nagios監控部署

時間 2019-12-05

標籤 nagios 監控部署简体版

原文原文鏈接

nagios監控部署。php

在部署以前把依賴包安裝了。html

[root@tiandong63 ~]# yum install -y gcc glibc glibc-common php gd gd-devel libpng libmng libjpeg zlib前端

[root@tiandong63 ~]# yum install -y httpd ; service httpd restartnode

[root@tiandong63 ~]# useradd nagios
[root@tiandong63 ~]# groupadd nagcmd
[root@tiandong63 ~]# usermod -G nagcmd nagios
[root@tiandong63 ~]# usermod -G nagcmd apachemysql

核心包的安裝：linux

[root@tiandong63 ~]#tar xf nagios-3.5.1.tar.gz -C /usr/local/src/ios

[root@tiandong63 ~]#cd /usr/local/src/nagiosweb

[root@tiandong63 nagios]# ./configure --with-command-group=nagcmd #指定nagios運行用戶組sql

[root@tiandong63 nagios]# make allapache

[root@tiandong63 nagios]# make install && make install-init && make install-commandmode && make install-config && make install-webconf

//如果單步執行，每次執行一部，都會提示你下一步須要幹什麼，很是easy

//make install安裝生成/usr/local/nagios/，其中/usr/local/nagios/share即nagiosWEB訪問界面的站點目錄

