Hello! For a while we've had the ability to test changes in production on a single host (mw1017) using a special HTTP header (X-Wikimedia-Debug). This has proved useful for many when deploying changes in production and we are adding it to the SWAT deploy process.
See the steps at: https://wikitech.wikimedia.org/wiki/SWAT_deploys#Doing_the_deploy Namely: 4. After merge, the SWAT team member fetches the patch(es) to tin and then runs scap pull on mw1017 5. The submitter tests the change by using the instructions at X-Wikimedia-Debug#Staging_changes AND the SWAT team member checks the error logs 6. If there are no errors and the fix seems to work (if testable in that manner), then then SWAT team member deploys the patch to the entire fleet How to test on mw1017: https://wikitech.wikimedia.org/wiki/X-Wikimedia-Debug#Staging_changes To less exciting SWAT deploys, Greg -- | Greg Grossmeier GPG: B2FA 27B1 F7EB D327 6B8E | | identi.ca: @greg A18D 1138 8E47 FAC8 1C7D |
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