upgrade-juju can downgrade.. and causes hook executions

[Kapil Thangavelu]

juju upgrade-juju can downgrade.. not clear that its a supported use case. also upgrade-juju ends up hooks on services (config-changed). Its not clear that it should, nothing has changed in terms of config for the service units.

ie on a 1.14.0 environment i ran

 $ juju upgrade-juju --version=1.13.3

without complaint..

[John A Meinel (jameinel)]

It was actually intended when upgrade-juju was designed. There has been some discussion whether we want to keep this behavior.

[John A Meinel (jameinel)]

To be clear, it was intended that "juju upgrade-juju --version $OLD" could downgrade your environment. I don't know about the config-changed hook.

[Kapil Thangavelu (hazmat)]

fair enough re upgrade-juju doing downgrades, although its not clear thats
safe (ie untested), and almost certainly won't be if cross major versions.
the config changed part still feels a bit suspect. do we have any automated
testing around upgrades in long standing envs?

On Sun, Sep 22, 2013 at 7:56 AM, John A Meinel <email address hidden>wrote:

> To be clear, it was intended that "juju upgrade-juju --version $OLD"
> could downgrade your environment. I don't know about the config-changed
> hook.
>
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