linux6 DNS服務配置+ORACLE11g RAC使用scan和DNS連接配接

一．基本資訊

本檔案将配置DNS伺服器，并且測試oracle11Gr2下使用SCAN和DNS配置網絡連接配接。

本檔案涉及到的機器

DNS機器	叢集節點1	叢集節點1	用戶端
OS	Rhel63	Rhel63	Rhel63	Win7
IP	192.168.114.138	IP:192.168.114.141 VIP:192.168.114.143 Priv:172.168.114.141	IP:192.168.114.142 VIP:192.168.114.144 Priv:172.168.114.142	192.168.114.127
SCAN IP: 192.168.114.145 192.168.114.146 192.168.114.147

# cat /etc/issue

Red Hat Enterprise Linux Server release 6.3(Santiago)

Kernel \r on an \m

SQL> select * from V$version;

BANNER

--------------------------------------------------------------------------------

Oracle Database 11g Enterprise EditionRelease 11.2.0.4.0 - 64bit Production

PL/SQL Release 11.2.0.4.0 - Production

CORE 11.2.0.4.0 Production

TNS for Linux: Version 11.2.0.4.0 -Production

NLSRTL Version 11.2.0.4.0 - Production

二．DNS伺服器配置：

安裝相應的包

[[email protected] ~]# yum install bind bind-devel bind-chrootcaching-nameserver

[[email protected] ~]# cat /etc/resolv.conf

search localdomain

nameserver 192.168.114.138

保證resolv.conf不會自動修改

[[email protected] ~]#chattr+i /etc/resolv.conf

修改named.conf

[[email protected] ~]# vi/etc/named.conf

修改：

listen-on port 53 {any; };

allow-query { any; }; --也可以是具體IP段，如192.168.110.0/24;

并為配置簡單，将一些安裝相關的用//注釋掉

options {

listen-on port 53 {any; };

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";

allow-query { any; };

recursion yes;

// dnssec-enable yes;

// dnssec-validation yes;

// dnssec-lookaside auto;

// bindkeys-file "/etc/named.iscdlv.key";

// managed-keys-directory "/var/named/dynamic";

};

logging {

channel default_debug {

file"data/named.run";

severity dynamic;

};

zone "." IN {

type hint;

file "named.ca";

};

include"/etc/named.rfc1912.zones";

//include "/etc/named.root.key";

named.conf中隻有“.”區域，其他的在/etc/named.rfc1912.zones中配置

修改/etc/named.rfc1912.zones

在/etc/named.rfc1912.zones中建立正向反向區域

[[email protected] ~]# vi/etc/named.rfc1912.zones

加入下面兩部分

zone "pera.com"IN {

type master;

file "pera.com.zone";

allow-update { none; };

};

zone "114.168.192.in-addr.arpa"IN {

type master;

file "192.168.114.arpa";

allow-update { none; };

};

建立正反向解析檔案

[[email protected] ~]# cd /var/named/

[[email protected] named]# cp -p named.localhost pera.com.zone

[[email protected] named]# cp -p named.localhost 192.168.114.arpa

修改正向解析：

[[email protected] named]# vi /var/named/pera.com.zone

$TTL 5M

@ IN SOA @ rname.invalid. (

0 ; serial

1D ; refresh

1H ; retry

1W ; expire

3H) ; minimum

NS @

A 192.168.114.138

AAAA ::1

dns A 192.168.114.138

DNS1 CNAME dns

ftp A 192.168.114.138

mail A 192.168.114.138

racn-cluster-scan A 192.168.114.145

racn-cluster-scan A 192.168.114.146

racn-cluster-scan A 192.168.114.147

@ MX 5 mail.localdomain

$GENERATE 10-250 stu$ A 192.168.114.$

修改反向解析：

[[email protected] ~]# vi/var/named/192.168.114.arpa

$TTL 1D

@ IN SOA @ rname.invalid. (

0 ; serial

1D ; refresh

1H ; retry

1W ; expire

3H) ; minimum

NS pera.com.

A 127.0.0.1

AAAA ::1

138 PTR dns

145 PTR racn-cluster-scan.pera.com.

146 PTR racn-cluster-scan.pera.com.

147 PTR racn-cluster-scan.pera.com.

啟動named

[[email protected] named]# /etc/rc.d/init.d/namedrestart

Stopping named: [ OK ]

Starting named: [ OK ]

檢查

[[email protected] ~]# netstat -anp|grep :53

tcp 0 0 192.168.114.138:53 0.0.0.0:* LISTEN 2104/named

tcp 0 0 127.0.0.1:53 0.0.0.0:* LISTEN 2104/named

tcp 0 0 ::1:53 :::* LISTEN 2104/named

udp 0 0 0.0.0.0:5353 0.0.0.0:* 1930/avahi-daemon

udp 0 0 172.168.146.138:53 0.0.0.0:* 2104/named

udp 0 0 192.168.114.138:53 0.0.0.0:* 2104/named

udp 0 0 127.0.0.1:53 0.0.0.0:* 2104/named

udp 0 0 ::1:53 :::* 2104/named

[[email protected]~]# nslookup

> 192.168.114.138

Server: 192.168.114.138

Address: 192.168.114.138#53

138.114.168.192.in-addr.arpa name = dns.pera.com.

> dns

Server: 192.168.114.138

Address: 192.168.114.138#53

Name: dns.pera.com

Address: 192.168.114.138

> dns1

Server: 192.168.114.138

Address: 192.168.114.138#53

dns1.pera.com canonical name = dns.pera.com.

Name: dns.pera.com

Address: 192.168.114.138

> racn-cluster-scan

Server: 192.168.114.138

Address: 192.168.114.138#53