4月 172013
 

……

nagios-monitor-01

主配置文件nagios.cfg默认引用的对象配置文件

cfg_file=/usr/local/nagios/etc/objects/commands.cfg
cfg_file=/usr/local/nagios/etc/objects/contacts.cfg
cfg_file=/usr/local/nagios/etc/objects/timeperiods.cfg
cfg_file=/usr/local/nagios/etc/objects/templates.cfg
cfg_file=/usr/local/nagios/etc/objects/localhost.cfg

Localhost监控对象配置文件分析

定义主机

define host{
        use                     linux-server
        host_name               localhost
        alias                   localhost
        address                 127.0.0.1
        }

use 定义当前主机使用的主机模板,引用在templates.cfg中已定义的linux-server主机模板
hostname 定义显示在nagios web管理界面中的主机名称
alias 别名,主机名的完整描述
address 定义当前主机IP地址

定义主机组

 define hostgroup{
 hostgroup_name  linux-servers
 alias           Linux Servers
 members         localhost
 }

主机组用来定相似服务类型或处于同一地域的一组主机
hostgroup_name 定义当前主机组名称
alias 主机组别名,主机组名称的完整描述
members 定义当前主机组中包含的主机,使用已定义主机名称并使用逗号分隔

定义服务(定义具体的监控项目)

监控已定义主机localhost的ping响应
define service{
use                             local-service         ; Name of service template to use
host_name                       localhost
service_description             PING
check_command                   check_ping!100.0,20%!500.0,60%
}

use 引用在templates.cfg中已定义的服务模板
hostname 指定启用此监控项目的已定义的主机名
service_description 显示在nagios web界面的服务名称
check_command

配置文件中检测命令的完整工作过程

查看

[root@monitor objects]# pwd
 /usr/local/nagios/etc/objects
[root@monitor objects]# ls ../../libexec/check_ping
 ../../libexec/check_ping
[root@monitor objects]#
[root@monitor objects]# ../../libexec/check_ping
 check_ping: Could not parse arguments
 Usage:
 check_ping -H <host_address> -w <wrta>,<wpl>% -c <crta>,<cpl>%
[-p packets] [-t timeout] [-4|-6]
[root@monitor objects]#

-w 指定警告数值和百分比
-c 指定临界数值和百分比

nagios检测命令的完整格式及返回结果

[root@monitor objects]# ../../libexec/check_ping -H localhost -w 100.0,20% -c 500.0,60%
 PING OK - Packet loss = 0%, RTA = 0.05 ms|rta=0.046000ms;100.000000;500.000000;0.000000 pl=0%;20;60;0
 [root@monitor objects]#

响应时间达到或超过100毫秒进入警告状态,响应时间达到或超过500毫秒进入临界状态
检测得到的实际响应时间为0.05毫秒

监控已定义主机的localhost的根分区(/)可用磁盘容量

define service{
 use                             local-service         ; Name of service template to use
 host_name                       localhost
 service_description             Root Partition
 check_command                   check_local_disk!20%!10%!/
 }

check_command中的check_local_disk实际为引用命令定义文件commands.cfg已定义命令名称
# ‘check_local_disk’ command definition
define command{
command_name    check_local_disk
command_line    $USER1$/check_disk -w $ARG1$ -c $ARG2$ -p $ARG3$
}

nagios检测命令的完整格式及返回结果
[root@monitor libexec]# ./check_disk
check_disk: Could not parse arguments
Usage:
check_disk -w limit -c limit [-W limit] [-K limit] {-p path | -x device}
[-C] [-E] [-e] [-g group ] [-k] [-l] [-M] [-m] [-R path ] [-r path ]
[-t timeout] [-u unit] [-v] [-X type]
[root@monitor libexec]# ./check_disk -w 20% -c 10% -p /
DISK OK – free space: / 45970 MB (96% inode=98%);| /=1866MB;40316;45356;0;50396
[root@monitor libexec]#

监控已定义主机的localhost的当前登录用户
define service{
use                             local-service         ; Name of service template to use
host_name                       localhost
service_description             Current Users
check_command                   check_local_users!20!50
}

监控已定义主机的localhost的进程数量
define service{
use                             local-service         ; Name of service template to use
host_name                       localhost
service_description             Total Processes
check_command                   check_local_procs!250!400!RSZDT
}

监控已定义主机的localhost的负载状态
define service{
use                             local-service         ; Name of service template to use
host_name                       localhost
service_description             Current Load
check_command                   check_local_load!5.0,4.0,3.0!10.0,6.0,4.0
}

监控已定义主机的localhost的磁盘交换空间使用状态
define service{
use                             local-service         ; Name of service template to use
host_name                       localhost
service_description             Swap Usage
check_command                   check_local_swap!20!10
}

监控已定义主机的localhost的ssh服务或端口开启状态
define service{
use                             local-service         ; Name of service template to use
host_name                       localhost
service_description             SSH
check_command                   check_ssh
notifications_enabled           0
}

监控已定义主机的localhost的web服务或80端口状态
define service{
use                             local-service         ; Name of service template to use
host_name                       localhost
service_description             HTTP
check_command                   check_http
notifications_enabled           0
}

 Leave a Reply

You may use these HTML tags and attributes: <a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <s> <strike> <strong>

(required)

(required)

此站点使用Akismet来减少垃圾评论。了解我们如何处理您的评论数据