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https://issues.apache.org/jira/browse/WHIRR-260?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13063772#comment-13063772
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Adrian Cole commented on WHIRR-260:
-----------------------------------
sorry. there is no guide outside the source code and amazon's documentation,
http://docs.amazonwebservices.com/AWSEC2/latest/APIReference/index.html?query-apis.html
I generally recommend looking at the test cases for usage example, or posting
to the jclouds-dev google group, as I'm better at following-up there, and also
others can benefit from the questions. The more interesting test case to view
is SpotInstanceClientLiveTest, which uses the api directly and
AWSEC2ComputeServiceLiveTest.testExtendedOptionsAndLogin() which uses the spot
price option on the portable interface.
In the code, AWSEC2CreateNodesInGroupThenAddToSet actually manages creating the
spot instance request. The way jclouds manages this is that it looks for both
regular reservations and also spot requests when listing nodes. The
convergence of these 2 is what you'll see in a listNodes command
(AWSEC2ListNodesStrategy ex. does these multiple listings in parallel)
If there's an error on the parameters requesting nodes, you'll receive an
HttpResponseException in the 400 range from ec2 itself. The other condition
you should be aware of is when the spot request goes through, but perhaps takes
longer to provision the nodes than the jclouds default timeout
(jclouds.compute.timeout.node-running), something I've not seen happen.
I've added some of these notes here, and feel free to revise:
http://code.google.com/p/jclouds/wiki/EC2
Backtype were the first users of the Spot Price feature, last year. I can
connect you, if you want some behavioral experience with this in the wild.
Cheers!
-A
> Support Spot Instances
> ----------------------
>
> Key: WHIRR-260
> URL: https://issues.apache.org/jira/browse/WHIRR-260
> Project: Whirr
> Issue Type: New Feature
> Reporter: Adrian Cole
> Assignee: Andrei Savu
> Fix For: 0.6.0
>
> Attachments: WHIRR-260.patch, WHIRR-260.patch
>
>
> note java support is via jclouds, scheduled for beta-10 release
> https://github.com/jclouds/jclouds-examples/tree/master/ec2-computeservice-spot
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