Trying to configure DNS using BIND package in Oracle Linux 6.6
Version: Oracle Linux 6.6
I am trying to set up DNS for forward and reverse lookups. I am new to BIND package.
I have installed the following packages.
bind (includes DNS server, named)
bind-utils (utilities for querying DNS servers about host information)
bind-libs (libraries used by the bind server and utils package)
The domain I am trying to configure : openhex.com
DNS Server IP : 10.194.135.185
This is for Oracle RAC cluster build.
I want the hostname rac-scan.openhex.com to resolve to the following 3 IPs . This is for the SCAN functionality in Oracle RAC
10.194.135.82
10.194.135.83
10.194.135.84
Following are the 3 configuration files I am using
[root@oem12cdns185 etc]# cat /etc/named.conf
options {
listen-on port 53 {127.0.0.1; 10.194.135.185; };
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";
allow-query { 127.0.0.1; 10.194.135.185; };
recursion yes;
dnssec-enable yes;
dnssec-validation yes;
dnssec-lookaside auto;
/* Path to ISC DLV key */
bindkeys-file "/etc/named.iscdlv.key";
managed-keys-directory "/var/named/dynamic";
};
zone "openhex.com" IN {
type master;
file "openhex.com.zone";
allow-update { none; };
};
zone "135.194.10.in-addr.arpa." IN {
type master;
file "135.194.10.in-addr.arpa";
allow-update { none; };
};
### 2. forward zone file
### /var/named/openhex.com.zone
Code:
[root@oem12cdns185 etc]# cat /var/named/openhex.com.zone
$TTL 86400
@ IN SOA localhost root.localhost (
42 ; serial (d. adams)
3H ; refresh
15M ; retry
1W ; expiry
1D ) ; minimum
IN NS localhost
localhost IN A 127.0.0.1
pravda178-oravip.openhex.com IN A 10.194.135.217
pravda179-oravip.openhex.com IN A 10.194.135.218
rac-scan.openhex.com IN A 10.194.135.82
rac-scan.openhex.com IN A 10.194.135.83
rac-scan.openhex.com IN A 10.194.135.84
### 3. reverse zone file
####/var/named/135.194.10.in-addr.arpa
Code:
[root@oem12cdns185 etc]# cat /var/named/135.194.10.in-addr.arpa
$ORIGIN 135.194.10.in-addr.arpa.
$TTL 1H
@ IN SOA openhex.com. root.openhex.com. ( 2
3H
1H
1W
1H )
35.194.10.in-addr.arpa. IN NS openhex.com.
217 IN PTR pravda178-oravip.openhex.com.
218 IN PTR pravda179-oravip.openhex.com.
82 IN PTR rac-scan.openhex.com.
83 IN PTR rac-scan.openhex.com.
84 IN PTR rac-scan.openhex.com.
When I try to start the named service, I get the following error which seems to be related to reverse zone file:
Code:
[root@oem12cdns185 etc]# service named start
Starting named:
Error in named configuration:
zone openhex.com/IN: loaded serial 42
135.194.10.in-addr.arpa:8: ignoring out-of-zone data (35.194.10.in-addr.arpa)
zone 135.194.10.in-addr.arpa/IN: has no NS records
zone 135.194.10.in-addr.arpa/IN: not loaded due to errors.
_default/135.194.10.in-addr.arpa./IN: bad zone
[FAILED]
[root@oem12cdns185 etc]#
Output of named-checkconf and named-checkzone utilties
Code:
[root@oem12cdns185 etc]# named-checkconf /etc/named.conf
[root@oem12cdns185 etc]#
[root@oem12cdns185 etc]#
[root@oem12cdns185 etc]# named-checkzone openhex.com /var/named/135.194.10.in-addr.arpa
/var/named/135.194.10.in-addr.arpa:3: ignoring out-of-zone data (135.194.10.in-addr.arpa)
/var/named/135.194.10.in-addr.arpa:8: ignoring out-of-zone data (35.194.10.in-addr.arpa)
/var/named/135.194.10.in-addr.arpa:9: ignoring out-of-zone data (217.135.194.10.in-addr.arpa)
/var/named/135.194.10.in-addr.arpa:10: ignoring out-of-zone data (218.135.194.10.in-addr.arpa)
/var/named/135.194.10.in-addr.arpa:11: ignoring out-of-zone data (82.135.194.10.in-addr.arpa)
/var/named/135.194.10.in-addr.arpa:12: ignoring out-of-zone data (83.135.194.10.in-addr.arpa)
/var/named/135.194.10.in-addr.arpa:13: ignoring out-of-zone data (84.135.194.10.in-addr.arpa)
zone openhex.com/IN: has 0 SOA records
zone openhex.com/IN: has no NS records
zone openhex.com/IN: not loaded due to errors.
[root@oem12cdns185 etc]#
[root@oem12cdns185 etc]# named-checkzone openhex.com /var/named/openhex.com.zone
zone openhex.com/IN: loaded serial 42
OK
[root@oem12cdns185 etc]#
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