https://bugzilla.wikimedia.org/show_bug.cgi?id=68199

--- Comment #11 from [email protected] ---
(In reply to Dan Andreescu from comment #2)
> Also found
> that only EQIAD hosts had their traffic increase abnormally, [...]

I had expected to see amssq47 (esams) being called out, as it picked
up traffic just as ULSFO's went down.

That's just a coincidence. Right?

(In reply to Jeff Gage from comment #9)
> Approximate timeline:
> 2014-07-09 16:00 UTC: Mark reroutes traffic to EQIAD

While I see that the timelime is labeled as “approximate”, but since
we're looking at numbers of hourly at hourly granularity ...

Looking at the graphs, they take the deep downward dive already ~4-5
hours earlier. This earlier time also nicely matches Mark's rerouting
commit [1], which is shows as gotten merged on 2014-07-09 10:40 UTC in
gerrit.

> 2014-07-09 22:45 UTC: Mark restores traffic to ULSFO

While that might be right, it is neither reflected by graphs, nor the
puppet repo.

Looking at the graphs, they start to rise only ~1-2 hours later. This
later time again nicely aligns with the puppet repo. There, Brandon's
(not Mark's) rerouting commits [2] are shown in as gotten merged
between 2014-07-10 00:38 and 2014-07-10 08:37.



[1] https://gerrit.wikimedia.org/r/#/c/144934/

[2] They are a series of commits between
  https://gerrit.wikimedia.org/r/#/c/145182/
  https://gerrit.wikimedia.org/r/#/c/145221/

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