I created bug 1648426 to track discussion of which model config options
should (if indeed any...) propagate by default.
https://bugs.launchpad.net/juju/+bug/1648426
Michael
On 07/12/16 21:37, Michael Foord wrote:
Hey all,
I spent far longer than was reasonable working out why OIL were unable
to deploy workloads with juju 2.0.2 from the proposed stream.
https://bugs.launchpad.net/juju/+bug/1642609
The repro of the bug involved bootstrapping a xenial controller
creating several new models and deploying bundles into the models. The
Xenial machines would provision and trusty machines fail.
The cause of the problem is actually by design, although I would argue
still insane and needs fixing. The agent-stream (proposed) is a
model-config option that is not propagated to new models. So for new
models the default stream is "released". The xenial agent is cached in
the controller, so new models can provision xenial machines from the
cached agent. When trying to provision a trusty machine the new model
looks in it's agent-stream, released, which does not have 2.0.2 tools
and thusly fails.
There are three current workarounds:
* If we promote 2.0.2 from proposed to released this specific problem
goes away...
* After adding a new model you can set the agent-stream in the
model-config
* Bootstrapping with "--model-default agent-stream=proposed" allegedly
does propagate config options to new models
I am strongly of the opinion that at the very least a newly created
model should be capable of deploying workloads, which means that at
least a subset of model-config options should be propagated by default
to new models. This means at least, agent-stream, agent-metadata-url,
proxy settings etc.
All the best,
Michael Foord
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