CentOS5.5X64安装配置Nagios监控

 

通过整合pnp4nagios,ndoutils,nconf提供了关于nagios的一套完整的配置方案
操作系统Centos5.5
目前nagios最新版本的nagios3.4.1
首先把编译环境准备好，我们这里把开发库先都装上
yum groupinstall "Development Libraries" "Development Tools" "Legacy Software Development"
 "X Software Development" -y
相关依赖包
yum -y install  mysql perl mysql-server perl-DBI perl-DBD-MySQL httpd gcc glibc glibc-common gd gd-devel ruby
ruby-devel2 ruby-devel mysql-devel libpng libpng-devel libjpeg libjpeg-devel zlib zlib-devel
yum默认安装的是5.1版本的php，但是pnp4nagios-0.6.6需要5.2以上版本的php，我们这里就装5.3的
yum search php 看看有没有php53相关的包，没有请配置好相关的源
yum install php53-*
准备如下软件包-rw-r--r-- 1 root root  1782817 Jul  9 08:45 nagios-3.4.1.tar.gz-rw-r--r-- 1 root root  2087089 Jul  9 14:36 nagios-plugins-1.4.16.tar.gz-rw-r--r-- 1 root root   491706 Jul  6 14:40 nconf-1.3.0-0.tgz-rw-r--r-- 1 root root  2135521 Jul  6 14:42 ndoutils-1.4b9.tar.gz-rw-r--r-- 1 root root   405725 Dec 14  2011 nrpe-2.12.tar.gz-rw-r--r-- 1 root root  2815857 Sep 15  2011 pnp4nagios-0.6.15.tar.gz-rw-r--r-- 1 root root  2135521 Jul  6 14:42 ndoutils1.4b9_light.patch
建立相关用户和组
useradd -m nagiosgroupadd nagcmdusermod -a -G nagcmd nagiosusermod -a -G apache nagios
安装nagios
tar zxvf nagios-3.4.1.tar.gz -C /usr/srccd /usr/src/nagios-3.4.1./configure  --prefix=/usr/local/nagios --with-command-group=nagcmd
--with-gd-lib=/usr/lib --with-gd-inc=/usr/include
make allmake installmake install-initmake install-commandmodemake install-configmake install-webconf
生成web管理界面用户和密码
htpasswd -c /usr/local/nagios/etc/htpasswd.users nagiosadmin  //登录nagios web界面时的
用户为nagiosadmin 下面输入的密码为此用户密码
chkconfig --add nagioschkconfig nagios onchkconfig httpd onchkconfig mysqld on
安装插件
tar zxvf nagios-plugins-1.4.16.tar.gz -C /usr/srccd /usr/src/nagios-plugins-1.4.16./configure --prefix=/usr/local/nagios --with-nagios-user=nagios --with-nagios-group=nagiosmakemake install
service nagios startservice httpd startservice mysqld start
使用http://localhost/nagios/来访问
点开service会看到本机的httpd服务有个告警，并提示HTTP WARNING: HTTP/1.1 403 Forbidden - 5240 bytes in 0.002
second response time
修改下面的配置文件即可消除错误
vim /usr/local/nagios/etc/objects/localhost.cfg
define service{use local-service ; Name of service template to usehost_name localhostservice_description HTTPcheck_command check_httpnotifications_enabled 1    #######此处改为1
define service{use local-service ; Name of service template to usehost_name localhostservice_description SSHcheck_command check_sshnotifications_enabled 1    ########此处改为1}
提示HTTP WARNING: HTTP/1.1 403 Forbidden - 5240 bytes in 0.002 second response time是因为在目前网站根目录下面没
有首页文件，可自己建立一个index.html的文件放在/var/www/html/下面，如果是源码安装的请放在定义的网站根下面。
重启Nagios和httpd服务刷新页面即可
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pnp4nagios的安装和配置，能够把nagios捕获到的数据绘制成图片
安装前准备
yum install rrdtool-perl rrdtool-devel rrdtool
tar zxvf pnp4nagios-0.6.15.tar.gz -C /usr/srccd /usr/src/pnp4nagios-0.6.15./configure --with-nagios-user=nagios --with-nagios-group=nagcmdmake allmake installmake install-webconfmake install-configmake isntall-initmake fullinstall
pnp4nagios官方提供了三种配置方法，我这里选取一种vi /usr/local/nagios/etc/nagios.cfg
process_performance_data=1  //此处修改为1
添加如下行
