APt proxy configuration

[Panu Matilainen]

On Fri, 2 Jun 2006, Dag Wieers wrote:

> Hi,
>
> I'm having problems configuring apt to use a proxy. In fact here's the
> executive summary :)
>
> I have a local repository on one of my systems with all my updated RPMs.
> All systems are told to use _that_ internal server for updates. But some
> of the servers have internet access and therefor have the http_proxy
> variable set by default.
>
> Now the problem is, how do I tell apt to _not_ use the proxy when getting
> packages from localhost or another hostname that's internal. Currently I
> have to start apt-get like:
>
> 	http_proxy="" apt-get update
>
> But that's annoying and only works if all the repositories are internal.
> But in some cases I use mixed internal and internet repositories.

For similar reasons I ended up patching apt to use apt_http_proxy env 
variable instead of http_proxy at work :) The problem is, http_proxy 
overrides all other settings, at least that's what apt.conf manual says 
(this is an area I haven't much looked at). The overriding order seems 
backwards to me, I my mind http_proxy is a *generic* setup that should be 
overridable with specific configuration.

Hmm.. it does also support no_proxy environment variable, but it only 
works properly when FQDN hostnames are used in sources.list (ie it 
doesn't resolve sources.list host FQDN before matching it against the 
no_proxy list). Maybe it'll help you, didn't work for me.

>
> I tried something like:
>
> 	Acquire {
> 	        http {
> 			Proxy::apt.sw.be "http://proxy:8080";
> 	                Proxy::localhost "DIRECT";
> 			Proxy::yam "DIRECT";
> 	                Timeout "120";
> 	                Pipeline-Depth "5";
>
> 	                No-Cache "false";
> 	                Max-Age "86400";     // 1 Day age on index files
> 	                No-Store "false";    // Prevent the cache from storing archives
> 	        };
> 	};
>
> in /etc/apt/apt.conf.d/proxy.conf
>
> But I'm not sure it is being used. Strangely it then seems to parse HTML
> content it gets from the proxy instead.
>
> 	[root at system root]# apt-get update
> 	Get:1 http://localhost rhel3as-i386/RPMS.os repomd.xml [630B]
> 	0% [1 repomd.xml 0/630B
> 	0%]/var/state/apt/lists/localhost_yam_rhel3as-i386_RPMS.os_repodata_repomd.xml:6:
> 	parser error : Opening and ending tag mismatch: meta line 5 and head
> 	</head>
> 	       ^
> 	/var/state/apt/lists/localhost_yam_rhel3as-i386_RPMS.os_repodata_repomd.xml:9:
> 	parser error : AttValue: " or ' expected
> 	<img src=http://www.company.com/wps/themes/html/Company/top_logo.gif>
> 	         ^
> 	/var/state/apt/lists/localhost_yam_rhel3as-i386_RPMS.os_repodata_repomd.xml:9:
> 	parser error : attributes construct error
> 	<img src=http://www.company.com/wps/themes/html/Company/top_logo.gif>
> ...
>
> Anyone has an idea how to fix this ?

You could try setting no_proxy for the internal hosts for starters. But 
now that you reminded me of this - I think the solution is to revert the 
overriding so that any apt specific config overrides http_proxy etc and 
not the other way around.

 	- Panu -