我刚安装完 Centos 后，无法好吃，获得或者卷曲工作。我得到的是：
$ curl http://www.google.com
curl: (6) Couldn't resolve host 'www.google.com
最令人惊讶的是 ping 确实似乎有效。
ping www.google.com
第一反应，检查 iptables：我根本没有规则。正如我所说，全新安装。
/etc/resolv.conf
nameserver 127.0.0.1
nameserver 8.8.8.8
nameserver 8.8.4.4
PS：尝试了使用 http:// 和不使用 http:// 两种方式。
答案1
删除该条目nameserver 127.0.0.1它至少应该开始工作。
接下来修复你的本地解析器
$ dig @8.8.8.8 www.google.com
; <<>> DiG 9.7.3 <<>> @8.8.8.8 www.google.com
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 47139
;; flags: qr rd ra; QUERY: 1, ANSWER: 6, AUTHORITY: 0, ADDITIONAL: 0
;; QUESTION SECTION:
;www.google.com. IN A
;; ANSWER SECTION:
www.google.com. 43199 IN CNAME www.l.google.com.
www.l.google.com. 299 IN A 74.125.227.146
www.l.google.com. 299 IN A 74.125.227.145
www.l.google.com. 299 IN A 74.125.227.144
www.l.google.com. 299 IN A 74.125.227.148
www.l.google.com. 299 IN A 74.125.227.147
;; Query time: 73 msec
;; SERVER: 8.8.8.8#53(8.8.8.8)
;; WHEN: Wed Aug 1 04:14:14 2012
;; MSG SIZE rcvd: 132
$
$ dig @8.8.4.4 www.google.com
; <<>> DiG 9.7.3 <<>> @8.8.4.4 www.google.com
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 46533
;; flags: qr rd ra; QUERY: 1, ANSWER: 6, AUTHORITY: 0, ADDITIONAL: 0
;; QUESTION SECTION:
;www.google.com. IN A
;; ANSWER SECTION:
www.google.com. 43152 IN CNAME www.l.google.com.
www.l.google.com. 252 IN A 74.125.227.146
www.l.google.com. 252 IN A 74.125.227.145
www.l.google.com. 252 IN A 74.125.227.144
www.l.google.com. 252 IN A 74.125.227.148
www.l.google.com. 252 IN A 74.125.227.147
;; Query time: 32 msec
;; SERVER: 8.8.4.4#53(8.8.4.4)
;; WHEN: Wed Aug 1 04:15:02 2012
;; MSG SIZE rcvd: 132
$