## service performance data#service_perfdata_file=/usr/local/pnp4nagios/var/service-perfdataservice_perfdata_file_template=DATATYPE::SERVICEPERFDATA\tTIMET::$TIMET$\tHOSTNAME::$HOSTNAME$\tSERVICEDESC::
$SERVICEDESC$\tSERVICEPERFDATA::$SERVICEPERFDATA$\tSERVICECHECKCOMMAND::$SERVICECHECKCOMMAND$\tHOSTSTATE::
$HOSTSTATE$\tHOSTSTATETYPE::$HOSTSTATETYPE$\tSERVICESTATE::$SERVICESTATE$\tSERVICESTATETYPE::$SERVICESTATETYPE$service_perfdata_file_mode=aservice_perfdata_file_processing_interval=15service_perfdata_file_processing_command=process-service-perfdata-file ## host performance data starting with Nagios 3.0#host_perfdata_file=/usr/local/pnp4nagios/var/host-perfdatahost_perfdata_file_template=DATATYPE::HOSTPERFDATA\tTIMET::$TIMET$\tHOSTNAME::$HOSTNAME$\tHOSTPERFDATA::
$HOSTPERFDATA$\tHOSTCHECKCOMMAND::$HOSTCHECKCOMMAND$\tHOSTSTATE::$HOSTSTATE$\tHOSTSTATETYPE::$HOSTSTATETYPE$host_perfdata_file_mode=ahost_perfdata_file_processing_interval=15host_perfdata_file_processing_command=process-host-perfdata-file
vi /usr/local/nagios/etc/objects/commands.cfg 修改最后两行为
define command{       command_name    process-service-perfdata-file       command_line    /usr/local/pnp4nagios/libexec/process_perfdata.pl --
bulk=/usr/local/pnp4nagios/var/service-perfdata}define command{       command_name    process-host-perfdata-file       command_line    /usr/local/pnp4nagios/libexec/process_perfdata.pl --bulk=/usr/local/pnp4nagios/var/host-
perfdata}cd /usr/local/pnp4nagios/sharemv install.php install.php.bak
访问测试 http://localhost/pnp4nagios
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让nagios显示小太阳图标在pnp4nagios的源码包下面执行
cp contrib/ssi/* /usr/local/nagios/share/ssi/
然后在服务或者主机定义里面添加action_url
#vi /usr/local/nagios/etc/objects/templates.cfg
define host{        use                     linux-server                   host_name               localhost        alias                   localhost        address                 127.0.0.1        action_url              /pnp4nagios/index.php/graph?host=$HOSTNAME$&srv=_HOST_' class='tips'
rel='/pnp4nagios/index.php/popup?host=$HOSTNAME$&srv=_HOST_                       //添加此行        }
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%        action_url                      /pnp4nagios/index.php/graph?host=$HOSTNAME$&srv=$SERVICEDESC$'
class='tips' rel='/pnp4nagios/index.php/popup?host=$HOSTNAME$&srv=$SERVICEDESC$       //添加此行        }
此时在web界面的ping旁边会显示一个小的图标，把鼠标放上去会放大
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安装nconf实现nagios的图形化配置，可以直接在web界面操作，不用去编辑配置文件
tar zxvf nconf-1.3.0-0.tgz -C /var/www/html/chown -R apache.apache /var/www/html/nconf/
为nconf创建数据库，默认Mysql安装后没有密码，后面要用到密码，这里提前设置一个密码
mysqladmin -u root password "p@ssw0rd"
mysql -u root -p
create database nconf;
grant all privileges on nconf.* to 'nconf'@localhost identified by 'nconf' with grant option;
cp /usr/local/nagios/bin/nagios /var/www/html/nconf/bin
chown apache.nagios /var/www/html/nconf/bin/nagios
然后通过浏览器访问: http://localhost/nconf
按照提示安装，并输入上面创建的数据库和用户及密码
根据提示进行安装 然后删除/var/www/html/nconf/下面的 INSTALL/  INSTALL.php  UPDATE/  UPDATE.php重新刷新页面就可以
使用了！
如果用WEB配置时提示mysql、nconf错误时，可手工设置/var/www/html/nconf/config下的mysql.php与nconf.php文件
把mysql.php里的相应相应项做更改，如：
define('DBHOST', "localhost");  define('DBNAME', "nconf");define('DBUSER', "nconf");define('DBPASS', "nconf");

