[Solved] Using pdnsd in conjunction with squid

nomorewindows · 2013-12-14 01:34:30

I have been using squid for the last couple of days because of a poor connection at the dsl. I also decided that possibly pdnsd would be a good measure to also speed things up a little. But when using pdnsd as a DNS server, squid doesn't always use the DNS records that pdnsd provides and results in messages from squid

ERROR

The requested URL could not be retrieved

The following error was encountered while trying to retrieve the URL: http://www.weather.com/news/weather-tornado/tornado-torcon-index

Unable to determine IP address from host name www.weather.com

The DNS server returned:

No DNS records
This means that the cache was not able to resolve the hostname presented in the URL. Check if the address is correct.

Your cache administrator is webmaster.

Doing a dig will sometimes return that the DNS server was pdnsd and other times it pulls it from the primary DNS server in the configuration file.

Last edited by nomorewindows (2013-12-17 20:58:48)

nomorewindows · 2013-12-15 13:29:11

Just to clarify, I am using pdnsd and squid on the same machine. It looks like adding

nameserver localhost

to /etc/resolv.conf may have allowed it to use the entries from pdnsd. It looks like I am getting more responses on squid that involve the IP address of the site, but the internet connection was down instead of it having to say that it couldn't look up the DNS even though it was available in the pdnsd cache.

Last edited by nomorewindows (2013-12-15 13:30:11)

loafer · 2013-12-15 17:29:20

I've got the same setup as you by the sound of it. My /etc/resolv.conf contains:

nameserver 127.0.0.1

nomorewindows · 2013-12-16 15:26:37

There is an option in there to use 127.0.0.1, but if you want to make it available to the rest of the network then it tells you to put eth0. Maybe I need 127.0.0.1, eth0 to make it work?

loafer · 2013-12-17 06:25:15

I haven't tried this but I'm guessing the format will be:

 server_ip = 127.0.0.1; 
server_ip = eth0;

nomorewindows · 2013-12-17 16:32:53

loafer wrote:

I haven't tried this but I'm guessing the format will be:
 server_ip = 127.0.0.1; 
server_ip = eth0;

I'm thinking it would be

 server_ip= 127.0.0.1,eth0;

but the documentation makes it seem like you are replacing 127.0.0.1 with eth0.

loafer · 2013-12-17 20:36:13

Here's what the man page for pdnsd.conf says about "server_ip=":

man pdnsd.conf wrote:

Presently you can only specify one address here; if you want pdnsd to listen on multiple interfaces but not all you will have to specify server_ip=any and use firewall rules to restrict access

Last edited by loafer (2013-12-17 20:37:31)

nomorewindows · 2013-12-17 20:58:25

loafer wrote:

Here's what the man page for pdnsd.conf says about "server_ip=":
man pdnsd.conf wrote:
Presently you can only specify one address here; if you want pdnsd to listen on multiple interfaces but not all you will have to specify server_ip=any and use firewall rules to restrict access

Doing a nmap localhost shows the port 53 to be closed, so maybe it doesn't use it at all. But doing a nmap from a proxy client shows it to be open. But there's another trick. We need to change the ip address in /etc/resolv.conf to be the ip addr of our proxy server. Then when we do that, it shows open. So nameserver localhost won't work. It has to be the ip address of the proxy server, although this seems redundant. Real confusion would result if you had multiple dns servers and were trying to configure it for redundancy. But the squid part of it can be configured on a heirarchy structure and for certain domains. I suspicioned about the nameserver localhost not working, so now I think with a little smarts, we have it solved.

Arch Linux

#1 2013-12-14 01:34:30

[Solved] Using pdnsd in conjunction with squid

#2 2013-12-15 13:29:11

Re: [Solved] Using pdnsd in conjunction with squid

#3 2013-12-15 17:29:20

Re: [Solved] Using pdnsd in conjunction with squid

#4 2013-12-16 15:26:37

Re: [Solved] Using pdnsd in conjunction with squid

#5 2013-12-17 06:25:15

Re: [Solved] Using pdnsd in conjunction with squid

#6 2013-12-17 16:32:53

Re: [Solved] Using pdnsd in conjunction with squid

#7 2013-12-17 20:36:13

Re: [Solved] Using pdnsd in conjunction with squid

#8 2013-12-17 20:58:25

Re: [Solved] Using pdnsd in conjunction with squid

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