Purpose of instance_states in manifest?

Jones, Daniel

Hi all,

Two questions:

1. What is the intended use of `bosh download manifest`?

2. What is the purpose of instance_states in a manifest?

I ask as I did a `bosh download manifest` because I was too lazy to go and find where the actual deployment manifest was kicking around on a server. I knew there had been no changes, so was expecting it to return an identical manifest to that which was used to create the deployment originally.

It was only upon closer inspection I noticed some "instance_states" fields for particular jobs, where some of the values were "recreate". This figures, as I'd done at least one `bosh recreate` before the `bosh download manifest`.

Is the intention of `bosh download manifest` to express the internal desired state of a deployment in YAML form? Or is it intended to give one a means to access a manifest for a deployment if the original is lost?

What does the "instance_states" field do? It seems a bit odd to have a verb like "recreate" in a declarative configuration file. The source code says<https://github.com/cloudfoundry/bosh/blob/master/bosh-director/lib/bosh/director/deployment_plan/job.rb> that these are virtual states, and I'm not really sure what the purpose of them is.

Any and all information gratefully appreciated!

Daniel Jones

Daniel Jones I 723 6362 I +44 (0)1732 776362 I Cell: +44 (0)79 8000 9153
Fidelity Worldwide Investment I 130 Tonbridge Road, Hildenborough, Kent, TN11 9DZ

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