nagios部署+短信和邮件报警

操作系统 CentOS6.6 

服务端：10.0.0.20

客户端：10.0.0.50

一.nagios的服务端安装部署

1.nagios安装

[root@manager src]# rz
rz waiting to receive.
Starting zmodem transfer. Press Ctrl+C to cancel.
Transferring nagios-cn-3.2.3.tar.bz2...
100% 9412 KB 9412 KB/sec 00:00:01 0 Errors

tar xf nagios-cn-3.2.3.tar.bz2 
cd nagios-cn-3.2.3
useradd -m -s /bin/bash nagios
groupadd nagcmd

  make install; make install-init;make install-commandmode;make install-config;make install-webconf
  ll /usr/local/nagios/  #出现以下文件代表成功

drwxrwxr-x 2 nagios nagios 4096 Mar 12 08:08 bin
drwxrwxr-x 3 nagios nagios 4096 Mar 12 08:08 etc
drwxrwxr-x 2 nagios nagios 4096 Mar 12 08:08 libexec
drwxrwxr-x 2 nagios nagios 4096 Mar 12 08:08 sbin
drwxrwxr-x 9 nagios nagios 4096 Mar 12 08:08 share
drwxrwxr-x 6 nagios nagios 4096 Mar 12 08:08 var

  chmod o+rwx /usr/local/nagios/var/rw

 2.nagios plugin 插件安装

[root@manager src]# rz
rz waiting to receive.
Starting zmodem transfer.  Press Ctrl+C to cancel.
Transferring nagios-plugins-1.4.13.tar.gz...
  100%    2226 KB    2226 KB/sec    00:00:01       0 Errors 

[root@manager src]# tar xf nagios-plugins-1.4.13.tar.gz  
[root@manager src]# cd nagios-plugins-1.4.13

#安装依赖

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=/usr/local/mysql/
make
make install

  file /usr/lib64/libxcb-reply.so.1.0.0 from install of compat-xcb-util-0.4.0-2.2.el6.x86_64 conflicts with file from package xcb-util-0.3.6-5.el6.x86_64

有冲突卸载掉这个有冲突的

yum remove -y xcb-util-0.3.6-5.el6.x86_64

3.nrpe安装

[root@manager src]# rz
rz waiting to receive.
Starting zmodem transfer.  Press Ctrl+C to cancel.
Transferring nrpe-2.12.tar.gz...
  100%     396 KB     396 KB/sec    00:00:01       0 Errors 

tar xf 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

安装 nginx  的FCGI模块

  cd /usr/local/src/
  rz
  tar xf FCGI-0.74.tar.gz 
  cd FCGI-0.74
  perl Makefile.PL 
  make && make install

安装IO  和IO-ALL模块

[root@manager src]# tar xf IO-1.25.tar.gz 
[root@manager src]# cd IO-1.25
[root@manager IO-1.25]# perl Makefile.PL
[root@manager IO-1.25]# make && make install

[root@manager src]# tar xf IO-All-0.81.tar.gz
[root@manager src]# cd IO-All-0.81
[root@manager IO-All-0.81]# perl Makefile.PL

[root@manager IO-All-0.81]# make && make install

上传fastcgi 的启动脚本。

[root@manager src]# rz
rz waiting to receive.
Starting zmodem transfer. Press Ctrl+C to cancel.
Transferring perl-fcgi.zip...
100% 2 KB 2 KB/sec 00:00:01 0 Errors

[root@manager src]# unzip perl-fcgi.zip
Archive: perl-fcgi.zip
inflating: perl-fcgi.pl
[root@manager src]# cp perl-fcgi.pl /usr/local/nginx/

[root@manager IO-All-0.81]# chmod 755 /usr/local/nginx/perl-fcgi.pl

[root@manager nginx]# ./start_perl_cgi.sh start
start perl-fcgi done

[root@manager ~]# cat /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

启动fastcgi

[root@manager nginx]# ./start_perl_cgi.sh start
start perl-fcgi done

# 重复启动会报这样的错 使用行参restart 或者stop 以后再start 就不会报这样的错。

[root@manager nginx]# ./start_perl_cgi.sh start

ERROR PID file /usr/local/nginx/logs/perl-fcgi.pid already exists

start perl-fcgi done

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

[root@manager ~]# sed -i 's#nobody#nagios#g' /usr/local/nginx/start_perl_cgi.sh 

[root@manager ~]# ps -ef |grep nagios
nagios     1695      1  0 05:52 ?        00:00:00 /usr/local/nagios/bin/nrpe -c /usr/local/nagios/etc/nrpe.cfg -d
nagios     1707      1  0 05:52 ?        00:00:00 /usr/local/nagios/bin/nagios -d /usr/local/nagios/etc/nagios.cfg

# 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

email   13311802282@163.com (默认是nagios@localhost换成自己的邮箱)

产生这样一个socket文件表示启动成功了

[root@manager nginx]#  /etc/init.d/nagios start              
Starting nagios: done.