//make install-init 安裝生成/etc/rc.d/init.d/nagios 啓動腳本

//make install-config 安裝生成/usr/local/nagios/etc下的nagios相關配置文件

//make install-commandmode 設定相應nagios工做目錄的權限

//make install-webconf 安裝Nagios的WEB配置文件到Apache的conf.d目錄下

[root@tiandong63 nagios]# ll /usr/local/nagios/ #生成安裝目錄

total 24

drwxrwxr-x 2 nagios nagios 4096 Mar 19 23:06 bin

drwxrwxr-x 3 nagios nagios 4096 Mar 19 23:06 etc

drwxrwxr-x 2 nagios nagios 4096 Mar 19 23:06 libexec 腳本文件

drwxrwxr-x 2 nagios nagios 4096 Mar 19 23:06 sbin

drwxrwxr-x 10 nagios nagios 4096 Mar 19 23:06 share 瀏覽器訪問的頁面文件

drwxrwxr-x 5 nagios nagios 4096 Mar 19 23:06 var

[root@tiandong63 ~]# ll /usr/local/nagios/libexec/ 此時這個文件夾下面是空的

nagios主目錄

[root@XueGod63 Nagios]# ll /usr/local/nagios/

bin #Nagios執行程序所在目錄

etc #nagios配置文件所在目錄，初始安裝只有幾個*.cfg文件

libexec #監控所用命令，須要安裝了nagios-plugins插件了纔會有，檢測命令，不裝是空的

sbin #Nagios的Cgi文件所在目錄，外部命令所須要的文件存放目錄

share #Nagios前端頁面

var #日誌文件，pid文件等

nagios的配置文件：

[root@tiandong63 nagios]# vim /usr/local/nagios/etc/nagios.cfg

log_file=/var/log/nagios/nagios.log #日誌位置

cfg_file=/etc/nagios/objects/commands.cfg #這個文件定義了不少命令

cfg_file=/etc/nagios/objects/contacts.cfg #定義聯繫人，怎麼聯繫

cfg_file=/etc/nagios/objects/timeperiods.cfg #定義了時間段

cfg_file=/etc/nagios/objects/templates.cfg #模板（聯繫人，主機，時間）

cfg_file=/etc/nagios/objects/localhost.cfg #監控本機相關配置文件

#cfg_file=/etc/nagios/objects/windows.cfg #windows，默認不監控

#cfg_file=/etc/nagios/objects/switch.cfg #交換機路由器監控，默認不監控

#cfg_file=/etc/nagios/objects/printer.cfg #打印機監控，默認不監控

#cfg_dir=/etc/nagios/servers #定義了服務合集（多個使用）

#cfg_dir=/etc/nagios/printers #定義了打印機合集（多個使用）

#cfg_dir=/etc/nagios/switches #定義了交換合集（多個使用）

#cfg_dir=/etc/nagios/routers #定義了路由合集（多個使用）

resource_file=/etc/nagios/private/resource.cfg 資源變量配置文件，包括$USER1$變量（一個路徑）等

status_update_interval=10 #狀態更新時間，單位s

log_rotation_method=d #日誌滾動，默認天

service_check_timeout=60 #服務檢查超時時間

host_check_timeout=30 #主機檢查超時時間

event_handler_timeout=30

notification_timeout=30

ocsp_timeout=5

perfdata_timeout=5

[root@tiandong63 nagios]# vim /usr/local/nagios/etc/cgi.cfg 在這裏查看默認的認證用戶

//此配置文件比nagios.cfg優先級高

main_config_file= /usr/local/nagios/etc/nagios.cfg #主配置文件

physical_html_path= /usr/local/nagios/share #物理路徑

url_html_path=/nagios #在URL後面加上/nagios才能訪問

use_authentication=1 #使用認證

use_ssl_authentication=0 #不使用ssl

authorized_for_system_information=nagiosadmin #認證用戶

重啓httpd服務，測試。

須要用戶名和密碼，如今來建立用戶名和密碼。

[root@tiandong63 ~]# vim /etc/httpd/conf.d/nagios.conf 查看密碼爲位置

[root@tiandong63 ~]# htpasswd -c /usr/local/nagios/etc/htpasswd.users nagiosadmin 生成用戶名和密碼
New password:
Re-type new password:
Adding password for user nagiosadmin
[root@tiandong63 ~]# cat /usr/local/nagios/etc/htpasswd.users
nagiosadmin:MwGeiyh1pyQuY

重啓服務再次訪問

此時點擊其中的東西是報錯的，nagios服務沒有啓動

[root@tiandong63 ~]# /usr/local/nagios/bin/nagios -d /usr/local/nagios/etc/nagios.cfg

指定配置文件，以守護進程方式啓動此時就能夠了（默認是對本地主機進行監控的）

檢查配置文件：

[root@tiandong63 ~]# /usr/local/nagios/bin/nagios -v /usr/local/nagios/etc/nagios.cfg

Total Warnings: 0

Total Errors: 0 此時表示配置文件沒有問題

安裝插件

[root@tiandong63 ~]# tar -xf nagios-plugins-2.1.1.tar.gz -C /usr/local/src/

[root@tiandong63 nagios-plugins-2.1.1]# ./configure --with-nagios-user=nagios --with-nagios-group=nagcmd

[root@tiandong63 nagios-plugins-2.1.1]# make && make install

此時來看/usr/local/nagios/libexec/ 以前的時候下面是空的，此時下面沒有check-mysql

[root@tiandong63 ~]# yum install mysql mysql-devel -y 安裝了MySQL的包，在從新編譯主要是devel這個包

[root@tiandong63 nagios-plugins-2.1.1]# ./configure --with-nagios-user=nagios --with-nagios-group=nagcmd

[root@tiandong63 nagios-plugins-2.1.1]# make && make install

重啓httpd服務和nagios服務

監控本地nfs服務：

[root@tiandong63 ~]# cd /usr/local/nagios/etc/objects/
[root@tiandong63 objects]# ls
commands.cfg localhost.cfg switch.cfg timeperiods.cfg
contacts.cfg printer.cfg templates.cfg windows.cfg
[root@tiandong63 objects]# cp localhost.cfg localhost.cfg.bak 備份本地的配置文件

安裝一下nfs

[root@tiandong63 ~]# yum install -y nfs*

[root@tiandong63 ~]# /etc/init.d/nfs restart （先開啓rpc服務）

[root@tiandong63 ~]# vim /etc/exports 配置共享的目錄

/tmp *(rw)

[root@tiandong63 ~]# /etc/init.d/nfs restart

[root@tiandong63 ~]# showmount -e 192.168.1.63

Export list for 192.168.1.63:

/tmp *

重啓web服務和nagios服務

[root@tiandong63 ~]# service httpd restart && service nagios restart

此時監控裏面就有nfs了。

監控遠端MySQL：

[root@tiandong64 ~]# yum install mysql-server mysql -y

[root@tiandong64 ~]# mysql -uroot -p123456

mysql> create database nagiosdb;
Query OK, 1 row affected (0.00 sec)

mysql> grant select on nagiosdb.* to nagiosdb@192.168.1.63;
Query OK, 0 rows affected (0.00 sec)

