一、安裝
centos或者redhat默認的yum包中是不包括rrdtool的
cd /etc/yum.repos.d/
vim dag.repo
[dag] name=Dag RPM Repository for Red Hat Enterprise Linux baseurl=http://apt.sw.be/redhat/el5/en/$basearch/dag gpgcheck=0 gpgkey=http://dag.wieers.com/rpm/packages/RPM-GPG-KEY.dag.txt enabled=1
yum install rrdtool
which rrdtool #可以看一下安裝的運行目錄
這樣就安裝完成了
二、使用rrdtool工具創建圖形
先創建一個常用變量的配置文件
vim rrd.conf
#!/bin/bash RRDTOOL='/usr/bin/rrdtool' FILE='/var/www/rrdtool/rrdtool.rrd' #存儲文件 HOST='192.168.0.1' OUTPUT='/var/www/rrdtool/rrdtool.png' #存儲圖片
創建生產rrd文件腳本
vim createrrd.sh
#!/bin/bash . rrd.conf $RRDTOOL create $FILE -s 60 \ #每60秒一個點 DS:ping:GAUGE:120:0:65535 \ #120：表示到120秒的時候傳進來的點有效，65535：表示這個點的最大值 RRA:AVERAGE:0.5:1:2880 #1表示不壓縮點，總共2880個點 RRA:AVERAGE:0.5:5:2880 #5表示5個點進行壓縮，比如上面設置1分鐘一個點，這裏5就表示5分鐘一個點
執行了這個腳本後，就會生成rrdtool.rrd文件，這個就是圖形點的數據
vim updaterrd.sh #寫數據進rrd文件
#!/bin/bash
. rrd.conf
UPDATECMD=$(ping -c 3 -w 6 $HOST | grep rtt | awk -F "/" '{ print $5 }' )
$RRDTOOL update $FILE N:$UPDATECMD #測試數據
上面的語句執行後，就在rrd中生成數據了，可以通過以下命令來查看
rrdtool fetch rrdtool.rrd AVERAGE
創建生成圖形的腳本
vim createimg.sh
#!/bin/bash
. rrd.conf
$RRDTOOL graph $OUTPUT \
-t "WAN Ping" -v "Time in ms" \
--start="now-1d" \
--end="now" \
--height="120" \
--width="440" \
-c "BACK#000000" \
-c "SHADEA#000000" \
-c "SHADEB#000000" \
-c "FONT#DDDDDD" \
-c "CANVAS#202020" \
-c "GRID#666666" \
-c "MGRID#AAAAAA" \
-c "FRAME#202020" \
-c "ARROW#FFFFFF" \
"DEF:ping_time=$FILE:ping:AVERAGE" \
"CDEF:shading2=ping_time,0.98,*" "AREA:shading2#F90000:$HOST" \
"GPRINT:ping_time:LAST:Last\: %5.2lf ms" \
"GPRINT:ping_time:MIN:Min\: %5.2lf ms" \
"GPRINT:ping_time:MAX:Max\: %5.2lf ms" \
"GPRINT:ping_time:AVERAGE:Avg\: %5.2lf ms" \
"CDEF:shading10=ping_time,0.90,*" "AREA:shading10#E10000" \
"CDEF:shading15=ping_time,0.85,*" "AREA:shading15#D20000" \
"CDEF:shading20=ping_time,0.80,*" "AREA:shading20#C30000" \
"CDEF:shading25=ping_time,0.75,*" "AREA:shading25#B40000" \
"CDEF:shading30=ping_time,0.70,*" "AREA:shading30#A50000" \
"CDEF:shading35=ping_time,0.65,*" "AREA:shading35#960000" \
"CDEF:shading40=ping_time,0.60,*" "AREA:shading40#870000" \
"CDEF:shading45=ping_time,0.55,*" "AREA:shading45#780000" \
"CDEF:shading50=ping_time,0.50,*" "AREA:shading50#690000" \
"CDEF:shading55=ping_time,0.45,*" "AREA:shading55#5A0000" \
"CDEF:shading60=ping_time,0.40,*" "AREA:shading60#4B0000" \
"CDEF:shading65=ping_time,0.35,*" "AREA:shading65#3C0000" \
"CDEF:shading70=ping_time,0.30,*" "AREA:shading70#2D0000" \
"CDEF:shading75=ping_time,0.25,*" "AREA:shading75#180000" \
"CDEF:shading80=ping_time,0.20,*" "AREA:shading80#0F0000" \
"CDEF:shading85=ping_time,0.15,*" "AREA:shading85#000000" >/dev/null
創建一個html頁面
vim rrdtool.html
<html> <body> <img src="rrdtool/rrdtool.png" /> <body> </html>
OK，到這裏就完成了整個rrdtool的簡單創建過程。
設置環境變量export LANG=en_US.UTF-8 #可以解決編輯html文件輸入中文問題