nagios监控环境搭建-阿里云开发者社区

nagios监控环境搭建

1.目录

2. 相关环境

jk1 192.168.199.110 CentOS 6.5 x86_64

jk2 192.168.199.184 CentOS 6.5 x86_64

nagios 4.0.8

lnamp环境

3. 部署规划

Nagios主节点需要安装:

nagios

nagios-plugin

nrpe

php

apache

Nagios从节点需要安装:

nagios-plugin

nrpe

安装路径规划

项值

nagios安装路径 /usr/local/nagios

php安装路径 /usr/local/php

apache安装路径 /usr/local/apache2

4. 代码获取

nagios-4.0.2.tar.gz

nagios-plugins-1.5.tar.gz

nrpe-2.15.tar.gz

httpd-2.2.23.tar.gz

php-5.4.10.tar.gz

5. 前提依赖

5.1 主机环境检查(全部节点)

# rpm -q gcc glibc glibc-common gd gd-devel xinetd openssl-devel

gcc-4.4.7-3.el6.x86_64

glibc-2.14.1-6.x86_64

glibc-common-2.14.1-6.x86_64

gd-2.0.35-11.el6.x86_64

package gd-devel is not installed

package xinetd is not installed

openssl-devel-1.0.0-27.el6.x86_64

若有缺失,请先安装. 可通过如下几个镜像网站下载相关安装包:

http://rpm.pbone.net/

http://mirrors.163.com/centos/6.4/os/x86_64/Packages/

http://mirrors.sohu.com/centos/6.4/os/x86_64/Packages/

安装后再次检查如下：

# rpm -q gcc glibc glibc-common gd gd-devel xinetd openssl-devel

gcc-4.4.7-3.el6.x86_64

glibc-2.14.1-6.x86_64

glibc-common-2.14.1-6.x86_64

gd-2.0.35-11.el6.x86_64

gd-devel-2.0.35-11.el6.x86_64

xinetd-2.3.14-38.el6.x86_64

openssl-devel-1.0.0-27.el6.x86_64

6. 编译安装

6.1 创建用户nagios(全部节点)

useradd nagios -d /usr/local/nagios

passwd nagios (密码自定义)

chmod 777 nagios

6.2 安装nagios主程序(主节点安装)

tar -zxf nagios-4.0.2.tar.gz

cd nagios-4.0.2

./configure --prefix=/usr/local/nagios

make all

make install && make install-init && make install-commandmode && make install-config

将nagios添加为服务

chkconfig --add nagios

chkconfig nagios off

chkconfig --level 35 nagios on

chkconfig --list nagios

nagios 0:关闭 1:关闭 2:关闭 3:启用 4:关闭 5:启用 6:关闭

6.3 安装nagios插件(全部节点安装)

tar -zxf nagios-plugins-1.5.tar.gz

cd nagios-plugins-1.5

./configure --prefix=/usr/local/nagios --with-nagios-user=nagios --with-nagios-group=nagios --with-mysql=/usr/local/mysql

make && make install

如果出现mysql相关的编译错误,是mysql的默认安装路径被修改导致的,调整with-mysql后重新make

./configure --prefix=/usr/local/nagios --with-mysql=/usr/local/mysql （多余）

make && make install

6.4 安装NRPE(全部节点安装)

tar -zxf nrpe-2.15.tar.gz

cd nrpe-2.15

./configure --enable-command-args

make all

make install-plugin

下面步骤只需要在被监控节点执行

make install-daemon && make install-daemon-config && make install-xinetd

6.4.1 被监控节点配置

如果是被监控节点,需要配置NRPE已守护进程运行(通过xinetd来运行)

1、更改/etc/xinetd.d/nrpe文件，设置允许nagios主节点服务器连接

vi /etc/xinetd.d/nrpe

only_from = 127.0.0.1 192.168.56.10

2、在/etc/services结尾增加：

nrpe 5666/tcp # NRPE

3、增加对参数的支持

vi /usr/local/nagios/etc/nrpe.cfg

dont_blame_nrpe=1

4、启动xinetd

service xinetd restart

5、验证nrpe是否监听

netstat -at | grep nrpe

6、测试nrpe是否正常运行

/usr/local/nagios/libexec/check_nrpe -H localhost

NRPE v2.15

这里会报错,没事，把localhost换成127.0.0.1

6.4.2 主节点配置

如果是监控服务主节点，在全部被监控节点NRPE配置完成后，可以依次做下检测

/usr/local/nagios/libexec/check_nrpe -H 192.168.56.11

NRPE v2.15

/usr/local/nagios/libexec/check_nrpe -H 192.168.56.12

NRPE v2.15

6.5 安装Apache(主节点安装)

tar -zxf httpd-2.2.23.tar.gz

cd httpd-2.2.23

./configure --prefix=/usr/local/apache2

make && make install

6.6 安装PHP(主节点安装)

cd /export/home/tools/soft/php

tar -zxf php-5.4.10.tar.gz

cd /php-5.4.10

./configure --prefix=/usr/local/php --with-apxs2=/usr/local/apache2/bin/apxs

make && make install

6.7 使用apache 发布PHP的WEB

vi /usr/local/apache2/conf/httpd.conf

....

