Re: plone charm for juju

Before I completely forget about this, I hacked together a buildout charm
during PloneConf:

  https://github.com/sidnei/buildout-charm

I still have to properly document it, but if anyone wants to give it a try.


On Thu, May 16, 2013 at 4:07 AM, sven <[email protected]> wrote:

>  Hi,
>
> Thanks for your feedback !
>
> I will play more with juju when I am back from holidays :)
>
> cheers
>
> Sven
>
>
> On 05/15/2013 08:48 PM, Sidnei da Silva wrote:
>
> Hi Sven, here's some feedback.
>
>
> On Mon, May 6, 2013 at 2:59 PM, sven <[email protected]> wrote:
> >
> > Hey,
> >
> > Sorry for the delay I was supposed to mail this on Saturday, but we have
> sun and more than 10 degrees Celsius :)
> >
> > During the last weekend I was playing a bit with Juju [
> https://juju.ubuntu.com/] the Ubuntu deployment.
> >
> > juju aims to be a service deployment and orchestration tool which
> enables the same kind of collaboration and ease of use which today is seen
> around package management to happen on a higher level, around services.
> >
> >
> > Since I did not wanted to reinvent the wheel, my goal was to use our
> UI-installer and just do the deploy via juju, another goal was to keep the
> config file for juju as small as possible.
> >
> > The result is here:
> >
> > https://github.com/svx/plone-charm
> >
> > At this moment its really just a 'quick and dirty' proof of concept and
> tested with local deployments on lxc container.
> >
> > There is plenty of room for improvement, but first I wanted to hear
> other opinions, ideas, if we want to do that at all and so on ....
> >
> > What is good to know is, that there at least at the moment some
> limitations with juju, for example to set config on the fly like:
> >
> > 'juju deploy user=foo pas=bar setup=zeo .....'
> >
> > There is a 'set' option in juju, but this option will be executed
> *after* the install. There are open bugs and feature requests about this.
> > So the easiest thing for the moment is to use a config file and change
> stuff there.
>
>  You can use juju deploy --config=<path to yaml file>, nad have user/pass
> in the yaml file.
>
>
>
>
>  Other than that, the best advice I can give you is to *not* use shell
> scripts for your hooks. Yes, it's easy to get off the ground using shell,
> but it makes for highly difficult to test and debug code.
>
>  If you need some inspiration, take a look at the work I did on the
> haproxy charm, specially in tests (
> https://bazaar.launchpad.net/~sidnei/charms/precise/haproxy/trunk/files/head:/hooks/tests/).
> We're moving some code that's common between different charms into helper
> libraries. https://code.launchpad.net/~charm-helpers/charm-helpers/devel is
> a collection of the different ones that cropped up organically and we're
> polishing them to make it the official library to use.
>
>  As a last note, think about how you can improve further and make the
> charm support a more scalable setup, separating for example zeo into it's
> own charm, specifying zeo settings over the relation such that you can join
> a plone service to a zeo service and have them scale separatedly, things
> like that.
>
>  Using juju to simply deploy a single unit of a service is not
> interesting, the beauty comes when you have multiple complicated services
> to join together and making them scale independently by adding more units
> here and there, without having to manually change config files.
>
>  -- Sidnei
>
>
>

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