DNS服务器的安装与配置

## 主机名 hadoop4 IP 192.168.0.106 作为DNS服务器
## 安装bind相应的软件包：
[[email protected] ~]# yum -y install bind bind-utils bind-chroot

## 检查是否安装bind:
[[email protected] ~]# rpm -qa | grep ‘^bind‘
bind-chroot-9.8.2-0.30.rc1.el6_6.2.x86_64
bind-9.8.2-0.30.rc1.el6_6.2.x86_64
bind-libs-9.8.2-0.30.rc1.el6_6.2.x86_64
bind-utils-9.8.2-0.30.rc1.el6_6.2.x86_64

## 修改/etc/named.conf
[[email protected] ~]# vim /etc/named.conf
listen-on port 53 { any; }; //将原来的127.0.0.1改成any
allow-query     { any; }; //将原来的localhost改成any

## 修改/etc/named.rfc1912.zones，将两个zone增加在/etc/named.rfc1912.zones 文件最后（也可以直接写在named.conf中）
[[email protected] ~]# vim /etc/named.rfc1912.zones
zone "hadoop.com" IN {
        type master;
        file "named.hadoop.com";
        allow-update { none; };
};
zone "0.168.192.in-addr.arpa" IN {
        type master;
        file "named.192.168.0.zone";
        allow-update { none; };
};

## 配置正向解析文件
[[email protected] ~]# cd /var/named
[[email protected] named]# cp -p named.localhost named.hadoop.com
[[email protected] named]# vim named.hadoop.com
$TTL 1D
@       IN SOA  hadoop4.hadoop.com. grid.hadoop4.hadoop.com. (
                                        0       ; serial
                                        1D      ; refresh
                                        1H      ; retry
                                        1W      ; expire
                                        3H )    ; minimum
@       IN      NS      hadoop4.hadoop.com.
hadoop4.hadoop.com. IN A 192.168.0.106
hadoop5.hadoop.com. IN A 192.168.0.107
hadoop6.hadoop.com. IN A 192.168.0.108

## 配置反向解析文件
[[email protected] ~]# cd /var/named
[[email protected] named]# cp -p named.localhost named.192.168.0.zone
[[email protected] named]# vim named.192.168.0.zone
$TTL 1D
@       IN SOA  hadoop4.hadoop.com. grid.hadoop4.hadoop.com. (
                                        0       ; serial
                                        1D      ; refresh
                                        1H      ; retry
                                        1W      ; expire
                                        3H )    ; minimum
@       IN      NS      hadoop4.hadoop.com.
106 IN PTR hadoop4.hadoop.com.
107 IN PTR hadoop5.hadoop.com.
108 IN PTR hadoop6.hadoop.com.

## 添加DNS域名服务器ip，在每个节点的 /etc/sysconfig/network-scripts/ifcfg-eth0 文件中加入服务器ip地址
[[email protected] ~]# vim /etc/sysconfig/network-scripts/ifcfg-eth0
DEVICE=eth0
HWADDR=08:00:27:26:b8:c1
TYPE=Ethernet
UUID=dabd3173-5f69-454c-aa97-5cc2a09dfba0
ONBOOT=yes
NM_CONTROLLED=yes
#BOOTPROTO=dhcp
BOOTPROTO=static
BROADCAST=192.168.0.255
IPADDR=192.168.0.106
NETMASK=255.255.255.0
GATEWAY=192.168.0.1
DNS1=192.168.0.106
[[email protected] ~]# service network restart

