[HOWTO] Color coded percent utilization

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#16 Post by gandalf » Fri Oct 21, 2005 10:04 pm

Please have a look at the rrdtool graph statements (select the wrench ...). If it occurs to be the same strange thing as above (2 lines containing a backslash only), then the answer is: yes. There's a solution (I've posted a bug report and appended a patch, see http://bugs.cacti.net/view.php?id=585).
Reinhard

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#17 Post by TheWitness » Sat Oct 22, 2005 11:32 am

lvm, and others monitoring this post, please try the attached rrd.php and let me know if it fixes the problem...

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#18 Post by Allen K » Sun Oct 23, 2005 12:53 am

TheWitness - I have applied the file you posted, but I am getting the same results in my graphs.

/usr/local/bin/rrdtool graph - \
--imgformat=PNG \
--start=-86400 \
--end=-300 \
--title="Circuit Utilization - Summary - FastEthernet0/1" \
--base=1000 \
--height=120 \
--width=500 \
--alt-autoscale-max \
--lower-limit=0 \
--vertical-label="Percent" \
--slope-mode \
DEF:a="/usr/local/www/*********/webfiles/rra/pgabcr1_20ws2950_traffic_in_1590.rrd":traffic_in:LAST \
DEF:b="/usr/local/www/*********/webfiles/rra/pgabcr1_20ws2950_traffic_in_1590.rrd":traffic_out:LAST \
CDEF:cdefa=a,100000000,/,100,*,8,* \
CDEF:cdefb=b,100000000,/,100,*,8,* \
CDEF:cdefc=a,b,+,100000000,/,100,*,8,*,10,LE,a,b,+,100000000,/,100,*,8,*,0,GT,NEGINF,UNKN,IF,UNKN,IF \
CDEF:cdefd=a,b,+,100000000,/,100,*,8,*,30,LE,a,b,+,100000000,/,100,*,8,*,20,GT,NEGINF,UNKN,IF,UNKN,IF \
CDEF:cdefe=a,b,+,100000000,/,100,*,8,*,50,LE,a,b,+,100000000,/,100,*,8,*,40,GT,NEGINF,UNKN,IF,UNKN,IF \
CDEF:cdeff=a,b,+,100000000,/,100,*,8,*,70,LE,a,b,+,100000000,/,100,*,8,*,60,GT,NEGINF,UNKN,IF,UNKN,IF \
CDEF:cdefg=a,b,+,100000000,/,100,*,8,*,90,LE,a,b,+,100000000,/,100,*,8,*,80,GT,NEGINF,UNKN,IF,UNKN,IF \