[root@tiandong63 ~]# vim /usr/local/nagios/etc/nagios.cfg

34 cfg_file=/usr/local/nagios/etc/objects/hosts.cfg

35 cfg_file=/usr/local/nagios/etc/objects/service.cfg

[root@tiandong63 objects]# vim /usr/local/nagios/etc/objects/hosts.cfg

define host {

use linux-server

host_name xuegod64

alias mysql-server

address 192.168.1.64

}

[root@tiandong63 objects]# vim /usr/local/nagios/etc/objects/service.cfg

define service{

use local-service

host_name xuegod64

service_description mysqlser

check_command check_mysql

}

[root@tiandong63 objects]# vim /usr/local/nagios/etc/objects/commands.cfg

212 #'check mysql'

213 define command{

214 command_name check_mysql

215 command_line $USER1$/check_mysql -H $HOSTADDRESS$ -u nagiosdb -d nagiosdb

216 }

[root@tiandong63 objects]# /usr/local/nagios/libexec/check_mysql -H 192.168.1.64 -u nagiosdb -d nagiosdb #手動探測監控的MySQL

Uptime: 1067 Threads: 1 Questions: 31 Slow queries: 0 Opens: 16 Flush tables: 1 Open tables: 9 Queries per second avg: 0.29|Connections=15c;;; Open_files=18;;; Open_tables=9;;; Qcache_free_memory=0;;; Qcache_hits=0c;;; Qcache_inserts=0c;;; Qcache_lowmem_prunes=0c;;; Qcache_not_cached=0c;;; Qcache_queries_in_cache=0;;; Queries=31c;;; Questions=31c;;; Table_locks_waited=0c;;; Threads_connected=1;;; Threads_running=1;;; Uptime=1067c;;;

[root@tiandong63 objects]# service nagios restart 重啓服務
Running configuration check...done.
Stopping nagios: done.
Starting nagios: done.

此時去測試：（多了遠端的監控）

關閉遠程的MySQL服務時：

[root@tiandong64 ~]# /etc/init.d/mysqld stop
Stopping mysqld: [ OK ]

在去查看：

監控遠端web服務：

[root@tiandong64 ~]# yum install httpd -y

[root@tiandong64 ~]# /etc/init.d/httpd start
Starting httpd: httpd: Could not reliably determine the server's fully qualified domain name, using 192.168.1.64 for ServerName
[ OK ]

每監控一臺主機都必須寫一個hosts.cfg文件

[root@tiandong63 objects]# vim /usr/local/nagios/etc/objects/hosts.cfg

define host {

use linux-server

host_name xuegod64

alias mysql-server

address 192.168.1.64

}

因爲監控的是同一臺主機的服務，因此主機不用再定義了

[root@tiandong63 objects]# vim /usr/local/nagios/etc/objects/service.cfg

define service{

use local-service

host_name xuegod64

service_description mysqlser

check_command check_mysql

}

define service{

use local-service

host_name xuegod64

service_description apache

check_command check_apache

}

[root@tiandong63 objects]# vim /usr/local/nagios/etc/objects/commands.cfg

218 define command{

219 command_name check_apache

220 command_line $USER1$/check_tcp -H $HOSTADDRESS$ -p 80

221 }

手工探測是否能夠探測到：

[root@tiandong63 objects]# /usr/local/nagios/libexec/check_tcp -H 192.168.1.64 -p 80
TCP OK - 0.002 second response time on 192.168.1.64 port 80|time=0.001831s;;;0.000000;10.000000

[root@tiandong63 objects]# service nagios restart 重啓服務
Running configuration check...done.
Stopping nagios: done.
Starting nagios: done.

nagios監控外部主機私有信息

解決依賴：

[root@tiandong63 ~]# yum install -y openssl openssl-devel

[root@tiandong64 ~]# yum install -y openssl openssl-devel

[root@tiandong63 ~]# tar xf nrpe-2.15.tar.gz -C /usr/local/src/

[root@tiandong63 nrpe-2.15]# ./configure && make && make install

[root@tiandong63 nrpe-2.15]# make install-plugin && make install-daemon 前者安裝插件，後者以守護進程來運行

