Creating a DNS Server on Oracle Linux 5.8 64 bit

Question

Hi Guys,
I am creating a DNS host setup to resolve the SCAN IPs used in Oracle 11g R2 RAC. The Idea is to resolve 3 IP addres in a round robin fashion.
I am not a hard core linux admin just a DBA.
Please help me get a pointer to troubleshoot this issue.
ovmdnsbox is my DNS HOST going to be used by clusterhost1 and clusterhost2. Want to configure sangramkeshari.net as my domain.
ON ovmdnsbox
=====================
added entry in /etc/named.conf
zone "sangramkeshari.net" IN {
type master;
file "sangramkeshari.net.zone";
allow-update { none; };
zone "56.168.192.in-addr.arpa" in {
type master;
file "56.168.192.in-addr.arpa.zone";
[root@ovmdnsbox named]# pwd
/var/named
[root@ovmdnsbox named]# cat sangramkeshari.net.zone
$TTL 86400
@ IN SOA sangramkeshari.net. sangramkeshari.net. (
42 ; serial (d. adams)
3H ; refresh
15M ; retry
1W ; expiry
1D ) ; minimum
IN NS localhost
localhost IN A 127.0.0.1
clusterhost-x-scan IN A 192.168.56.131
clusterhost-x-scan IN A 192.168.56.132
clusterhost-x-scan IN A 192.168.56.133
[root@ovmdnsbox named]# cat 56.168.192.in-addr.arpa
$ORIGIN 56.168.192.in-addr.arpa.
$TTL 1H
@ IN SOA sangramkeshari.net. root.sangramkeshari.net. ( 2
3H
1H
1W
1H )
56.168.192.in-addr.arpa. IN NS sangramkeshari.net.
131 IN PTR clusterhost-x-scan.sangramkeshari.net.
132 IN PTR clusterhost-x-scan.sangramkeshari.net.
133 IN PTR clusterhost-x-scan.sangramkeshari.net.
[root@ovmdnsbox named]# service named start
Starting named:
Error in named configuration:
zone localdomain/IN: loaded serial 42
zone localhost/IN: loaded serial 42
zone 0.0.127.in-addr.arpa/IN: loaded serial 1997022700
zone 0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.ip6.arpa/IN: loaded serial 1997022700
zone 255.in-addr.arpa/IN: loaded serial 42
zone 0.in-addr.arpa/IN: loaded serial 42
my.internal.zone.db:1: no TTL specified; using SOA MINTTL instead
zone my.internal.zone/IN: loaded serial 1
slaves/my.ddns.internal.zone.db:1: no TTL specified; using SOA MINTTL instead
zone my.ddns.internal.zone/IN: loaded serial 1
zone sangramkeshari.net/IN: loaded serial 42
zone 56.168.192.in-addr.arpa/IN: loading master file 56.168.192.in-addr.arpa.zone: file not found
internal/56.168.192.in-addr.arpa/in: file not found
my.external.zone.db:1: no TTL specified; using SOA MINTTL instead
zone my.external.zone/IN: loaded serial 1
[FAILED]

Answer 1

SangramKeshariDash wrote:
Hi Guys,
I am creating a DNS host setup to resolve the SCAN IPs used in Oracle 11g R2 RAC. The Idea is to resolve 3 IP addres in a round robin fashion.
I am not a hard core linux admin just a DBA.
Please help me get a pointer to troubleshoot this issue.
ovmdnsbox is my DNS HOST going to be used by clusterhost1 and clusterhost2. Want to configure sangramkeshari.net as my domain.
ON ovmdnsbox
=====================
added entry in /etc/named.conf
zone "sangramkeshari.net" IN {
type master;
file "sangramkeshari.net.zone";
allow-update { none; };
zone "56.168.192.in-addr.arpa" in {
type master;Note filename below:
file "56.168.192.in-addr.arpa.zone";
[root@ovmdnsbox named]# pwd
/var/named
[root@ovmdnsbox named]# cat sangramkeshari.net.zone
$TTL 86400
@ IN SOA sangramkeshari.net. sangramkeshari.net. (
42 ; serial (d. adams)
3H ; refresh
15M ; retry
1W ; expiry
1D ) ; minimum
IN NS localhost
localhost IN A 127.0.0.1
clusterhost-x-scan IN A 192.168.56.131
clusterhost-x-scan IN A 192.168.56.132
clusterhost-x-scan IN A 192.168.56.133
Note filename here:
[root@ovmdnsbox named]# cat 56.168.192.in-addr.arpa
$ORIGIN 56.168.192.in-addr.arpa.
$TTL 1H
@ IN SOA sangramkeshari.net. root.sangramkeshari.net. ( 2
3H
1H
1W
1H )
56.168.192.in-addr.arpa. IN NS sangramkeshari.net.
131 IN PTR clusterhost-x-scan.sangramkeshari.net.
132 IN PTR clusterhost-x-scan.sangramkeshari.net.
133 IN PTR clusterhost-x-scan.sangramkeshari.net.
[root@ovmdnsbox named]# service named start
Starting named:
Error in named configuration:
zone localdomain/IN: loaded serial 42
zone localhost/IN: loaded serial 42
zone 0.0.127.in-addr.arpa/IN: loaded serial 1997022700
zone 0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.ip6.arpa/IN: loaded serial 1997022700
zone 255.in-addr.arpa/IN: loaded serial 42
zone 0.in-addr.arpa/IN: loaded serial 42
my.internal.zone.db:1: no TTL specified; using SOA MINTTL instead
zone my.internal.zone/IN: loaded serial 1
slaves/my.ddns.internal.zone.db:1: no TTL specified; using SOA MINTTL instead
zone my.ddns.internal.zone/IN: loaded serial 1
zone sangramkeshari.net/IN: loaded serial 42Note error message here:
zone 56.168.192.in-addr.arpa/IN: loading master file 56.168.192.in-addr.arpa.zone: file not found
internal/56.168.192.in-addr.arpa/in: file not found
my.external.zone.db:1: no TTL specified; using SOA MINTTL instead
zone my.external.zone/IN: loaded serial 1
[FAILED]