离开这个问题:Print time of recording for LAST value
似乎可以让rrdtool计算rrd中最后一次更新的时间戳。如何在命令中使用它作为" end"时间?
即。我想做这样的事情:
rrdtool graph img.png -a PNG -s e-600 -e LASTUPDATETIME -v "CPU Usage" \
--title "CPU Utilization" DEF:ds0a=node.rrd:ds0:AVERAGE \
DEF:ds1a=node.rrd:ds1:AVERAGE AREA:ds0a#35b73d:"User" \
LINE1:ds1a#0400ff:"System"
我尝试了解DEF,CDEF和VDEF的事情无济于事:
rrdtool graph img.png -a PNG -v "CPU Usage" --title "CPU Utilization" \
DEF:data=node.rrd:x:AVERAGE CDEF:count=data,UN,UNKN,COUNT,IF \
VDEF:last=count,MAXIMUM \
DEF:ds0a=node.rrd:ds0:AVERAGE:start=end-600:end=last \
DEF:ds1a=node.rrd:ds1:AVERAGE:start=end-600:end=last \
AREA:ds0a#35b73d:"User" LINE1:ds1a#0400ff:"System"
这导致:
ERROR: end time: unparsable time: last
有什么想法吗?
答案 0 :(得分:2)
,你可以做
rrdtool graph img.png -a PNG -s e-600 -e `date +%s node.rrd` -v "CPU Usage" \
--title "CPU Utilization" DEF:ds0a=node.rrd:ds0:AVERAGE \
DEF:ds1a=node.rrd:ds1:AVERAGE AREA:ds0a#35b73d:User \
LINE1:ds1a#0400ff:System