nagios+cacti部署

nagios+cacti部署安装

 

一、说明

闲暇之余,安装nagios+cacti,想看下最终实现效果;本文档规范网络监控系统安装流程及安装内容,供运维人员在部署新的运营环境时参考使用。

二、Nagios的安装

 

1、下载

#wget

http://jaist.dl.sourceforge.net/project/nagios/nagios-3.x/nagios-3.5.0/nagios-3.5.0.tar.gz  (nagios主程序)

#wgethttp://jaist.dl.sourceforge.net/project/nagiosplug/nagiosplug/1.4.16/nagios-plugins-1.4.16.tar.gz  (监控插件)

#wgethttp://jaist.dl.sourceforge.net/project/nagios/nrpe-2.x/nrpe-2.14/nrpe-2.14.tar.gz  (nrpe插件)

2、需要的基础套件

#rpm-q gcc glibc glibc-common gd gd-devel openssl-devel httpd php

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3、创建用户和组

#useradd nagios

#mkdir /usr/local/nagios

#chown -R nagios.nagios /usr/local/nagios

 

4、编译安装

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

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#make all

#make install

#make install-init

#make install-commandmode

#make install-config

#make install-webconf

 

5、创建Apache用户验证文件

创建一个nagiosadmin账户:

#htpasswd -c /usr/local/nagios/etc/htpasswd.users nagiosadmin

 

6、常用的命令

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

 

7、安装nagios-plugins

#./configure  --with-nagios-user=nagios--with-nagios-group=nagios

#make&& make install

 

8、安装nrpe(监控端)

#./configure

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#make all && make install-plugin

 

9、被监控端安装

1、系统环境

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10、下载

#wgethttp://jaist.dl.sourceforge.net/project/nagiosplug/nagiosplug/1.4.16/nagios-plugins-1.4.16.tar.gz  (监控插件)

#wgethttp://jaist.dl.sourceforge.net/project/nagios/nrpe-2.x/nrpe-2.14/nrpe-2.14.tar.gz (nrpe插件)

 

11、创建用户

#useradd nagios

#passwd nagios

 

12、检查基础套件

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

 

13、安装nagios-plugins

#./configure

#make && make install

 

14、修改目录权限

#chown nagios.nagios /usr/local/nagios

#chown -R nagios.nagios /usr/local/nagios/libexec

 

15、安装nrpe

#./configure

#make all

#make install-plugin  安装check_nrpe

#make install-daemon

#make install-daemon-config

 

16、配置nrpe

#vi /usr/local/nagios/etc/nrpe.cfg   添加  allowed_hosts=192.168.40.128

 

17、启动nrpe

#/usr/local/nagios/bin/nrpe  -c/usr/local/nagios/etc/nrpe.cfg -d

 

18、测试一下

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

 

19、随机启动

#echo "/usr/local/nagios/bin/nrpe  -c/usr/local/nagios/etc/nrpe.cfg -d" >> /etc/rc.local

 

20、配置

1、# vi /usr/local/nagios/etc/objects/commands.cfg

definecommand{

        command_name    check_nrpe        

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

        }

 

 

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

至此nagios的服务端与客户端搭建完成

三、安装cacti

Cacti的运行需要LAMP(Linux+Apache + MySQL + PHP), RRDTool ,net-snmp , AMP

正确配置各主机网络参数,本实验以一台机器既为服务端也为被监测端

[root@localhost~]#vim/etc/sysconfig/network-scrip/ifcfg-eth0

在被监测端安装net-snmp软件包,net-snmp软件需要用到lm_sensors提供的硬件监视模块,安装时直接使用RHEL5系统光盘中的rpm包文件,依次安装lm_sensors、net-snmp两个软件包即可。

