Bug#642159: debian-installer preseed broken with apt-cacher-ng mirror
Package: debian-installer
Version: 20110106+squeeze3
Severity: normal
Tags: d-i
Copied from an Ubuntu bug report, since it resembles my problem as well:
In my preseed file I set "d-i mirror/http/proxy string http://apt-cacher:3142/";, this is an apt-cacher-ng proxy. This works correctly for installing the system.
I expect "d-i mirror/http/proxy" to only apply to the debian installer http proxy (apt proxy), and all other http applications, e.g., wget, curl, lynx to not use that setting.
Instead when I run applications from the Kickstart %post section, all HTTP connections are proxied; curl, wget, lynx, hg (mercurial), everything. Once the system installs and reboots all is good, the only remanence of the mirror/http/proxy setting is in /etc/apt/apt.conf, which is fine (though I think that should be configurable too). mirror/http/proxy is setting the environment variable http_proxy.
Repo:
Set "d-i mirror/http/proxy string http://apt-cacher:3142/"; in a preseed (use your local mirror).
Use a Kickstart post section like this:
%post --interpreter=/bin/bash
exec < /dev/tty3 > /dev/ttyS0
chvt 3
(
echo "## http_proxy = $http_proxy"
echo "## lynx dump head"
lynx -dump -head http://example.com
echo "## wget"
wget -O /root/test http://example.com
) 2>&1 | /usr/bin/tee /var/log/post_install.log
chvt 1
After install check /var/log/post_install.log and it will look like:
## http_proxy = http://apt-cacher:3142/
## lynx dump head
HTTP/1.1 403 Forbidden file type or location
Date: Thu Apr 22 16:29:10 2010
Server: Debian Apt-Cacher NG/0.4.6
## wget
--2010-04-22 09:29:10-- http://example.com
Resolving apt-cacher... 10.0.0.10
Connecting to apt-cacher|10.0.0.10|:3142... connected.
Proxy request sent, awaiting response... 403 Forbidden file type or location
2010-04-22 09:29:10 ERROR 403: Forbidden file type or location.
The workaround for me it to reset $http_proxy at the top of %post:
export http_proxy=""
Then all the applications that use http behave normally.
Suggestion:
Don't set $http_proxy with "d-i mirror/http/proxy", maybe set $apt_http_proxy if d-i needs an environment variable. For users that need a general proxy a setting like "d-i http/proxy" could be created.
-- System Information:
Debian Release: 6.0.2
APT prefers stable-updates
APT policy: (500, 'stable-updates'), (500, 'stable')
Architecture: i386 (i686)
Kernel: Linux 2.6.32-5-686 (SMP w/16 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
-- no debconf information
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