[Xymon] errors with custom graphs

[Sheel Shah]

Hi J.C.

Thanks for your reply. Unfortunately, switching it to a SPLITNCV didn't have any effect. When I used the RRDTOOL to dump the contents of the RRD files, the data values are still showing as NaN. I confirmed the script I wrote is displaying the data in the new column on the Xymon homepage (column name is MC-TFH-8K01-11111). This is what is showing when I click the green icon to view the detail:

Hits : <number value>
Misses : <number value>
reqs : <number value>
Gets : <number value>
Gets per min : <number value>
Sets per min : <number value>
Sets : <number value>
storage : <number value>
items : <number value>
hitratio : <percentage value> 
Used Connection : <percentage value>

Are the datatypes required to be uniquely named? In another column on the same host, I have similar data being displayed, with the same names. The graphing functions correctly in that column.

I apologize, but I am somewhat new to writing scripts in Xymon. I'm not familiar with the Xymon_rrd tool. Can you explain how to have it generate the rrd files and to run in debug mode?

Thanks,
Sheel

-----Original Message-----
From: J.C. Cleaver [mailto:cleaver at terabithia.org] 
Sent: Tuesday, January 27, 2015 9:19 PM
To: Sheel Shah
Cc: xymon at xymon.com
Subject: Re: [Xymon] errors with custom graphs

On Tue, January 27, 2015 11:45 am, Sheel Shah wrote:
> Hello,
>
> I set up some custom graphs to monitor my Memcached instances. 
> However, I appear to have run into an issue. I set up my 
> xymonserver.cfg to collect all of my data into one NCV file, as 
> evidenced by my TEST2RRD and my configuration below. I also believe I defined the datatypes appropriately.
> The issue that I am seeing is in the RRD file itself, when I use the 
> RRDTOOL to dump the file. All of the values for the various datatypes 
> are showing as NaN. Would someone be able to point me in the direction 
> of what I could be doing wrong?
>
> Thank you,
> Sheel
>
> TEST2RRD="<other
> stuff>,memcache-test=ncv,MC-TFH-8K01-11221=ncv,MC-TFH-8K01-11222=ncv,MC-TFH-8K02-11221=ncv,MC-TFH-8K02-11222=ncv"
>
> NCV_memcache-test="Hits:GAUGE,Misses:GAUGE,reqs:GAUGE,Gets:GAUGE,Sets:GAUGE,storage:GAUGE,items:GAUGE,hitratio:GAUGE,*:NONE"
> NCV_MC-TFH-8K01-11111="Hits:DERIVE,Misses:DERIVE,reqs:DERIVE,Gets:DERIVE,Sets:DERIVE,storage:DERIVE,items:DERIVE,hitratio:DERIVE,*:NONE"
> _______________________________________________
> Xymon mailing list
> Xymon at xymon.com
> http://lists.xymon.com/mailman/listinfo/xymon
>


Sheel,

Many of our tests are using SPLITNCV, but that seems like it should be valid syntax.

Have you been doing development on this system? RRDtool will expect the template to match exactly and if the rrd file has a different set of DS's in it from its initial definition the values might not be being inserted properly.

You might want to try blowing away any existing RRD files for this type and letting xymond_rrd re-create them.

Also, can you try running xymond_rrd in --debug mode to see if any unusual errors are thrown on insertion?


HTH,

-jc