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Story
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Resolution: Fixed
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Minor
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Evergreen - Milestone 1
For Milestone 1, we need to implement the fact the evergreen-client upgrades Jenkins.
From a high level, this should be done as follows:
- The client is instructed to perform an upgrade (Not sure: I think this is
JENKINS-50848) - It downloads what needs to be (plugins, new war) and puts them at the expected place for next startup (see below)
- Restart Jenkins to pick-up update
- Health-check it, see JEP-304
- If unhealthy, roll it back to previous, see JEP-302
Open questions
- What if the current state, i.e. even before upgrading, is unhealthy already?
- "expected place for next startup": we should probably define some location on the disk for caching those things, for instance to be able to revert in case we need to rollback without downloading things again, etc.
- is blocked by
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JENKINS-51272 Restore pusher service as a socket.io service with basic ping command support
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- Resolved
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Once the dependent ticket is resolved, this is functionally complete.