PowerDNS Recursor Templates [updated 29/7/09]

[Howie]

Here are a couple of graph templates for the PowerDNS recursor. They need a shell script to be installed on the DNS server, and an net-snmp config change.

Add the following to the snmpd.conf

Code: Select all

extend pdns-rec /usr/local/bin/pdns_stats

Put pdns_stats in /usr/local/bin, so that snmpd can find it (rename from pdns_stats.txt). Make it executable.

Then import the templates.

You end up with two graphs - one showing queries/sec + cache efficiency, and another one showing "exceptions" - slow queries, resource limits hit, spoof detection, etc.

Update
I've uploaded a newer version of pdns_stats.txt which collects a few more statistics. You can use the existing templates with the new script, but the new version also allows you to use a couple more templates, which I've attached below. These are 'Performance' which shows the proportion of queries answered in particular time bands, and 'Concurrency' which shows the number of threads running.

[Howie]

Some images from my testing.

Edit: Added the two new templates.

[julian924s]

Sweet - any chance of some templates / scripts for the authoritative part of powerdns?

Thanks - J.

[Howie]

Sweet - any chance of some templates / scripts for the authoritative part of powerdns?

Thanks - J.

I don't use that (yet). It'd be the same basic idea though, except with pdns_control instead of rec_control.

[xseries]

Maybe I'm wrong; but the statistics pulled from the recursor aren't reset so the lines are only going up ?

[Howie]

Maybe I'm wrong; but the statistics pulled from the recursor aren't reset so the lines are only going up ?

You mean apart from the parts in the graph above that are clearly going down?

No, the numbers from rec_control go up, but that's what the COUNTER type in Cacti/rrdtool is for.

[xseries]

Ah; ok; thanx !

But; before I can use it; i'll need to upgrade from 0.8.7b

[Howie]

Yes, you will. I can't export from any other version that 0.8.7d, because that's what I am using...

Just added a couple more graph templates to the original post, too.

[xseries]

I;ve upgrade my cacti to most recent version; but there seems to be a problemen regarding snmpd :

ns0:/etc/snmp# snmpwalk -v2c -cpublic xxx.xxx.xxx.xxx pdns-rec
pdns-rec: Unknown Object Identifier (Sub-id not found: (top) -> pdns-rec)
ns0:/etc/snmp#

I've edited snmpd.conf and restarted it...
What's going wrong here ?

[Howie]

I;ve upgrade my cacti to most recent version; but there seems to be a problemen regarding snmpd :

ns0:/etc/snmp# snmpwalk -v2c -cpublic xxx.xxx.xxx.xxx pdns-rec
pdns-rec: Unknown Object Identifier (Sub-id not found: (top) -> pdns-rec)
ns0:/etc/snmp#

I've edited snmpd.conf and restarted it...
What's going wrong here ?

That's not the OID. Try walking .1.3.6.1.4.1.8072.1.3.2.4.1.2

[xseries]

@Howie
After a upgrade to the latest cacti; changing some rights on files and directories and some more troubleshooting it's working

Thanks !

[tomasz.wostal]

@Howie
After a upgrade to the latest cacti; changing some rights on files and directories and some more troubleshooting it's working

Thanks !

I have the same error. What have you done that worked?

[Howie]

@Howie
After a upgrade to the latest cacti; changing some rights on files and directories and some more troubleshooting it's working

Thanks !

I have the same error. What have you done that worked?

The error xseries had was using the wrong OID as far as I can see...

[tomasz.wostal]

The error xseries had was using the wrong OID as far as I can see...

I was walking this OID .1.3.6.1.4.1.8072.1.3.2.4.1.2. I will check my configuration one again

[Amosery]

Hello,

for the authoritative part of powerdns, you can't use pdns_control.
But, the Init-Script provide functionality for mrtg that you can use.

example: /etc/init.d/pdns mrtg udp-queries udp-answers

See pdns-Manual http://doc.powerdns.com/init-d-commands.html

And, sorry for my bad english

Bye Amosery