[Xymon] Trending too many interfaces - see regex

[Tim McCloskey]

Colin, 

I've not had the time, desire or opportunity to play with any of the newish RedHat releases and associated gizmos.  This said, I accept that your 'ifconfig rhevm' returns data in the same format as 'ifconfig eth0'.  

Most linux interface names end with some number,  or are called 'lo'.  'rhevm' does not seem to follow that norm.  I suspect trending of rhevm might be failing for this reason.

In xymon-4.3.2/xymond/rrd/do_ifstat.c on line 22 we see the following regex:
^([a-z]+[0123456789.:]+|lo)

Remove the localhost part and it looks like this:
^([a-z]+[0123456789.:]+)

Expand that and we have:
^rhevm+[0-9.:]+

To me, that looks like rhevm by itself is not a match.  Folks who actually write the code / have a clue about GNU C regex /  can probably address this better than I.

Regards, 

Tim


________________________________________
From: xymon-bounces at xymon.com [xymon-bounces at xymon.com] On Behalf Of Colin Coe [colin.coe at gmail.com]
Sent: Wednesday, April 27, 2011 4:53 PM
To: xymon at xymon.com
Subject: Re: [Xymon] Trending too many interfaces

Yep, in /usr/lib/xymon/client/bin/xymonclient-linux.sh I have:
---
# Bug in RedHat's netstat spews annoying error messages.
netstat -ant 2>/dev/null
echo "[ifstat]"
/sbin/ifconfig lo
/sbin/ifconfig bond2
/sbin/ifconfig rhevm
# Report mdstat data if it exists
---

However there is no rhevm interface listed on the trending page.

CC

On Thu, Apr 28, 2011 at 7:32 AM, Tim McCloskey <tm at freedom.com> wrote:
> What shows up under 'Client data available' for the [ifconfig] and [ifstat] details?  [ifconfig] should list all of the interfaces.  [ifstat] should only show what you defined.
>
>> The only interfaces I want graphed are "rhevm" and "bond2".
>
> That would be:
> echo "[ifstat]"
> /sbin/ifconfig rhevm
> /sbin/ifconfig bond2
>
> [ifstat] should show the output from the above commands, which should then be on the trends page under Network Traffic.
>
> I'll be taking a look at 4.3.2 sometime in the near future, maybe it's different there.
>
> Tim
>
> ________________________________________
> From: xymon-bounces at xymon.com [xymon-bounces at xymon.com] On Behalf Of Colin Coe [colin.coe at gmail.com]
> Sent: Wednesday, April 27, 2011 4:02 PM
> To: xymon at xymon.com
> Subject: Re: [Xymon] Trending too many interfaces
>
> Yeah, that's pretty much what I did, except I now notice that the
> bridge interfaces are not listed on the trending page.  One of these
> bridge interfaces has an IP address and I'd like to trend it.
>
> I've done a few quick greps through the source but can't see where
> these bridges a re being stripped out.
>
> CC
>
>
> On Thu, Apr 28, 2011 at 12:14 AM, Tim McCloskey <tm at freedom.com> wrote:
>> Colin,
>>
>> I have not installed any of the newer xymon versions, this is from 4.2.0.
>>
>> On a system with eth0->eth3 plumbed up I set the client shell script (client/bin/hobbitclient-linux.sh) to:
>>
>> echo "[ifstat]"
>> /sbin/ifconfig eth0
>> /sbin/ifconfig eth2
>>
>> Verified the data sent from one of the 'Client data available' data sets.
>> Removed the rrd files for ifstat from the server for that client. (stopped/started the client).
>>
>> On the trends page I see eth0 and eth2 only, no eth1 or eth3.
>>
>> Yeah, it's a hack but it's fairly minor and should be easy enough to manage.
>>
>> Just my 3 cents.
>>
>> Tim
>>
>>
>>
>>
>> ________________________________________
>> From: xymon-bounces at xymon.com [xymon-bounces at xymon.com] On Behalf Of Colin Coe [colin.coe at gmail.com]
>> Sent: Tuesday, April 26, 2011 8:19 PM
>> To: xymon at xymon.com
>> Subject: Re: [Xymon] Trending too many interfaces
>>
>> Hi Vernon and Tim
>>
>> I'm working in a new dev/test environment using Xymon 4.3.2.
>>
>> I'd wanted to avoid hacking the client-side script but if that's whats
>> required, I'll have a look.
>>
>> TIA
>>
>> CC
>>
>> On Wed, Apr 27, 2011 at 11:01 AM, Tim McCloskey <tm at freedom.com> wrote:
>>> This is a crazy guess, you don't mention which version of xymon so this may be way off.  It may be way off anyway :)
>>>
>>> If you are talking about the trends/"Network Traffic" graph it seems to be getting that data from the 'ifstat' var.
>>>
>>> Some details follow.
>>>
>>> 1. what we graph for ifstat
>>> hobbitgraph.cfg:        FNPATTERN ifstat.(.+).rrd
>>> See data/rrd/$hostname/ifstat.*
>>>
>>> 2. where ifstat originates
>>> client/hobbitclient-linux.sh:
>>> echo "[ifstat]"
>>> /sbin/ifconfig
>>>
>>> 3. what happens to ifstat
>>> hobbitd/client/linux.c: ifstatstr = getdata("ifstat");
>>> hobbitd/client/linux.c: unix_ifstat_report(hostname, clienttype, os, hinfo, fromline, timestr, ifstatstr); <--- ifstatstr
>>>
>>> You should be able to modify the client shell script to report other than ifconfig -a (which seems to be what is currently captured).  Of course, there must be a better way.
>>>
>>>
>>> Regards,
>>>
>>> Tim
>>>
>>>
>>> ________________________________________
>>> From: xymon-bounces at xymon.com [xymon-bounces at xymon.com] On Behalf Of Colin Coe [colin.coe at gmail.com]
>>> Sent: Tuesday, April 26, 2011 7:02 PM
>>> To: xymon at xymon.com
>>> Subject: Re: [Xymon] Trending too many interfaces
>>>
>>> Anyone have any thoughts on this?
>>>
>>> The only interfaces I want graphed are "rhevm" and "bond2".
>>>
>>
>>
>>
>> --
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>
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