[root@localhost~]# cd /mnt/Server/

[root@localhostServer]# rpm -ivh lm_sensors-2.10.0-3.1.i386.rpm

[root@localhostServer]# rpm -ivh net-snmp-5.3.1-14.el5.i386.rpm

3、配置及启动snmpd服务,修改文件/etc/snmp/snmpd.conf第41、62、85行,设置SNMP访问权限

41行中将default修改为cacti监测服务器的IP地址本实验为192.168.4.1将public修改为共享SNMP信息的组识别字串publicsvr,62行 将systemview修改为all,85行去掉开头注释符号

41com2sec notConfigUser  192.168.4.1       publicsvr

62access  notConfigGroup ""      any      noauth    exact  all none none

iewall    included  .1                               80

4、启动snmpd服务并设置为自启动

[root@localhostServer]# service snmpd start

启动 snmpd:                                              [确定]

[root@localhostServer]# chkconfig --level 35 snmpd on

5、配置监测服务端

   Cacti监测服务端需要有apache、mysql、php网站平台的支持,且需要预先安装有gd、zlib等软件包

httpd-2.2.3-6.el5

mysql-5.0.22-2.1 

mysql-server-5.0.22-2.1

mysql-connector-odbc-3.51.12-2.2

php-5.1.6-5.el5

php-mysql-5.1.6-5.1.6-5.el5

php-common-5.1.6-5.1.6-5.el5、php-pdo-5.1.6-5.el5

注:此处用源码包安装如下(也可用yum安装)

编译安装apache

[root@localhostLNS-SG4]# tar zxvf httpd-2.2.9.tar.gz �C C /usr/src

[[email protected]]# ./configure --prefix=/usr/local/apache2 --enable-so--enable-rewrite --enable-ssl --with-ssl=/usr/lib --enable-auth-digest--enable- cgi --enable-suexec --with-suexec-caller=daemon--with-suexec-docroot=/usr/local/apache2/htdocs

[[email protected]]# make && make install

查看相关服务

[[email protected]]# ls /usr/local

apache2  bin etc  games  include lib  libexec  sbin share  src

执行启动服务

[root@localhostbin]# ./apachectl start

安装mysql

[root@localhostLNS-SG5]# useradd -M -s /sbin/nologin mysql

[root@localhostLNS-SG5]# tar zxvf mysql-5.0.56.tar.gz -C /usr/src

[[email protected]]# ./configure --prefix=/usr/local/mysql

[[email protected]]# make & make install

[[email protected]]# cp support-files/my-medium.cnf /etc/my.cnf

[[email protected]]# chown -R root:mysql /usr/local/mysql

[[email protected]]# chown -R mysql /usr/local/mysql

[[email protected]]# /usr/local/mysql/bin/mysql_install_db --user=mysql

[[email protected]]# echo "/usr/local/mysql/lib/mysql" >>/etc/ld.so.conf

[[email protected]]# ldconfig

[[email protected]]# /usr/local/mysql/bin/mysqld_safe --user=mysql &

[1]13582

[[email protected]]# Starting mysqld daemon with databases from /usr/local/mysql/var

[[email protected]]# cp support-files/mysql.server /etc/init.d/mysqld

[[email protected]]# chmod +x /etc/init.d/mysqld

[[email protected]]# chkconfig -add mysqld

 

安装编译php

[root@localhostLNS-SG5]# tar jxvf php-5.2.6.tar.bz2 -C /usr/src

[[email protected]]# ./configure --prefix=/usr/local/php5--with-apxs2=/usr/local/apache2/bin/apxs--with-mysql=/usr/local/mysql --enable-sockets--enable-mbstring

[[email protected]]# make && make install

编辑文件vim/usr/local/apache2下的配置文件

AddTypeapplication/x-httpd-php .php

  DirectoryIndex index.html index.php

(此处也可以用rpm包安装相关的依赖包)

