RRD Graphing configuration 🔗 link

From: Bill Richardson [mailto:user-47ee0335f310@xymon.invalid]
Sent: Monday, August 11, 2008 9:54 AM
To: user-ae9b8668bcde@xymon.invalid
Subject: [hobbit] RRD Graphing configuration

I have looked high and low for a way to change how custom rrd's are created in hobbit.

I have created a custom script to graph and have 2 problems that I would like to figure out.

1.) I would like to change the step from 300 secs to 60 secs in the rrd's and run the script ever 60 secs instead of 300 secs. "The default rrd behavior is set to 300 secs"
2.) I would like to get the true values not average. The problem is I have data that I want to graph that can range from 0 to 5  "thats 0, 1, 2, 3, 4  or 5" and the graph shows average so my graphs come out with numbers like 6m "6 milli" for a true value of 2 and so on. The problem is the data will sit a 0 for an hour or more and then go to 1 or 2 for just one sample. Average is not the right choice and I cant get the true figures I 'm looking for.

 Seems like the way to do this is in the hobbitserver.cfg. I added the following to the hobbitserver.cfg

NCV_testgraph="test1total:GAUGE,test2total:GAUGE,test3total:GAUGE"

What other values can you pass to rrd other than GAUGE? Can I set a step to say 60 instead or 300 and can I change the default behavior of AVERAGE to something else that may work for my above example? The rrd docs are not clear on this.

Early on I was thinking that maybe I could fix the AVERAGE problem with a change to the hobbitgraph.cfg but this is what I found:
The hobbitgraph.cfg does not have any effect on how rrd file is created. I deleted the testgraph.rrd made the changes to hobbitgraph.cfg and no go. You cant see the graphs if you use anything but AVERAGE after changing the hobbitgraph.cfg. It looks like the *.rrd's are created by default "AVERAGE" and you just edit the hobbitgraph.cfg to view whats already built. I need to figure out how to change the way the rrd's are built and its not thru the hobbitgraph.cfg.

BTW here is the output from rrdtool dump see attached.

You will see two areas that need to be changed "the step 300 and AVERAGE"
1:
<!-- Round Robin Database Dump --><rrd> <version> 0003 </version>

<step> 300 </step> <!-- Seconds -->

2:

<!-- Round Robin Archives --> <rra>

<cf> AVERAGE </cf>

Thanks for any clues... : )

Bill Richardson

On Mon, Aug 11, 2008 at 8:53 AM, Bill Richardson <user-47ee0335f310@xymon.invalid>wrote:

 I have looked high and low for a way to change how custom rrd's are
created in hobbit.

I have created a custom script to graph and have 2 problems that I would
like to figure out.

1.) I would like to change the step from 300 secs to 60 secs in the rrd's
and run the script ever 60 secs instead of 300 secs. "The default rrd
behavior is set to 300 secs"
2.) I would like to get the true values not average. The problem is I
have data that I want to graph that can range from 0 to 5  "thats 0, 1, 2,
3, 4  or 5" and the graph shows average so my graphs come out with numbers
like 6m "6 milli" for a true value of 2 and so on. The problem is the
data will sit a 0 for an hour or more and then go to 1 or 2 for just one
sample. Average is not the right choice and I cant get the true figures I 'm
looking for.

 Seems like the way to do this is in the hobbitserver.cfg. I added the
following to the hobbitserver.cfg

NCV_testgraph="test1total:GAUGE,test2total:GAUGE,test3total:GAUGE"

 What other values can you pass to rrd other than GAUGE? Can I set a step
to say 60 instead or 300 and can I change the default behavior of AVERAGE to
something else that may work for my above example? The rrd docs are not
clear on this.

Early on I was thinking that maybe I could fix the AVERAGE problem with a
change to the hobbitgraph.cfg but this is what I found:
The hobbitgraph.cfg does not have any effect on how rrd file is created. I
deleted the testgraph.rrd made the changes to hobbitgraph.cfg and no go.
You cant see the graphs if you use anything but AVERAGE after changing the
hobbitgraph.cfg. It looks like the *.rrd's are created by default "AVERAGE"
and you just edit the hobbitgraph.cfg to view whats already built. I need to
figure out how to change the way the rrd's are built and its not thru
the hobbitgraph.cfg.

