DNS Cache

felix001 · 08-06-2010, 10:17 AM

When using the dns client in Solaris is DNS caching enabled/disabled by default ?
Is there anyway to enable it if not, and also is there a way when it is enabled to vew the DNS cache ?

jlliagre · 08-06-2010, 11:47 AM

There is no specific DNS cache but a generic name service one, nscd. It is enabled by default. You can get statistics with "nscd -g" but I don't recall there is a documented way to retrieve its content.

felix001 · 08-08-2010, 04:11 PM

Do you know what the equivlant is on in Linux ?

jlliagre · 08-09-2010, 02:06 AM

That would be ... nscd. Linux is nevertheless a Unix clone.

felix001 · 08-09-2010, 03:31 AM

Are you sure Ive checked a debian and centos server and both do not have it by default. I imagine you could install it but I would of thouugh there would of been a DNS caching process installed by default.

jlliagre · 08-09-2010, 03:42 AM

I understood your question not to be if Gnu/Linux distributions have it installed by default but for a Solaris nscd equivalent on Linux.
With the latter, there could be other mechanism to provide name caching, a quick google search shows dnscache as a contender.

felix001 · 08-09-2010, 04:34 AM

Ok, what i meant is what is the method on Linux (Centos, Redhat etc etc) for DNS caching...?

jlliagre · 08-09-2010, 06:11 AM

The method with these distributions is nscd, although not enabled by default.