Nagios 安装配置

Debian 6 安装server

        # apt-get install nagios*

    

一路设置好各种密码,成功后访问 http://ip/nagios3 既可，默认用户nagiosadmin

Centos 安装client

        rpm -Uvh http://dl.fedoraproject.org/pub/epel/6/x86_64/epel-release-6-8.noarch.rpm
rpm -Uvh http://rpms.famillecollet.com/enterprise/remi-release-6.rpm
yum -y install nagios nagios-plugins-all nrpe
chkconfig nrpe on

    

编辑配置文件 nano /etc/nagios/nrpe.cfg 将其中的allowed_hosts改为自己的值:

        allowed_hosts=192.168.1.2 #server地址

    

重启nrpe:

        service nrpe restart

    

配置Server端

检测一下是否能连接到client:

        /usr/lib/nagios/plugins/check_nrpe -H 192.168.2.11

    

进入/etc/nagios3/conf.d目录,新建并编辑my_nagios2.cfg:

        define host{
        use             generic-host
        host_name       mylinux
        alias           mylinux
        address         192.168.1.mylinux
        }
define service{
        use                     generic-service
        host_name               mylinux
        service_description     HTTP-Server
        check_command           check_http
        }


# Define a service to check the disk space of the root partition
# on the local machine.  Warning if < 20% free, critical if
# < 10% free space on partition.

define service{
        use                             generic-service         ; Name of service template to use
        host_name                       mylinux
        service_description             Disk Space
        check_command                   check_all_disks!20%!10%
        }



# Define a service to check the number of currently logged in
# users on the local machine.  Warning if > 20 users, critical
# if > 50 users.

define service{
        use                             generic-service         ; Name of service template to use
        host_name                       mylinux
        service_description             Current Users
        check_command                   check_users!20!50
        }


# Define a service to check the number of currently running procs
# on the local machine.  Warning if > 250 processes, critical if
# > 400 processes.

define service{
        use                             generic-service         ; Name of service template to use
        host_name                       mylinux
        service_description             Total Processes
        check_command                   check_procs!250!400
        }



# Define a service to check the load on the local machine. 

define service{
        use                             generic-service         ; Name of service template to use
        host_name                       mylinux
        service_description             Current Load
        check_command                   check_load!5.0!4.0!3.0!10.0!6.0!4.0
        }

    

重启服务:

        service nagios3 restart

    

添加Mysql监控插件

在server下载插件: cd /usr/lib/nagios/plugins wget https://raw.github.com/tart/tart-monitoring/master/checkMySQLProcesslist.sh chmod a+x checkMySQLProcesslist.sh

向command配置/etc/nagios3/commands.cfg中添加:

        define command{
    command_name   checkMySQLProcesslist
    command_line   /usr/lib/nagios/plugins/checkMySQLProcesslist.sh -u $ARG1$ -p $ARG2$ -s 60 -w 20 -c 50
}

    

向client配置/etc/nagios3/conf.d/my_nagios2.cfg中添加: define service{ use generic-service
host_name localhost service_description Mysql Process List check_command checkMySQLProcesslist!用户名!密码 }

然后重启服务:

        service nagios3 restart

    

other

> Nagios的插件编写很简单，同上mysql的插件，照葫芦画瓢就行，添加其他client节点，只要安装好相应系统的nrpe和nagios的插件，然后在server段添加一个配置文件就行。

原文：http://www.cnblogs.com/hangxin1940/p/3531942.html