Warn when trying to apply changes that are doomed to fail
Ops Manager UI should show a warning when trying to publish changes while a node is disabled (shut down).
Why ? See this example:
- user publishes a change asking for node 1 to be disabled
- publication is OK, node 1 is stopped by Ops Manager
- user publishes a change asking for node 2 to restart. Ops Manager UI accepts this change...
- ...but publication will fail, with node 2 agent waiting indefinitely for node 1 to get healthy
This is really disturbing because Ops Manger accepts a change it knows it can't deliver.
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Sylvain
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