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）
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
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./configure --prefix=/usr/local/nagios --with-mysql=/home/mysql/
make
make install
3.nrpe安装
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
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
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
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 ; /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
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
# 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
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
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
unzip libexec.zip
\cp libexec/* /usr/local/nagios/libexec
chmod -R +x /usr/local/nagios/libexec 装插件
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;
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
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
}
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.运维网.com/data/1007210
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