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CentOS 6.2+Nginx+Nagios,手机短信和qq邮箱提醒

时间:2014-03-04 00:37来源:51cto.com 作者:51cto

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

2.nagios-plugins安装

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wget http://prdownloads.sourceforge.net/sourceforge/nagiosplug/nagios-plugins
tarzxvf nagios-plugins-1.4.16.tar.gz
cdnagios-plugins-1.4.16
yum installmakeapr* 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
makeinstall

 

3.nrpe安装

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tarxzvf nrpe-2.12.tar.gz
cdnrpe-2.12
./configure
make
./configure
makeall
makeinstall-plugin
makeinstall-daemon
makeinstall-daemon-config
\cpsrc/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`psaux |grepnrpe |grep-vgrep|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
chownnagios.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
aliascheck='/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)
aliasNagios 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
aliasNagios 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

134820361.jpg

134910903.jpg

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nginx 配置,Nginx fastcgi perl (pl、cgi)支持
安装FCGI模块
cd
tarzxvf FCGI-0.70.tar.gz
cdFCGI-0.70
perl Makefile.PL
make
makeinstall
cd
安装 IO 和 IO::ALL模块
tarzxvf IO-1.25.tar.gz
cdIO-1.25
perl Makefile.PL
make
makeinstall
cd
tarzxvf IO-All-0.41.tar.gz
cdIO-All-0.41
perl Makefile.PL
make
makeinstall
cd
unzip perl-fcgi.zip
cpperl-fcgi.pl /usr/local/nginx/
chmod755 /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
chownnobody.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
chownnobody.nobody $dir/now_start_perl_fcgi.sh
chmodu+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

 

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
chmod755 /usr/local/nginx/start_perl_cgi.sh
/usr/local/nginx/start_perl_cgi.sh start

135456830.jpg

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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

135458347.jpg

 

135505944.jpg

到这一步就是正常的

下面nginx 配置

我把监听改成80的了

135508550.jpg

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 installopenssl-devel -y
1. nagios-plugins安装
groupadd nagios
useraddnagios -M -s /sbin/nologin-g nagios
tarxvf nagios-plugins-1.4.16.tar.gz
cdnagios-plugins-1.4.16
./configure--prefix=/usr/local/nagios--with-nagios-user=nagios --with-nagios-gourp=nagios --with-mysql=/usr/local/mysql&& make&& makeinstall
cd
2. nrpe安装
tarzxvf nrpe-2.13.tar.gz
cdnrpe-2.13
./configure
makeall
makeinstall-plugin
makeinstall-daemon
makeinstall-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:mysqlnginxmemoryip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、PINGSSH

 

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unzip libexec.zip
\cplibexec/* /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 selecton nagios.* to nagios @'%'identified by '123456';
flush privileges;
selectUser,Password,Host from mysql.user;

 

135951346.jpg

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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 installsysstat -y
配置客户端上面的nrpe
vim /usr/local/nagios/etc/nrpe.cfg

135954212.jpg

 

135958970.jpg

140000200.jpg

140003554.jpg

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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`psaux |grepnrpe |grep-vgrep|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
aliaslocalhost
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
aliasLinux 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
aliasnagios-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
}

142017582.jpg

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

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测试告警:

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试验完成!

附上软件包所需软件地址

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

本文出自 “▁▁技术控ヽ” 博客,请务必保留此出处http://chenhao6.blog.51cto.com/6228054/1323192

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