nagios插件pnp安装
1、安装rrdtool
# tar zxvf rrdtool-1.4.5.tar.gz && cd rrdtool-1.4.5 && ./configure --prefix=/usr/local/rrdtool && make && make install
2、安装pnp
tar zxvf pnp-0.4.13.tar.gz && cd pnp-0.4.13 && ./configure --with-nagios-user=nagios --with-nagios-group=nagios --with-rrdtool=/usr/local/rrdtool/bin/rrdtool --with-perfdata-dir=/usr/local/nagios/share/perfdata && make all && make install && make install-config && make install-init
安装完成，PNP默认文件放置情况如下：
General Options:
----------------------------- -------------------
Nagios user/group: nagios nagios
Install directory: /usr/local/nagios
HTML Dir: /usr/local/nagios/share/pnp
Config Dir: /usr/local/nagios/etc/pnp
Path to rrdtool: /usr/local/bin/rrdtool (Version 1.4.5)
RRDs Perl Modules: *** NOT FOUND ***
RRD Files stored in: /usr/local/nagios/share/perfdata
process_perfdata.pl Logfile: /usr/local/nagios/var/perfdata.log
Perfdata files (NPCD) stored in: /usr/local/nagios/var/spool/perfdata/
ps:RRDs Perl Modules: *** NOT FOUND ***
在这里我遇到一个很奇怪的问题，由于没有安装rrds perl模块，导致pnp出图的数据是乱码，附上图片：
后来通过yum install rrdtool-perl就恢复正常了，有图有真相
3、配置PNP，创建默认配置文件
# cd /usr/local/nagios/etc/pnp/
# cp process_perfdata.cfg-sample process_perfdata.cfg
# cp npcd.cfg-sample npcd.cfg
# cp rra.cfg-sample rra.cfg
# chown -R nagios:nagios /usr/local/nagios/etc/pnp
修改process_perfdata.cfg文件
vim /usr/local/nagios/etc/pnp/process_perfdata.cfg
LOG_FILE = /usr/local/nagios/var/perfdata.log
#
# Loglevel 0=silent 1=normal 2=debug
#
LOG_LEVEL = 2
这里将日志级别改为2，即debug模式。
4、修改Nagios配置文件
1、增加小太阳图标
修改templates.cfg，增加一个定义PNP的host和service。修改后的内容如下：
define host {
name host-pnp
register 0
#action_url /nagios/index.php/graph?host=$HOSTNAME$&srv=_HOST_' class='tips' rel='/nagios/index.php/popup?host=$HOSTNAME$&srv=_HOST_
action_url /nagios/pnp/index.php?host=$HOSTNAME$
process_perf_data 1
}
ps：我这里只添加了主机的小太阳图标，每当添加某主机的服务的时候，都会自动生成该服务的数据文件
2、修改commands.cfg，定义host-perfdata
define command{
command_name process-host-perfdata
command_line /usr/local/nagios/libexec/process_perfdata.pl
}
3、让主机引用host-perfdata
root># cat hosts.cfg
define host{
use host-pnp
host_name xx
alias xx(x)
address xx
contact_groups shyygroup
check_command check-host-alive
max_check_attempts 5
notification_interval 10
notification_period 24x7
notification_options d,u,r
}
4、重启nagios服务后，在这个目录下会产生2个主机的目录
ls /usr/local/nagios/share/perfdata/
xxjshyy xxysix
cd xxjshyy
-rw-rw-r-- 1 nagios nagioscmd 1151496 Dec 21 16:13 Current_Load.rrd
-rw-rw-r-- 1 nagios nagioscmd 12165 Dec 21 16:13 Current_Load.xml
-rw-rw-r-- 1 nagios nagioscmd 384952 Dec 21 16:11 Java_9800.rrd
-rw-rw-r-- 1 nagios nagioscmd 11208 Dec 21 16:11 Java_9800.xml
-rw-rw-r-- 1 nagios nagioscmd 384952 Dec 21 16:12 Java_9801.rrd
-rw-rw-r-- 1 nagios nagioscmd 11208 Dec 21 16:12 Java_9801.xml
-rw-rw-r-- 1 nagios nagioscmd 384952 Dec 18 17:35 mysql_3306.rrd
-rw-rw-r-- 1 nagios nagioscmd 384952 Dec 21 16:11 Mysql_3306.rrd
-rw-rw-r-- 1 nagios nagioscmd 11199 Dec 18 17:35 mysql_3306.xml
-rw-rw-r-- 1 nagios nagioscmd 11202 Dec 21 16:11 Mysql_3306.xml
-rw-rw-r-- 1 nagios nagioscmd 384952 Dec 21 16:12 Nrpe_5666.rrd
-rw-rw-r-- 1 nagios nagioscmd 11198 Dec 21 16:12 Nrpe_5666.xml
-rw-rw-r-- 1 nagios nagioscmd 768224 Dec 21 16:14 Ping.rrd
-rw-rw-r-- 1 nagios nagioscmd 11702 Dec 21 16:14 Ping.xml
-rw-rw-r-- 1 nagios nagioscmd 384952 Dec 21 16:14 sda3.rrd
-rw-rw-r-- 1 nagios nagioscmd 11170 Dec 21 16:14 sda3.xml
-rw-rw-r-- 1 nagios nagioscmd 1534768 Dec 21 16:13 traffic.rrd
-rw-rw-r-- 1 nagios nagioscmd 12701 Dec 21 16:13 traffic.xml
-rw-rw-r-- 1 nagios nagioscmd 384952 Dec 21 16:12 Users.rrd
-rw-rw-r-- 1 nagios nagioscmd 11120 Dec 21 16:12 Users.xml
ps:点击小太阳也能会报以下这种错误：
Deprecated: Assigning the return value of new by reference is deprecated in /usr/local/nagios/share/pnp/include/function.inc.php on line 1026
Warning: date() [function.date]: It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'Asia/Chongqing' for 'CST/8.0/no DST' instead in /usr/local/nagios/share/pnp/include/function.inc.php on line 557
Warning: date() [function.date]: It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'Asia/Chongqing' for 'CST/8.0/no DST' instead in /usr/local/nagios/share/pnp/include/function.inc.php on line 559
Warning: date() [function.date]: It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'Asia/Chongqing' for 'CST/8.0/no DST' instead in /usr/local/nagios/share/pnp/include/function.inc.php on line 563
Warning: date() [function.date]: It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'Asia/Chongqing' for 'CST/8.0/no DST' instead in /usr/local/nagios/share/pnp/include/function.inc.php on line 565
Deprecated: Function eregi() is deprecated in /usr/local/nagios/share/pnp/include/function.inc.php on line 1502
解决：
这是因为pnp-0.4.14对PHP 5.3.0的支持还不是很好，其中有几个bug需要修改：
根据错误提示打开
vi /usr/local/nagios/share/pnp/include/function.inc.php
找到行1541修改为
if($level == 2 && $type == "complete" && preg_match("/^NAGIOS_/",$tag)){
还会有两处错误需要修改，根据提示找到对应行进行修改：
line 556: 添加：date_default_timezone_set('UTC');
line 1032：修改为$pdf = new PDF('P', 'mm', 'A4'); 删除&
再重新重启nagios，应该就能看到图表了