Listen 80

.... 在下面这个模块里面添加

DirectoryIndex index.html index.php

AddType application/x-httpd-php .php

</IfModule>

.... 没有此模块，添加新如下模块

#setting for nagios

ScriptAlias /nagios/cgi-bin "/usr/local/nagios/sbin"

AuthType Basic

Options ExecCGI

AllowOverride None

Order allow,deny

Allow from all

AuthName "Nagios Access"

AuthUserFile /usr/local/nagios/etc/htpasswd

Require valid-user

</Directory>

Alias /nagios "/usr/local/nagios/share"

AuthType Basic

Options None

AllowOverride None

Order allow,deny

Allow from all

AuthName "nagios Access"

AuthUserFile /usr/local/nagios/etc/htpasswd

Require valid-user

</Directory>

为web访问时添加用户名和密码(此处用户名为admin,可自定义)

/usr/local/apache2/bin/htpasswd -c /usr/local/nagios/etc/htpasswd admin

启动apache

/usr/local/apache2/bin/apachectl start

访问页面：http://192.168.56.10/nagios/

出现欢迎界面。

7. 配置Nagios

7.1 配置远程被监控节点监控节点配置

7.1.1 修改配置文件

# su - nagios

$ vi /usr/local/nagios/etc/nrpe.cfg

修改为如下配置内容：

command[check_users]=/usr/local/nagios/libexec/check_users -w $ARG1$ -c $ARG2$

command[check_load]=/usr/local/nagios/libexec/check_load -w $ARG1$ -c $ARG2$

command[check_disk]=/usr/local/nagios/libexec/check_disk -w $ARG1$ -c $ARG2$ -p $ARG3$

command[check_procs]=/usr/local/nagios/libexec/check_procs -w $ARG1$ -c $ARG2$ -s $ARG3$

command[check_procs_args]=/usr/local/nagios/libexec/check_procs $ARG1$

command[check_swap]=/usr/local/nagios/libexec/check_swap -w $ARG1$ -c $ARG2$

以上监控命令功能:

check_users 监控登陆用户数

check_load 监控CPU负载

check_disk 监控磁盘的使用

check_procs 监控进程数量,状态包括 RSZDT

check_swap 监控SWAP分区使用

7.1.2 重启xinetd服务

配置完上述命令后,重启 xinetd服务

root：

service xinetd restart

7.1.3 校验配置

检查监控命令配置是否ok

/usr/local/nagios/libexec/check_nrpe -H localhost -c check_users -a 5 10

/usr/local/nagios/libexec/check_nrpe -H localhost -c check_load -a 15,10,5 30,25,20

/usr/local/nagios/libexec/check_nrpe -H localhost -c check_disk -a 20% 10% /

/usr/local/nagios/libexec/check_nrpe -H localhost -c check_procs -a 200 400 RSZDT

/usr/local/nagios/libexec/check_nrpe -H localhost -c check_swap -a 20% 10%

7.2 配置监控服务主节点

7.2.1 cgi.cfg(控制CGI访问的配置文件)

(使用 nagios 用户)

vi /usr/local/nagios/etc/cgi.cfg

修改如下内容,为admin用户增加权限：

default_user_name=admin 取消注释

authorized_for_system_information=nagiosadmin,admin 添加admin

authorized_for_configuration_information=nagiosadmin,admin

authorized_for_system_commands=nagiosadmin,admin

authorized_for_all_services=nagiosadmin,admin

authorized_for_all_hosts=nagiosadmin,admin

authorized_for_all_service_commands=nagiosadmin,admin

authorized_for_all_host_commands=nagiosadmin,admin

7.2.2 nagios.cfg(nagios主配置文件)

