一、安装环境

1.Centos6.8

2.关闭iptables防火墙

二、安装nagios服务器端：

1.rpm -Uvh http://dl.fedoraproject.org/pub/epel/6/x86_64/epel-release-6-8.noarch.rpm

2.yum -y install nagios nagios-plugins-all nagios-plugins-nrpe nrpe PHP

3.chkconfig httpd on && chkconfig nagios on

4.service httpd start && service nagios start

5. 设置nagiosadmin密码： htpasswd -c /etc/nagios/htpasswd.users nagiosadmin

6. 登陆：http://{your_ip_address}/nagios输入密码

三、安装pnp4nagios：

1.yum install pnp4nagios rrdtool

四、配置pnp4nagios：

1.修改nagios.cfg

[root@localhostobjects]#vim/etc/nagios/nagios.cfg//修改以下内容
process_performance_data=1//由0改为1
host_perfdata_command=process-host-perfdata//前面的注释拿掉
service_perfdata_command=process-service-perfdata//注释拿掉
enable_environment_macros=1//如果有注释拿掉

2，修改commands.cfg

注释掉原有对process-host-perfdata和process-service-perfdata，重新定义

vim /etc/nagios/objects/commands.cfg

define command{
command_name process-host-perfdata
command_line /usr/libexec/pnp4nagios/process_perfdata.pl-dHOSTPERFDATA
}

define command{
command_name process-service-perfdata
command_line /usr/libexec/pnp4nagios/process_perfdata.pl
}

3.修改配置文件templates.cfg

vim /etc/nagios/objects/templates.cfg

define host{
name hosts-pnp
register 0
action_url /pnp4nagios/index.PHP/graph?host=$HOSTNAME$&srv=_HOST_
process_perf_data
}

define service{
name srv-pnp
register 0
action_url /pnp4nagios/index.PHP/graph?host=$HOSTNAME$&srv=$SERVICEDESC$
process_perf_data
}

4，修改服务器配置文件localhost.cfg

vim /etc/nagios/objects/localhost.cfg

define host{
use linux-server,hosts-pnp #添加红色字体
host_name localhost
alias localhost
address 127.0.0.1
}

define service{
use local-service,0);">srv-pnp #添加红色字体
host_name localhost
service_description PING
check_command check_ping!100.0,20%!500.0,60%
}

5，重启nagios，启动npcd

/etc/init.d/npcdrestart

/etc/init.d/nagiosrestart

六。 配置调试命令

/usr/sbin/nagios -v /etc/nagios/nagios.cfg

[root@bogon ~]# /usr/sbin/nagios -v /etc/nagios/nagios.cfg

Nagios Core 3.5.1
Copyright (c) 2009-2011 Nagios Core Development Team and Community Contributors
Copyright (c) 1999-2009 Ethan Galstad
Last Modified: 08-30-2013
License: GPL

Website: http://www.nagios.org
Reading configuration data...
Read main config file okay...
Processing object config file '/etc/nagios/objects/commands.cfg'...
Processing object config file '/etc/nagios/objects/contacts.cfg'...
Processing object config file '/etc/nagios/objects/timeperiods.cfg'...
Processing object config file '/etc/nagios/objects/templates.cfg'...
Processing object config file '/etc/nagios/objects/localhost.cfg'...
Processing object config file '/etc/nagios/objects/switch.cfg'...
Processing object config directory '/etc/nagios/conf.d'...
Read object config files okay...

Running pre-flight check on configuration data...

Checking services...
Checked 16 services.
Checking hosts...
Checked 3 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 25 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

七、问题总结

1.安装过程很顺利，但是在配置完成后，重启nagios服务时出现报错，大概意思就是配置文件错误，请检查配置文件（Invalid object definition type ' host' in file '/etc/nagios/objects/template）。使用/usr/sbin/nagios -v /etc/nagios/nagios.cfg命令检查，发现templates.cfg文件配置错误，后来一直检查也没发现问题，最后发现问题出在字体格式上面，因为我是直接从网页上复制黏贴的，服务器可能无法识别字体或者特殊符号（手动敲一遍，问题解决。。。汗）

2.nagios重启完成后，登录网页，可以看到如下图所示，点击网络表格的图表，没有弹出页面图表，报错信息如下："/var/lib/pnp4nagios/localhost" for host "localhost" does not exist，将commands.cfg更改为上面的内容后，重启nagios恢复正常（我出错之前的配置并不是这样的），重启完要等一会才能看到图的。

3.将服务迁移到生产机器时（之前是在测试机上进行测试的），发现配置完成后，打开网页，点击图标图标时，弹出的页面提示：The requested URL /pnp4nagios/index.PHP/graph was not found on this server.提示页面无法找到。

解决方法：打开vim /etc/httpd/conf.d/pnp4nagios.conf，将里面的代码完全拷贝，打开vim /etc/httpd/conf/httpd.conf，将拷贝的代码粘贴到文件的最下方，然后重启nagios和apache服务。

[root@m ~]# service nagios restart

[root@m ~]# service httpd restart

文章转载自：http://www.cnblogs.com/derekchen/p/3783105.html转载请注明出处。

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