[root@tiandong63 nrpe-2.15]# ll /usr/local/nagios/libexec/check_nrpe 主要是爲了查看是否生成以下的插件
-rwxrwxr-x 1 nagios nagios 76785 Sep 24 08:47 /usr/local/nagios/libexec/check_nrpe 這個命令須要安裝nrpe以後纔有

被監控端配置：

[root@tiandong64 ~]# yum install -y openssl openssl-devel

[root@tiandong64 ~]# useradd -s /sbin/nologin nagios
[root@tiandong64 ~]# groupadd nagcmd
[root@tiandong64 ~]# usermod -G nagcmd nagios

[root@tiandong64 ~]# tar -xf nrpe-2.15.tar.gz -C /usr/local/src/

[root@tiandong64 ~]# tar -xf nagios-plugins-2.1.1.tar.gz -C /usr/local/src/

[root@tiandong64 nagios-plugins-2.1.1]# ./configure && make && make install

[root@tiandong64 nrpe-2.15]# ./configure && make && make install

[root@tiandong64 nrpe-2.15]# make install-daemon-config
/usr/bin/install -c -m 775 -o nagios -g nagios -d /usr/local/nagios/etc
/usr/bin/install -c -m 644 -o nagios -g nagios sample-config/nrpe.cfg /usr/local/nagios/etc
[root@tiandong64 nrpe-2.15]#

[root@tiandong64 nrpe-2.15]# make install-xinetd
/usr/bin/install -c -m 644 sample-config/nrpe.xinetd /etc/xinetd.d/nrpe
[root@tiandong64 nrpe-2.15]#

[root@tiandong64 nrpe-2.15]# vim /etc/xinetd.d/nrpe

[root@tiandong64 nrpe-2.15]# echo "nrpe 5666/tcp # NRPE" >> /etc/services 端口註冊

nrpe 5666/tcp # NRPE

#/etc/services文件的做用：

#做用1：xinet.d來啓動服務時他就會在/etc/services找相應服務對應的端口來啓動服務。找不到對應端口，將不啓動服務。

#做用2: 顯示對應端口對應的協議名。

#例如 iptables -L 不加-n參數，查看時，把 80轉 -> www http

#做用3：查看經常使用端口

[root@tiandong64 nrpe-2.15]# yum install -y xinetd

[root@tiandong64 nrpe-2.15]# /etc/init.d/xinetd start
Starting xinetd: [ OK ]
[root@tiandong64 nrpe-2.15]#

[root@tiandong64 ~]# netstat -antup|grep 5666
tcp 0 0 :::5666 :::* LISTEN 26870/xinetd

客戶端nrpe命令

[root@tiandong64 ~]# vim /usr/local/nagios/etc/nrpe.cfg

command[check_sda1]=/usr/local/nagios/libexec/check_disk -w 38% -c 35% -p /dev/sda1

command[check_sda2]=/usr/local/nagios/libexec/check_disk -w 42% -c 43% -p /dev/sda2

command[check_swap]=/usr/local/nagios/libexec/check_swap -w 20% -c 10%

#-w爲警告 -C爲告急 sda2中，咱們是指佔用42%

[root@tiandong64 ~]# /etc/init.d/xinetd restart

服務端手動測試

[root@tiandong63 ~]# /usr/local/nagios/libexec/check_nrpe -H 192.168.1.64
NRPE v2.15 對端的版本

[root@tiandong63 ~]# /usr/local/nagios/libexec/check_nrpe -H 192.168.1.64 -c check_sda1
DISK OK - free space: /boot 154 MB (84% inode=99%);| /boot=28MB;119;125;0;193
主機在上面的時候就已經定義了。

定義服務：

[root@tiandong63 ~]# vim /usr/local/nagios/etc/objects/service.cfg

定義NRPE監控命令

[root@tiandong63 ~]# vim /usr/local/nagios/etc/objects/commands.cfg

#'check nrpe'

define command{

command_name check_nrpe

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

}

[root@tiandong63 ~]# service nagios restart
Running configuration check...done.
Stopping nagios: done.
Starting nagios: done.

前段監控

測試：硬盤數據寫入測試，看看root partition會不會告急