CDEF:cdefh=a,b,+,100000000,/,100,*,8,*,20,LE,a,b,+,100000000,/,100,*,8,*,10,GT,NEGINF,UNKN,IF,UNKN,IF \
CDEF:cdefi=a,b,+,100000000,/,100,*,8,*,40,LE,a,b,+,100000000,/,100,*,8,*,30,GT,NEGINF,UNKN,IF,UNKN,IF \
CDEF:cdefj=a,b,+,100000000,/,100,*,8,*,60,LE,a,b,+,100000000,/,100,*,8,*,50,GT,NEGINF,UNKN,IF,UNKN,IF \
CDEF:cdefba=a,b,+,100000000,/,100,*,8,*,80,LE,a,b,+,100000000,/,100,*,8,*,70,GT,NEGINF,UNKN,IF,UNKN,IF \
CDEF:cdefbb=a,b,+,100000000,/,100,*,8,*,5000,LE,a,b,+,100000000,/,100,*,8,*,90,GT,NEGINF,UNKN,IF,UNKN,IF \
CDEF:cdefbe=a,8,* \
CDEF:cdefce=b,8,* \
\
\
:cdefc#3ACE0C:" 0 - 10%":STACK \
:cdefd#99FF99:"20 - 30%":STACK \
:cdefe#ffff00:"40 - 50%":STACK \
:cdeff#FF8C1A:"60 - 70%":STACK \
:cdefg#FF3333:"80 - 90%\n":STACK \
:cdefh#00FF00:"10 - 20%":STACK \
:cdefi#FFFF80:"30 - 40%":STACK \
:cdefj#FFA54C:"50 - 60%":STACK \
:cdefba#FF5F00:"70 - 80%":STACK \
:cdefbb#FF0000:"90 - 100%\n":STACK \
COMMENT:"CIRCUIT SPEED\: 100000000 bits per second\n" \
COMMENT:"INBOUND TRAFFIC RATE" \
GPRINT:cdefbe:AVERAGE:" Avg\:%8.2lf %s" \
GPRINT:cdefbe:MIN:"Min\:%8.2lf %s" \
GPRINT:cdefbe:MAX:"Max\:%8.2lf %s" \
GPRINT:cdefbe:LAST:"Current\:%8.2lf %s\n" \
COMMENT:"INBOUND TRAFFIC %" \
GPRINT:cdefa:AVERAGE:" Avg\:(%5.2lf %%)" \
GPRINT:cdefa:MIN:"Min\:(%5.2lf %%)" \
GPRINT:cdefa:MAX:"Max\:(%5.2lf %%)" \
GPRINT:cdefa:LAST:"Current\:(%5.2lf %%)\n" \
COMMENT:"OUTBOUND TRAFFIC RATE" \
GPRINT:cdefce:AVERAGE:"Avg\:%8.2lf %s" \
GPRINT:cdefce:MIN:"Min\:%8.2lf %s" \
GPRINT:cdefce:MAX:"Max\:%8.2lf %s" \
GPRINT:cdefce:LAST:"Current\:%8.2lf %s\n" \
COMMENT:"OUTBOUND TRAFFIC %" \
GPRINT:cdefb:AVERAGE:" Avg\:(%5.2lf %%)" \
GPRINT:cdefb:MIN:"Min\:(%5.2lf %%)" \
GPRINT:cdefb:MAX:"Max\:(%5.2lf %%)" \
GPRINT:cdefb:LAST:"Current\:(%5.2lf %%)\n" \
COMMENT:"TOTAL DATA MOVED" \
COMMENT:" Inbound\: 0 bytes" \
COMMENT:"Outbound\: 0 bytes"
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#19 Post by gandalf » Sun Oct 23, 2005 4:31 am

