I had a number of great conversations on @cnab_spec while at #KubeCon. On the flight home I've written up what it's all about https://www.morethanseven.net/2018/12/15/what-is-cnab/ …
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Thanks for the writeup, Gareth. How does this compare with Docker Application Bundles, App Registry, Nulecule, and/or Elasticbox?
Doesn't seem especially cloud native. (1) Imperative. (2) Obscures but doesn't abstract the deployment environment. (3) Ditto for the deployment tools, which all have very different upgrade behaviors. (4) Lacks observability. (5) Not GitOps friendly.
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I do understand the goal of deployment tool interoperability, though. CI tools/systems have a similar challenge. For instance, Jenkins plugins are coupled to Jenkins.
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I'd say all of those are properties of the invocation image, rather than CNAB more generally. It's possible to build bundles that are declarative, abstract the deployment environment, work with pull-based workflows, etc. The spec isn't opinionated about those things though
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I think more examples will help here. The current examples demonstrate parts of the spec, but don't really say much about operator or developer experience
End of conversation
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