oracle rac下dns配置

1.检查是否安装软件

rpm -qa|grep bind

2.软件安装

yum install bind bind-chroot -y

3.配置named.conf

vi /etc/named.conf localhost 改为any

listen-on port 53 { any; };

allow-query { any; };

4.配置正向反向解析zone，zone的索引文件

vi /etc/named.rfc1912.zones
zone "racdb.com" IN {  
        type master;  
        file "racdb.com.zone";  
        allow-update { none; };  
};  

zone "96.168.192.in-addr.arpa" IN {  
        type master;  
        file "96.168.192.in-addr.arpa";  
        allow-update { none; };  
};

5.配置具体的解析区域文件

cd /var/named

cp -a /var/named/named.localhost /var/named/racdb.com.zone

$TTL 86400
@    IN SOA    rac1.racdb.com.              root.racdb.com. (
                    42    ; serial (d. adams)
                    3H    ; refresh
                    15M    ; retry
                    1W    ; expire
                    1D )    ; minimum
          IN   NS    rac1.racdb.com.
racscan   IN   A     192.168.96.36
racscan   IN   A     192.168.96.37
racscan   IN   A     192.168.96.38
rac1      IN   A     192.168.96.30
rac2      IN   A     192.168.96.31

cp -a /var/named/named.loopback /var/named/96.168.192.in-addr.arpa

$TTL    86400
@       IN      SOA     rac1.racdb.com. root.racdb.com.  (
                                      1997022700 ; Serial
                                      28800      ; Refresh
                                      14400      ; Retry
                                      3600000    ; Expire
                                      86400 )    ; Minimum
       IN      NS      rac1.racdb.com.
36     IN      PTR     racscan.racdb.com.
37     IN      PTR     racscan.racdb.com.
38     IN      PTR     racscan.racdb.com.
30     IN      PTR     rac1.racdb.com.
31     IN      PTR     rac2.racdb.com.

6.配置resolv.conf

vi /etc/resolv.conf 两个节点都执行

search racdb.com

nameserver 192.168.96.30

7.重启服务

systemctl restart named

8.测试

nslookup racscan

oracle rac下dns配置

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