I confirm the results above, not working for me (cacti 0.8.6g with patches). Still same two lines with backslash only (see my bug report).
Reinhard

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#20 Post by TheWitness » Sun Oct 23, 2005 7:08 am

You will still see the 2 new lines when you display the graph syntax, however, the rrdtool_execute function should be removing them. In addition, all RRDNL's are removed from the file prior to calling rrdtool in the rrdtool_ececute function.

Therefore, I am concerned that this is not the issue.

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#21 Post by TheWitness » Sun Oct 23, 2005 7:11 am

Allen K,

I see a syntax error. I will have to research.

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#22 Post by TheWitness » Sun Oct 23, 2005 7:16 am

Ok, here is the issue. The following:
\
\
:cdefc#3ACE0C:" 0 - 10%":STACK \
:cdefd#99FF99:"20 - 30%":STACK \
:cdefe#ffff00:"40 - 50%":STACK \
:cdeff#FF8C1A:"60 - 70%":STACK \
:cdefg#FF3333:"80 - 90%\n":STACK \
:cdefh#00FF00:"10 - 20%":STACK \
:cdefi#FFFF80:"30 - 40%":STACK \
:cdefj#FFA54C:"50 - 60%":STACK \
:cdefba#FF5F00:"70 - 80%":STACK \
:cdefbb#FF0000:"90 - 100%\n":STACK \
Is not a valid syntax for RRDTool 1.2.x. It should be more like:
AREA????? \
AREA????? \
AREA:cdefc#3ACE0C:" 0 - 10%":STACK \
AREA:cdefd#99FF99:"20 - 30%":STACK \
AREA:cdefe#ffff00:"40 - 50%":STACK \
AREA:cdeff#FF8C1A:"60 - 70%":STACK \
AREA:cdefg#FF3333:"80 - 90%\n":STACK \
AREA:cdefh#00FF00:"10 - 20%":STACK \
AREA:cdefi#FFFF80:"30 - 40%":STACK \
AREA:cdefj#FFA54C:"50 - 60%":STACK \
AREA:cdefba#FF5F00:"70 - 80%":STACK \
AREA:cdefbb#FF0000:"90 - 100%\n":STACK \
So, what we have here is either a damaged template or something else whacky in addition to a potentially buggy lib/rrd.php function.

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#23 Post by gandalf » Sun Oct 23, 2005 7:58 am

TheWitness,

well, but it's not only the backslash item. Sorry for leading you into the wrong direction, but please have a look at those weird AREA: :STACK statements
Allen K wrote: CDEF:cdefbe=a,8,* \
CDEF:cdefce=b,8,* \
\
\
:cdefc#3ACE0C:" 0 - 10%":STACK \
:cdefd#99FF99:"20 - 30%":STACK \
You see, AREA is missing ...
Reinhard

[edit]
Sorry, did not see TheWitness' last post. So we do agree about the AREA. If AREA/LINE are allowed with color=NONE, you will get that item. If you'd like to have a look at my bug report; I suppose it would be a little mod of some if-statement in the graphing function of rrd.php to get rid of this ...
[/edit]

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#24 Post by TheWitness » Sun Oct 23, 2005 12:43 pm

I have left an e-mail for roman to resolve the application of the patch. There is quite a bit of work being performed to rrd.php at the moment.

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#25 Post by SRY » Tue Oct 25, 2005 4:12 am

The graph that I posted earlier in this thread is displayed using rrdtool 1.0.x on my server but I do have an Area command at the start of my line. I believe that the Area or Line is prefix by the Associated Graph Item under the Graph Item Inputs in the Graph Templates.

For completeness I have included a copy of the graph properties for the graph that I posted earlier.

