mac dns查找不当行为 [英] mac dns look up misbehaving

问题描述

有一个新的mac，现在我试图安装/更新一些东西。我得到的第一个问题是，内部脚本/程序（例如git或ruby gem）中的http请求不起作用。我将在下面介绍我使用的解决方法，因为它比任何解释更好地说明了问题。任何帮助不胜感激！

  Leonardos-MacBook-Air：〜leo $ git clone git：//github.com/sstephenson/ rbenv.git .rbenv 
克隆到'.rbenv'... 
致命：无法查找github.com（端口9418）（提供nodename或servname，或未知）
＃它不能找到github.com 
 
 Leonardos-MacBook-Air：〜leo $ ping github.com 
 PING github.com（207.97.227.239）：56个数据字节
 64字节从207.97.227.239：icmp_seq = 0 ttl = 50时间= 104.279毫秒
从207.97.227.239的64字节：icmp_seq = 1 ttl = 50时间= 105.658毫秒
＃它找到它在一个ping，卷曲，甚至浏览器。这表明它不是网络（代理）问题
 
 
不是ELEGANT解决方案
 Leonardos-MacBook-Air：〜leo $ cat / etc / hosts 
＃ ＃
＃主机数据库
＃
＃localhost用于在系统启动时配置环回接口
＃。不要更改此条目。 
 ## 
 127.0.0.1 localhost 
 255.255.255.255 broadcasthost 
 :: 1 localhost 
 fe80 :: 1％lo0 localhost 
 207.97.227.239 github。 com 
＃我在/ etc / hosts文件中添加了最后一行
 
 Leonardos-MacBook-Air：〜leo $ git clone git：//github.com/sstephenson/rbenv.git .rbenv 
克隆到'.rbenv'... 
 remote：计数对象：1040，完成。 
 remote：压缩对象：100％（419/419），完成。 
 remote：总共1040（delta 650），重用959（delta 593）
接收对象：100％（1040/1040），138.25 KiB，完成。 
解决三角洲：100％（650/650），完成。 
＃now it works 
  

解决方案

DNS服务器是这里的罪魁祸首。将路由器的DNS设置更改为 Google的公共DNS 后。

Got a new mac and now I'm trying to install/update some stuff. THe first issue I get is that http requests made from inside scripts/programs (such as git or ruby gem) doesn't work. I'll put an example below of the workaround I used because it illustrates the issue better than any explanation. Any help is appreciated!

Leonardos-MacBook-Air:~ leo$ git clone git://github.com/sstephenson/rbenv.git .rbenv
Cloning into '.rbenv'...
fatal: Unable to look up github.com (port 9418) (nodename nor servname provided, or not known)
# it can not find github.com

Leonardos-MacBook-Air:~ leo$ ping github.com
PING github.com (207.97.227.239): 56 data bytes
64 bytes from 207.97.227.239: icmp_seq=0 ttl=50 time=104.279 ms
64 bytes from 207.97.227.239: icmp_seq=1 ttl=50 time=105.658 ms
# it finds it in a ping, curl, or even a browser. this shows that it's not a network (proxy) issue


NOT SO ELEGANT SOLUTION
Leonardos-MacBook-Air:~ leo$ cat /etc/hosts
##
# Host Database
#
# localhost is used to configure the loopback interface
# when the system is booting.  Do not change this entry.
##
127.0.0.1   localhost
255.255.255.255 broadcasthost
::1             localhost 
fe80::1%lo0 localhost
207.97.227.239  github.com
# I added this last line in the /etc/hosts file

Leonardos-MacBook-Air:~ leo$ git clone git://github.com/sstephenson/rbenv.git .rbenv
Cloning into '.rbenv'...
remote: Counting objects: 1040, done.
remote: Compressing objects: 100% (419/419), done.
remote: Total 1040 (delta 650), reused 959 (delta 593)
Receiving objects: 100% (1040/1040), 138.25 KiB, done.
Resolving deltas: 100% (650/650), done.
# now it works

解决方案

My damn ISP's DNS server was the culprit here. After changing my router's DNS settings to Google's public DNS.

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