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分类: LINUX

2011-09-12 18:44:31

1、  解决nagios的依赖关系,和所需组件:

# yum -y install httpd gcc glibc glibc-common *gd* php php-mysql mysql mysql-server

2、  nagios所需组件:nagios nagios-plugins ndoutils(非必须)

linux客户端:nrpe   windows客户端NSClient++

创建nagiso用户和组:      

# groupadd nagcmd

# useradd -m nagios

# usermod -a -G nagcmd nagios

# usermod -a -G nagcmd apache

编译安装nagios:    

# tar zxf nagios-3.1.2.tar.gz

# cd nagios-3.1.2

# ./configure --with-command-group=nagcmd --enable-event-broker --prefix=/var/www/nagios

 

# make all

# make install

# make install-init

# make install-config

# make install-commandmode

email指定您想用来接收nagios警告信息的邮件地址,默认是本机的nagios用户:

# vi /var/www/nagios/etc/objects/contacts.cfg

email        nagios@localhost       #这个是默认设置

httpd的配置文件目录(conf.d)中创建NagiosWeb程序配置文件:

# make install-webconf

创建一个登录nagios web程序的用户,这个用户帐号在以后通过web登录nagios认证时所用:

# htpasswd -c /var/www/nagios/htpasswd.users nagiosadmin

   启动服务:       #service httpd restart

编译安装nagios-plusgins:

           # tar zxf nagios-plugins-1.4.13.tar.gz

# cd nagios-plugins-1.4.13

# ./configure --with-nagios-user=nagios --with-nagios-group=nagios --prefix=/var/www/nagios --with-mysql=/usr/lib/mysql

           #make && make install

启动服务:  

检测配置文件:# /var/www/nagios/bin/nagios -v /var/www/nagios/etc/nagios.cfg

              #service nagios restart

              #chkconfig nagios add

              #chkconfig nagios on

              #setenforce 0  这个只是临时关闭selinux

当然,也可以通过以下方式将nagiosCGI程序运行于SELinux/targeted模式而不用关闭selinux

# chcon -R -t httpd_sys_content_t /usr/local/nagios/sbin

# chcon -R -t httpd_sys_content_t /usr/local/nagios/share

web中输入 并输入密码和账户

+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

windows客户端安装:NSClient++-0.3.8-Win32.msi安装完后打开nagios.cfg文件将

注释去掉cfg_file=/usr/local/nagios/etc/objects/windows.cfg

定义windows.cfg

define host{

        use             windows-server  ; Inherit default values from a template

        host_name       winserver       ; The name we're giving to this host

        alias           My Windows Server       ; A longer name associated with the host

        address         192.168.0.191   ; 你主机的IP

        }

++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

linux客户端的安装:

先添加nagios用户

useradd nagios

为了安装nrpe,先安装nagios-plugins-1.4.15.tar.gz 插件

# tar zxf nagios-plugins-1.4.15.tar.gz

# cd nagios-plugins-1.4.15

# ./configure --with-nagios-user=nagios --with-nagios-group=nagios

# make

# make install

 

tar -zxvf nrpe-2.12.tar.gz

cd nrpe-2.12.tar.gz

./configure  (会自动加载SSL)

#如果后面make报错,加如下参数

./configure --enable-ssl --with-ssl-lib=/usr/lib/(当然前提要有openssl)

make all

make install-plugin

make install-daemon

make install-daemon-config

 

4.配置nrpe信息

vim /usr/local/nagios/etc/nrpe.cfg

allowed_hosts=127.0.0.1  //允许监控的IP

/usr/local/nagios/bin/nrpe -c /usr/local/nagios/etc/nrpe.cfg –d

服务端

3.安装NRPE

cd nagios-nrpe_2.8.1

./configure   #默认自动添加了openssl

#因为传送过程要加密,如果后面make报错,加如下参数

rpm -qa| grep ssl

openssl-devel-0.9.7a-43.17.el4_6.1

rpm -ql openssl-devel-0.9.7a-43.17.el4_6.1 | more

./configure --enable-ssl --with-ssl-lib=/lib/(当然前提要有openssl)

make all

make install-plugin

添加步骤:

vi /usr/local/nagios/etc/objects/commands.cfg

      nagios.cfg启用有以下行

         cfg_file=/usr/local/nagios/etc/objects/mylinux.cfg

4.commands.cfg定义外部构件nrpe

 

#添加

#check nrpe

define command{

        command_name check_nrpe

        command_line $USER1$/check_nrpe -H $HOSTADDRESS$ -c $ARG1$

        }

定义 mylinux.cfg

define host{

           use             linux-server

          host_name     mylinux

          alias            mylinux

          address        192.168.0.27(客户端IP既被监控的IP)

