Bug? Cacti 0.8.8c Area Graph Not Working

[DJHiP]

Not sure if I'm in the right spot for a potential bug or script issue, mods move it if I'm not

Have an issue adding an area plot to a graph with two data sources.

The first Area Plot draws correctly, The second Area Plot seems to keep drawing the first datasource, even though its been changed.

So This Template:


Produces This Graph:


With Debug of the graph being:

Code: Select all

RRDTool Command:

/usr/bin/rrdtool graph - \
--imgformat=PNG \
--start='-86400' \
--end='-300' \
--title='bdr3 - Traffic - "ath0" 00:27:22:10:30:' \
--rigid \
--base='1000' \
--height='120' \
--width='500' \
--alt-autoscale \
--vertical-label='Bytes per second' \
--slope-mode \
--font TITLE:10: \
--font AXIS:6: \
--font LEGEND:7: \
--font UNIT:6: \
DEF:a='/var/www/html/cacti/rra/bdr3_-_if_traffic_in_41.rrd':'traffic_in':AVERAGE \
DEF:b='/var/www/html/cacti/rra/bdr3_-_if_traffic_in_41.rrd':'traffic_out':AVERAGE \
LINE1:a#00CF00FF:'Inbound'  \
GPRINT:a:LAST:' Current\:%8.2lf%s'  \
GPRINT:a:AVERAGE:'Average\:%8.2lf%s'  \
GPRINT:a:MAX:'Maximum\:%8.2lf%s'  \
AREA:a#00CF0019:''  \
COMMENT:'Total In \: 26.6 GB\n'  \
LINE1:b#002A97FF:'Outbound'  \
GPRINT:a:LAST:'Current\:%8.2lf%s'  \
GPRINT:b:AVERAGE:'Average\:%8.2lf%s'  \
GPRINT:b:MAX:'Maximum\:%8.2lf%s'  \
AREA:a#002A9719:''  \
COMMENT:'Total Out\: 26.6 GB\n' 

RRDTool Says:

OK

If you look in the last part of the debug, the two AREA lines are using the same data source 'a', even though they are defined as different data sources in the template..

Let me know if I'm missing something obvious, but when I change either of the AREA lines in the template they both still stay as 'a'.

[BSOD2600]

If you look at the Items associated to each Data Source in [Graph Item Inputs] (right under graph template items), do they match up for the traffic in/out?

[DJHiP]

Hey BSOD2600,

Yeah they do, here are the screenshots

[BSOD2600]

Odd.

What if you moved the AREA items above the GPRINT items for both in/out?

[DJHiP]

Simply moving them up so they are like this:

GraphTemplateAboveGprint.PNG (24.58 KiB) Viewed 2270 times

Gives this result in RRDTool Debug (You don't really need the picture of the graph, you can see it's still calling 'a' for both Area's)

Code: Select all

RRDTool Command:

/usr/bin/rrdtool graph - \
--imgformat=PNG \
--start='-86400' \
--end='-300' \
--title='bdr3.gspv.wan - IF - Traffic - "ath0" 00:27:22:10:30:' \
--rigid \
--base='1000' \
--height='120' \
--width='500' \
--alt-autoscale \
--vertical-label='Bytes per second' \
--slope-mode \
--font TITLE:10: \
--font AXIS:6: \
--font LEGEND:7: \
--font UNIT:6: \
DEF:a='/var/www/html/cacti/rra/bdr3_gspv_wan_-_if_traffic_in_41.rrd':'traffic_in':AVERAGE \
DEF:b='/var/www/html/cacti/rra/bdr3_gspv_wan_-_if_traffic_in_41.rrd':'traffic_out':AVERAGE \
AREA:a#00CF0019:''  \
LINE1:a#00CF00FF:'Inbound'  \
GPRINT:a:LAST:' Current\:%8.2lf%s'  \
GPRINT:a:AVERAGE:'Average\:%8.2lf%s'  \
GPRINT:a:MAX:'Maximum\:%8.2lf%s'  \
COMMENT:'Total In \: 41.1 GB\n'  \
AREA:a#002A9719:''  \
LINE1:b#002A97FF:'Outbound'  \
GPRINT:a:LAST:'Current\:%8.2lf%s'  \
GPRINT:b:AVERAGE:'Average\:%8.2lf%s'  \
GPRINT:b:MAX:'Maximum\:%8.2lf%s'  \
COMMENT:'Total Out\: 41.1 GB\n' 

RRDTool Says:

OK

I've even tried putting the AREA lines at the very top, you still get

Code: Select all

DEF:a='/var/www/html/cacti/rra/bdr3_gspv_wan_-_if_traffic_in_41.rrd':'traffic_in':AVERAGE \
DEF:b='/var/www/html/cacti/rra/bdr3_gspv_wan_-_if_traffic_in_41.rrd':'traffic_out':AVERAGE \
AREA:a#00CF0019:''  \
AREA:a#002A9719:''  \
LINE1:a#00CF00FF:'Inbound'  \
GPRINT:a:LAST:' Current\:%8.2lf%s'  \
GPRINT:a:AVERAGE:'Average\:%8.2lf%s'  \
GPRINT:a:MAX:'Maximum\:%8.2lf%s'  \
COMMENT:'Total In \: 41.1 GB\n'  \
LINE1:b#002A97FF:'Outbound'  \
GPRINT:a:LAST:'Current\:%8.2lf%s'  \
GPRINT:b:AVERAGE:'Average\:%8.2lf%s'  \
GPRINT:b:MAX:'Maximum\:%8.2lf%s'  \
COMMENT:'Total Out\: 41.1 GB\n' 

The other thing I noticed is the second part of that code, the first GPRINT is also calling 'a' even though its mapped for the second data source...

