sakananote: Nagios with openSUSE 13.1 - 監控 Management Port 與設定 parent 關係

目的: 監控目前專案還有自己的設備

主要監控伺服器的 Management Port, 適用於財產保管人是自己, 但是系統是別的同事維運
另外透過建立 switch 以及設定 parent ( 父物件 ), 讓網路 map 更清楚

OS: openSUSE 13.1

# zypper install nagios nagios-plugins

# htpasswd2 -c /etc/nagios/htpasswd.users nagiosadmin

# chkconfig nagios --list

# chkconfig nagios on

# chkconfig nagios --list

重新啟動.apache2 並設定開機啟動

#rcapache2 restart

#rcapache2 status

#systemctl is-enabled apache2.service

#systemctl enable apache2.service

#systemctl is-enabled apache2.service

6.啟動Nagios

#rcnagios start

#yast2 firewall

開啟 http 服務

#vi /etc/nagios/objects/localhost.cfg

註解 HTTP, linux-servers 群組以及調整 Total Process

# 2014/1/8 edit by sakana, temp disable HTTP monitor

#define service{

# use local-service ; Name of service template to use

# host_name localhost

# service_description HTTP

# check_command check_http

# notifications_enabled 0

# }

# Define an optional hostgroup for Linux machines

#define hostgroup{

# hostgroup_name linux-servers ; The name of the hostgroup

# alias Linux Servers ; Long name of the group

# members localhost ; Comma separated list of hosts that belong to this group

# }

# 2014/1/8 edit by sakana change check_local_procs from 250 to 400, 400 to 800

define service{

use local-service ; Name of service template to use

host_name localhost

service_description Total Processes

check_command check_local_procs!400!800!RSZDT

}

解除http警告狀態

檢視 Nagios 設定有沒有問題

#nagios -v /etc/nagios/nagios.cfg

重新啟動 Nagios

#rcnagios restart

安裝 nagios-nrpe 套件

#yast -i nagios-nrpe nagios-plugins-nrpe

下載之前自己建立的範本檔案 ( 中心firewall有擋, 我是用 scp 過去的 )

#wget https://dl.dropboxusercontent.com/u/12787647/20131227nagios/server-templates20131227.cfg

覆蓋且移動原來的設定檔

# mv server-templates20131227.cfg /etc/nagios/objects/templates.cfg

( 中心firewall有擋, 我是用 scp 過去的 )

#wget https://dl.dropboxusercontent.com/u/12787647/20131227nagios/server-commands.cfg

覆蓋且移動原來的設定檔

# mv server-commands.cfg /etc/nagios/objects/commands.cfg

建立之後存放 Server 與一般工作站的設定檔目錄

#mkdir /etc/nagios/servers

#mkdir /etc/nagios/pcs

#mkdir /etc/nagios/racks

取得事先寫好的 linuxPublic.cfg 複製給公用服務使用並複製到 /etc/nagios/servers目錄

( 中心firewall有擋, 我是用 scp 過去的 )

# wget https://dl.dropboxusercontent.com/u/12787647/20140811Nagios/linuxPublic.cfg

#mv linuxPublic.cfg /etc/nagios/objects/

修改 /etc/nagios/nagios.cfg 內的設定讓 *.cfg 設定載入, 可以監控nagios Clinet

#vi /etc/nagios/nagios.cfg

加入

cfg_dir=/etc/nagios/servers

cfg_dir=/etc/nagios/pcs

cfg_dir=/etc/nagios/racks

註解 /etc/nagios/objects/windows.cfg 內的 windows-servers, 因為已經定義到 templates.cfg

# vi /etc/nagios/objects/windows.cfg

#define hostgroup{

# hostgroup_name windows-servers ; The name of the hostgroup

# alias Windows Servers ; Long name of the group

# }

修改 templates.cfg 加入 rack-host 主機範本以及群組

# vi /etc/nagios/objects/templates.cfg

# Rack host definition template - This is NOT a real host, just a template!

# 這個host 範本是為了只想監控實體主機管理IP, 但是系統管理人不是自己的template

define host{

name rack-host ; The name of this host template

use generic-host ; This template inherits other values from the generic-host template

check_period 24x7 ; By default, Linux hosts are checked round the clock

check_interval 5 ; Actively check the host every 5 minutes

retry_interval 1 ; Schedule host check retries at 1 minute intervals

max_check_attempts 10 ; Check each Linux host 10 times (max)

check_command check-host-alive ; Default command to check Linux hosts

notification_period workhours ; Linux admins hate to be woken up, so we only notify during the day

; Note that the notification_period variable is being overridden from

; the value that is inherited from the generic-host template!

notification_interval 120 ; Resend notifications every 2 hours

notification_options d,u,r ; Only send notifications for specific host states

contact_groups admins ; Notifications get sent to the admins by default

hostgroups rack-group ; Host groups that Rack server should be a member of 這邊是額外加入

}

# 這一段是新增的區段, 為了Rack Host 群組而設定---- start-------------------------------------------------------------

# Define host group for Rack hosts

define hostgroup{

hostgroup_name rack-group ; The name of the hostgroup

alias Rack Hosts Group ; Long name of the group

}

# 這一段是新增的區段, 為了Rack Host 群組而設定---- end -------------------------------------------------------------

複製範本檔案來修改為 rackHost.cfg

# cp /etc/nagios/objects/linuxPublic.cfg /etc/nagios/objects/rackHost.cfg

修改檔案內容

# vi /etc/nagios/objects/rackHost.cfg

註解所有的 service

修改套用的範本

define host{

use rack-host ; Inherit default values from a template 這邊要參照/etc/nagios/objects/templates.cfg 內的名稱

host_name S_b11_9U ; The name we're giving to this host 主機名稱(簡稱)(機房位置_機櫃位置_起始U數)

alias B11 Rack at 9 ~ 10U; A longer name associated with the host 主機名稱(長)

address 192.168.1.3 ; IP address of the host 這邊請修改為實際上的IP

}

複製範本檔案來建立我們想監控的機器(請自行命名 xxx.cfg)

# cp /etc/nagios/objects/rackHost.cfg /etc/nagios/racks/S_C13_12U.cfg

修改

# vi /etc/nagios/racks/S_C13_12U.cfg

修改主機名稱對應實際狀況

修改 address 後面的IP, 對應到可以存取的 IP

address x.y.z.w

檢視 Nagios 設定有沒有問題

#nagios -v /etc/nagios/nagios.cfg

這邊可能會有警告, 因為 rack 主機我們只檢查主機不檢查服務

重新啟動 Nagios

#rcnagios restart

** Nagios Map icon **

直接使用預設的 icon ( /usr/share/nagios/images/logos 下 )

修改 templates.cfg

# vi /etc/nagios/objects/templates.cfg

加入 icon 相關設定, rack-host 比照辦理

define host{

name linux-server ; The name of this host template