        }

define service{

        use                      generic-service

        host_name             mylinux

        service_description     check-swap

        check_command        check_nrpe!check_swap

               }

define service{

        use                      generic-service

        host_name             mylinux

        service_description     check-load

       check_command         check_nrpe!check_load

               }

define service{

        use                      generic-service

        host_name             mylinux

       service_description     check-disk

       check_command        check_nrpe!check_had1

define service{

        use                      generic-service

        host_name             mylinux

       service_description     check-users

       check_command        check_nrpe!check_users

               }

define service{

        use                    generic-service

        host_name           mylinux

        service_description  otal_procs

        check_command     check_nrpe!check_total_procs

}

 

+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

define service{

        use                    generic-service

        host_name           mylinux

        service_description  httpd

        check_command     check_http! -H 192.168.0.27

}

 

+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

nagios监控mysql服务器:

 

1、建立专用数据库:

[root@svr3 ~]# /usr/local/webserver/mysql/bin/mysql -u root -p

Enter password: 

Welcome to the MySQL monitor.  Commands end with ; or \g.

Your MySQL connection id is 51910

Server version: 5.5.3-m3-log Source distribution

 

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

 

mysql> create database nagios;

Query OK, 1 row affected (0.00 sec)

 

mysql> grant select on nagios.* to nagios@'%' identified by '123qweasd';

Query OK, 0 rows affected (0.00 sec)

 

mysql> flush privileges;

Query OK, 0 rows affected (0.00 sec)

 

mysql> select User,Password,Host from user;

+----------------+-------------------------------------------+------------------+

| User           | Password                                  | Host             |

+----------------+-------------------------------------------+------------------+

| root           | *84BB5DF4823DA319BBF86C99624479A198E6EEE9 | localhost        |

| nagios         | *A1F1CB851D62F002C09A0C9C4A76262473432F55 | %                |

+----------------+-------------------------------------------+------------------+

14 rows in set (0.00 sec)

12 rows in set (0.00 sec)

 

[root@svr3 ~]# /usr/local/nagios/libexec/check_mysql -H 192.168.0.3 -u nagios -d nagios -p 123qweasd

Uptime: 970046  Threads: 1  Questions: 684583  Slow queries: 3  Opens: 672  Flush tables: 1  Open tables: 

     注意:check_mysql必须如果没有则说明mysql-devel没有安装,需要安装后在重新编译安装nagios-plugins这个包

369  Queries per second avg: 0.705

 

[root@svr4 nrpe_install]# /usr/local/nagios/libexec/check_mysql -H 192.168.0.3 -u nagios -d nagios -p 123qweasd

Uptime: 970348  Threads: 1  Questions: 684584  Slow queries: 3  Opens: 672  Flush tables: 1  Open tables: 369  Queries per second avg: 0.705

 

果断开始设置:

#定义用户

#定义组,及隶属用户

#用户增加

 

command.cfg里增加插件命令:

#check mysql

define command{

command_name check_mysql

command_line $USER1$/check_mysql -H $HOSTADDRESS$ -u nagios -d nagios -p 123qweasd

}

 

#定义服务:

define service {

        host_name mysql

     

        check_period 24x7

        max_check_attempts 2

        normal_check_interval 1

        retry_check_interval 1

        contact_groups admins

        notification_interval 5

        notification_period 24x7

        notification_options w,u,c,r

        check_command check_mysql

        }

       

       

飞信报警

1.修改模板文件

修改concont.cfg

2.

修改

 commands.cfg

define command{

        command_name notify-service-by-fetion

        command_line      /usr/bin/fetion --mobile 15003880800 --pwd 123qweQWE --to 15003880800 --msg-tpye=0  --msg-utf8 $HOSTNAME

}


########################################

配置pnp,使其能够汇出流量图

tar zxvf pnp-0.4.12.tar.gz
cd pnp-0.4.12
./configure --with-nagios-user=nagios \
--with-nagios-group-nagios \
--with-rrdtool=/usr/local/rrdtool/bin/rrdtool \
--with-perfdata-dir=/var/www/nagios/share/perfdata 

#########################################

nagios常出的错误总结:

1、#错误提示:RRDs Perl Modules:                *** NOT FOUND ***
#解决方法:ln -sv /usr/local/rrdtool/lib/perl/5.8.8/i386-linux-thread-multi/auto/RRDs/RRDs.so /usr/lib/perl5/5.8.8/i386-linux-thread-multi/


2、 nagios 监控出现It appears as though you do not have permission
修改cgi.cfg文件
修改use_authentication=1 (默认) ,如果没有添加,重启nagios服务

3、Could not read object configuration data
  解决方法:killall nagios
/usr/local/nagios/bin/nagios -d /usr/local/nagios/etc/nagios.cfg
 
4、出现"NRPE: Command 'check_disks' not defined" 
当在客户端配置nagios-plugins好后,出现以上问题,主要是没有找当插件的命令。只要在客户端找到nrpe.cfg文件,加入正确的命令即可:

点击(此处)折叠或打开

  1. 打开nrpe.cfg文件找到command:加入以下的内容:

  2. command[check_swap]=/usr/local/nagios-plugins/libexec/check_swap -w 50% -c 20%
  3.  command[check_disk]=/usr/local/nagios-plugins/libexec/check_disk -w 20% -c 10%




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