[root@localhostServer]# rpm -ivh perl-DBI-1.52-1.fc6.i386.rpm

[root@localhostServer]# rpm -ivh mysql-5.0.22-2.1.i386.rpm

[root@localhostServer]# rpm -ivh perl-DBD-MySQL-3.0007-1.fc6.i386.rpm

[root@localhostServer]# rpm -ivh mysql-server-5.0.22-2.1.i386.rpm

[root@localhostServer]# rpm -ivh unixODBC-2.2.11-7.1.i386.rpm

[root@localhostServer]# rpm -ivh libtool-ltdl-1.5.22-6.1.i386.rpm

[root@localhostServer]# rpm -ivh libdbi-0.8.1-2.1.i386.rpm

[root@localhostServer]# rpm -ivh libdbi-drivers-0.8.1a-1.2.2.i386.rpm

[root@localhostServer]# rpm -ivh libdbi-dbd-mysql-0.8.1a-1.2.2.i386.rpm

[root@localhostServer]#rpm-ivhmysql-connector-odbc-3.51.12-2.2.i386.rpm

[root@localhostServer]# rpm -ivh php-common-5.1.6-5.el5.i386.rpm

[root@localhostServer]# rpm -ivh php-cli-5.1.6-5.el5.i386.rpm

[root@localhostServer]# rpm -ivh php-5.1.6-5.el5.i386.rpm

[root@localhostServer]# rpm -ivh php-pdo-5.1.6-5.el5.i386.rpm

        启动已安装好的httpd、mysqld服务,设置为每次开机随系统自动运行

    [root@localhost Server]# chkconfig --level35 mysqld on

[root@localhostServer]# chkconfig --level 35 httpd on

6、安装net-snmp-utils软件包

[root@localhostServer]# rpm -ivh net-snmp-utils-5.3.1-14.el5.i386.rpm

warning:net-snmp-utils-5.3.1-14.el5.i386.rpm: Header V3 DSA signature: NOKEY, key ID37017186

Preparing...               ########################################### [100%]

   1:net-snmp-utils  

###########################################[100%]

   7、安装rrdtool软件包

      [root@localhost ~]# mount /dev/cdrom /mnt

mount:block device /dev/cdrom is write-protected, mounting read-only

[root@localhost~]# cd /mnt/Linux-gateway/LGS-SG6

[      root@localhost LGS-SG6]# tar zxvfrrdtool-1.2.27.tar.gz

      [root@localhost src]# cd rrdtool-1.2.27/

      [root@localhost rrdtool-1.2.27]#./configure --prefix=/usr/local

      [root@localhost rrdtool-1.2.27]# nake&& make install

  8、安装cacti文件包

 [root@localhost html]# cd /var/www/html

 [root@localhost html]# tar zxvf/mnt/Linux-gateway/LGS-SG6/cacti-0.8.7b-cn-utf8.tar.gz

[root@localhosthtml]# mv cacti-0.8.7b-cn-utf8 cacti

[root@localhosthtml]# useradd cactiuser

[root@localhosthtml]# chown -R cactiuser.cactiuser cacti/rra/ cacti/log/

9、设置监测数据库、表,设置好授权访问数据库的用户和密码

 

[root@localhosthtml]# mysql -u root -p

Enterpassword:

Welcometo the MySQL monitor.  Commands end with; or \g.

YourMySQL connection id is 2 to server version: 5.0.22

 

Type'help;' or '\h' for help. Type '\c' to clear the buffer.

 

mysql>create database cactidb default character set utf8;

QueryOK, 1 row affected (0.00 sec)

 

mysql>grant all on cactidb.* to cactiuser@localhost identified by 'pwd@123';

QueryOK, 0 rows affected (0.02 sec)

 

mysql>

[root@localhosthtml]# mysql -u cactiuser -p cactidb < cacti/cacti.sql

Enterpassword

10、调整cacti配置文件

[root@localhosthtml]# cd /var/www/html/cacti/

[root@localhostcacti]# vim include/config.php

$database_type= "mysql";

$database_default= "cactidb";

$database_hostname= "localhost";

$database_username= "cactiuser";

