[tor-bugs] #29421 [Internal Services/Tor Sysadmin Team]: Install the qos apache module

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#29421: Install the qos apache module
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 Reporter:  ln5     |          Owner:  ln5
     Type:  task    |         Status:  assigned
 Priority:  Medium  |      Component:  Internal Services/Tor Sysadmin Team
  Version:          |       Severity:  Normal
 Keywords:          |  Actual Points:
Parent ID:          |         Points:
 Reviewer:          |        Sponsor:
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 When geyeri, serving donate.tpo, got hammered in December last year, we
 added the qos module to its apache2 and configured it to allow for at most
 11 or so simultaneous connections from a single source IP address. This
 saved donate.tpo, at the price of possibly making the site unusable for
 some people behind the same IP address.

 We should do that for the host serving trac and see if it helps with the
 sad trac situation when we're being crawled.

 cf
 https://trac.torproject.org/projects/tor/wiki/org/meetings/2019BrusselsAdminTeamMinutes#Trac

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/29421>
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