How to create graph for ping (response time and packet loss) - Open Source Network Monitoring and Systems Management

guyverix

846 posts since
Jul 10, 2007

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30. Mar 29, 2008 2:27 PM (in response to cdillardhsp)

Re: How to create graph for ping (response time and packet l

Check and see if you are ending up with defunct processes as well. I had issues with timeouts causing in my case nagios style http page checks to hang. The only fix was to restart zencommand.

I have not tested it, but maybe run the command on a nonexistent or down box, and see what the output is, and make it something that conforms to what you normally receive when the box is running normally, but with a value of zero.

"cdillardhsp" wrote:

Yep, restarting the zencommand daemon kicked the graphs off again. I wish I could provide more info but our Zenoss box is offline for now - bad fan and parts are on order. Will dig into this more once the box is running again.

Thanks Chet,
Clay

On Sun, 2008-03-23 at 08:05 -0400, Chet Luther wrote:

On Mar 23, 2008, at 6:49 AM, Clayton Dillard wrote:

Maybe one of the Zenoss staff could hop in on this one more time. I
followed some instructions from a Forum post on Zenoss (referenced
in one of these list mails) and at first my RTA and loss were being
graphed. Now I have empty graphs. Strange.

I'd say that's strange too. How long were they getting graphed for?
Minutes, hours, days? You can find the RRD file that the data points
are being written to under ZENHOME/perf/Devices/deviceName/. They'll
be named like dataSource_dataPoint. See when the last time was that
these files were updated.

You could restart zencommand (the daemons responsible for executing
these checks) with more verbose logging enabled. This will allow you
to better follow what it is executing and recording in the ZENHOME/
log/zencommand.log file. Do do this run "zencommand stop" then
"zencommand start -v 10" as the zenoss user.
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Clayton Taylor Dillard

http://hspcd.blogspot.com/

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cdillardhsp

127 posts since
Mar 17, 2007

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31. Apr 2, 2008 9:18 PM (in response to guyverix)

How to create graph for ping (response time and packet loss)

Ok, so after adding these commands to check ping latency the zencommand
daemon crashes regularly. Zenoss folks, do you have a method of
implementing ping latency with graphing that will not crash the
zencommand daemon?

Thank you,
Clay

Chet Luther wrote:

On Mar 23, 2008, at 6:49 AM, Clayton Dillard wrote:

Maybe one of the Zenoss staff could hop in on this one more time. I
followed some instructions from a Forum post on Zenoss (referenced in
one of these list mails) and at first my RTA and loss were being
graphed. Now I have empty graphs. Strange.

I'd say that's strange too. How long were they getting graphed for?
Minutes, hours, days? You can find the RRD file that the data points
are being written to under ZENHOME/perf/Devices/deviceName/. They'll
be named like dataSource_dataPoint. See when the last time was that
these files were updated.

You could restart zencommand (the daemons responsible for executing
these checks) with more verbose logging enabled. This will allow you
to better follow what it is executing and recording in the
ZENHOME/log/zencommand.log file. Do do this run "zencommand stop"
then "zencommand start -v 10" as the zenoss user.
_______________________________________________
zenoss-users mailing list
zenoss-users@zenoss.org
http://lists.zenoss.org/mailman/listinfo/zenoss-users

_______________________________________________
zenoss-users mailing list
zenoss-users@zenoss.org
http://lists.zenoss.org/mailman/listinfo/zenoss-users

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Guest

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32. Apr 3, 2008 7:26 AM (in response to cdillardhsp)

How to create graph for ping (response time and packet loss)

On 03/04/2008, Clayton Dillard <claytondillard@gmail.com ([email]claytondillard@gmail.com[/email])> wrote:

Ok, so after adding these commands to check ping latency the zencommand
daemon crashes regularly. Zenoss folks, do you have a method of
implementing ping latency with graphing that will not crash the
zencommand daemon?

Have you confirmed that it is the check_ping commands causing your problems. I've been running these commands for months now, admittedly only for a few devices, for months now without a problem.

I think the zencommand log should show the issues, particularly if the daemon is started with debug logging enabled.

--
Regards,

Graham Bloice

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snarkout

85 posts since
Dec 20, 2007

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33. Apr 3, 2008 1:34 PM (in response to Guest )

RE: How to create graph for ping (response time and packet loss)

You can use something like these (on linux boxen), though they are fairly hackish, and haven't been thought through more than the 2 min it took me to verify they give me valid output:

/bin/echo -e \|`/bin/ping -c1 -host- | grep icmp_seq | cut -d" " -f7`

/bin/echo \|loss=`/bin/ping -c1 -host- | grep 'packet loss' | cut -d " " -f 6`

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arrrghhh

13 posts since
May 21, 2010

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34. Jun 7, 2010 2:11 PM (in response to snarkout)

Re: RE: How to create graph for ping (response time and packet loss)

So did anyone figure out how to do this? I'm trying to get away from NMIS, which is a horrible and old network management system. However, it makes these beautiful ping graphs on its own (seemingly) so how can Zenoss do this? I kind of assumed that's what would be in the performance section - on a router, I don't really care that much about the memory and cpu consumption, a graph of the ping response times would be MUCH better...

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Andrea Consadori

863 posts since
Feb 11, 2008

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35. Jun 7, 2010 2:48 PM (in response to arrrghhh)

Re: RE: How to create graph for ping (response time and packet loss)

try this zenpack

docs/DOC-3467

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Matt Ray

2,484 posts since
Apr 5, 2008

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36. Jun 7, 2010 4:05 PM (in response to arrrghhh)

Re: RE: How to create graph for ping (response time and packet loss)

Just reposted what we went over in IRC...

Ping Template and Command Data Source Walkthrough

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arrrghhh

13 posts since
May 21, 2010

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37. Jun 8, 2010 11:52 AM (in response to Matt Ray)

Re: RE: How to create graph for ping (response time and packet loss)

Cool, thanks guys!

Update: I ended up going a slightly different route. I liked the check_ping method, but did not like the fact that it sent out 5 ICMP packets no matter what. So I followed this tut - docs/DOC-2513 - and we'll see how I like it. Seems good so far.

I still wish that there was this type of feature built-in to Zenoss... Zenping is already pinging all my devices, can't I use the stats from that to shape latency graphs in this manner? It would reduce overhead on all systems, because now I'm doing more pings than necessary I believe. My template is now pinging devices, as is Zenping. To me, that just seems silly... Hopefully this will be integrated into the system soon! Thanks for the support!

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