Announcing the "ubuntu-mirror" charm

Marco Ceppi marco.ceppi at
Tue Sep 23 03:01:10 UTC 2014

Hi Chris!

Awesome work on the charm, I'm not sure I'll ever need to mirror the entire
Ubuntu repository, but if I ever did I'm happy there's a charm for it! I do
like that it leverages the storage charm and is scaleout safe (safe for
bandwidth + wallet too).


On Sat, Sep 20, 2014 at 10:55 AM, Christopher Glass <tribaal at>

> Hi all,
> I've started playing with and deploying my "ubuntu-mirror" charm, that
> leverages the excellent "storage" subordinate charm to create full
> ubuntu mirrors.
> That allows you to mirror a lot of the bits that make up ubuntu: the
> apt repositories of course, but also cdimages, releases, ports and
> cloud-images, and hopefully more in the near future (the MAAS images
> are in the pipe, too, for example).
> I've kicked the tires and deployed the full mirror a couple of times,
> and I think it's now time for more eyes to look at the code, and
> hopefully somebody else will find it useful.
> For what it's worth, I am currently using a very similar setup as an
> official Ubuntu archive and it seems to be doing pretty good.
> The code lives at: lp:~tribaal/charms/trusty/ubuntu-mirror/trunk and
> merge proposals are very welcome, either against the charm or the
> "ubumirror" package it is using (that I also happen to maintain). You
> can deploy it with:
> juju deploy cs:~tribaal/trusty/ubuntu-mirror
> juju deploy storage
> juju set storage "nfs"  # Or whatever storage provider you have a few Tb on
> juju add-relation storage ubuntu-mirror
> # Wait a few hours :)
> Future plans are roughly: get some tests written (it's a very simple
> charm, but hey), get some version approved in the "official"
> charmstore, and add the maas images to the syncing options. I'd also
> like to randomize the crontab schedules a little if left unchanged,
> but I've hit a few problems with the approach I took (using peer
> storage). I'm happy to discuss good ways to solve that, too.
> Note: I've seen an ubuntu proxy charm around here some time ago - this
> one is a *mirror*, so it'll rsync a few *terrabytes* of data if you
> let it do its thing :) It should hopefully not download the whole
> thing multiple times if you scale out, however, so "add-unit" away!
> Hope this helps somebody somewhere :)
> - Chris
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