DNS Server Response Time: Script & Templates

[wjm]

adrianmarsh,
I did run it from root.
Are you saying that you no longer get the 'ERROR: The POPEN timed out' in the log?
That is what I am still getting.

I agree with the open time for the script, (when this starts to work for me), I will change the switches to:
'-i 15' and '-d 5'
This will do three queries over 15 seconds. (I think)

[iYRe]

Hi,

When I use this script I get an error "partial response"

If I run it manually following the format within the .pl I get a dig of the zone scrolling past on the screen. Surely I should jsut get a summary? what is going on here?

I am also getting this:
ERROR: The POPEN timed out

[wilperi]

Hi

I run command via command line and also i have a endless loop. Should i only have 1 result.

-wilperi-

[TheGod]

I'm using the 0.8.6j version and i finally make this script work. i'm manually fix the command line in the xml template, to this

<input_string>perl /home/hosting/cpanel/cacti/scripts/dnsResponseTimeLoop.pl -s &lt;serveraddr&gt; -h &lt;hostname&gt; -t 5 -i 10 -r</input_string>, i'm manually change the TimeOut and Interval, some errors appears when the interval is less than 10 seconds.

In this case i chose 10 seconds, The graphs works now

Thanks for this script.

[weSh]

hi !

i'm using cacti 0.8.7 on debian etch...
i'm trying to use dnsResponseTime but i've got this answer :

ERROR: the RRD does not contain an RRA matching the chosen CF



all perl's moduls are installed, and when i test script manualy,

./dnsResponseTime.pl -h www.google.fr -s x.x.x.x -t 9 -i 10 -r -d 10
min:8 median:8 avg:8 max:8 iter:1

so, i don't understant what is wrong...

dnsResponseTime.pl is in /usr/local/cacti/scripts

and i manually fix the command line in the xml template

but always this response : ERROR: the RRD does not contain an RRA matching the chosen CF

An idea ?

Thx

weSh

[chavez243]

I like the script, took a bit of work to get it going 100%, but now it's ticking along. I edited the command a bit and I do not think it returns the most accurate numbers, but that is likely the fault of perl's net::DNS more than the script itself. Dig consistently returns lower numbers.

Unfortunately, I cannot be sure if the spikes I see in the graph are indicative of a real problem, or if it is just a glitch. I'm querying 2 local DNS servers, one BSD/Bind one W2K3. Bind minimums never fluctuate, it is always 9.00ms and MS is always 5.00ms

I have to treat is as more of a DNS weather vane, than a true tool. Regardless, it is handy.

[slech]

how to make it work on windows ?

[slech]

W32 DNS Statistics Perl Script using WMI

[renef]

Hey, anyone try to install this on 0.8.7b?

The perl script seems to work from the command prompt, I changed the path to the script, imported the .xml file but I get no graph data

From the command line, I get a result:
min:2 median:2 avg:2 max:103 iter:1844

in cacti, I debug the output and I get the following error:
ERROR: the RRD does not contain an RRA matching the chosen CF

I'd be more than happy to give cacti the correct RRA if I only knew where I can do that.

I've been trying to figure it out on my own for the past few hours with no luck. Hoping someone here has had better luck...

thanks,

RF

[h1d]

Anyone know how to fix this CF errors?

[dragossto]

put the script in scripts directory
install all dependency of this script
using perl v5.10.0 built for i486-linux-thread-multi
i put some thing wrong in this command

10x in advance

Command use:
perl dnsresponsetimeloop.pl -h google.ro -s 89.32.16.2 -r -i 5 -d 0 -t 100

Comand return:
Use of uninitialized value in addition (+) at dnsresponsetimeloop.pl line 139.
Use of uninitialized value in addition (+) at dnsresponsetimeloop.pl line 139.
Use of uninitialized value $result in division (/) at dnsresponsetimeloop.pl line 57.
Illegal division by zero at dnsresponsetimeloop.pl line 57.

[blmcmb]

I try to use the dnsresponse time, but i have this error:
ERROR: the RRD does not contain an RRA matching the chosen CF

The RRA:

Code: Select all

/usr/bin/rrdtool create \
/var/www/cacti/rra/dns-rec_max_273.rrd \
--step 300  \
DS:max:GAUGE:600:-10000:100000 \
DS:avg:GAUGE:600:-10000:100000 \
DS:median:GAUGE:600:-10000:100000 \
DS:min:GAUGE:600:-10000:100000 \
RRA:AVERAGE:0.5:1:500 \
RRA:AVERAGE:0.5:1:600 \
RRA:AVERAGE:0.5:6:700 \
RRA:AVERAGE:0.5:24:775 \
RRA:AVERAGE:0.5:288:797 \
RRA:MAX:0.5:1:500 \
RRA:MAX:0.5:1:600 \
RRA:MAX:0.5:6:700 \
RRA:MAX:0.5:24:775 \
RRA:MAX:0.5:288:797 \

The graph:

