Hello,
I've installed a GI with 12cR2 using GNS, the cluster is up and running, however I'm having problems to resolve the scan, and after change several times the DNS configuration , I can not get it to work.
This is the installation screen:
Let me show first the scan configuration:
$ srvctl config scan
SCAN name: rac-scan.cluster01.gns.oracle.com, Network: 1
Subnet IPv4: 172.68.1.0/255.255.255.0/eth2, dhcp
Subnet IPv6:
SCAN 1 IPv4 VIP: -/scan1-vip/172.68.1.172
SCAN VIP is enabled.
SCAN VIP is individually enabled on nodes:
SCAN VIP is individually disabled on nodes:
SCAN 2 IPv4 VIP: -/scan2-vip/172.68.1.174
SCAN VIP is enabled.
SCAN VIP is individually enabled on nodes:
SCAN VIP is individually disabled on nodes:
SCAN 3 IPv4 VIP: -/scan3-vip/172.68.1.173
SCAN VIP is enabled.
SCAN VIP is individually enabled on nodes:
SCAN VIP is individually disabled on nodes:
Now, I show you the DNS configuration. I've another Linux box to set as DHCP/DNS.
The first file o change is /etc/named.conf :
..
Where I defined the zones:
zone "oracle.com" IN {
type master;
file "oracle.com.zone";
allow-update { none; };
};
zone "1.68.172.in-addr.arpa" {
type master;
file "1.68.172.in-addr.arpa";
};
And in the /var/named is the files zones:
oracle.com.zone (file)contains:
$TTL 86400
@ IN SOA dhcp root.dhcp.oracle.com (
42 ; serial
3H ; refresh
15M ; retry
1W ; expiry
1D ) ; minimum
IN NS dhcp.oracle.com
dhcp.oracle.com IN A 172.68.1.5
rac1.oracle.com IN A 172.68.1.11
rac2.oracle.com IN A 172.68.1.12
rac3.oracle.com IN A 172.68.1.13
$ORIGIN gns.oracle.com.
@ IN NS gns-srv.gns.oracle.com.
gns-srv.gns.oracle.com. IN A 172.68.1.235
$TTL 1H
@ IN SOA dhcp.oracle.com. root.localhost (
2 ; serial
3H ; refresh
1H ; retry
1W ; expire
1H ; ttk
)
@ IN NS dhcp.oracle.com.
5 IN PTR dhcp.oracle.com.
11 IN PTR rac1.oracle.com.
12 IN PTR rac2.oracle.com.
13 IN PTR rac3.oracle.com.
235 IN PTR gns-srv.gns.oracle.com.
If I try :
[root@dhcp named]# nslookup rac-scan.cluster01.gns.oracle.com
Server: 172.68.1.5
Address: 172.68.1.5#53
** server can't find rac-scan.cluster01.gns.oracle.com: NXDOMAIN
However, the GNS server is up:
[root@dhcp named]# ping 172.68.1.235
PING 172.68.1.235 (172.68.1.235) 56(84) bytes of data.
64 bytes from 172.68.1.235: icmp_seq=1 ttl=64 time=0.594 ms
64 bytes from 172.68.1.235: icmp_seq=2 ttl=64 time=0.596 ms
And the file 1.68.172.in-addr.arpa:
Do you know why the resolution of the scan does not work?
Am I forgetting or doing something wrong?
Many Thanks
Arturo