(使用 nagios 用户)

vi /usr/local/nagios/etc/nagios.cfg

#cfg_file=/export/home/nagios/etc/objects/localhost.cfg (注释掉)

cfg_dir=/export/home/nagios/etc/servers

没有/exprot/home目录就用/usr/local/即可

主配置文件声明了监控脚本的存储路径为 ./servers，默认没有此目录，需要手工创建

nagios 会读取 servers 目录下面后缀为.cfg的全部文件作为配置文件

cd /usr/local/nagios/etc

mkdir servers

cd servers

7.2.3 定义监控的主机组

声明一个监控的主机组,将主机环境中提到的三台主机全部加入监控

vi /export/home/nagios/etc/servers/group.cfg

新文件，内容如下：

define hostgroup{

hostgroup_name duangr-server

alias duangr Server

members duangr-1,duangr-2,duangr-3

}

解释下上面的配置：

hostgroup_name: 主机组的名称，可随意指定

alias: 主机组别名，可随意指定

members: 主机组成员，多个主机名称之前使用逗号分隔。另外主机名称必须与 define host 中host_name 一致。

主机的定义，后面会说到。

7.2.4 定义监控的主机

下面开始定义具体的主机

7.2.4.1 本地主机监控配置

先定义本地主机 duangr-1

vi /export/home/nagios/etc/servers/duangr-1.cfg

新文件，内容如下：

define host{

use linux-server

host_name duangr-1

alias duangr-1

address 192.168.56.10

}

define service{

use local-service

host_name duangr-1

service_description Host Alive

check_command check-host-alive

}

define service{

use local-service

host_name duangr-1

service_description Users

check_command check_local_users!20!50

}

define service{

use local-service

host_name duangr-1

service_description CPU

check_command check_local_load!5.0,4.0,3.0!10.0,6.0,4.0

}

define service{

use local-service

host_name duangr-1

service_description Disk Root

check_command check_local_disk!20%!10%!/

}

define service{

use local-service

host_name duangr-1

service_description Disk Home

check_command check_local_disk!20%!10%!/export/home

}

define service{

use local-service

host_name duangr-1

service_description Zombie Procs

check_command check_local_procs!5!10!Z

}

define service{

use local-service

host_name duangr-1

service_description Total Procs

check_command check_local_procs!250!400!RSZDT

}

define service{

use local-service

host_name duangr-1

service_description Swap Usage

check_command check_local_swap!20!10

}

说明下，由于是此主机也是监控服务主节点所在主机，因此可以使用check_local_* 的相关命令来进行监控。

这个文件中已经将常用的监控项配置进去。

都是在主机上面配置

7.2.4.2 远程主机监控配置

再定义远程主机duangr-2和duangr-3

定义远程主机的监控之前，需要先定义check_nrpe命令

vi /usr/local/nagios/etc/objects/commands.cfg

在文件的最后面添加如下内容：

# 'check_nrpe' command definition

define command{

command_name check_nrpe

command_line $USER1$/check_nrpe -H $HOSTADDRESS$ -t 30 -c $ARG1$

}

define command{

command_name check_nrpe_args

command_line $USER1$/check_nrpe -H $HOSTADDRESS$ -t 30 -c $ARG1$ -a $ARG2$

}

定义duangr-2主机的监控配置

$ vi /usr/local/nagios/etc/servers/duangr-2.cfg

注意：复制的时候define host容易漏掉

新文件，内容如下：

define host{

use linux-server

host_name duangr-2

alias duangr-2

address 192.168.56.11

}

define service{

use local-service

host_name duangr-2

service_description Host Alive

check_command check-host-alive

}

define service{

use local-service

host_name duangr-2

service_description Users

check_command check_nrpe_args!check_users!5 10

}

define service{

use local-service

host_name duangr-2

service_description CPU

check_command check_nrpe_args!check_load!15,10,5 30,25,20

}

define service{

use local-service

host_name duangr-2

service_description Disk Root

check_command check_nrpe_args!check_disk!20% 10% /

}

define service{

use local-service

host_name duangr-2

service_description Disk /export/home

check_command check_nrpe_args!check_disk!20% 10% /export/home

}

define service{

use local-service

host_name duangr-2

service_description Procs Zombie

check_command check_nrpe_args!check_procs!5 10 Z

}

define service{

use local-service

host_name duangr-2

service_description Procs Total

check_command check_nrpe_args!check_procs_args!"-w400 -c600"

}

define service{

use local-service

host_name duangr-2

service_description Swap Usage

check_command check_nrpe_args!check_swap!20% 10%

}

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

;; 下面是一些常用进程的监控,主要是云平台相关进程

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

;; 监控crond进程

define service{

use local-service

host_name duangr-2

service_description PS: crond

check_command check_nrpe_args!check_procs_args!"-c1:1 -Ccrond"

}

;; 监控zookeeper进程

define service{

use local-service

host_name duangr-2

service_description PS: QuorumPeerMain

check_command check_nrpe_args!check_procs_args!"-c1:1 -Cjava -aserver.quorum.QuorumPeerMain"

