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Automate and/or better-document varnish ban procedure for operations staff, so it can be accomplished with more speed and confidence in outage conditions
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Description

This is a followup task, generated from https://wikitech.wikimedia.org/wiki/Incident_documentation/20160126-20160126-WikimediaDomainRedirection#Actionables.

During a recent outage condition, operations had to perform multiple cache purges/bans. The actionables include better documentation of this procedure, as wikitech currently is somewhat lacking. Wikitech's info mainly comprises of: One-off purges - Don't do this. Consult a varnish specialist first. It also includes very limited info about varnishadm ban but not a detailed use case for our systems.

Event Timeline

RobH created this task.Jan 26 2016, 9:48 PM
RobH assigned this task to BBlack.
RobH raised the priority of this task from to Normal.
RobH updated the task description. (Show Details)
RobH added subscribers: RobH, akosiaris, mark, Joe.
Restricted Application added a subscriber: Aklapper. · View Herald TranscriptJan 26 2016, 9:48 PM
RobH added a comment.Jan 26 2016, 9:49 PM

I initially assigned this to @BBlack, but it can be accomplished by anyone who understands varnish and the use of ban commands. (I've CC'd Mark, Alex, and Giuseppe since they were all responsive during the outage and/or sending these commands.)

BBlack closed this task as Resolved.Jan 27 2016, 12:00 PM