/usr/bin/rrdtool graph - \
--imgformat=GIF \
--start=-86400 \
--end=-300 \
--title="Internet Router - Circuit Utilisation - ATM1/0.1-aal5 l" \
--base=1000 \
--height=240 \
--width=500 \
--alt-autoscale-max \
--lower-limit=-100 \
--vertical-label="Outbound (bits/sec) Inbound" \
DEF:a="/www/htdocs/cacti/rra/internet_router_2_traffic_out_1871.rrd":traffic_in:LAST \
DEF:b="/www/htdocs/cacti/rra/internet_router_2_traffic_out_1871.rrd":traffic_out:LAST \
CDEF:cdefa=a,8,* \
CDEF:cdefc=a,6900000,/,100,*,8,*,10,LE,a,6900000,/,100,*,8,*,0,GT,a,8,*,UNKN,IF,UNKN,IF \
CDEF:cdefd=a,6900000,/,100,*,8,*,20,LE,a,6900000,/,100,*,8,*,10,GT,a,8,*,UNKN,IF,UNKN,IF \
CDEF:cdefe=a,6900000,/,100,*,8,*,30,LE,a,6900000,/,100,*,8,*,20,GT,a,8,*,UNKN,IF,UNKN,IF \
CDEF:cdeff=a,6900000,/,100,*,8,*,40,LE,a,6900000,/,100,*,8,*,30,GT,a,8,*,UNKN,IF,UNKN,IF \
CDEF:cdefg=a,6900000,/,100,*,8,*,50,LE,a,6900000,/,100,*,8,*,40,GT,a,8,*,UNKN,IF,UNKN,IF \
CDEF:cdefh=a,6900000,/,100,*,8,*,60,LE,a,6900000,/,100,*,8,*,50,GT,a,8,*,UNKN,IF,UNKN,IF \
CDEF:cdefi=a,6900000,/,100,*,8,*,70,LE,a,6900000,/,100,*,8,*,60,GT,a,8,*,UNKN,IF,UNKN,IF \
CDEF:cdefj=a,6900000,/,100,*,8,*,80,LE,a,6900000,/,100,*,8,*,70,GT,a,8,*,UNKN,IF,UNKN,IF \
CDEF:cdefba=a,6900000,/,100,*,8,*,90,LE,a,6900000,/,100,*,8,*,80,GT,a,8,*,UNKN,IF,UNKN,IF \
CDEF:cdefbb=a,6900000,/,100,*,8,*,5000,LE,a,6900000,/,100,*,8,*,90,GT,a,8,*,UNKN,IF,UNKN,IF \
CDEF:cdefbc=b,8,*,-1,* \
CDEF:cdefbe=b,6900000,/,100,*,8,*,10,LE,b,6900000,/,100,*,8,*,0,GT,b,8,*,-1,*,UNKN,IF,UNKN,IF \
CDEF:cdefbf=b,6900000,/,100,*,8,*,20,LE,b,6900000,/,100,*,8,*,10,GT,b,8,*,-1,*,UNKN,IF,UNKN,IF \
CDEF:cdefbg=b,6900000,/,100,*,8,*,30,LE,b,6900000,/,100,*,8,*,20,GT,b,8,*,-1,*,UNKN,IF,UNKN,IF \
CDEF:cdefbh=b,6900000,/,100,*,8,*,40,LE,b,6900000,/,100,*,8,*,30,GT,b,8,*,-1,*,UNKN,IF,UNKN,IF \
CDEF:cdefbi=b,6900000,/,100,*,8,*,50,LE,b,6900000,/,100,*,8,*,40,GT,b,8,*,-1,*,UNKN,IF,UNKN,IF \
CDEF:cdefbj=b,6900000,/,100,*,8,*,60,LE,b,6900000,/,100,*,8,*,50,GT,b,8,*,-1,*,UNKN,IF,UNKN,IF \
CDEF:cdefca=b,6900000,/,100,*,8,*,70,LE,b,6900000,/,100,*,8,*,60,GT,b,8,*,-1,*,UNKN,IF,UNKN,IF \
CDEF:cdefcb=b,6900000,/,100,*,8,*,80,LE,b,6900000,/,100,*,8,*,70,GT,b,8,*,-1,*,UNKN,IF,UNKN,IF \
CDEF:cdefcc=b,6900000,/,100,*,8,*,90,LE,b,6900000,/,100,*,8,*,80,GT,b,8,*,-1,*,UNKN,IF,UNKN,IF \
CDEF:cdefcd=b,6900000,/,100,*,8,*,5000,LE,b,6900000,/,100,*,8,*,90,GT,b,8,*,-1,*,UNKN,IF,UNKN,IF \
LINE1:cdefa#C0C0C0:"" \
COMMENT:"Inbound:" \
AREA:cdefc#35962B:"0-10%" \
AREA:cdefd#6EA100:"10-20%" \
AREA:cdefe#00CF00:"20-30%" \
AREA:cdeff#FAFD9E:"30-40%" \
AREA:cdefg#F5F800:"40-50%" \
AREA:cdefh#EAAF00:"50-60%" \
AREA:cdefi#EA8F00:"60-70%" \
AREA:cdefj#FF7D00:"70-80%" \
AREA:cdefba#DE0056:"80-90%" \
AREA:cdefbb#FF0000:"90-100%\n" \
LINE1:cdefbc#C0C0C0:"" \
COMMENT:"Outbound:" \
AREA:cdefbe#35962B:"0-10%" \
AREA:cdefbf#6EA100:"10-20%" \
AREA:cdefbg#00CF00:"20-30%" \
AREA:cdefbh#FAFD9E:"30-40%" \
AREA:cdefbi#F5F800:"40-50%" \
AREA:cdefbj#EAAF00:"50-60%" \
AREA:cdefca#EA8F00:"60-70%" \
AREA:cdefcb#FF7D00:"70-80%" \
AREA:cdefcc#DE0056:"80-90%" \
AREA:cdefcd#FF0000:"90-100%"
Steve