Code: Select all

/usr/bin/rrdtool graph - \
--imgformat=PNG \
--start=-86400 \
--end=-300 \
--title="DNS Response Time @Dns-Rec FQDN" \
--base=1000 \
--height=120 \
--width=500 \
--alt-autoscale \
--vertical-label="delay (ms)" \
--slope-mode \
--font TITLE:12: \
--font AXIS:8: \
--font LEGEND:10: \
--font UNIT:8: \
DEF:a="/var/www/cacti/rra/dns-rec_max_273.rrd":min:MIN \
DEF:b="/var/www/cacti/rra/dns-rec_max_273.rrd":median:AVERAGE \
DEF:c="/var/www/cacti/rra/dns-rec_max_273.rrd":avg:AVERAGE \
DEF:d="/var/www/cacti/rra/dns-rec_max_273.rrd":max:MAX \
LINE1:a#55D6D3FF:"minimum"  \
GPRINT:a:LAST:" last\:%8.2lf %s"  \
GPRINT:a:MIN:"min\:%8.2lf %s"  \
GPRINT:a:AVERAGE:"avg\:%8.2lf %s"  \
GPRINT:a:MAX:"max\:%8.2lf %s\n"  \
LINE1:b#F5F800FF:"median\:"  \
GPRINT:b:LAST:" last\:%8.2lf %s"  \
GPRINT:b:MIN:"min\:%8.2lf %s"  \
GPRINT:b:AVERAGE:"avg\:%8.2lf %s"  \
GPRINT:b:MAX:"max\:%8.2lf %s\n"  \
LINE1:c#EA8F00FF:"average\:"  \
GPRINT:c:LAST:"last\:%8.2lf %s"  \
GPRINT:c:MIN:"min\:%8.2lf %s"  \
GPRINT:c:AVERAGE:"avg\:%8.2lf %s"  \
GPRINT:c:MAX:"max\:%8.2lf %s\n"  \
LINE1:d#FF0000FF:"maximum\:"  \
GPRINT:d:LAST:"last\:%8.2lf %s"  \
GPRINT:d:MIN:"min\:%8.2lf %s"  \
GPRINT:d:AVERAGE:"avg\:%8.2lf %s"  \
GPRINT:d:MAX:"max\:%8.2lf %s\n" 

RRDTool Says:

ERROR: the RRD does not contain an RRA matching the chosen CF

How can i fix it?

[camarao]

Hi!

I have a problem to make the graphs work. I imported the XML and set the path of perl script. When I generate the graphs, I receive this message:

Code: Select all

/usr/bin/rrdtool graph - \
--imgformat=PNG \
--start=-86400 \
--end=-300 \
--title="DNS Response Time @Servidor DNS1 FQDN" \
--base=1000 \
--height=120 \
--width=500 \
--alt-autoscale-min \
--upper-limit=10000 \
--vertical-label="delay (ms)" \
--slope-mode \
--font TITLE:12: \
--font AXIS:8: \
--font LEGEND:10: \
--font UNIT:8: \
LINE1:#55D6D3FF:"minimum\:"  \
GPRINT::LAST:"last\:%8.2lf %s"  \
GPRINT::MIN:"min\:%8.2lf %s"  \
GPRINT::AVERAGE:"avg\:%8.2lf %s"  \
GPRINT::MAX:"max\:%8.2lf %s\n"  \
LINE1:#F5F800FF:"median\:"  \
GPRINT::LAST:" last\:%8.2lf %s"  \
GPRINT::MIN:"min\:%8.2lf %s"  \
GPRINT::AVERAGE:"avg\:%8.2lf %s"  \
GPRINT::MAX:"max\:%8.2lf %s\n"  \
LINE1:#EA8F00FF:"average\:"  \
GPRINT::LAST:"last\:%8.2lf %s"  \
GPRINT::MIN:"min\:%8.2lf %s"  \
GPRINT::AVERAGE:"avg\:%8.2lf %s"  \
GPRINT::MAX:"max\:%8.2lf %s\n"  \
LINE1:#FF0000FF:"maximum\:"  \
GPRINT::LAST:"last\:%8.2lf %s"  \
GPRINT::MIN:"min\:%8.2lf %s"  \
GPRINT::AVERAGE:"avg\:%8.2lf %s"  \
GPRINT::MAX:"max\:%8.2lf %s\n" 

RRDTool Says:

ERROR: parameter '#55D6D3FF' does not represent a number in line LINE1:#55D6D3FF:minimum\:

Somebody help me, please! I looked for the answers on Google, but without success.

[camarao]

Hey, guys! I found a solution here!

For the message: ERROR: the RRD does not contain an RRA matching the chosen CF, you have to enter on Data Source > RRA's, select each option and, inside of each option, select (with Ctrl) the rest of CF's (Consolidation Function). Do this to the rest of options.
For my doubt, I forgot to insert new Data Source for the new template!

Now, I have another problem: all of my results has a "nan". I don't get it where i wrong!

[nuzzy]

I'm seeing this:

10/10/2010 10:35:52 PM - SPINE: Poller[0] Host[161] ERROR: The NIFTY POPEN timed out

How can this be corrected?