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03-17-2011, 03:25 PM
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#1
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LQ Newbie
Registered: Feb 2011
Posts: 10
Rep: 
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I have a problem to setup bind dns server
Hello
I have a problem to setup bind dns server
I have a system centos 5.5
[root@server etc]# cat named.conf
PHP Code:
//
// named.caching-nameserver.conf
//
// Provided by Red Hat caching-nameserver package to configure the
// ISC BIND named(8) DNS server as a caching only nameserver
// (as a localhost DNS resolver only).
//
// See /usr/share/doc/bind*/sample/ for example named configuration files.
//
// DO NOT EDIT THIS FILE - use system-config-bind or an editor
// to create named.conf - edits to this file will be lost on
// caching-nameserver package upgrade.
//
options {
listen-on port 53 { 216.245.218.168; };
listen-on-v6 port 53 { ::1; };
directory "/var/named";
dump-file "/var/named/data/cache_dump.db";
statistics-file "/var/named/data/named_stats.txt";
memstatistics-file "/var/named/data/named_mem_stats.txt";
query-source port 53;
query-source-v6 port 53;
allow-query { 216.245.218.168; };
};
zone "r7l.org" IN {
type master;
file "r7l.org.forward";
allow-update { none; };
};
zone "218.245.216.in-addr.arpa" IN {
type master;
file "r7l.org.reverse";
allow-update { none; };
};
[root@server named]# cat r7l.org.forward
PHP Code:
$TTL 86400
@ IN SOA @ root (
42 ; serial (d. adams)
3H ; refresh
15M ; retry
1W ; expiry
1D ) ; minimum
IN NS @
IN A 216.245.218.168
IN AAAA ::1
[root@server named]# cat r7l.org.reverse
PHP Code:
$TTL 86400
@ IN SOA r7l.org. root.r7l.org. (
1997022700 ; Serial
28800 ; Refresh
14400 ; Retry
3600000 ; Expire
86400 ) ; Minimum
IN NS r7l.org.
168 IN PTR r7l.org.
PHP Code:
[root@server named]# nslookup 216.245.218.168
Server: 216.245.218.168
Address: 216.245.218.168#53
168.218.245.216.in-addr.arpa name = r7l.org.
[root@server named]# nslookup r7l.org
Server: 216.245.218.168
Address: 216.245.218.168#53
Name: r7l.org
Address: 216.245.218.168
Do not do Domain
www.r7l.org
http://www.intodns.com/r7l.org
Please help |
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03-17-2011, 03:44 PM
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#2
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LQ Guru
Registered: Jun 2004
Location: Piraeus
Distribution: Slackware
Posts: 13,217
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Hi,
If you want to resolve www.r7l.org you need an A or CNAME record for it. E.g.
Code:
www IN A 216.245.218.168
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03-17-2011, 03:45 PM
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#3
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Member
Registered: Feb 2011
Distribution: CentOS, Ubuntu
Posts: 97
Rep: 
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Looks like you need A and PTR records for www, ns1, and ns2.
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03-17-2011, 05:18 PM
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#4
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LQ Newbie
Registered: Feb 2011
Posts: 10
Original Poster
Rep:
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Quote:
Hi,
Quote:
Do not do Domain
www.r7l.org
If you want to resolve www.r7l.org you need an A or CNAME record for it. E.g.
Code:
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how to setting CNAME record
where to put
Quote:
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Looks like you need A and PTR records for www, ns1, and ns2.
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how to setting PTR records |
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03-17-2011, 06:41 PM
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#5
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LQ Guru
Registered: Jun 2004
Location: Piraeus
Distribution: Slackware
Posts: 13,217
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Quote:
www IN A 216.245.218.168
where to put
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You add the A record in r7l.org.forward, increase the serial in the same file and reload bind |
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03-18-2011, 11:24 AM
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#6
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Member
Registered: Feb 2011
Distribution: CentOS, Ubuntu
Posts: 97
Rep:
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Quote:
Originally Posted by dr-php
how to setting PTR records
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If www is 216.245.218.168 then all you need is a CNAME record.
You already have a PTR record for this IP address.
However, if www is on another server, like 216.245.218.169 for example, then you'd add a line to the file r7l.org.reverse:
Code:
168 IN PTR r7l.org.
169 IN PTR www.r7l.org.
Remember to increment your serial number and restart named. |
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03-18-2011, 02:57 PM
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#7
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LQ Newbie
Registered: Feb 2011
Posts: 10
Original Poster
Rep:
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cat r7l.org.forward
$TTL 86400
@ IN SOA @ root (
42 ; serial (d. adams)
3H ; refresh
15M ; retry
1W ; expiry
1D ) ; minimum
IN NS @
IN A 216.245.218.168
IN AAAA ::1
www IN A 216.245.218.168
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03-18-2011, 02:58 PM
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#8
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LQ Newbie
Registered: Feb 2011
Posts: 10
Original Poster
Rep:
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cat r7l.org.forward
PHP Code:
$TTL 86400
@ IN SOA @ root (
42 ; serial (d. adams)
3H ; refresh
15M ; retry
1W ; expiry
1D ) ; minimum
IN NS @
IN A 216.245.218.168
IN AAAA ::1
www IN A 216.245.218.168
cat r7l.org.reverse
PHP Code:
$TTL 86400
@ IN SOA r7l.org. root.r7l.org. (
1997022700 ; Serial
28800 ; Refresh
14400 ; Retry
3600000 ; Expire
86400 ) ; Minimum
IN NS r7l.org.
168 IN PTR r7l.org.
168 IN PTR www.r7l.org.
Do not do Domain
www.r7l.org
Last edited by dr-php; 03-18-2011 at 03:01 PM.
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03-18-2011, 04:12 PM
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#9
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Member
Registered: Feb 2011
Distribution: CentOS, Ubuntu
Posts: 97
Rep:
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You can't have two A records like that; if you're using the same IP for two entries, one has to be an "alias" CNAME record and one has to be the "real" A record. You don't show your ORIGIN record, so assuming it's fubar.org:
Code:
$ORIGIN fubar.com.
$TTL 86400
@ IN SOA @ root (
42 ; serial (d. adams)
3H ; refresh
15M ; retry
1W ; expiry
1D ) ; minimum
@ IN NS ns1
@ IN NS ns2
fubar IN A 216.245.218.168
IN AAAA ::1
www IN CNAME fubar.com.
ns1 IN CNAME fubar.com.
ns2 IN CNAME fubar.com.
I also added the entries for ns1 and ns2, because the intodns link you posted was complaining about them.
You already have a PTR record for 216.245.218.168 so you don't need two; you can delete the PTR record for www. You only need PTR records for A records. DNS is smart enough to trace a CNAME record to its A record and use that PTR record. |
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03-18-2011, 05:15 PM
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#10
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LQ Guru
Registered: Jun 2004
Location: Piraeus
Distribution: Slackware
Posts: 13,217
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@lrtward
Quote:
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You can't have two A records like that; if you're using the same IP for two entries, one has to be an "alias" CNAME record and one has to be the "real" A record. Y
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Says who? You can have as many A records you want pointing to the same IP. And it's better to use A instead of CNAME RRs, because you save one lookup.
@dr-php
Code:
cat r7l.org.forward
PHP Code:
$TTL 86400
@ IN SOA @ root (
42 ; serial (d. adams)
3H ; refresh
15M ; retry
1W ; expiry
1D ) ; minimum
IN NS @
IN A 216.245.218.168
IN AAAA ::1
www IN A 216.245.218.168
You didn't increase the serial (the number 42 in red). Make it 43 and reload bind |
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