nagios 安装篇

Nagios 安装

1.       下载源软件    

 

主要文件：

nagios-3.0.4.tar.gz

nagios-plugins-1.4.13.tar.gz

httpd-2.0.63.tar.gz

参考网站文档：

http://blog.chinaunix.net/u/28387/article_63200.html

http://blog.chinaunix.net/u/28387/article_63200.html

官方：

2.       nagios 服务器端安装

（1）       操作系统环境：

redhat AS5 64bit update5 kernel:2.6.9.55

 

(2) 安装步骤
[root@wxserver2 nagios-3.0.4]# useradd  nagios

[root@wxserver2 nagios-3.0.4]# mkdir /usr/local/nagios

[root@wxserver2 nagios-3.0.4]# chown nagios.nagios /usr/local/nagios

 

tar zxvf  nagios-3.0.4.tar.gz

cd nagios-3.0.4

./configure –prefix=/usr/local/nagios

make all

make install

make install-config

make install-config

ls /usr/local/nagios

   /usr/bin/htpasswd -c /usr/local/nagios/etc/htpasswd.users nagios

New password:

Re-type new password:

Adding password for user nagios

 

将nagios的信息加到apache中，打开/etc/httpd/conf/httpd.conf文件，在文件最后添加如下代码：

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

Options ExecCGI

AllowOverride None

Order allow,deny

Allow from all

AuthName "Nagios Access"

AuthType Basic

AuthUserFile /usr/local/nagios/etc/htpasswd.users

Require valid-user

Alias /nagios /usr/local/nagios/share

Options None

AllowOverride None

Order allow,deny

Allow from all

AuthName "Nagios Access"

AuthType Basic

AuthUserFile /usr/local/nagios/etc/htpasswd.users

Require valid-user

 

至此，nagios的WEB配置部分完成。继续

 

安装插件：

tar nagios-plugins-1.4.13

cd nagios-plugins-1.4.13

./configure –prefix=/usr/local/nagios       ###此步是指您的nagios的安装目录。

make;make install

 

检查一下：

ls /usr/local/nagios/libexec

测试：

./check_icmp -H   

OK - rta 33.632ms, lost 0%|rta=33.632ms;200.000;500.000;0; pl=0%;40;80;;

至此，插件安装完成，下面要修改配置文件：

由于我用的是3系列的版本，和网上田老师和loesprite.cublog.cn作者介绍的都是版本2的，不太一样，主要就是配置文件的目录有一点点区别，其他的配置都一样。

1．  Nagios.cfg 文件，这是nagios的主要配置文件：

我修改以下内容：

cfg_file=/usr/local/nagios/etc/objects/windows.cfg    #将此行启用，前面的注释符号去掉。因为我要监控的服务器都是WINDOWS平台的。

 

check_external_commands=0为check_external_commands=1 .这行的作用是允许在web界面下执行重启nagios、停止主机/服务检查等操作。版本3的，默认选项即可。

把command_check_interval的值从默认的1改成command_check_interval=10s（根据自己的情况定这个命令检查时间间隔，不要太长也不要太短）。为了测试需要，时间短些可以看到效果，要不等报警的邮件等的时间太长了。

2．  Cgi.cfg文件：

authorized_for_system_information=nagiosadmin,nagios

authorized_for_configuration_information=nagiosadmin,nagios

authorized_for_system_commands=nagios  //多个用户之间用逗号隔开

authorized_for_all_services=nagiosadmin,nagios

authorized_for_all_hosts=nagiosadmin,nagios

authorized_for_all_service_commands=nagiosadmin,nagios

authorized_for_all_host_commands=nagiosadmin,nagios

 

##nagios 这个用户是之前用/usr/local/apache/bin/htpasswd –c /usr/local/nagios/etc/htpasswd nagios 所生成的，这个要注意，不能随便加没有存在的验证用户，为了安全起见，不要添加过多的验证用户

 

 

 

[root@wxserver2 objects]# /usr/local/nagios/bin/nagios -v /usr/local/nagios/etc/nagios.cfg

 

Nagios 3.0.4

Copyright (c) 1999-2008 Ethan Galstad ()

Last Modified: 10-15-2008

License: GPL

 

Reading configuration data...

 

Error in configuration file '/usr/local/nagios/etc/nagios.cfg' - Line 551 (NULL value)

 

***> One or more problems was encountered while processing the config files...

 

     Check your configuration file(s) to ensure that they contain valid

     directives and data defintions.  If you are upgrading from a previous

     version of Nagios, you should be aware that some variables/definitions

     may have been removed or modified in this version.  Make sure to read

     the HTML documentation regarding the config files, as well as the

     'Whats New' section to find out what has changed.

 

[root@wxserver2 objects]# vi ../nagios.cfg   #注意掉551行time_change_threshold=

 

[root@wxserver2 objects]# /usr/local/nagios/bin/nagios -v /usr/local/nagios/etc/nagios.cfg

 

Nagios 3.0.4

Copyright (c) 1999-2008 Ethan Galstad ()

Last Modified: 10-15-2008

License: GPL

 

Reading configuration data...

 

Running pre-flight check on configuration data...

 

Checking services...

        Checked 15 services.

Checking hosts...

        Checked 2 hosts.

Checking host groups...

        Checked 2 host groups.

Checking service groups...

        Checked 0 service groups.

Checking contacts...

        Checked 1 contacts.

Checking contact groups...

        Checked 1 contact groups.

Checking service escalations...

        Checked 0 service escalations.

Checking service dependencies...

        Checked 0 service dependencies.

Checking host escalations...

        Checked 0 host escalations.

Checking host dependencies...

        Checked 0 host dependencies.

Checking commands...

        Checked 24 commands.

Checking time periods...

        Checked 5 time periods.

Checking for circular paths between hosts...

Checking for circular host and service dependencies...

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

 

[root@wxserver2 objects]# /usr/local/nagios/bin/nagios -d /usr/local/nagios/etc/nagios.cfg

启动发现，启动异常

查看share/nagios.log 文件，发现错误如下：

[1224570550] Error: Could not create external command file '/usr/local/nagios/var/rw/nagios.cmd' as named pipe: (2) -> No such file or directory.  If this file already exists and you are sure that another copy of Nagios is not running, you should delete this file.

[1224570550] Bailing out due to errors encountered while trying to initialize the external command file... (PID=20619)

mkdir /usr/local/nagios/var/rw

chown nagios.nagios rw

 

 

[1224570746] Error: Cannot open main configuration file '/usr/local/nagios/var/d' for reading!

 

Mkdir .usr/local/nagios/var/d

Chown nagios.nagios d

 

至此，nagios 可以暂时简陋的启动，可以看一下他的运行情况及状态。其他的进一步去设置:

需要过几分钟才能看到相关的状态信息。

 

此服务器做的别用处，SENDMAIL我早就关掉了。现在不能正常启动，发送邮件的情况可能看不到了。