                                                                           
                                                                           
I have looked high and low for a way to change how custom rrd's are created
in hobbit.

I have created a custom script to graph and have 2 problems that I would
like to figure out.

1.) I would like to change the step from 300 secs to 60 secs in the rrd's
and run the script ever 60 secs instead of 300 secs. "The default rrd
behavior is set to 300 secs"
2.) I would like to get the true values not average. The problem is I have
data that I want to graph that can range from 0 to 5  "thats 0, 1, 2, 3, 4
or 5" and the graph shows average so my graphs come out with numbers like
6m "6 milli" for a true value of 2 and so on. The problem is the data will
sit a 0 for an hour or more and then go to 1 or 2 for just one sample.
Average is not the right choice and I cant get the true figures I 'm
looking for.

 Seems like the way to do this is in the hobbitserver.cfg. I added the
following to the hobbitserver.cfg

NCV_testgraph="test1total:GAUGE,test2total:GAUGE,test3total:GAUGE"

What other values can you pass to rrd other than GAUGE? Can I set a step to
say 60 instead or 300 and can I change the default behavior of AVERAGE to
something else that may work for my above example? The rrd docs are not
clear on this.

Early on I was thinking that maybe I could fix the AVERAGE problem with a
change to the hobbitgraph.cfg but this is what I found:
The hobbitgraph.cfg does not have any effect on how rrd file is created. I
deleted the testgraph.rrd made the changes to hobbitgraph.cfg and no go.
You cant see the graphs if you use anything but AVERAGE after changing the
hobbitgraph.cfg. It looks like the *.rrd's are created by default "AVERAGE"
and you just edit the hobbitgraph.cfg to view whats already built. I need
to figure out how to change the way the rrd's are built and its not thru
the hobbitgraph.cfg.

BTW here is the output from rrdtool dump see attached.

You will see two areas that need to be changed "the step 300 and AVERAGE"
1:
<!-- Round Robin Database Dump --><rrd> <version> 0003 </version>


<step> 300 </step> <!-- Seconds -->


2:


<!-- Round Robin Archives --> <rra>


<cf> AVERAGE </cf>


Thanks for any clues... : )

Bill Richardson

 
Sigurður Guðbrandsson<mailto:user-f6f2e0690a1f@xymon.invalid> wrote a pretty detailed tutorial on what he through setting up a custom graph that I put up on The Shire's tutorial page.

=G=

From: Bill Richardson [mailto:user-47ee0335f310@xymon.invalid]
Sent: Monday, August 11, 2008 9:54 AM
To: user-ae9b8668bcde@xymon.invalid
Subject: [hobbit] RRD Graphing configuration

I have looked high and low for a way to change how custom rrd's are created in hobbit.

I have created a custom script to graph and have 2 problems that I would like to figure out.

1.) I would like to change the step from 300 secs to 60 secs in the rrd's and run the script ever 60 secs instead of 300 secs. "The default rrd behavior is set to 300 secs"
2.) I would like to get the true values not average. The problem is I have data that I want to graph that can range from 0 to 5  "thats 0, 1, 2, 3, 4  or 5" and the graph shows average so my graphs come out with numbers like 6m "6 milli" for a true value of 2 and so on. The problem is the data will sit a 0 for an hour or more and then go to 1 or 2 for just one sample. Average is not the right choice and I cant get the true figures I 'm looking for.

Seems like the way to do this is in the hobbitserver.cfg. I added the following to the hobbitserver.cfg

NCV_testgraph="test1total:GAUGE,test2total:GAUGE,test3total:GAUGE"

What other values can you pass to rrd other than GAUGE? Can I set a step to say 60 instead or 300 and can I change the default behavior of AVERAGE to something else that may work for my above example? The rrd docs are not clear on this.