}

;;监控storm的从节点进程

define service{

use local-service

host_name duangr-2

service_description PS: supervisor

check_command check_nrpe_args!check_procs_args!"-c1:1 -Cjava -adaemon.supervisor"

}

;; 监控storm的主节点进程

define service{

use local-service

host_name duangr-2

service_description PS: nimbus

check_command check_nrpe_args!check_procs_args!"-c1:1 -Cjava -adaemon.nimbus"

}

;; 监控MetaQ进程

define service{

use local-service

host_name duangr-2

service_description PS: MetaQ

check_command check_nrpe_args!check_procs_args!"-c1:1 -Cjava -ametamorphosis-server-w"

}

;; 监控Redis进程

define service{

use local-service

host_name duangr-2

service_description PS: redis-server

check_command check_nrpe_args!check_procs_args!"-c1:1 -Credis-server"

}

;; 监控hadoop主节点NameNode进程

define service{

use local-service

host_name duangr-2

service_description PS: NameNode

check_command check_nrpe_args!check_procs_args!"-c1:1 -Cjava -aserver.namenode.NameNode"

}

;; 监控hadoop主节点SecondaryNameNode进程

define service{

use local-service

host_name duangr-2

service_description PS: SecondaryNameNode

check_command check_nrpe_args!check_procs_args!"-c1:1 -Cjava -aserver.namenode.SecondaryNameNode"

}

;; 监控hadoop主节点ResourceManager进程

define service{

use local-service

host_name duangr-2

service_description PS: ResourceManager

check_command check_nrpe_args!check_procs_args!"-c1:1 -Cjava -aserver.resourcemanager.ResourceManager"

}

;; 监控hadoop从节点DataNode进程

define service{

use local-service

host_name duangr-2

service_description PS: DataNode

check_command check_nrpe_args!check_procs_args!"-c1:1 -Cjava -aserver.datanode.DataNode"

}

;;监控hadoop从节点NodeManager进程

define service{

use local-service

host_name duangr-2

service_description PS: NodeManager

check_command check_nrpe_args!check_procs_args!"-c1:1 -Cjava -aserver.nodemanager.NodeManager"

}

说明下,由于duangr-2是远程主机,因此使用check_nrpe_args命令来监控.

这个文件中已经将常用的监控项配置进去, 同时还包含了hadoop、storm、zookeeper、metaq、redis的相关进程监控，主要的监控思路是判断进程是否存在。

定义duangr-3主机的监控配置

vi duangr-3.cfg

内容与duangr-2.cfg类似,只需要修改 host_name 、alias、 address即可.

主机配置

7.2.4.3 邮件监控

定义监控人邮件地址

vi /usr/local/nagios/etc/objects/contacts.cfg

define contact{

contact_name nagiosadmin ; Short name of user

use generic-contact ; Inherit default values from generic-contact template (defined above)

alias Nagios Admin ; Full name of user

email 125177796@qq.com

; <<***** CHANGE THIS TO YOUR EMAIL ADDRESS ******

}

除了配置监控邮件的接收人外，还要确保：

本主机与邮件服务器互通

本主机SendMail可以使用外部SMTP服务发送邮件

7.2.4.4 校验配置

/usr/local/nagios/bin/nagios -v /usr/local/nagios/etc/nagios.cfg

成功提示：

[root@jk1 ~]# /usr/local/nagios/bin/nagios -v /usr/local/nagios/etc/nagios.cfg

Nagios Core 4.0.8

Last Modified: 08-12-2014

License: GPL

Website: http://www.nagios.org

Reading configuration data...

Read main config file okay...

Read object config files okay...

Running pre-flight check on configuration data...

Checking objects...

Checked 27 services.

Checked 2 hosts.

Checked 1 host groups.

Checked 0 service groups.

Checked 1 contacts.

Checked 1 contact groups.

Checked 26 commands.

Checked 5 time periods.

Checked 0 host escalations.

Checked 0 service escalations.

Checking for circular paths...

Checked 2 hosts

Checked 0 service dependencies

Checked 0 host dependencies

Checked 5 timeperiods

Checking global event handlers...

Checking obsessive compulsive processor commands...

Checking misc settings...

Total Warnings: 0

Total Errors: 0

Things look okay - No serious problems were detected during the pre-flight check

7.2.4.5 启动

/usr/local/nagios/bin/nagios -d /usr/local/nagios/etc/nagios.cfg

nagios已经是一个服务，也可以执行如下操作：

service nagios start/stop/restart/status

8. 监控页面

http://192.168.199.110/nagios

请多指教。

参考：

http://www.centoscn.com/image-text/config/2013/1216/2236.html

http://www.cnblogs.com/mchina/archive/2013/02/20/2883404.html

nagios监控环境搭建

热门文章

最新文章

相关电子书