$database_password= "pwd@123";

$database_port= "3306";

$config['url_path']="/"

11、调整httpd设置并重新启动服务

DocumentRoot"/var/www/html/cacti"

<Directory"/var/www/html/cacti>

    Options FollowSymLinks

    AllowOverride None

</Directory>

<Directory"/var/www/html/cacti">

 Options None

 AllowOverride None

Orderallow,deny

Allowfrom all

</DirectoryOA>

DirectoryIndexindex.html index.php index.html.var//设置默认索引页

12、初始化cacti系统

wKioL1R20j-DlB43AAGZ1r2rgB0029.jpg

为了在监测图像中正常显示中文,还需要设置RRDtool所使用的中文字体路径。同样通过左侧栏中的“设置”链接,找到路径选项卡中的“RRDtool默认字体路径”将字体路径设置为“/usr/share/fonts/zh_CN/TureType/zysong.ttl”点击右下方的“保存”即可。

wKiom1R20dPxjdz6AAGRn8Wtcl4766.jpg wKioL1R20oygiFSQAAC-XxN-afE827.jpg

 

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整合cacti和nagios

整合cacti和nagios是利用了cacti的一个插件nagios for cacti,它的原理是将nagios的数据通过ndo2db导入到mysql数据库(cacti的库中),然后cacti读取数据库信息将nagios的结果展示出来

(1)、安装ndoutils

首先需要安装ndoutils以将nagios的数据能导入到mysql数据库中。

yum-y install mysql-devel    安装mysql开发包以编译ndoutils

前提:因为本次安装nagios用的是4.0的版本,所以要安装2.0以上的ndoutils不然会显示加载模块不成功

tar-zcvf ndoutils-2.0.0.tar.gz

cdndoutils-2.0.0

./configure--prefix=/usr/local/nagios/ --with-mysql-inc=/usr/include/mysql--with-mysql-lib=/usr/lib/mysql --enable-mysql --disable-pgsql--with-ndo2db-user=nagios --with-ndo2db-group=nagios

Make

makeinstall

cp-v {ndomod-4x.o,ndo2db-4x,file2sock,log2ndo} /usr/local/nagios/bin

./installdb-ucactiuser -ppwd@123 -d cactidb

cpndomod.cfg-sample /usr/local/nagios/etc/ndomod.cfg

修改nagios主配置文件
#vi /usr/local/nagios/etc/nagios.cfg

10、添加以下内容
check_external_commands=1

command_check_interval=-1

event_broker_options=-1

broker_module=/usr/local/nagios/bin/ndomod.oconfig_file=/usr/local/nagios/etc/ndomod.cfg

process_performance_data=1

添加的内容至此结束

11、修改配置文件ndocmd.cfg和ndo2db.cfg,这里我的配置文件内容为:
[root@localhost downloads]# cat /usr/local/nagios/etc/ndomod.cfg |grep -v'^#'|sed /^$/d

instance_name=default

output_type=tcpsocket

output=127.0.0.1

tcp_port=5668

output_buffer_items=5000

buffer_file=/usr/local/nagios/var/ndomod.tmp

file_rotation_interval=14400

file_rotation_timeout=60

reconnect_interval=15

reconnect_warning_interval=15

data_processing_options=-1

config_output_options=2

[root@localhostdownloads]# cat /usr/local/nagios/etc/ndo2db.cfg |grep -v '^#'|sed /^$/d

ndo2db_user=nagios

ndo2db_group=nagios

socket_type=tcp

socket_name=/usr/local/nagios/var/ndo.sock

tcp_port=5668

db_servertype=mysql

db_host=127.0.0.1

db_port=3306

db_name=cacti

db_prefix=npc_

db_user=cacti

db_pass=cacti2008

max_timedevents_age=1440

max_systemcommands_age=10080

max_servicechecks_age=10080

max_hostchecks_age=10080

max_eventhandlers_age=44640

debug_level=1

debug_verbosity=1

debug_file=/usr/local/nagios/var/ndo2db.debug

max_debug_file_size=1000000
12
、#/usr/local/nagios/bin/ndo2db-c /usr/local/nagios/etc/ndo2db.cfg    启动ndo2db

