rrdtool create rmbrate.rrd \ -s 300 \ -b `date +%s` \ DS:rmbrate:GAUGE:600:U:U \ RRA:AVERAGE:0.5:1:603 \ RRA:AVERAGE:0.5:6:603 \ RRA:AVERAGE:0.5:24:603 \ RRA:AVERAGE:0.5:228:800 \ RRA:MAX:0.5:1:603 \ RRA:MAX:0.5:6:603 \ RRA:MAX:0.5:24:603 \ RRA:MAX:0.5:288:603 2. 通过Yahoo提供的汇率查询解决取得当前汇率,并存入rrd文件。 #!/bin/bash PATH='/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin:/usr/local/sbin' timestamp=`date +%s` rrdfile='/home/sandbox/rmb/rmbrate.rrd' rmbrate=`curl 'http://download.finance.yahoo.com/d/quotes.csv?s=USDCNY=X&f=sl1d1t1&e=.csv' 2>/dev/null | awk -F, '{print $2}'` rrdtool update $rrdfile ${timestamp}:${rmbrate} 3. 加一个crond对汇率做5分钟记录。 */5 * * * * /home/sandbox/rmb/rmb.sh &>/dev/null 4. 使用php脚本展示人民币汇率rrd图。 <?php header("Content-type:image/png"); $cmd=' /usr/bin/rrdtool graph - \ -h 120 -w 500 \ --start now-1d \ -v "RMB/USD" --title "RMB-USD Rate" \ DEF:rmbrate=/home/sandbox/rmb/rmbrate.rrd:rmbrate:MAX AREA:rmbrate#00CF00FF:"RMB Rate" \ GPRINT:rmbrate:LAST:"Current\:%lf %s" \ GPRINT:rmbrate:AVERAGE:"Average\:%lf %s" \ GPRINT:rmbrate:MAX:"Max\:%lf %s" \ COMMENT:"\n" '; passthru($cmd); ?>最后展示的效果 转载请保留固定链接: https://linuxeye.com/Linux/2152.html |