Rrdtool graph

RRDtool Graph examples

This seems to be the biggest PITA to deal with. There are simply too many options and they are VERY sensitive to n00bs.

This works (but looks like crap since I am learning)

rrdtool graph ${DEST}  --width 500 --height 100 --title "temp and humidity (2 hour resolution)" \
--font AXIS:8: \
--font LEGEND:8: \
--font UNIT:8: \
--x-grid MINUTE:30:HOUR:2:HOUR:2:0:"%I%p" \
           DEF:ds0=/opt/nmsApi/rrd/database.rrd:temperature:AVERAGE \
           DEF:ds0max=/opt/nmsApi/rrd/database.rrd:temperature:MAX \
           DEF:ds0min=/opt/nmsApi/rrd/database.rrd:temperature:MIN \
           DEF:ds1=/opt/nmsApi/rrd/database.rrd:humidity:AVERAGE \
           DEF:ds1max=/opt/nmsApi/rrd/database.rrd:humidity:MAX \
           DEF:ds1min=/opt/nmsApi/rrd/database.rrd:humidity:MIN \
           COMMENT:'BLAH                  ' COMMENT:' Last ' COMMENT:' Avg ' COMMENT:' Min ' COMMENT:' Max ' COMMENT:'\l' \
           LINE1.25:ds0#00cc00:'temperature ' GPRINT:ds0:LAST:%5.1lf%s GPRINT:ds0:AVERAGE:%5.1lf%s GPRINT:ds0min:MIN:%5.1lf%s GPRINT:ds0max:MAX:%5.1lf%s COMMENT:'\l' \
           LINE3.25:ds1#0000ff:'humidity ' GPRINT:ds1:LAST:%5.1lf%s GPRINT:ds1:AVERAGE:%5.1lf%s GPRINT:ds1min:MIN:%5.1lf%s GPRINT:ds1max:MAX:%5.1lf%s COMMENT:'\l'

Adding a line like a threshold value is done with the HRULE

• Value 50 will show up in the legend

HRULE:50#FF0000:"Value 50"