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Fri, 29 Jul 2011

/Admin: Apt-Cacher-NG: Caching Downloaded .deb Packages

This is a polite thing to do if you have multiple machines running the same distribution on your network since it takes some of the stress off of the distribution's mirrors. It is also the right thing to do, as you do not waste bandwidth, and in places where bandwidth sucks, you also save a lot of time waiting for downloads.

I used to use apt-move for this, but it has recently stopped working, and is also orphaned. apt-cacher-ng[1] would appear to be a more elegant solution, and seems to work out of the box with the default configuration. All I did on the server side (where apt-cacher-ng is actually installed) is open port 3142 in the firewall, and add this line to /etc/apt/apt.conf:

Acquire::http { Proxy "http://127.0.0.1:3142"; };

which forces all apt network traffic to go to apt-cacher-ng on the designated port. On the client side, I added this line to /etc/apt/apt.conf:

Acquire::http { Proxy "http://lenovo:3142"; };

where "lenovo" is the name of my apt-cacher-ng server in /etc/hosts. With these two settings, all packages downloaded to either server or client or saved in the cache for future use.

Note that on the server if you point your browser at

http://localhost:3142/acng-report.html

you will find some cache statistics, and a function for cleaning stale files out of the cache.

[1] http://www.unix-ag.uni-kl.de/~bloch/acng/

posted at: 07:31 | path: /Admin | permanent link to this entry

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Fri, 29 Jul 2011