On 5/18/05, Marc Powell <marc at ena.com> wrote: > > > > -----Original Message----- > > From: centos-bounces at centos.org [mailto:centos-bounces at centos.org] On > > Behalf Of Lee Parmeter > > Sent: Tuesday, May 17, 2005 11:48 AM > > To: centos at centos.org > > Subject: [CentOS] named server > > > > I started the named server on CentOS and it seems to > > resolve DNS request OK, but it does not seem to retain the > > info for very long. From what I can tell using "dig", a > > domain's ip address is retained for less than 12 hours. So > > in the morning, it takes 4+ seconds to resolve again the > > first time. Is there an adjustment somewhere for this or is > > the caching named support not enabled by default? > > Bind will use the Time To Live as configured by the owner of the domain > name. There are other proxy DNS applications that allow you to override > those values but I do not believe you can do so with bind. > > > Also, I thought it would be faster if I set named to use my > > ISP's named server as the first choice. Where do I set this > > up, in root.hints? > > http://64.233.187.104/search?q=cache:OFlpPzQRRcUJ:www.rhce2b.com/clublin > ux/RHCE-19.shtml+bind+forwarders&hl=en > > 19.3 Caching Only Name Servers > > 1. Not authoritative for any zone. > > 2. Uses DNS root servers or another name server known as a forwarder > to resolve DNS queries. > > 3. To create a Forwarding Name Server, put the following line in the > "options" section of the /etc/named.conf file: > > forwarders { 192.168.1.20; }; # replace with your upstream nameserver > > 4. If you want BIND to only use it's forwarders to resolve hosts and > not the root name servers, put the following line in the "options" > section of the /etc/named.conf file: > > forward only; > > The "forwarders" option specifies which DNS or DNS servers queries > should be forwarded to for resolution. > What is the difference between use forward only+forwarders and directly set the nameserver inside resolv.conf ? > > Anyone who knows more about "named" please feel free to > > comment! > > Google knows a lot. =) > > -- > Marc > _______________________________________________ > CentOS mailing list > CentOS at centos.org > http://lists.centos.org/mailman/listinfo/centos >