nagios 对服务或主机监控的是一个瞬时状态,有时候管理员需要了解主机一段时间内的性能及服务的响应状态,并且形成图表,这时就会用到pnp。 pnp是基于php和perl的,pnp可以利用rrdtool工具将nagios采集的数据绘制成相关的图表,然后显示主机或者服务在一段时间内的运行状况。 如果要安装pnp,需要安装如下环境: 1)整合后的apache和php环境,需支持GD、zlib、jpeg 2)安装rrdtool工具 3)安装perl 1.安装PNP 首先安装rrdtool-1.4.5.tar.gz ./configure --prefix=/usr/local/rrdtool make make install 接着安装pnp-0.4.13.tar.gz ./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 2.配置PNP (1)创建默认配置文件 cd /usr/local/nagios/etc/pnp cp npcd.cfg-sample npcd.cfg cp process_perfdata.cfg-sample process_perfdata.cfg cp rra.cfg-sample rra.cfg chown -R nagios.nagios /usr/local/nagios/etc/pnp (2)修改process_perfdata.cfg文件 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 3.修改nagios配置文件 (1)修改nagios.cfg pnp是通过调用nagios的数据来生成图表的,所以需要开启nagios的数据输出功能 process_performance_data=1 ###开启数据输出功能 host_perfdata_command=process-host-perfdata service_perfdata_command=process-service-perfdata (2)修改commands.cfg process-host-perfdata和process-service-perfdata指令声明了nagios输出哪些值到输出文件,pnp定义了一个perl脚本process_perfdata.pl,可以将指令中对应的执行命令替换成此脚本 # 'process-host-perfdata' command definition define command{ command_name process-host-perfdata command_line /usr/local/nagios/libexec/process_perfdata.pl } # 'process-service-perfdata' command definition define command{ command_name process-service-perfdata command_line /usr/local/nagios/libexec/process_perfdata.pl } (3)修改hosts.cfg和services.cfg文件 在hosts.cfg文件中增加以下代码: define host { name hosts-pnp register 0 action_url /nagios/pnp/index.php?host=$HOSTNAME$ process_perf_data 1 } 并给每个主机增加一句: use hosts-pnp 意思是将hosts-pnp引用 在services.cfg文件中增加以下代码: define service { name services-pnp register 0 action_url /nagios/pnp/index.php?host=$HOSTNAME$&srv=$SERVICEDESC$ process_perf_data 1 } 并给每个服务增加一句: use services-pnp 意思是将services-pnp引用 4.测试pnp功能 重启nagios /etc/init.d/nagios restart 在目录/usr/local/nagios/share/perfdata下会生成以主机名命名的文件夹 访问主页,在每个主机后面会有一个小太阳图标,点击进行就能看见图表了 5.报错修改 (1)点击小太阳也能会报以下这种错误: 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 Deprecated: Function eregi() is deprecated in /usr/local/nagios/share/pnp/include/function.inc.php on line 1541 Deprecated: Function eregi() is deprecated in /usr/local/nagios/share/pnp/include/function.inc.php on line 1541 Deprecated: Function eregi() is deprecated in /usr/local/nagios/share/pnp/include/function.inc.php on line 1541 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附近修改为 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 1033: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 (2) 安装rrdtool时会报错 configure: error: Please fix the library issues listed above and try again. 需要安装rpm包: cairo-1.2.4-5.el5.i386.rpm cairo-devel-1.2.4-5.el5.i386.rpm pango-1.14.9-6.el5.centos.i386.rpm pango-devel-1.14.9-6.el5.centos.i386.rpm 终于搞定搞定,中间安装的时候还报了很多次错误,大部分都是你的包没有装完全,只要按照错误提示把相应的包安装好就OK了,先确认是否有以下rpm包: rpm -qa |grep zlib zlib-1.1.4-8 zlib-devel-1.1.4-8 rpm -qa |grep libpng libpng-1.2.10-7.1.el5_3.2 libpng-devel-1.2.10-7.1.el5_3.2 rpm -qa |grep freetype freetype-2.2.1-21.el5_3 freetype-devel-2.2.1-21.el5_3 rpm -qa |grep libart_lgpl libart_lgpl-devel-2.3.17-4 libart_lgpl-2.3.17-4