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Provide a simple read-only maintenance mode for repositories

Authored by epriestley on Aug 29 2019, 8:05 PM.



Ref T13393. While doing a shard migration in the Phacility cluster, we'd like to stop writes to the migrating repository. It's safe to continue serving reads.

Add a simple maintenance mode for making repositories completely read-only during maintenance.

Test Plan

Put a repository into read-only mode, tried to write via HTTP + SSH. Viewed web UI. Took it back out of maintenance mode.

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Event Timeline

This revision was not accepted when it landed; it landed in state Needs Review.Aug 29 2019, 10:23 PM
This revision was automatically updated to reflect the committed changes.