nagios的安装配置

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

为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

 

 

在httpd的配置文件目录(conf.d)中创建Nagios的Web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nagios的CGI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

 

 

在web中输入http://IP/nagios 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

      在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

 

在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