nconf.php文件：
define('NCONFDIR',     "/var/www/html/nconf");
define('NAGIOS_BIN',   "/var/www/html/nconf/bin/nagios");

如要做Nconf认证，使用file认证类型 //web配置时如果使用认证才可以配置，那么先按照如下配置再进行
修改/var/www/html/nconf/config/authentication.php如下：
define('AUTH_ENABLED', '1');

此时默认帐号是admin，密码nconf，具体可见/var/www/html/nconf/include/login_check.php
及/var/www/html/nconf/./index.php
帐号密码保存在/var/www/html/nconf/config/.file_accounts.php文件中，帐号密码格式如下
#username::password::authorization(user|admin)::[user's full name (optional)]::admin::nconf::admin::Administrator::
然后再打开http://localhost/nconf，此时跟前面的会不一样，全部下一步就好，最好提示删除INSTALL/ INSTALL.php UPDATE/
UPDATE.php，照做就行
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安装配置ndoutils把nagios的数据导入mysql数据库mysql -u root -pmysql>CREATE DATABASE nagios;mysql>GRANT ALL ON nagios.* TO 'nagios'@localhost IDENTIFIED BY ‘nagios’     #授权nagios用户，密码为 nagiosmysql>FLUSH PRIVILEGES;
wget http://prdownloads.sourceforge.net/sourceforge/nagios/ndoutils-1.4b9.tar.gzwget http://svn.centreon.com/trunk/ndoutils-patch/ndoutils1.4b9_light.patch
tar zxvf ndoutils-1.4b9.tar.gz /usr/srccd /usr/src/ndoutils-1.4b9
把补丁包放在/usr/src/ndoutils-1.4b9目录下面
patch -p1 -N < ndoutils1.4b9_light.patch提示补丁成功打上
./configure --prefix=/usr/local/nagios/ --enable-mysql --disable-pgsql --with-ndo2db-user=nagios --with-ndo2db-
group=nagiosmakecd db/./installdb -u root -p 数据库密码 -d nagios
mysql -u root -p
mysql>USE nagios;mysql>SHOW TABLES; //查看验证表已经生成
cd ndoutils-1.4b9
 cp ./src/ndomod-3x.o /usr/local/nagios/bin/ndomod.o cp ./src/ndo2db-3x /usr/local/nagios/bin/ndo2db cp ./config/ndo2db.cfg-sample /usr/local/nagios/etc/ndo2db.cfg cp ./config/ndomod.cfg-sample /usr/local/nagios/etc/ndomod.cfg chmod 774 /usr/local/nagios/bin/ndo* chown nagios:nagios /usr/local/nagios/bin/ndo* chown nagios:nagios /usr/local/nagios/etc/ndo*vi ndo2db.cfgdb_name=nagiosdb_user=nagios //修改为nagiosdb_pass=nagios //修改为nagios
vi /usr/local/nagios/etc/nagios.cfg
添加以下行
broker_module=/usr/local/nagios/bin/ndomod.o config_file=/usr/local/nagios/etc/ndomod.cfg
cp ./daemon-init /etc/init.d/ndo2dbchmod +x /etc/init.d/ndo2dbchkconfig --add ndo2dbservice nagios restart
如果启动失败使用命令检查，看看是什么地方出错，并修正
/usr/local/nagios/bin/nagios -v /usr/local/nagios/etc/nagios.cfg
service ndo2db start
tail -f /usr/local/nagios/var/nagios.log
[root@test ndoutils-1.4b9]# cat /usr/local/nagios/var/nagios.log                            [1345086976] Nagios 3.4.1 starting... (PID=22899)[1345086976] Local time is Thu Aug 16 11:16:16 CST 2012[1345086976] LOG VERSION: 2.0[1345086976] Finished daemonizing... (New PID=22900)[1345088085] Finished daemonizing... (New PID=27417)[1345088175] SERVICE ALERT: localhost;HTTP;OK;HARD;4;HTTP OK: HTTP/1.1 200 OK - 302 bytes in 0.001 second
response time[1345089958] Caught SIGTERM, shutting down...[1345089958] Successfully shutdown... (PID=27417)[1345089958] Nagios 3.4.1 starting... (PID=8993)[1345089958] Local time is Thu Aug 16 12:05:58 CST 2012[1345090128] LOG VERSION: 2.0[1345090128] ndomod: NDOMOD-MERETHIS 1.4b9-merethis (10-27-2009) Copyright (c) 2009 Nagios Core Development Team
and Community Contributors[1345090128] ndomod: Successfully connected to data sink.  0 queued items to flush.[1345090128] Event broker module '/usr/local/nagios/bin/ndomod.o' initialized successfully.  //初始化成功[1345090128] Finished daemonizing... (New PID=9360)
二、php session权限问题
访问pnp4nagios时有
An error was detected which prevented the loading of this page. If this problem persists, please contact the
website administrator.
/usr/local/pnp4nagios/lib/kohana/system/libraries/Session.php [160]:
session_start(): open(/var/lib/php/sess_d1suf0cpph46v95efp1b7l0cbtt0q7nr, O_RDWR) failed: Permission denied (13)
错误
检查 /var/lib/php5目录的权限，发现原来是root才可以读写，而apache采用了nagios的用户来运行，所以php的session数据没
有权限写入，于是更改/var/lib/php的写入权限chown -R nagios.nagios /var/lib/php       或chown -R 777 /var/lib/php

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