topic Use a caching name server on HP-UX 11.0 in Operating System - HP-UX

Use a caching name server on HP-UX 11.0

Johan Barelds — Mon, 08 Dec 2003 13:28:41 GMT

Hi all,

I am trying to configure a caching name server.
I started to do it with SAM.
As soon as i change my /etc/resolv.conf to something like this:
----
domain aloha.com
nameserver 127.0.0.1
----
I can resolv any hostnames anymore.
my nsswitch.conf has the following entry:
----
hosts: files dns
----

As soon as i put the internal DNS (with whom i configured my caching DNS) in the /etc/resolv.conf instead of the 127.0.0.1 i can do resolving again.

Anyone any clues?
Thanks in advance!

Grz. Johan

Re: Use a caching name server on HP-UX 11.0

Karthik S S — Mon, 08 Dec 2003 13:45:06 GMT

Instead of giving 127.0.0.1 in the resolv.conf try giving the IP address of the system itself (i.e IP of the cache-DNS server).

Also try doing a "telnet IP_Cache_DNS 53" to see if the service is running.

-Karthik S S

Re: Use a caching name server on HP-UX 11.0

Geoff Wild — Mon, 08 Dec 2003 13:49:46 GMT

Just add the ip of the internal DNS on the next line of resolv.conf

Also, do you have a forwarders statment in named.conf?

options {
directory "/etc/namedb";
forwarders {
192.168.2.100; // dns server1
192.168.2.101; // dns server2
192.158.9.100; // dns server3
};
forward only; // while in transition
};

Rgds...Geoff

Re: Use a caching name server on HP-UX 11.0

Johan Barelds — Mon, 08 Dec 2003 14:06:53 GMT

If i use "localhost 127.0.0.1" in my resolv.conf i get something like:--#nslookup www.ad.nlUsing /etc/hosts on: untrsp03looking up FILESTrying DNS--If i change 127.0.0.1 to the real ipadress is hangs right away (not showing the FILES lookup anymore).It looks that that's not the solution to me. Telnetting to port 53 works fine though in both situations.Geoff:I don't have named.conf ?!!--#ls -al /etc/named*lr-xr--r-T 1 root sys 15 May 13 2003 /etc/named -> /usr/sbin/namedlr-xr-xr-t 1 root sys 20 May 13 2003 /etc/named-xfer -> /usr/sbin/named-xfer-rw-r--r-- 1 root sys 111 Sep 4 20:40 /etc/named.boot-rw-r--r-- 1 root sys 58 Sep 4 20:04 /etc/named.boot.bak-rw-r--r-- 1 root sys 113 Sep 4 19:36 /etc/named.boot.old/etc/named.data:total 20drwxr-xr-x 2 root sys 1024 Sep 4 20:04 .dr-xr-xr-x 29 bin bin 6144 Dec 8 19:21 ..-rw-r--r-- 1 root sys 485 May 25 2003 db.127.0.0-rw-r--r-- 1 root sys 1414 Sep 4 19:54 db.cache----Do you mean perhaps the files in /etc/named.data??Thanks again for your replies.Grz. Johan

Re: Use a caching name server on HP-UX 11.0

Geoff Wild — Mon, 08 Dec 2003 16:49:04 GMT

Barelds - you have a named.boot - that means you are running an old Bind - 4.X - I suggest you upgrade ASAP....

in your named.boot - add a line like:

forwarders 192.168.2.100 192.168.2.101

Of course, put in the ip's of your DNS servers...

Rgds...Geoff