(2)、安装安装php-json  npc展示部分用到json,需要在php中安装php-json的支持

Yuminstall php-devel    否则,phpsize命令不好用

#wgethttp://www.aurore.net/projects/php-json/php-json-ext-1.2.0.tar.bz2

#tarxvjf  php-json-ext-1.2.0.tar.bz2

#cdphp-json-ext-1.2.0

#phpize            编译前初始化php环境

#./configure

#make

#makeinstall

#vi/etc/php.d/json.ini
extension=php_json.so

#cp/usr/lib/php/modules/json.so /usr/lib/php/modules/php_json.so  这一步骤很关键,因为,apache否则日志报错加载不到php_json.so文件。

#/usr/sbin/httpd-k graceful    重启apache

     

为了验证是否成功可使用phpinfo查看是否已支持json

(3)安装npc

wgethttp://www.assembla.com/spaces/npc/documents/aUjAwmdW8r3BuPab7jnrAJ/download?filename=npc-2.0.0b.166.tar.gz

wget   http://dlwt.csdn.net/fd.php?i=659714146741849&s=796b68562511c6534bfc15d7b04711f4/npc-2.0.3.tar.gz  新链接可用
#mv npc /usr/local/wwwroot/cacti/plugins/
启用cacti的插件功能,以admin用户登陆cacti,在console中的usermanagement里对admin的用户权限进行编辑,勾选上PluginManagement,然后到插件管理中心安装并启用NPC即可。

在'User Management'中选择'admin',在下边'Realm Permissions'中钩选'Plugin Management'。这时右侧会出现'Plugin Management'连接,进去后在'uninstalled'中安装npc,然后在'intalled'中enablenpc,然后在回去admin的'RealmPermissions'中会出现'use npc',如果没有钩选就把它选中。

 

接着在右侧栏目中选择settings,点选npc的标签

钩选Remote Commands

NagiosCommand File Path:     /usr/local/nagios/var/rw/nagiosNaNd

<这个文件启动nagios后会产生,根据实际的位置写>

NagiosURL:     [url]http://yourserver/nagios/[/url]

保存就可以了。

 

至此安装就完成了

启动mysql httpd ndo nagios

servicemysqld start

servicehttpd start

/usr/local/nagios/bin/ndo2db-c /usr/local/nagios/etc/ndo2db.cfg

servicenagios start

 

访问[url]http://yourserver/cacti/[/url]

(4)测试页面

在IE浏览器的地址栏输入:http://192.168.30.162/cacti

用户名:admin      密码:admin

第一次登录的时候,会提示修改管理员密码,按照提示修改即可。

查看npc是否显示

 

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(5)正常显示

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wKiom1R20vyhO9gkAAcTSYt7tFo062.jpg

报错解决

A、安装完成npc之后无法显示页面,最终找到解决办法是因为php的扩展不支持

解决如下

安装前准备
yum -y install php-devel php-pear gcc make

2.安装json
pear install pecl/json
或者
pecl install json

3.让php支持json
我的php是yum安装的,所以
cd /etc/php.d
echo "extension=json.so" > json.ini
重启apache
service httpd restart

如果有selinux,执行下面命令
chcon system_u:object_r:textrel_shlib_t /usr/lib/php/modules/json.so

chcon -c -v -R -u system_u -r object_r -t textrel_shlib_t/usr/lib/php/modules/json.so

4.验证
php -m|grep json
json
可以看到php已经支持json了,现在可以重新去执行了php页面了.

B、页面显示之后,可惜的是nagios显示off的状态,找各种办法,是ndoutils的版本问题,重新安装即可,至此可正常显示

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