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#26 Post by Allen K » Tue Oct 25, 2005 10:45 pm

Please have a look at the rrdtool graph statements (select the wrench ...). If it occurs to be the same strange thing as above (2 lines containing a backslash only), then the answer is: yes. There's a solution (I've posted a bug report and appended a patch, see http://bugs.cacti.net/view.php?id=585).
Reinhard

I have applied this patch to my installation and everything is working correct now.

CDEF:cdefi=a,b,+,100000000,/,100,*,8,*,40,LE,a,b,+,100000000,/,100,*,8,*,30,GT,NEGINF,UNKN,IF,UNKN,IF \
CDEF:cdefj=a,b,+,100000000,/,100,*,8,*,60,LE,a,b,+,100000000,/,100,*,8,*,50,GT,NEGINF,UNKN,IF,UNKN,IF \
CDEF:cdefba=a,b,+,100000000,/,100,*,8,*,80,LE,a,b,+,100000000,/,100,*,8,*,70,GT,NEGINF,UNKN,IF,UNKN,IF \
CDEF:cdefbb=a,b,+,100000000,/,100,*,8,*,5000,LE,a,b,+,100000000,/,100,*,8,*,90,GT,NEGINF,UNKN,IF,UNKN,IF \
CDEF:cdefbe=a,8,* \
CDEF:cdefce=bb,8,* \
AREA:cdefa:"" \
AREA:cdefb:"":STACK \
AREA:cdefc#3ACE0C:" 0 - 10%":STACK \
AREA:cdefd#99FF99:"20 - 30%":STACK \




Spoke too soon, graph is now showing same percent in/out for the link... hrmmm
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#27 Post by Allen K » Wed Oct 26, 2005 12:28 am

False alarm..
I mistakinly had IfInOctets selected for both in/out in my data template. The patch applied in the above post fixes all errors and the template is now working correctly.

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#28 Post by SRY » Wed Oct 26, 2005 4:00 am

To reply to cjennings_cr post there are a number of explanations on CDEFs on the net but it still took me a awhile to understand how they work. CDEFs use reverse polish notation to calculate there answers and uses a stack to process variables, numbers and operations. I will try and explain the basic CDEF and one of the ones used in my graph posted before.

Note that by putting together this info document I have discovered a problem with my previously posted CDEFs which I will repost.

I hasten to add that I am no CDEF expert and what I am posting is mainly found by research and a lot of trial and error.

Simple form:

In Cacti there are a number of ways to identify variables that are used in the graph the following two examples would produce the same result if there was only one data source, Where “CURRENT_DATA_SOURCE” and “a” are the same variable. Take the graph that I posted earlier in this thread this uses two data sources and I have elected to call the “a” and “b” as per jas0420 original post. These relate to Data Source [traffic_in] and Data Source [traffic_out] in this example, if you have four Data Sources then you could have variables a,b,c,d for instance. The variable letter is relative to the order of the data sources are ordered in the graph template.

CURRENT_DATA_SOURCE,8,*

or

a,8,*

The above calculation converts bytes into bits. Variable “a” is the value obtained by the poll of the device from Cacti for our example here we will give “a” a value of 32 KBytes, therefore:

a,8,* will equate to 32000,8,* this can be turned into 32000 * 8 which equals 256000 bits.


so 32000 is placed on the stack and then 8 is placed on the stack then an multiple is places on the stack, all three entireties are replaced by 256000, CDEFs must only return one value if not you will get a lot of warnings about invalid CDEFs and your graphs will not display.