Early on I was thinking that maybe I could fix the AVERAGE problem with a change to the hobbitgraph.cfg but this is what I found:
The hobbitgraph.cfg does not have any effect on how rrd file is created. I deleted the testgraph.rrd made the changes to hobbitgraph.cfg and no go. You cant see the graphs if you use anything but AVERAGE after changing the hobbitgraph.cfg. It looks like the *.rrd's are created by default "AVERAGE" and you just edit the hobbitgraph.cfg to view whats already built. I need to figure out how to change the way the rrd's are built and its not thru the hobbitgraph.cfg.

BTW here is the output from rrdtool dump see attached.

You will see two areas that need to be changed "the step 300 and AVERAGE"
1:
<!-- Round Robin Database Dump --><rrd> <version> 0003 </version>

<step> 300 </step> <!-- Seconds -->

2:

<!-- Round Robin Archives --> <rra>

<cf> AVERAGE </cf>

Thanks for any clues... : )

Bill Richardson

 
On Mon, Aug 11, 2008 at 8:53 AM, Bill Richardson <user-47ee0335f310@xymon.invalid>wrote:

 I have looked high and low for a way to change how custom rrd's are
created in hobbit.

I have created a custom script to graph and have 2 problems that I
would
like to figure out.

1.) I would like to change the step from 300 secs to 60 secs in the
rrd's
and run the script ever 60 secs instead of 300 secs. "The default rrd
behavior is set to 300 secs"
2.) I would like to get the true values not average. The problem is I
have data that I want to graph that can range from 0 to 5  "thats 0,

1, 2,

3, 4  or 5" and the graph shows average so my graphs come out with
numbers
like 6m "6 milli" for a true value of 2 and so on. The problem is the
data will sit a 0 for an hour or more and then go to 1 or 2 for just
one
sample. Average is not the right choice and I cant get the true
figures I 'm
looking for.

 Seems like the way to do this is in the hobbitserver.cfg. I added the
following to the hobbitserver.cfg

NCV_testgraph="test1total:GAUGE,test2total:GAUGE,test3total:GAUGE"

 What other values can you pass to rrd other than GAUGE? Can I set a
step
to say 60 instead or 300 and can I change the default behavior of

AVERAGE to

something else that may work for my above example? The rrd docs are
not
clear on this.

Early on I was thinking that maybe I could fix the AVERAGE problem
with a
change to the hobbitgraph.cfg but this is what I found:
The hobbitgraph.cfg does not have any effect on how rrd file is
created. I
deleted the testgraph.rrd made the changes to hobbitgraph.cfg and no
go.
You cant see the graphs if you use anything but AVERAGE after changing
the
hobbitgraph.cfg. It looks like the *.rrd's are created by default

"AVERAGE"

and you just edit the hobbitgraph.cfg to view whats already built. I
need to
figure out how to change the way the rrd's are built and its not thru
the hobbitgraph.cfg.

If you're comfortable about fooling with the source, there are a couple
of
places where you can make changes to achieve what you want:

hobbit-4.2.0/hobbitd/do_rrd.c contains these definitions:

     static char rra1[] = "RRA:AVERAGE:0.5:1:576";
     static char rra2[] = "RRA:AVERAGE:0.5:6:576";
     static char rra3[] = "RRA:AVERAGE:0.5:24:576";
     static char rra4[] = "RRA:AVERAGE:0.5:288:576";

BUT - if you change those, I think *every* new rrd created by Hobbit
would
pick up the same changes.

do_rrd.c also includes a bunch of test-specific files, one of which is
hobbitd/rrd/do_ncv.c.  That contains the code that examines NCV_xxx and
sets
up DS entries to match.:

         sprintf(dsdef, "DS:%s:%s:600:0:U", dsname, dstype);
or
         sprintf(dsdef, "DS:%s:DERIVE:600:0:U", dsname);

A bit further down it copies in the above rra1 - rra4 definitions.  So,
you
could change the hardwired DS and RRA values in do_ncv.c, but ONLY if
you
don't have any other NCV that would  need to be different...

