[Bug 2142159] [NEW] Ubuntu MOTD getting DoSed with legitimate traffic every day at 06:25 (cron.daily time)

[Haw Loeung]

Public bug reported:

Hi,

Similar to LP:2034656 (and the older Ubuntu Archive LP:1554848 and
LP:1686470), we see a huge influx of client connections daily at around
cron.daily time.

I believe this is from `/usr/lib/update-notifier/update-motd-updates-
available` which is invoked by `/etc/cron.daily/update-notifier-common`.

I think we want to do something similar to APT updates witching to
systemd timers and spreading it out over the entire day.

** Affects: update-notifier (Ubuntu)
     Importance: Undecided
         Status: New

** Attachment added: "TTUlFJd4Ba.png"
   https://bugs.launchpad.net/bugs/2142159/+attachment/5947141/+files/TTUlFJd4Ba.png

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https://bugs.launchpad.net/bugs/2142159

Title:
  Ubuntu MOTD getting DoSed with legitimate traffic every day at 06:25
  (cron.daily time)

Status in update-notifier package in Ubuntu:
  New

Bug description:
  Hi,

  Similar to LP:2034656 (and the older Ubuntu Archive LP:1554848 and
  LP:1686470), we see a huge influx of client connections daily at
  around cron.daily time.

  I believe this is from `/usr/lib/update-notifier/update-motd-updates-
  available` which is invoked by `/etc/cron.daily/update-notifier-
  common`.

  I think we want to do something similar to APT updates witching to
  systemd timers and spreading it out over the entire day.

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