[hobbit] how to decrease default step of 300sec to 60sec in hobbitd_rrd
Norbert Kriegenburg
norbert.kriegenburg at de.ibm.com
Sun Nov 8 17:59:22 CET 2009
Thanks Thomas,
this community is so incredible. this was the patch I missed.
After applying it, everything works like a charm.
I know that it is quite ugly to mix versions, but now I have separate rrd
with a 60s step in parallel to my poduction env, and can have a look at the
results.
It was above all a draft to present the managment the possibility of
collecting values every minute for at least 14 days with full granularity
with xymon.
Now I can make a profound suggestion to update Xymon and restart collecting
the NCV.
Everybody (including me) will be lucky.
Xymon and this community is awesome!
Thank you and have a nice Sunday evening...
Norbert Kriegenburg
From: Thomas Eckert <tom at IT-Eckert.de>
To: hobbit at hswn.dk
Date: 08.11.2009 17:10
Subject: Re: [hobbit] how to decrease default step of 300sec to 60sec in hobbitd_rrd
Hi Norbert,
the duplicate DS name lambda is a known bug in 4.3.0_beta2 (and if
current SVN too at last a few days ago), see the following post:
http://www.hswn.dk/hobbiton/2008/10/msg00423.html
patch attached for convenience (that works for sure on 4.3.0_beta2 on
several installation for me).
good luck with your mixed versions,
Thomas
PS: I'd expect that your system would be more stable with a complete
switch to 4.3.0_beta2 -- or even the current SVN -- compared to blending
versions. But you may have good reasons for not upgrading completely.
Norbert Kriegenburg wrote:
> Hi Thomas,
>
> thank you for your response on Sunday,
> I've found this in the source of the latest beta release today morning as
> well.
>
> But unfortunately I have to deal with our production environment, and I
> would like to avoid going to the next release this time.
> If there is no other chance to realize this by patching the 4.2.3
sources,
> I have to go this way.
>
> Today I tried to make use of the compiled hobbitd_rrd from 4.3.0 and
> inserted into my env, modified and copied the hobbit-rrddefinitions.cfg
> into etc.
> It worked so far, but for all my SPLITNCV I get a:
>
> 2009-11-08 14:11:12 RRD error creating xxxxxx.rrd: Duplicate DS name:
> lambda
>
> I will try to locate the missing files to patch to make this work, but
I'm
> afraid that I have to update all the xymon stuff.
> (Its some work to do, because we have a heavy modified xymon running).
>
> Any other hints somebody?
>
> Norbert Kriegenburg
>
>
>
> From: Thomas Eckert <tom at IT-Eckert.de>
>
> To: hobbit at hswn.dk
>
> Date: 08.11.2009 14:34
>
> Subject: Re: [hobbit] how to decrease default step of 300sec to
60sec in hobbitd_rrd
>
>
>
>
>
>
> Hi Norbert,
>
> from a grep in the source (xymon-4.3.0_beta2) I _guess_ that it's in
> hobbitd/do_rrd.c: around line 52:
> /* How often do we feed data into the RRD file */
> #define DEFAULT_RRD_INTERVAL 300
> static int rrdinterval = DEFAULT_RRD_INTERVAL;
>
> To make use of all this you need to send data every minute too of course.
>
> Cheers,
>
> Thomas
>
> Norbert Kriegenburg wrote:
>> Hi guys,
>>
>> we are monitoring with BigBrother/bbgen/xymon since a couple of years
now
>> with great success.
>> Nothings beats the flexibility and speed of xymon.
>>
>> But now I have a problem I can't find a solution for (xymon 4.2.3. on
>> RHEL):
>>
>> I have to design all the rrd files to collect data with a cycle of 60sec
>> insted of the default 300sec.
>> I found the places where I have to set up the new definitions of the
RRAs
>> in hobbitd_rrd.c:
>>
>> static char rra1[] = "RRA:AVERAGE:0.5:1:2880"; /* 60s for 2d */
>> static char rra2[] = "RRA:AVERAGE:0.5:5:20160"; /* 60s for 2w */
>> static char rra3[] = "RRA:AVERAGE:0.5:15:5760"; /* 900s for 8w */
>> static char rra4[] = "RRA:AVERAGE:0.5:60:12096"; /* 1h for 18m */
>> static char rra5[] = "RRA:MAX:0.5:1:2880";
>> static char rra6[] = "RRA:MAX:0.5:5:20160";
>> static char rra7[] = "RRA:MAX:0.5:15:5760";
>> static char rra8[] = "RRA:MAX:0.5:60:12096";
>>
>> and the definitions in do_*.c to: sprintf(dsdef, "DS:lambda:%s:120:U:U",
>> dstype);
>> and so on to reflect the shorter cycle.
>>
>> Compiled everything, and copy the new hobbit_rrd as hobbit_rrd1minute
> into
>> $BBHOME/bin
>> I created a new channel (in parallel to the working hobbit_rrd) with own
>> rrd-dir and logfile:
>>
>> [rrdstatus1minute]
>> ENVFILE /opt/xymon/server/etc/hobbitserver.cfg
>> NEEDS hobbitd
>> CMD hobbitd_channel --channel=status --log=
>> $BBSERVERLOGS/rrd-status1minute.log hobbitd_rrd1minute --rrddir=
>> $BBVAR/rrd1minute
>> INTERVAL 1m
>>
>> Everything is working, the rrdfiles where created, but if I do a
"rrdtool
>> info examplefile.rrd", I only find the default step of 300s:
>>
>> rrd_version = "0003"
>> step = 300
>> last_update = 1257631284
>> ds[lambda].type = "GAUGE"
>> ds[lambda].minimal_heartbeat = 120
>>
>> There are no values collected ("NaN"), and all files where updated only
>> every 5min and not every 60s.
>>
>> I did'nt find the place, where I can define the rrdcreate with "--step
>> 60".
>>
>> Unfortunately I have no chance to switch everything to extra-scripts,
>> because we have a quite complex and dynamic environment in our
monitoring
>> and I'm glad, that everything is running smooth (mostly using
SPLITNCV).
>>
>> Any hints, what I have to change to collect my rrd-values with a 60sec
>> cycle?
>>
>> help is greatly appreciated
>> thank you
>>
>> Mit freundlichen Grüßen / Kind regards
>>
>> Norbert Kriegenburg
>>
>>
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>> hobbit-unsubscribe at hswn.dk
>>
>>
>
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--- hobbitd/rrd/do_ncv.c.org 2009-10-02 14:33:37.000000000 +0200
+++ hobbitd/rrd/do_ncv.c 2009-10-02 14:33:46.000000000 +0200
@@ -177,7 +177,7 @@
}
}
- if (split_ncv && (paridx > 1)) {
+ if (split_ncv && (paridx > 0)) {
create_and_update_rrd
(hostname, testname, classname, pagepaths, params, NULL);
/* We've created one RRD,
so reset the params for the next one */
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