二，nagios的被监控端安装部署

1.安装nagios插件

[root@master ~]# groupadd nagios
[root@master ~]# useradd nagios -M -s /sbin/nologin -g nagios
[root@master ~]# rz
rz waiting to receive.
Starting zmodem transfer.  Press Ctrl+C to cancel.
Transferring nagios-plugins-1.4.13.tar.gz...
  100%    2226 KB    2226 KB/sec    00:00:01       0 Errors  
[root@master nagios-plugins-1.4.13]# ./configure --prefix=/usr/local/nagios --with-nagios-user=nagios --with-nagios-group=nagios --with-mysql=/usr/local/mysql && make && make install

2.安装nrpe

[root@master nagios-plugins-1.4.13]# cd
[root@master ~]# rz
rz waiting to receive.
Starting zmodem transfer.  Press Ctrl+C to cancel.
Transferring nrpe-2.12.tar.gz...
  100%     396 KB     396 KB/sec    00:00:01       0 Errors  
[root@master nrpe-2.12]# ./configure && make all && make install-plugin && make install-daemon && make install-daemon-config

[root@master nrpe-2.12]# echo $? （0未报错）
0

# 启动nrpe 

[root@master nrpe-2.12]# /usr/local/nagios/bin/nrpe -c /usr/local/nagios/etc/nrpe.cfg -d
[root@master nrpe-2.12]# ps -ef |grep nrp
nagios    23592      1  0 09:28 ?        00:00:00 /usr/local/nagios/bin/nrpe -c /usr/local/nagios/etc/nrpe.cfg -d
# 设置开机启动进程

[root@master nrpe-2.12]# 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

有两个红色的不知道啥吊情况。

 3.操作数据库mysql

mysql> create database nagios;
Query OK, 1 row affected (0.07 sec)

mysql> grant select on nagios.* to nagios@'%' identified by '123';
Query OK, 0 rows affected (0.05 sec)

mysql> flush privileges;
Query OK, 0 rows affected (0.00 sec)

mysql> select user,password,host from mysql.user;
+--------+-------------------------------------------+-----------+
| user   | password                                  | host      |
+--------+-------------------------------------------+-----------+
| root   | *23AE809DDACAF96AF0FD78ED04B6A265E05AA257 | localhost |
| root   | *23AE809DDACAF96AF0FD78ED04B6A265E05AA257 | master    |
| root   | *23AE809DDACAF96AF0FD78ED04B6A265E05AA257 | 127.0.0.1 |
| root   | *23AE809DDACAF96AF0FD78ED04B6A265E05AA257 | ::1       |
|        |                                           | localhost |
|        |                                           | master    |
| repl   | *23AE809DDACAF96AF0FD78ED04B6A265E05AA257 | 10.0.0.%  |
| root   | *23AE809DDACAF96AF0FD78ED04B6A265E05AA257 | 10.0.0.%  |
| nagios | *23AE809DDACAF96AF0FD78ED04B6A265E05AA257 | %         |
+--------+-------------------------------------------+-----------+
9 rows in set (0.03 sec)

# 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

allowed_hosts=127.0.0.1,10.0.0.20;  #允许server主机获取信息

command[check_users]=/usr/local/nagios/libexec/check_users -w 5 -c 10
command[check_load]=/usr/local/nagios/libexec/check_load -w 15,10,5 -c 30,25,20
#command[check_hda1]=/usr/local/nagios/libexec/check_disk -w 20% -c 10% -p /dev/hda1 （由于我的磁盘时scsii的硬盘所以不是hd是sd）
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 

#----------------------------------下面是后加的----------------------------------------------------
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_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

配置完重新启动进程

[root@master ~]# kill `ps aux |grep nrpe |grep -v grep |awk '{print $2}'`
[root@master ~]# /usr/local/nagios/bin/nrpe -c /usr/local/nagios/etc/nrpe.cfg -d
[root@master ~]# ps -ef |grep nrpe
nagios     1598      1  0 10:04 ?        00:00:00 /usr/local/nagios/bin/nrpe -c /usr/local/nagios/etc/nrpe.cfg -d
root       1600   1491  0 10:04 pts/0    00:00:00 grep nrpe

服务端配置：

[root@manager ~]# cp /usr/local/nagios/etc/objects/localhost.cfg /usr/local/nagios/etc/objects/localhost.cfg.bak
[root@manager ~]# > /usr/local/nagios/etc/objects/localhost.cfg
[root@manager ~]# vim /usr/local/nagios/etc/objects/localhost.cfg

#这是自己监控自己的配置文件
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
        }

服务器端监控被监控主机的配置文件：

 

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                 10.0.0.50
        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
        }

出现问题会自动发送邮件到你设置的邮箱

这个部署的不太成功！网页没有显示。。。。明天重新再来一遍，再好好理解理解，这些安装包都特么好难找，这下我应该算是收集全了，在部署应该很快。