Juju 2.1.0, and Conjure-up, are here!

[Andrew Wilkins]

On Fri, Feb 24, 2017 at 6:15 PM Adam Collard <adam.collard at canonical.com>
wrote:

> On Fri, 24 Feb 2017 at 10:07 Adam Israel <adam.israel at canonical.com>
> wrote:
>
> Thanks for calling this out, Simon! We should be shouting this from the
> rooftops and celebrating in the streets.
>
>
> Only if you also wave a big WARNING banner!
>
> I can definitely see value in pre-installing a bunch of things in your LXD
> images as a way of speeding up the development/testing cycle, but doing so
> might give you false confidence in your charm. It will become much easier
> to forget to list a package that you need installing,  or to ensure that
> you have the correct access (PPA credentials, or proxy details etc.) and
> having your charm gracefully handle when those are missing.
>
> Juju promises charms encoding operations that can work across multiple
> cloud providers, bare metal and containers please keep that in mind :)
>

Indeed, and this is the reason why it wasn't called out. We probably should
document it for power-users/charmers, but in general I wouldn't go
encouraging its use. Optimising for LXD is great for repeat deploys, but it
wouldn't be great if that leads to less attention to quality on the rest of
the providers.

Anyway, I'm glad it's helping make charmers' lives easier!

Cheers,
Andrew


> On Fri, Feb 24, 2017 at 8:42 AM Stuart Bishop <stuart.bishop at canonical.com>
> wrote:
>
> On 23 February 2017 at 23:20, Simon Davy <simon.davy at canonical.com> wrote:
>
> > One thing that seems to have landed in 2.1, which is worth noting IMO, is
> > the local juju lxd image aliases.
> >
> > tl;dr: juju 2.1 now looks for the lxd image alias juju/$series/$arch in
> the
> > local lxd server, and uses that if it finds it.
> >
> > This is amazing. I can now build a local nightly image[1] that
> pre-installs
> > and pre-downloads a whole set of packages[2], and my local lxd units
> don't
> > have to install them when they spin up. Between layer-basic and Canonical
> > IS' basenode, for us that's about 111 packages that I don't need to
> install
> > on every machine in my 10 node bundle. Took my install hook times from
> 5min+
> > each to <1min, and probably halfs my initial deploy time, on average.
>
> Ooh, thanks for highlighting this! I've needed this feature for a long
> time for exactly the same reasons.
>
>
> > [2] my current nightly cron:
> > https://gist.github.com/bloodearnest/3474741411c4fdd6c2bb64d08dc75040
>
> /me starts stealing
>
> --
> Stuart Bishop <stuart.bishop at canonical.com>
>
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> --
> Adam Israel, Software Engineer
> Canonical // Cloud DevOps // Juju // Ecosystem
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