[Labs-l] New custom lucid image (much faster instance creations)

Wed Apr 10 00:24:51 UTC 2013

On Mon, Apr 8, 2013 at 1:25 PM, Ryan Lane <rlane at wikimedia.org> wrote:

> I spent some time last week creating a custom precise image that has all
> of the configuration necessary to allow users to log in to an instance as
> soon as it's booted. There's a bunch of wins here:
>
> 1. Instance creation time is down to 1 - 3.5 minutes, which is the time it
> takes openstack to pick up the action from the queue and build the
> instance. It was previously 6 - 11 minutes (and usually closer to 11
> minutes), due to needing a full puppet run. We'll be able to further reduce
> the 1 - 3.5 minute time with OpenStack upgrades.
>
> 2. As soon as an instance shows "active" it's ready to be logged into. No
> needing to wait until a puppet run occurs
>
> 3. Instances will be smaller on disk, since the initial instance has most
> packages that are installed from our base, ldap, and monitoring puppet
> classes.
>
> 4. A failed puppet run won't make an instance inaccessible. So, no more
> delete/recreate of instances will be needed when a puppet run fails.
>
> I don't think it will be as easy to make the lucid images, but I'll be
> trying to make that happen this week.
>
>
So, this easier than I thought. Now both lucid and precise work this way.
Enjoy!

- Ryan
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