Oracle 11g rac SCAN功能DNS部分配置示例
很多人在安装Oracle11g RAC过程中对其中的SCAN的DNS配置部分感到困惑，本文详细记录了在11g版本的RAC环境下SCAN的DNS配置方案。
注意：本过程已在项目过程中的实际系统环境下验证
配置文件共有4个
1、正向解析文件—->db.cyszys.com
2、反向解析文件—->db.15.168.192
3、根服务器描述文件—->named.ca
4、Bind服务器配置文件—->named.conf
/etc/hosts 配置内容：
################db.cyszys.com##################### 192.168.15.101 ora01 192.168.15.102 ora02 192.168.15.201 ora01-vip 192.168.15.202 ora02-vip 192.168.1.101 ora01-priv 192.168.1.102 ora02-priv ################db.cyszys.com#####################
db.cyszys.com 文件配置：
################db.cyszys.com#####################
$ttl 38400
cyszys.com. IN SOA cyszys.com. root.cyszys.com.(
2012110303
10800
3600
604800
38400)
IN NS ns1.cyszys.com
IN NS ns2.cyszys.com
ns1 IN A 192.168.15.13
ns2 IN A 192.168.15.14
ora01 IN A 192.168.15.101
ora02 IN A 192.168.15.102
scan IN A 192.168.15.211
scan IN A 192.168.15.212
scan IN A 192.168.15.213
ora01-vip IN A 192.168.15.201
ora02-vip IN A 192.168.15.202
################db.cyszys.com#####################
db.15.168.192 文件配置：
################db.15.168.192#####################
$ttl 38400
15.168.192.in-addr.arpa. IN SOA ns.cyszys.com. root.cyszys.com.(
2009050803
10800
3600
604800
38400)
NS ns1.cyszys.com.
NS ns2.cyszys.com.
13.15.168.192.in-addr.arpa. PTR ns1.cyszys.com.
14.15.168.192.in-addr.arpa. PTR ns2.cyszys.com.
101.15.168.192.in-addr.arpa. PTR ora01.cyszys.com.
102.15.168.192.in-addr.arpa. PTR ora02.cyszys.com.
211.15.168.192.in-addr.arpa. PTR scan.cyszys.com.
212.15.168.192.in-addr.arpa. PTR scan.cyszys.com.
213.15.168.192.in-addr.arpa. PTR scan.cyszys.com.
201.15.168.192.in-addr.arpa. PTR ora01-vip.cyszys.com.
202.15.168.192.in-addr.arpa. PTR ora02-vip.cyszys.com.
################db.15.168.192#####################
named.ca 文件配置：
################named.ca######################## ; This file holds the information on root name servers needed to ; initialize cache of Internet domain name servers ; (e.g. reference this file in the "cache . <file>" ; configuration file of BIND domain name servers). ; ; This file is made available by InterNIC ; under anonymous FTP as ; file /domain/named.root ; on server FTP.INTERNIC.NET ; -OR- RS.INTERNIC.NET ; ; last update: Feb 04, 2008 ; related version of root zone: 2008020400 ; ; formerly NS.INTERNIC.NET ; . 3600000 IN NS A.ROOT-SERVERS.NET. A.ROOT-SERVERS.NET. 3600000 A 198.41.0.4 A.ROOT-SERVERS.NET. 3600000 AAAA 2001:503:BA3E::2:30 ; ; formerly NS1.ISI.EDU ; . 3600000 NS B.ROOT-SERVERS.NET. B.ROOT-SERVERS.NET. 3600000 A 192.228.79.201 ; ; formerly C.PSI.NET ; . 3600000 NS C.ROOT-SERVERS.NET. C.ROOT-SERVERS.NET. 3600000 A 192.33.4.12 ; ; formerly TERP.UMD.EDU ; . 3600000 NS D.ROOT-SERVERS.NET. D.ROOT-SERVERS.NET. 3600000 A 128.8.10.90 ; ; formerly NS.NASA.GOV ; . 3600000 NS E.ROOT-SERVERS.NET. E.ROOT-SERVERS.NET. 3600000 A 192.203.230.10 ; ; formerly NS.ISC.ORG ; . 3600000 NS F.ROOT-SERVERS.NET. F.ROOT-SERVERS.NET. 3600000 A 192.5.5.241 F.ROOT-SERVERS.NET. 3600000 AAAA 2001:500:2f::f ; ; formerly NS.NIC.DDN.MIL ; . 3600000 NS G.ROOT-SERVERS.NET. G.ROOT-SERVERS.NET. 3600000 A 192.112.36.4 ; ; formerly AOS.ARL.ARMY.MIL ; . 3600000 NS H.ROOT-SERVERS.NET. H.ROOT-SERVERS.NET. 3600000 A 128.63.2.53 H.ROOT-SERVERS.NET. 3600000 AAAA 2001:500:1::803f:235 ; ; formerly NIC.NORDU.NET ; . 3600000 NS I.ROOT-SERVERS.NET. I.ROOT-SERVERS.NET. 3600000 A 192.36.148.17 ; ; operated by VeriSign, Inc. ; . 3600000 NS J.ROOT-SERVERS.NET. J.ROOT-SERVERS.NET. 3600000 A 192.58.128.30 J.ROOT-SERVERS.NET. 3600000 AAAA 2001:503:C27::2:30 ; ; operated by RIPE NCC ; . 3600000 NS K.ROOT-SERVERS.NET. K.ROOT-SERVERS.NET. 3600000 A 193.0.14.129 K.ROOT-SERVERS.NET. 3600000 AAAA 2001:7fd::1 ; ; operated by ICANN ; . 3600000 NS L.ROOT-SERVERS.NET. L.ROOT-SERVERS.NET. 3600000 A 199.7.83.42 ; ; operated by WIDE ; . 3600000 NS M.ROOT-SERVERS.NET. M.ROOT-SERVERS.NET. 3600000 A 202.12.27.33 M.ROOT-SERVERS.NET. 3600000 AAAA 2001:dc3::35 ; End of File ################named.ca########################
named.conf 文件配置：
################named.conf#######################
//
// named.conf for Red Hat caching-nameserver
//
options {
directory "/var/named";
dump-file "/var/named/data/cache_dump.db";
statistics-file "/var/named/data/named_stats.txt";
/*
* If there is a firewall between you and nameservers you want
* to talk to, you might need to uncomment the query-source
* directive below. Previous versions of BIND always asked
* questions using port 53, but BIND 8.1 uses an unprivileged
* port by default.
*/
// query-source address * port 53;
};
//
// a caching only nameserver config
//
controls {
inet 127.0.0.1 allow { localhost; } keys { rndckey; };
};
zone "." IN {
type hint;
file "named.ca";
};
zone "cyszys.com" IN {
type master;
file "db.cyszys.com";
allow-update { none; };
};
zone "15.168.192.in-addr.arpa" IN {
type master;
file "db.15.168.192";
allow-update { none; };
};
include "/etc/rndc.key";
################named.conf#######################
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