爱威尔-hadoop集群-使用DNS代替hosts文件

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 <tbody> 
 <tr> 
 <td width="57" style="font-family:inherit;font-size:19px;font-style:inherit;vertical-align:baseline;"> 主机名 </td> 
 <td width="57" style="font-family:inherit;font-size:19px;font-style:inherit;vertical-align:baseline;"> IP </td> 
 </tr> 
 <tr> 
 <td width="57" style="font-family:inherit;font-size:19px;font-style:inherit;vertical-align:baseline;"> H1 </td> 
 <td width="57" style="font-family:inherit;font-size:19px;font-style:inherit;vertical-align:baseline;"> 192.168.137.11 </td> 
 </tr> 
 <tr> 
 <td width="57" style="font-family:inherit;font-size:19px;font-style:inherit;vertical-align:baseline;"> H2 </td> 
 <td width="57" style="font-family:inherit;font-size:19px;font-style:inherit;vertical-align:baseline;"> 192.168.137.12 </td> 
 </tr> 
 <tr> 
 <td width="57" style="font-family:inherit;font-size:19px;font-style:inherit;vertical-align:baseline;"> H3 </td> 
 <td width="57" style="font-family:inherit;font-size:19px;font-style:inherit;vertical-align:baseline;"> 192.168.137.13 </td> 
 </tr> 
 <tr> 
 <td width="57" style="font-family:inherit;font-size:19px;font-style:inherit;vertical-align:baseline;"> H4 </td> 
 <td width="57" style="font-family:inherit;font-size:19px;font-style:inherit;vertical-align:baseline;"> 192.168.137.14 </td> 
 </tr> 
 <tr> 
 <td width="57" style="font-family:inherit;font-size:19px;font-style:inherit;vertical-align:baseline;"> H5 </td> 
 <td width="57" style="font-family:inherit;font-size:19px;font-style:inherit;vertical-align:baseline;"> 192.168.137.15 </td> 
 </tr> 
 <tr> 
 <td width="57" style="font-family:inherit;font-size:19px;font-style:inherit;vertical-align:baseline;"> H6 </td> 
 <td width="57" style="font-family:inherit;font-size:19px;font-style:inherit;vertical-align:baseline;"> 192.168.137.16 </td> 
 </tr> 
 </tbody> 
</table> 
 1.安装DNS在h1上面 
 检查命令 : 
 rpm –q bind 
 rpm -q bind-chroot 
 安装命令： 
 yum -y install bind bind-chroot 
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 <li style="font-family:inherit;font-style:inherit;font-weight:inherit;vertical-align:baseline;"> 修改/etc/named.conf </li> 
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 listen-on port 53 { any; }; 
 allow-query     { any; }; 
 
 // 
 // named.conf 
 // 
 // Provided by Red Hat bind package to configure the ISC BIND named(8) DNS 
 // server as a caching only nameserver (as a localhost DNS resolver only). 
 // 
 // See /usr/share/doc/bind*/sample/ for example named configuration files. 
 // 
 
 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; 
 
 /* Path to ISC DLV key */ 
 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”; 
 
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 <li style="font-family:inherit;font-style:inherit;font-weight:inherit;vertical-align:baseline;"> 修改/etc/named.rfc1912.zones </li> 
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 正反配置 
 // named.rfc1912.zones: 
 // 
 // Provided by Red Hat caching-nameserver package 
 // 
 // ISC BIND named zone configuration for zones recommended by 
 // RFC 1912 section 4.1 : localhost TLDs and address zones 
 // and http://www.ietf.org/internet-drafts/draft-ietf-dnsop-default-local-zones-02.txt 
 // (c)2007 R W Franks 
 // 
 // See /usr/share/doc/bind*/sample/ for example named configuration files. 
 // 
 
 zone “localhost.localdomain” IN { 
 type master; 
 file “named.localhost”; 
 allow-update { none; }; 
 }; 
 
 zone “localhost” IN { 
 type master; 
 file “named.localhost”; 
 allow-update { none; }; 
 }; 
 
