DNS

[steven Burgess_2]

Hi Everyone

Quick question,

Can anyone tell me how many DNS server RHES 3 update 4 supports ?

Ta

Steve

[Stuart Browne · Accepted solution]

Do you by chance mean "how many zones can BIND 9 under RHES 3u4 support?" ?

Usually a server will run a single DNS server with multiple zones being either primaried or secondaried.

That being said, a PIII or P4 single processor server running RHES3 and BIND 9 can support many hundreds domains without breaking a sweat.

I personally manage one running about 400 domains without issue.

[steven Burgess_2]

Hi Stuart

Sorry, should have been more specific, the question was simpler than that

How many DNS servers can I have in /etc/resolv.conf

Other sources suggest 3

Steve

[Alexander Chuzhoy]

as you can see in the attached link 3 entries supported:

http://publibn.boulder.ibm.com/doc_link/en_US/a_doc_lib/files/aixfiles/resolv.conf.htm

[steven Burgess_2]

ta

[Huc_1]

Well the man page say's look in resolv.h

grep MAXNS /usr/include/resolv.h

MAXNS should reveal this value

This is 3 this here fedora core 3

Hopr yhis is what you needed ?

Jean-Pierre Huc

[Steven E. Protter]

Three is the max.

I believe that's a Unix standard that Linux chose not to expand.

SEP

[Bejoy C Alias]

U can have a minimum of 1 and a maximum of 3 dns servers in ur resolv.conf file.
If u r registering a public domain it is suggested that You must have at least 2 nameservers (RFC2182 section 5 recommends at least 3 nameservers), and preferably no more than 7.