Now lets try something a bit more challenging, this is for the positive side of the graph where the value is between 0 and 10% of the interfaces throughput.

a,8,*,|query_ifSpeed|,/,100,*,10,LE,a,8,*,|query_ifSpeed|,/,100,*,0,GT,a,8,*,UNKN,IF,UNKN,IF

Here we have a number of variables:

“a” which is the number of bytes at the time of the sample.
“|query_ifSpeed|” which is the value defined by the Bandwidth statement on a Cisco in this example, this value could be replaced with the maximum bandwidth of the interface. This value is defined in bits.

The stack is empty and then we put the following in:

a,8,* this will convert the bytes into bits 32000,8,* and is equal to 256000

the stack now contains 256000 and the next part of the CDEF is placed on the stack

256000,|query_ifSpeed|,/, this would be 256000,6900000,/ and equal 0.037101449275362318840579710144928

Our internet link is 6900 Kbits as defined on the router and is listed as 6900000 in Cacti interface speed on the devices page.

The stack now contains the number 0.037101449275362318840579710144928

To this we add 100 and then a multiply operation

0.037101449275362318840579710144928,100,/ and is equal to 3.7101449275362318840579710144928.

The stack now contains 3.7101449275362318840579710144928

We then push 10 to the stack and the LE operation (Less than or equal to).

3.7101449275362318840579710144928,10,LE

“LE” compares the first value to the second and if it is true returns 1, false returns 0, in this case 3.7101449275362318840579710144928 is less than 10 so 1 is placed on the stack.

1

Now we check to see if the a,8,*,|query_ifSpeed|,/,100,* is grater than zero.

The calculation needs to be done again as the only value on the stack is 1 at the moment so after the above calculation we have the following in the stack:

1, 3.7101449275362318840579710144928

We now add 0 and do the comparison so the stack looks like this:

1, 3.7101449275362318840579710144928,0,GT

GT will pop 3.7101449275362318840579710144928 and 0 from the stack and as 3.7101449275362318840579710144928 is greater than zero it will place 1 on the stack.

The stack is now contains

1,1

now we will add the following calculation to the stack


a,8,*

This will add 32000,8 and the multiply variable to the stack:

1,1,32000,8,*

the multiple operator will take 32000 and 8 from the stack and return 256000 so the following this the stack contains

1,1,256000

Now we are moving into the IF function of the CDEF the next two items added to the stack are:

UNKN,IF

UNKN is a function to represent an unknown number.

So the stack looks like this

1,1,256000, UNKN,IF

The IF function pops three values from the stack in this case:

1,256000,UNKN

the IF function looks at the left hand most function and if it is 0 it will return the middle value or if it is 1 then it will return the right most value. So in our case it returns 256000 as the left hand variable is 1.

The stack now looks like this

1,256000

The second “IF” statement is now executed so the stack looks like this

1,256000, UNKN,IF

Here again the 1 indicates that the IF statement is true, therefore the result of the CDEF is

256000 and this is what is plotted as an area on the graph.

If the answer had been 0 then UNKN would be returned, UNKN can not be graphed.

NEGINF and INF define infinity in the graph and is used to plot a area from a point to the upper, INF, or lower, NEGINF, border of the graph and hence why you can not use it in a graph that uses both positive and negative values as the would overwrite each other.


I hope this help with your understanding of CDEFs and lets you explore there potential a bit more.

:lol:
Steve

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Pumpi
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#29 Post by Pumpi » Mon Dec 05, 2005 8:03 am

Tried tio implemet this on my Test Server and I get following error:

ERROR: Could not make sense out of ':cdefc#3ACE0C: 0 - 10%:STACK'

:roll:

nduda78
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#30 Post by nduda78 » Tue Dec 13, 2005 8:31 am

I get this,

ERROR: STACK must follow AREA, LINE or STACK

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