 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 { 
 type master; 
 file “named.loopback”; 
 allow-update { none; }; 
 }; 
 
 zone “1.0.0.127.in-addr.arpa” IN { 
 type master; 
 file “named.loopback”; 
 allow-update { none; }; 
 }; 
 
 zone “0.in-addr.arpa” IN { 
 type master; 
 file “named.empty”; 
 allow-update { none; }; 
 }; 
 zone “weir.com” IN { 
 type master; 
 file “weir.com.zone”; 
 allow-update { none; }; 
 }; 
 zone “137.168.192.in-addr.arpa” IN { 
 type master; 
 file “137.168.192.in-addr.zone”; 
 allow-update { none; }; 
 }; 
 4.在/var/named目录下创建weir.com.zone和137.168.192.in-addr.zon文件 
 这里是将named.localhost  拷贝之后做的修改 
 cp -p named.localhost weir.com.zone 
 cp -p named.localhost 137.168.192.in-addr.zone 
 
 weir.com.zone文件内容： 
 $TTL 86400 
 @    IN    SOA  h1.weir.com. chizk.www.weir.com. ( 
 0 ; serial (d. adams) 
 1D ; refresh 
 1H ; retry 
 1W ; expiry 
 3H ) ; minimum 
 @    IN    NS  h1.weir.com. 
 h1.weir.com. IN A 192.168.137.11 
 h2.weir.com. IN A 192.168.137.12 
 h3.weir.com. IN A 192.168.137.13 
 h4.weir.com. IN A 192.168.137.14 
 h5.weir.com. IN A 192.168.137.15 
 h6.weir.com. IN A 192.168.137.16 
 
 137.168.192.in-addr.zone文件内容： 
 
 $TTL 86400 
 @    IN    SOA  h1.weir.com. chizk.www.weir.com. ( 
 0 ; serial (d. adams) 
 1D ; refresh 
 1H ; retry 
 1W ; expiry 
 3H ) ; minimum 
 @    IN    NS  h1.weir.com. 
 11 IN PTR h1.weir.com. 
 12 IN PTR h2.weir.com. 
 13 IN PTR h3.weir.com. 
 14 IN PTR h4.weir.com. 
 15 IN PTR h5.weir.com. 
 16 IN PTR h6.weir.com. 
 
 修改正向文件和反向文件属组 
 [root@h1 named]# chgrp named weir.com.rev 
 [root@h1 named]# chgrp named weir.com.zone 
 
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 <li style="font-family:inherit;font-style:inherit;font-weight:inherit;vertical-align:baseline;"> 添加DNS域名服务器ip（这里注意修改/etc/resolv.conf是没用的，重启电脑就失效了） </li> 
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 先说h1电脑，因为是DNS服务器所以我没有配置这一项 ，这里可能与我的网络连接有关系 
 
 <img src="2/20150103152210_543.png" alt=""> 
 
 下面说其他节点： 
 
 <img src="2/20150103152229_390.png" alt=""> 
 
 这里需要找到/etc/sysconfig/network-scripts/ifcfg-eth0 
 主要是加入DNS1=192.168.137.11 
 
 DEVICE=eth0 
 TYPE=Ethernet 
 UUID=5a32d5ab-af65-44bc-9d21-c757fb44add3 
 ONBOOT=yes 
 NM_CONTROLLED=yes 
 BOOTPROTO=none 
 IPADDR=192.168.137.12 
 PREFIX=16 
 GATEWAY=192.168.137.1 
 DEFROUTE=yes 
 IPV4_FAILURE_FATAL=yes 
 IPV6INIT=no 
 NAME=”System eth0″ 
 
 
 HWADDR=08:00:27:17:25:7F 
 LAST_CONNECT=1402057925 
 
 DNS1=192.168.137.11 
 
 6.启动DNS（防火墙关闭） 
 service named start 
 自动开启： 
 查看：chkconfig –list named 
 设置启动级别：chkconfig  –level 123456 named on 
 
 7.测试： 
 nslookup h1.weir.com 
 nslookup 192.168.137.12 
 
 host h1.weir.com 
 host 192.168.137.12