[DJHiP]

I've just run the same setup through cacti 0.8.8a and got the same result.

Interestingly the gprint values are swapped compared to mine, but both area plots end up on 'a' just like 0.8.8c

GraphTemplate88a.PNG (27.55 KiB) Viewed 2263 times

Code: Select all

RRDTool Command:

/usr/bin/rrdtool graph - \
--imgformat=PNG \
--start=-86400 \
--end=-300 \
--title='bdr3 - Traffic' \
--rigid \
--base=1000 \
--height=120 \
--width=500 \
--alt-autoscale \
--vertical-label='Bytes per second' \
--slope-mode \
--font TITLE:12: \
--font AXIS:6: \
--font LEGEND:6: \
--font UNIT:6: \
DEF:a="/var/lib/cacti/rra/bdr3_traffic_in_5037.rrd":'traffic_out':AVERAGE \
DEF:b="/var/lib/cacti/rra/bdr3_traffic_in_5037.rrd":'traffic_in':AVERAGE \
LINE1:a#00CF00FF:"Inbound"  \
GPRINT:b:LAST:" Current\:%8.2lf%s"  \
GPRINT:b:AVERAGE:"Average\:%8.2lf%s"  \
GPRINT:a:MAX:"Maximum\:%8.2lf%s"  \
AREA:a#00CF0019:""  \
COMMENT:"Total In\: 83.28 GB\n"  \
LINE1:b#002A97FF:"Outbound"  \
GPRINT:a:LAST:"Current\:%8.2lf%s"  \
GPRINT:a:AVERAGE:"Average\:%8.2lf%s"  \
GPRINT:a:MAX:"Maximum\:%8.2lf%s"  \
COMMENT:"Total Out\: 2.24 GB"  \
AREA:a#002A9719:"" 

RRDTool Says:

OK

I'm trying to get my head around how it could be this template, but I keep coming back to the fact cacti shouldn't really care what's there, it should send it all to rrdtool and if its incorrect, rrdtool just won't display..

[BSOD2600]

Does the unaltered [bytes/sec, total bandwidth] graph show the correct data? For my 0.8.8c install, it does. If you then make a copy of that template and then add those 2 AREA items, does it break again?

[DJHiP]

As far as I'm aware the data is correct (It looks very similar to a second cacti instance I have running) So I'll assuming the polling and database data is fine, it's simply the front end.

So I duplicated the template, set the original back to how it was and it displays correctly for the original (Line for TX, Area for RX).

GraphTemplate(1).PNG (27.29 KiB) Viewed 2252 times

So I then duplicated the graph in question and went to change its template across to the new one and got this:

GraphPreviewConversion.PNG (34.43 KiB) Viewed 2252 times

Notice Item #5 says Out, when it should be In, Item #11 has no task at all, and it wants to add #11 and #12 as the new items, even though #5 and #11 are the new items.

This is the graph debug of that template, which is even more interesting, EVERYTHING has moved to datasource 'a' now!

Code: Select all

RRDTool Command:

/usr/bin/rrdtool graph - \
--imgformat=PNG \
--start='-86400' \
--end='-300' \
--title='bdr4 Traffic (1)' \
--rigid \
--base='1000' \
--height='120' \
--width='500' \
--alt-autoscale-max \
--lower-limit='0' \
--vertical-label='Bytes per second' \
--slope-mode \
--font TITLE:10: \
--font AXIS:6: \
--font LEGEND:7: \
--font UNIT:6: \
DEF:a='/var/www/html/cacti/rra/bdr4_traffic_in_24.rrd':'traffic_out':AVERAGE \
LINE1:a#00CF00FF:'Inbound'  \
GPRINT:a:LAST:' Current\:%8.2lf %s'  \
GPRINT:a:AVERAGE:'Average\:%8.2lf %s'  \
GPRINT:a:MAX:'Maximum\:%8.2lf %s'  \
AREA:a#00CF0019:''  \
COMMENT:'Total In \: 1.67 MB\n'  \
LINE1:a#002A97FF:'Outbound'  \
GPRINT:a:LAST:'Current\:%8.2lf %s'  \
GPRINT:a:AVERAGE:'Average\:%8.2lf %s'  \
GPRINT:a:MAX:'Maximum\:%8.2lf %s'  \
AREA:a#002A9719:''  \
COMMENT:'Total Out\: 1.67 MB\n' 

RRDTool Says:

OK

So I guess what I'm now going to have try is to build the template from nothing at all, possibly there is some stuck code in this template? (Not that I can see how that could happen, cacti somewhat sanitises the template when you import?)

[BSOD2600]

Seems like a nice bug you've found with repro Please report it http://www.cacti.net/bugs.php

[DJHiP]

Bug Submitted... http://bugs.cacti.net/view.php?id=2535

Thanks for your persistence BSOD2600