Another way to get towards what you want would be to hand-create the
rrd.
Hobbit won't overwrite an existing rrd.  I think the rrdcreate would
look
something like this:

     rrdtool create testgraph \
        DS:test1total:GAUGE:60:0:U \
        DS:test2total:GAUGE:60:0:U \
        DS:test3total:GAUGE:60:0:U \
        RRA:AVERAGE:0.5:1:576 \
        RRA:AVERAGE:0.5:6:576 \
        RRA:AVERAGE:0.5:24:576 \
        RRA:AVERAGE:0.5:288:576

I haven't tried this myself, but I think Hobbit would be able to do
updates
correctly.

Ralph Mitchell

From: Bill Richardson [mailto:user-47ee0335f310@xymon.invalid]
Sent: Monday, August 11, 2008 1:30 PM
To: user-ae9b8668bcde@xymon.invalid
Subject: [hobbit] RE: RRD Graphing configuration

I see at http://www.trantor.org/theshire/doku.php/tutorials a link for "Develop your own graphing monitor using NCV" but it looks to be a dead link. Looks like that may have my answer? Anyone have the details?

Thanks

Bill Richardson

Sigurður Guðbrandsson<mailto:user-f6f2e0690a1f@xymon.invalid> wrote a pretty detailed tutorial on what he through setting up a custom graph that I put up on The Shire's tutorial page.

=G=

From: Bill Richardson [mailto:user-47ee0335f310@xymon.invalid]
Sent: Monday, August 11, 2008 9:54 AM
To: user-ae9b8668bcde@xymon.invalid
Subject: [hobbit] RRD Graphing configuration

I have looked high and low for a way to change how custom rrd's are created in hobbit.

I have created a custom script to graph and have 2 problems that I would like to figure out.

1.) I would like to change the step from 300 secs to 60 secs in the rrd's and run the script ever 60 secs instead of 300 secs. "The default rrd behavior is set to 300 secs"
2.) I would like to get the true values not average. The problem is I have data that I want to graph that can range from 0 to 5  "thats 0, 1, 2, 3, 4  or 5" and the graph shows average so my graphs come out with numbers like 6m "6 milli" for a true value of 2 and so on. The problem is the data will sit a 0 for an hour or more and then go to 1 or 2 for just one sample. Average is not the right choice and I cant get the true figures I 'm looking for.

Seems like the way to do this is in the hobbitserver.cfg. I added the following to the hobbitserver.cfg

NCV_testgraph="test1total:GAUGE,test2total:GAUGE,test3total:GAUGE"

What other values can you pass to rrd other than GAUGE? Can I set a step to say 60 instead or 300 and can I change the default behavior of AVERAGE to something else that may work for my above example? The rrd docs are not clear on this.

Early on I was thinking that maybe I could fix the AVERAGE problem with a change to the hobbitgraph.cfg but this is what I found:
The hobbitgraph.cfg does not have any effect on how rrd file is created. I deleted the testgraph.rrd made the changes to hobbitgraph.cfg and no go. You cant see the graphs if you use anything but AVERAGE after changing the hobbitgraph.cfg. It looks like the *.rrd's are created by default "AVERAGE" and you just edit the hobbitgraph.cfg to view whats already built. I need to figure out how to change the way the rrd's are built and its not thru the hobbitgraph.cfg.

BTW here is the output from rrdtool dump see attached.

You will see two areas that need to be changed "the step 300 and AVERAGE"
1:
<!-- Round Robin Database Dump --><rrd> <version> 0003 </version>

<step> 300 </step> <!-- Seconds -->

2:

<!-- Round Robin Archives --> <rra>

<cf> AVERAGE </cf>

Thanks for any clues... : )

Bill Richardson

true values not average. The problem is I
have data that I want to graph that can range from 0 to 5  "that's 0, 1,
2, 3, 4  or 5" and the graph shows average