Hi all,

We've deployed a HDP 2.3 cluster with Ambari 2.2 using the Blueprints
feature, which has worked out great for us. We have a bit of a complicated
internal structure, but the key thing is that another department manages
the infrastructure, and we provide the standard operating procedures.

*So:* is there any way to declaratively describe the state we want the
cluster to be in *after* it's already been deployed?

I'm aware we could use the Ambari REST APIs, and provide some kind of
script to execute those as needed, but I wondered if there was a "better"
way.

We're not planning on moving the service hosts around right now, so I'm
also wondering if destroying and re-deploying a new Blueprint is a
good/OK/bad/terrible idea - I believe it doesn't stop the services when I
destroy the cluster, so that might be a simpler approach.

Does anybody have any idea if there's a simple "built-in" way to do this,
or is it pretty much up to us to define how to apply changes to an existing
cluster?

Any insight appreciated,
*Craig Roberts*

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