Oracle 11g R2 RAC：配置DNS解析SCAN VIP(二)
-配置正向解析数据库文件
[root@rac1 named]#vim rac.oracle.zone
$TTL 86400
@ IN SOA oracle.comroot.oracle.com (
42 ; serial (d. adams)
3H ; refresh
15M ; retry
1W ; expiry
1D ) ; minimum
IN NS oracle.com
rac-scan IN A192.168.8.31
rac-scan IN A192.168.8.32
rac-scan IN A192.168.8.33
注意：无论RAC有多少节点，SCAN VIP 的个数只能有3个
-----配置反向解析数据库文件
[root@rac1 named]#vim rac.oracle.local
$TTL 86400
@ IN SOA oracle.com.root.oracle.com. (
1997022700 ; Serial
28800 ; Refresh
14400 ; Retry
3600000 ; Expire
86400 ) ; Minimum
IN NS oracle.com.
31 IN PTRrac-scan.oracle.com.
32 IN PTRrac-scan.oracle.com.
33 IN PTRrac-scan.oracle.com.
注意：
（1） 数字写IP 地址的最后一个。如192.168.6.100, 就写100
（2） rac-scan. 后面有一个点
4、重启 DNS Server
[root@rac1 named]#service named restart Stopping named:[ OK ] Starting named:[ OK ]
5、配置 DNS 客户端
[root@rac1 named]#more /etc/resolv.conf #search oracle.com #nameserver 8.8.8.8 nameserver192.168.8.11
注意，如有必要刻意修改 /etc/nsswitch.conf 文件配置主机解析方式
6、验证 DNS 配置
[root@rac1 named]#nslookup 192.168.8.32 Server: 192.168.8.11 Address: 192.168.8.11#53 32.8.168.192.in-addr.arpa name = rac-scan.oracle.com. [root@rac1 named]#cd /var/named/chroot/var/named [root@rac1 named]#nslookup rac-scan Server: 192.168.8.11 Address: 192.168.8.11#53 Name: rac-scan.oracle.com Address:192.168.8.31 Name: rac-scan.oracle.com Address:192.168.8.32 Name: rac-scan.oracle.com Address:192.168.8.33 [root@rac1 named]#nslookup rac-scan.oracle.com Server: 192.168.8.11 Address: 192.168.8.11#53 Name: rac-scan.oracle.com Address:192.168.8.33 Name: rac-scan.oracle.com Address:192.168.8.31 Name: rac-scan.oracle.com Address:192.168.8.32 [root@rac1 named]#nslookup 192.168.8.32 Server: 192.168.8.11 Address: 192.168.8.11#53 32.8.168.192.in-addr.arpa name = rac-scan.oracle.com. #eth0 - PUBLIC 192.168.8.11rac1.oracle.com rac1 192.168.8.12rac2.oracle.com rac2 #VIP 192.168.8.21rac1-vip.oracle.com rac1-vip 192.168.8.22rac2-vip.oracle.com rac2-vip #eth1 - PRIVATE 10.10.10.11rac1-priv1 10.10.10.12rac2-priv2