Re: proxy problem 'Name or service not known' while wget runs fine

On Thu, 4 Mar 2010, Gerben Roest wrote:

> Hi,
>
> I am unable to get yum working behind a proxy with authentication. Wget works 
> fine with:
>
> http_proxy=http://my.proxy.intern:8080
> proxy-user=user
> proxy-password=pass
>
> But if I enter in /etc/yum.conf:
>
> proxy=http://my.proxy.intern:8080/
> proxy_username="user"
> proxy_password="pass"
>
> (or without the quotes, with or without the trailing slash)
>
> I get:
>
> [root@server yum.repos.d]# yum list
> http://linuxsoft.cern.ch/scientific/51/x86_64/SL/repodata/repomd.xml: [Errno 
> 4] IOError: <urlopen error (-2, 'Name or service not known')>
> Trying other mirror.
> Error: Cannot retrieve repository metadata (repomd.xml) for repository: 
> sl-base. Please verify its path and try again
>
> Running a tcpdump reveals no connection to the proxy at all by yum. I thought 
> it could be a DNS problem, the machine itself can't do DNS lookups, only the 
> proxy can do that. I have used the ip address, used /etc/hosts, used tinydns 
> to serve linuxsoft.cern.ch, but it didn't help.
> I have put the proxy in /etc/yum.conf and/or in the repo file, doesn't help. 
> Wget doesn't complain about the lack of DNS. It just leaves that to the proxy 
> and that works fine:
>
> [root@server yum.repos.d]# wget 
> http://linuxsoft.cern.ch/scientific/51/x86_64/SL/repodata/repomd.xml
> --17:15:36-- 
> http://linuxsoft.cern.ch/scientific/51/x86_64/SL/repodata/repomd.xml
> Resolving my.proxy.intern... 10.0.0.1
> Connecting to my.proxy.intern|10.0.0.1|:8080... connected.
> Proxy request sent, awaiting response... 200 OK
> Length: 1143 (1,1K) [text/xml]
> Saving to: `repomd.xml'
>
> 100%[=========================>] 1.143       --.-K/s   in 0s
>
> 17:15:37 (156 MB/s) - `repomd.xml' saved [1143/1143]
>
> I have no environment variables regarding proxies. It doesn't help if I do, 
> either.
>

What ver of yum and what version of urlgrabber?

-sv