Proxy Server

An HTTP/FTP proxy server is set up on backup to reduce the amount of outgoing traffic, especially during OS installation and automatic update.

Usage

A host name alias, proxy, is pointed to backup and should be used in configuration files instead (in case the proxy server is moved to somewhere else). The proxy server is listening at port 3128.

Capacity

The proxy server can use at most 64GB disk space on the root file system in backup.

Proxy Rules

The proxy caches files from the following servers longer:

• http://mirrors1.kernel.org
• http://ftp.us.debian.org

In addition, to deal with the openSUSE installer, which always uses Pragma: no-cache (a.k.a., reload) in HTTP requests, the option ignore-reload is used with the above servers.

OS Installation

For openSUSE, please use mirrors1.kernel.org as your installation source. The 1 after mirrors is important, because the two servers that mirrors.kernel.org points to (mirrors1 and mirrors2) send out different ETag values for the same file in HTTP response. This behavior totally destroys the cache.

-- Main.chtsai - 01 Mar 2007