[Bug 1554848] [NEW] Please randomise automatic updates over a longer period

[Paul Gear]

Public bug reported:

Load on the main Ubuntu archive servers is rather peakish, and tends to
create a traffic peak on our Internet links at fairly regular times each
day, preventing customers from accessing the archive.  This impacts the
cloud archive mirrors using the ubuntu-repository-cache charm also,
because they are hitting a squid cache which is backed by the main
archive.  This effect will be even more pronounced under the recently-
announced automatic update policy for xenial.

One solution which would alleviate this to some extent would be to
spread the load over a longer period by increasing the random sleep time
in the daily update script from 30 minutes to, say, 1-2 hours.

** Affects: unattended-upgrades (Ubuntu)
     Importance: Undecided
         Status: Confirmed

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https://bugs.launchpad.net/bugs/1554848

Title:
  Please randomise automatic updates over a longer period

Status in unattended-upgrades package in Ubuntu:
  Confirmed

Bug description:
  Load on the main Ubuntu archive servers is rather peakish, and tends
  to create a traffic peak on our Internet links at fairly regular times
  each day, preventing customers from accessing the archive.  This
  impacts the cloud archive mirrors using the ubuntu-repository-cache
  charm also, because they are hitting a squid cache which is backed by
  the main archive.  This effect will be even more pronounced under the
  recently-announced automatic update policy for xenial.

  One solution which would alleviate this to some extent would be to
  spread the load over a longer period by increasing the random sleep
  time in the daily update script from 30 minutes to, say, 1-2 hours.

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