Upcoming changes for the ec2 provider
mark at ubuntu.com
Fri Oct 7 11:33:03 UTC 2016
On 06/10/16 16:33, Andrew Wilkins wrote:
> On Fri, Oct 7, 2016 at 7:26 AM Mark Shuttleworth <mark at ubuntu.com
> <mailto:mark at ubuntu.com>> wrote:
> On 06/10/16 16:14, Andrew Wilkins wrote:
>> On Thu, Oct 6, 2016 at 8:30 PM Rick Harding
>> <rick.harding at canonical.com <mailto:rick.harding at canonical.com>>
>> Thanks Andrew, this is great to hear. Can I bug you about
>> details as to how it works? Does this introduce their pricing
>> API as a blocker to deploying with Juju? If they introduce a
>> change to the API we miss or their API goes down is there any
>> sort of cache of the info that users can continue with until
>> service is restored?
>> So I said API because that's what it's called by AWS, but IMO
>> it's a bit of an overstatement. It's just a set of (very large)
>> JSON files in a well defined location. Very large, as in 48M for
>> the one file that we need.
>> Because it's so big, pulling that down each time you go to
>> bootstrap isn't really reasonable. So for now, we're doing that
>> at build time, and the information is still hard coded into the
>> client. The process can be automated, so there shouldn't be a
>> great lag time between updates and bringing them into a Juju release.
>> We intend to update Juju later to periodically pull down the JSON
>> file server-side, asynchronously, so a running controller will
>> get the updates without us having to release a new Juju or you
>> having to upgrade.
> Could we not process the file on our side regularly and publish a
> (smaller) just-what-juju-needs bit of json at a well-known
> location ourselves?
> Yes, we could. There was some discussion about doing that, and someone
> brought up concerns that I can't recall (or find) now. We will explore
> this option further.
This feels to me like it's a simple extension of what we currently
provide to 'update-clouds'. It should be a general thing, not just for
one specific provider.
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