## 启动DNS
[[email protected] ~]# service named start
启动 named：                                               [确定]

## 设置开机启动
[[email protected] ~]# chkconfig named on

## 查看日志确认DNS服务是否正常
[[email protected] ~]# tail -n 30 /var/log/messages | grep named
Apr 26 13:48:11 hadoop4 named[5443]: sizing zone task pool based on 8 zones
Apr 26 13:48:11 hadoop4 named[5443]: using built-in DLV key for view _default
Apr 26 13:48:11 hadoop4 named[5443]: set up managed keys zone for view _default, file ‘/var/named/dynamic/managed-keys.bind‘
Apr 26 13:48:11 hadoop4 named[5443]: Warning: ‘empty-zones-enable/disable-empty-zone‘ not set: disabling RFC 1918 empty zones
Apr 26 13:48:11 hadoop4 named[5443]: automatic empty zone: 127.IN-ADDR.ARPA
Apr 26 13:48:11 hadoop4 named[5443]: automatic empty zone: 254.169.IN-ADDR.ARPA
Apr 26 13:48:11 hadoop4 named[5443]: automatic empty zone: 2.0.192.IN-ADDR.ARPA
Apr 26 13:48:11 hadoop4 named[5443]: automatic empty zone: 100.51.198.IN-ADDR.ARPA
Apr 26 13:48:11 hadoop4 named[5443]: automatic empty zone: 113.0.203.IN-ADDR.ARPA
Apr 26 13:48:11 hadoop4 named[5443]: automatic empty zone: 255.255.255.255.IN-ADDR.ARPA
Apr 26 13:48:11 hadoop4 named[5443]: automatic empty zone: 0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.IP6.ARPA
Apr 26 13:48:11 hadoop4 named[5443]: automatic empty zone: D.F.IP6.ARPA
Apr 26 13:48:11 hadoop4 named[5443]: automatic empty zone: 8.E.F.IP6.ARPA
Apr 26 13:48:11 hadoop4 named[5443]: automatic empty zone: 9.E.F.IP6.ARPA
Apr 26 13:48:11 hadoop4 named[5443]: automatic empty zone: A.E.F.IP6.ARPA
Apr 26 13:48:11 hadoop4 named[5443]: automatic empty zone: B.E.F.IP6.ARPA
Apr 26 13:48:11 hadoop4 named[5443]: automatic empty zone: 8.B.D.0.1.0.0.2.IP6.ARPA
Apr 26 13:48:11 hadoop4 named[5443]: command channel listening on 127.0.0.1#953
Apr 26 13:48:11 hadoop4 named[5443]: command channel listening on ::1#953
Apr 26 13:48:11 hadoop4 named[5443]: zone 0.in-addr.arpa/IN: loaded serial 0
Apr 26 13:48:11 hadoop4 named[5443]: zone 1.0.0.127.in-addr.arpa/IN: loaded serial 0
Apr 26 13:48:11 hadoop4 named[5443]: zone 0.168.192.in-addr.arpa/IN: loaded serial 0
Apr 26 13:48:11 hadoop4 named[5443]: zone 1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.ip6.arpa/IN: loaded serial 0
Apr 26 13:48:11 hadoop4 named[5443]: zone hadoop.com/IN: loaded serial 0
Apr 26 13:48:11 hadoop4 named[5443]: zone localhost.localdomain/IN: loaded serial 0
Apr 26 13:48:11 hadoop4 named[5443]: zone localhost/IN: loaded serial 0
Apr 26 13:48:11 hadoop4 named[5443]: managed-keys-zone ./IN: loaded serial 3
Apr 26 13:48:11 hadoop4 named[5443]: running
Apr 26 13:48:11 hadoop4 named[5443]: zone hadoop.com/IN: sending notifies (serial 0)
Apr 26 13:48:11 hadoop4 named[5443]: zone 0.168.192.in-addr.arpa/IN: sending notifies (serial 0)

## 验证测试
[[email protected] ~]# nslookup hadoop4.hadoop.com
Server:		192.168.0.106
Address:	192.168.0.106#53

Name:	hadoop4.hadoop.com
Address: 192.168.0.106

[[email protected] ~]# nslookup 192.168.0.107
Server:		192.168.0.106
Address:	192.168.0.106#53

107.0.168.192.in-addr.arpa	name = hadoop5.hadoop.com.