define host{         use                     linux-server         host_name               nagios-client         alias                   nagios-client         address                 192.168.0.22         icon_image              server.gif         statusmap_image         server.gd2         2d_coords       500,200         3d_coords       500,200,100         } define service{         use                             local-service         ; Name of service template to use         host_name                       *         service_description             PING         check_command           check_ping!100.0,20%!500.0,60%         } define service{         use                             local-service         ; Name of service template to use         host_name                       nagios-client         service_description             boot分区         check_command           check_nrpe!check_sda1         } define service{         use                             local-service         ; Name of service template to use         host_name                       nagios-client         service_description             根分区         check_command           check_nrpe!check_sda2         } define service{         use                             local-service         ; Name of service template to use         host_name                       nagios-client         service_description             登录用户数         check_command           check_nrpe!check_users         } define service{         use                             local-service         ; Name of service template to use         host_name                       nagios-client         service_description             进总程数         check_command           check_nrpe!check_total_procs         } define service{         use                             local-service         ; Name of service template to use         host_name                       nagios-client         service_description             CPU平均负载         check_command           check_nrpe!check_load         } define service{         use                             local-service         ; Name of service template to use         host_name                       nagios-client         service_description             虚拟内存         check_command           check_nrpe!check_swap         } define service{         use                             local-service         ; Name of service template to use         host_name                       nagios-client         service_description             SSH         check_command           check_nrpe!check_ssh         notifications_enabled       0         } define service{         use                             local-service         ; Name of service template to use         host_name                       nagios-client         service_description             僵死进程数         check_command           check_nrpe!check_zombie_procs         } define service{         use                             local-service         ; Name of service template to use         host_name                       nagios-client         service_description             iostat         check_command           check_nrpe!check_iostat         } define service{         use                             local-service         ; Name of service template to use         host_name                       nagios-client         service_description             mysql         check_command           check_nrpe!check_mysql         } define service{         use                             local-service         ; Name of service template to use         host_name                       nagios-client         service_description             nginx         check_command           check_nrpe!check_nginx         } define service{         use                             local-service         ; Name of service template to use         host_name                       nagios-client         service_description             memory         check_command           check_nrpe!check_mem         } define service{         use                             local-service         ; Name of service template to use         host_name                       nagios-client         service_description             IP连接数         check_command           check_nrpe!check_ip_conn         }

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直接把原来的邮件报警的两条命令中的/bin/mail修改为/usr/bin/mutt即可，如下图                                                                              加快nagios的报警时间设置: 1.修改模版文件： vim /usr/local/nagios/etc/objects/templates.cfg 修改所有normal_check_interval项的值为1，既发现故障后1分钟就报警 修改所有check_interval项的值为1，即正常情况下每分钟检查一次 修改所有notification_interval  的值为20分钟         #在主机出现异常后，故障一直没有解决，nagios再次对使用者发出通知的时间 service nagios restart    重启nagios

测试告警：

试验完成！

附上软件包所需软件地址

缺的软件可以直接找我要！

http://down.51cto.com/data/1007210

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