分类： LINUX
2010-02-19 22:05:27
nagios本身并不把系统的性能数据用图形的方式表现出来，它不像cacti，mrtg那么直观，但是实际中是对图形表示有需求的，所以两个办法，一个是你搭建个cacti来，或者在nagios里面集成一个图形界面
帮助nagios做图的第三方插件有很多，我这里使用的是nagiosgraph这个插件，下面我们看看怎么使用这个插件来画图
首先去 下载我们的软件包 nagiosgraph-0.9.0.tgz
#tar zxvf nagiosgraph-0.9.0.tgz
# cd nagiosgraph-0.9.0
#mkdir /usr/local/nagios/nagiosgraph 在nagios的安装目录先建立一个文件夹nagiosgraph放置nagiosgraph的相关文件
#cp nagiosgraph/* /usr/local/nagios/nagiosgraph/ 将nagiosgraph的配置文件以及脚本copy进来
#vim /usr/local/nagios/nagiosgraph/nagiosgraph.conf 配置文件修改相应的字段
# File: $Id: nagiosgraph.conf,v 1.13 2007/02/15 13:09:48 vanidoso Stab $
# Author: (c) Soren Dossing, 2005
# License: OSI Artistic License
#
# Debug levels
# 0 = None
# 1 = Critical
# 2 = Error
# 3 = Warn
# 4 = Info
# 5 = Debug
debug = 52 这个字段是定义日志的debug级别的，建议设置高点刚开始，以后再设置回去
# Location of debug log file
logfile = /var/log/nagiosgraph.log 这个字段是nagiosgraph的脚本运行日志，手动建立并设置权限，直接设置成777省的麻烦
# Directory to store rrd database files
rrddir = /usr/local/nagios/nagiosgraph/rrd 这个字段是nagiosgraph插件生成的性能图示文件，也要注意权限问题
# File containing regular expressions to identify service and perf data
mapfile = /usr/local/nagios/nagiosgraph/map 这个其实类似个模板文件用来从perfdata日志中匹配关键的性能数据，采集数据使用
# Color scheme for graphs. Choose a number between 1 and 8.
colorscheme = 1
# Heartbeat. In seconds, twice the size of servicecheck intervals
heartbeat = 600
# Location of performance data log file. Comment out it not used.
perflog = /usr/local/nagios/nagiosgraph/perfdata.log 这个是性能日志文件，很重要，注意权限，脚本从这里读取性能数据
# Stylesheet - added to head of show.cgi. Comment out if not used
stylesheet = /usr/local/nagios/nagiosgraph/nagiosgraph.css 这个就不说了 ，注意路径跟权限
# RRAs resolution (optional, don't touch if you don't know what you are doing)
#resolution = 17280 17520 32850 1095
# Organization of rrd files
# _ = single character separator for all files in same dir
# subdir = files in subdirectory structure with "___" separator
dbseparator = subdir
# Plot form (LINE1..LINE3, AREA, TICK)
plotas = LINE2
# Graphs to show in every page (day, week, month, quarter, year)
# time = day week month year
然后我们需要nagios知道nagiosgraph的存在，所以需要配置nagios.cfg来调用nagios来作图。
修改nagios.cfg添加如下字段
service_perfdata_file=/usr/local/nagios/nagiosgraph/perfdata.log
service_perfdata_file_template=$LASTSERVICECHECK$||$HOSTNAME$||$SERVICEDESC$||$SERVICEOUTPUT$||$SERVICEPERFDATA$
service_perfdata_file_mode=a
service_perfdata_file_processing_interval=30
service_perfdata_file_processing_command=process-service-perfdata
并且将
process_performance_data=1 这个字段设置为1 设置为0表示不向perdata.log写性能采集数据
采集的数据图
