[Инсталляция Oracle RAC 12.1 в Oracle Linux 6.7 (ISCSI + ASM)]: Настройка DNS сервера


Server: dnsserv


DNS сервер настраивается только с целью, чтобы заработал RAC. Если нужен правильно работающий DNS сервер, необходимо обрадиться к специальным руководствам по настройке DNS сервера.


Инсталляция DNS сервера:

Если в каталоге /etc/yum.repos.d нет нет файлов с описанием репозиториев Oracle Linux.

# vi /etc/yum.repos.d/OracleLinuxRepo.repo


[OEL6]
name=Oracle Enterprise Linux $releasever - $basearch
baseurl=http://public-yum.oracle.com/repo/OracleLinux/OL6/latest/$basearch/
gpgkey=http://public-yum.oracle.com/RPM-GPG-KEY-oracle-ol6
gpgcheck=1
enabled=1


# yum install -y \
bind \
bind-utils


Настройка конфигурационных файлов DNS сервера:

# vi /etc/named.conf


options
{
    directory "/var/named";
};


// ## Localdomain with domain prefix

        zone "localdomain" IN  {
                 type master;
                 file "localdomain.zone";
                 allow-update {none;};
        };


// ## zone ARPA

        zone "1.168.192.in-addr.arpa" IN  {
                type master;
                file "192.168.1.in-addr.arpa";
        };


        zone "2.168.192.in-addr.arpa" IN  {
                type master;
                file "192.168.2.in-addr.arpa";
        };


           zone "3.168.192.in-addr.arpa" IN  {
                type master;
                file "192.168.3.in-addr.arpa";
        };


# vi /var/named/localdomain.zone


$TTL 86400
@                   	IN SOA              	ns1.localdomain. root.localhost (
                                                            	2010063000 ; serial
                                                            	28800 ; refresh
                                                            	14400 ; retry
                                                            	3600000 ; expiry
                                                            	86400 ) ; minimum
@                   	IN                  	NS          	ns1.localdomain.
localhost           	IN                  	A           	127.0.0.1
ns1                 	IN                  	A           	192.168.1.10

rac12-scan             	IN                  	A           	192.168.1.31
rac12-scan             	IN                  	A           	192.168.1.32
rac12-scan             	IN                  	A           	192.168.1.33


rac1-vip            	IN                  	A           	192.168.1.21
rac2-vip            	IN                  	A           	192.168.1.22


rac1                	IN                  	A           	192.168.1.11
rac2                	IN                  	A           	192.168.1.12
storage             	IN                  	A           	192.168.1.15


rac1-priv-interconnect  IN                  	A           	192.168.2.11
rac2-priv-interconnect  IN                  	A           	192.168.2.12


rac1-priv-storage     	IN                  	A           	192.168.3.11
rac2-priv-storage      	IN                  	A           	192.168.3.12


# vi /var/named/192.168.1.in-addr.arpa


$TTL   	86400
@      	IN   	SOA   	ns1.localdomain. postmaster.localhost. (
                    	2010063000 ; serial
                    	28800 ; refresh
                    	14400 ; retry
                    	3600000 ; expiry
                    	86400 ) ; minimum
@      	IN   	NS   	ns1.localdomain.

31     	IN   	PTR  	rac12-scan.localdomain.
32     	IN   	PTR  	rac12-scan.localdomain.
33     	IN   	PTR  	rac12-scan.localdomain.

21     	IN   	PTR  	rac1-vip.localdomain.
22     	IN   	PTR  	rac2-vip.localdomain.

11     	IN   	PTR  	rac1.localdomain.
12     	IN   	PTR  	rac2.localdomain.
13     	IN   	PTR  	storage.localdomain.


# vi /var/named/192.168.2.in-addr.arpa


$TTL   	86400
@      	IN   	SOA   	ns1.localdomain. postmaster.localhost. (
                    	2010063000 ; serial
                    	28800 ; refresh
                    	14400 ; retry
                    	3600000 ; expiry
                    	86400 ) ; minimum
@      	IN   	NS   	ns1.localdomain.

11     	IN   	PTR  	rac1-priv-interconnect.localdomain.
12     	IN   	PTR  	rac2-priv-interconnect.localdomain.


# vi /var/named/192.168.3.in-addr.arpa


$TTL   	86400
@      	IN   	SOA   	ns1.localdomain. postmaster.localhost. (
                    	2010063000 ; serial
                    	28800 ; refresh
                    	14400 ; retry
                    	3600000 ; expiry
                    	86400 ) ; minimum
@      	IN   	NS   	ns1.localdomain.

11     	IN   	PTR  	rac1-priv-storage.localdomain.
12     	IN   	PTR  	rac2-priv-storage.localdomain.

Добавление в автозапуск:

# chkconfig --level 345 named on

Restart

# service named restart

Статус:

rndc status

Проверка на клиентах:

nslookup rac1
nslookup rac2.localdomain
nslookup 192.168.1.11