IT技术随笔

一、配置 AIX 5.3 DNS解析

1、vi /etc/resolv.conf
增加以下内容：
nameserver DNSserver_ip_address1
nameserver DNSserver_ip_address2
如下：
testterm1:/#cat /etc/resolv.conf
nameserver      10.249.193.4

2、测试DNS是否生效
testterm1:/#nslookup www.ibm.com
Server:  zhdns001.zh.gmcc.net
Address:  10.249.193.4

Non-authoritative answer:
Name:    www.ibm.com.cs186.net
Address:  129.42.58.212
Aliases:  www.ibm.com

二、配置RedHat Linux 5 DNS解析

1、vi /etc/resolv.conf
增加以下内容：
nameserver DNSserver_ip_address1
nameserver DNSserver_ip_address2
如下：
[root@REDHATAS5 /]# cat /etc/resolv.conf
nameserver 10.249.193.4

2、测试DNS是否生效
[root@REDHATAS5 /]# nslookup www.ibm.com
Server:         10.249.193.4
Address:        10.249.193.4#53

Non-authoritative answer:
www.ibm.com     canonical name = www.ibm.com.cs186.net.
Name:   www.ibm.com.cs186.net
Address: 129.42.60.212

说明：若没配置或配置不正确的DNS服务器，在通过nslookup命令测试将报以下错误信息：
testterm1:/#nslookup www.ibm.com
*** Can't find server name for address 10.249.193.44:No response from server
*** Default servers are not available

[root@REDHATAS5 /]# nslookup www.ibm.com
;; connection timed out; no servers could be reached