SmokePing (a network latency measurement tool) users list

Wan Amishah Wan Mahmud | 1 Jul 2003 02:42

Picon

DNS

Hi All,
I'm monitoring a few DNS servers and it wors fine since the last 3 month.
Just to share my config file.

*** Probes

+ FPing
binary = /usr/local/sbin/fping

+ DNS
binary = /usr/bin/dig

*** Targets
probe = FPing

menu = Top
title = xxxx
remark = xxxx

+ Office
++ Data Center
+++Block A
++++Server A
menu = xxxx
title = xxxx
host = w.x.y.z
++++Server B
menu = xxxy
title = xxxy
host = w.x.y.z

(Continue reading)

lists.smokeping.wfitzgerald | 2 Jul 2003 00:06

EchoPing and multiple web servers

Hi All,

I have a load balancing device that distributes http requests across a
number of servers. I am trying to use Smokeping to monitor the
individual server, and have run into a bit of a hurdle. 

My scenario is as such www.mysite.com resolves to 5.5.5.5 
On the backend that load balances to 
2.2.2.1
2.2.2.2
2.2.2.3
2.2.2.4
...

Each IP address being an individual web server.

Each of these web servers responds to a request made with a host header
of www.mysite.com ... else nothing would work right?

Echoping has the ability for me to specify a url as one of the
"PROBE_CONF" options, but nowhere can I specify the IP address
separately. 

My issue is that although I can specify the IP address of the host at
level one of the config, I should be able to override the HTTP header in
the probe config.

This is what my example currently looks like 

--------------------------------------------

(Continue reading)

Lemaire, David W. | 3 Jul 2003 18:03

Removing latency between links

Hey Folks,
Is there a way to have SmokePing subtract the latency from one link to the
next ?
For instance, I have 4 links: A-B-C-D, I want to see the latency to target C
without whatever latency target B causes.
If anyone has done this, let me know.
Dave Lemaire 
Systems Administrator
603-924-9571 x5102
/*
Problems cannot be solved at the same level
of awareness that created them. -A. Einstein
*/

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black | 3 Jul 2003 18:55

Re: Removing latency between links

If you are using Cisco routers, try using the IOS ping. Works great.

On Thu, 3 Jul 2003, Lemaire, David W. wrote:

> Hey Folks,
> Is there a way to have SmokePing subtract the latency from one link to the
> next ?
> For instance, I have 4 links: A-B-C-D, I want to see the latency to target C
> without whatever latency target B causes.
> If anyone has done this, let me know.
> Dave Lemaire
> Systems Administrator
> 603-924-9571 x5102
> /*
> Problems cannot be solved at the same level
> of awareness that created them. -A. Einstein
> */
>
>
>
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(Continue reading)

Christian Hahn | 4 Jul 2003 11:48

Picon

IPv6 only usage

Hi,

I want to use smokeping for IPv6 only. Every time it comes up or reloades it
presents error messages :

"WARNING: Hostname 'IPv6-only.host' does currently not resolve to an IP
address"

This slows down the start of the tools and also sometimes the execution of
the CGI script.
Is there a way to avoid this messages or to avoid the checks smokeping does?

thanks and cheers
Christian

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Ralf Hildebrandt | 4 Jul 2003 13:46

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Some questions

Hi!

I have some questions regarding smokeping:

1) I use different types of probes (FPing, EchoPingHttp etc.)
   Is it possible to use different 
   step     = 60
   pings    = 20
   settings for each of the probe types?

2) DNS.pm doesn't seem to work properly. I checked the archives, but
   the definitive solution isn't out yet, or is it?

3) Alerts: Could somebody provide me with an alert example?

--

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Nipper, Arnold | 4 Jul 2003 13:56

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Re: Some questions

On Friday, July 04, 2003 1:46 PM, Ralf Hildebrandt
<Ralf.Hildebrandt <at> charite.de> wrote:
> 3) Alerts: Could somebody provide me with an alert example?
>

I'm monitoring a set of routers on an IXP LAN and want to know when RTT and
packet loss goes up or when actually a router drops out. Here is how the
config looks like

# Begin snippet

*** Alerts ***

from = xxxx
to = yyyy

+ lossdetect
type = loss
pattern = ==0%,==0%,==0%,>2%,>2%,>2%
comment = dropping more than 2% packets

+ noloss
type = loss
pattern = >2%,>2%,>2%,==0%,==0%,==0%
comment = packet loss back to normal

+ rtthigh
type = rtt
pattern = <2,<2,<2,>4,>4,>4
comment = RTT more than 4ms

(Continue reading)

Ralf Hildebrandt | 4 Jul 2003 14:06

Picon

Re: Some questions

* Nipper, Arnold <arnold <at> nipper.de>:

> I'm monitoring a set of routers on an IXP LAN and want to know when RTT and
> packet loss goes up or when actually a router drops out. Here is how the
> config looks like
> 
> # Begin snippet

This helped a lot. Thanks.

--

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Charite Campus Mitte                            Tel.  +49 (0)30-450 570-155
Referat V a - Kommunikationsnetze -             Fax.  +49 (0)30-450 570-916
AIM: ralfpostfix

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Christian Hahn | 4 Jul 2003 15:26

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Fw: IPv6 only usage

Hi,

I'm again. I looked at mail archive and read the discussion on the broken
DNS.pm. Looks like this is related to IPv6 too. If I define an IPv6 only host
name I get 100% loss for this host. Does anybody else saw this behaviour?

My smokeping is fresh installed, so my experience is not so good by now.
Hope it will increase over time ;)

cheers,
Christian

----- Forwarded message from Christian Hahn <hahn <at> berkom.de> -----

Date: Fri, 4 Jul 2003 11:48:58 +0200
From: Christian Hahn <hahn <at> berkom.de>
To: smokeping-users <at> list.ee.ethz.ch
Subject: [smokeping-users] IPv6 only usage

Hi,

I want to use smokeping for IPv6 only. Every time it comes up or reloades it
presents error messages :

"WARNING: Hostname 'IPv6-only.host' does currently not resolve to an IP
address"

This slows down the start of the tools and also sometimes the execution of
the CGI script.
Is there a way to avoid this messages or to avoid the checks smokeping does?

(Continue reading)

Nipper, Arnold | 7 Jul 2003 12:28

Picon

ERROR: Can not stop running instance of SmokePing (29687)

I get this error message when I try to restart smokeping sometimes

bin/smokeping -restart
### fping seems to report in 1 miliseconds
ERROR: Can not stop running instance of SmokePing (29687)

I'm using Smokeping.pm,v 1.4 and permissions shouldn't matter as this is
carried out as root.

TIA, Arnold

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