CentOS/RHEL 5平台安装FAN nagios

一、FAN是一个基于centos的迷你版系统，可以直接下载iso镜像安装。它也可以安装在redhat平台上，FAN 2.1一般都是安装在redhat 5.x平台的32位系统上。

官网：http://www.fullyautomatednagios.org/download/

二、配置网络和dns

1.network

[root@oracle64 Desktop]# cat /etc/sysconfig/network-scripts/ifcfg-eth3 

2.dns

[root@oracle64 Desktop]# cat /etc/resolv.conf 

search localdomain

nameserver 210.21.4.130

nameserver 221.5.88.88

二、安装在32位的系统上很简单

1.安装 epel-release

[root@oracle64 Desktop]# rpm -Uvh http://dl.fedoraproject.org/pub/epel/5/i386/epel-release-5-4.noarch.rpm

2.安装 Graphviz repo :

[root@oracle64 Desktop]# cd /etc/yum.repos.d/

[root@oracle64 Desktop]# wget http://www.graphviz.org/graphviz-rhel.repo

3.安装 FAN repo :

[root@oracle64 Desktop]# wget http://www.fullyautomatednagios.org/FAN/repository/2.4/i386/fan-repo-2.4-fan.1.noarch.rpm

[root@oracle64 Desktop]# yum localinstall --nogpgcheck fan-repo-2.4-fan.1.noarch.rpm

4.64位系统不能这样安装，需要fan_nagios_x86_64.repo.tar.gz包(这个包是我自己新建了一个源),把该包直接解压缩到/etc/yum.repos.d/文件夹即可

三、安装 stable version 2.4

FAN standalone

[root@oracle64 Desktop]# yum install fan-standalone

FAN poller

[root@oracle64 Desktop]# yum install fan-poller

FAN central

[root@oracle64 Desktop]# yum install fan-central

FAN database

[root@oracle64 Desktop]# yum install fan-database

四、用PNP绘制历史曲线

1. Pnp是一个基于php和perl，用rrdtool将nagios采集的数据绘制图表的工具，所以安装pnp之前必须先安装php、perl和rrdtool。

2.安装需要的插件

yum -y install gcc-c++ 

yum -y install libxml2-devel

yum -y install pango*

3.安装cgilib

tar zxvf cgilib-0.5.tar.gz

cd cgilib-0.5

cp cgi.h /usr/include

4.安装rrdtool

tar zxvf rrdtool-1.4.5.tar.gz

cd rrdtool

./configure

make all

make install

5.编辑文件添加到最后面

vi /etc/httpd/conf/http.conf

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

<Directory "/usr/local/nagios/share/pnp">

     Options None

     AllowOverride None

     Order allow,deny

     Allow from all

     Authname "nagios access"

     Authuserfile /etc/nagios/htpasswd.users

     Require valid-user

     Authtype basic

</Directory>

这样安装就结束了，下面是我安装过程中出现的错误，以及解决办法

五、报错

1.网卡流量报错：Return code of 127 is out of bounds - plugin may be missing

/usr/lib/nagios/plugins/该文件夹下面缺少流量检查脚本，然后赋权

ll /usr/lib/nagios/plugins/check_traffic.sh

cd /usr/lib/nagios/plugins

chmod 777 -R plugins

chown -R nagios.nagios  plugins

2.vi /etc/httpd/conf/httpd.conf 

找到#ServerName www.example.com:80   把#去掉，再重启apache即可

Starting httpd: httpd: Could not reliably determine the server‘s fully qualified domain name, using 172.16.195.101 for ServerName

3.nagios告警全部关掉模块报错

Error: Could not stat() command file ‘/var/log/nagios/rw/nagios.cmd‘!

拷贝一个nagios.cmd文件到下面目录，然后赋权解决

chmod -R 777 /var/log/nagios/rw/

4.CHECK_NRPE: Error - Could not complete SSL handshake.

 vi /usr/local/nagios/etc/nrpe.cfg

添加nagios IP地址210.31.118.245 

然后重启nrpe

5.这些是只有210.31.118.245 机器ping不通，那就是防火墙过滤了，添加

PING CRITICAL - Packet loss = 100% 

/sbin/iptables -A INPUT -p icmp -s 210.31.118.245  -j ACCEPT

6.这些都是5666端口telnet不通的，也是防火墙屏蔽了

CHECK_NRPE: Socket timeout after 10 seconds.

CHECK_NRPE: Socket timeout after 10 seconds.

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