This bug was fixed in the package apt - 1.4.6~17.04.1
---------------
apt (1.4.6~17.04.1) zesty; urgency=medium
* apt.systemd.daily: Do not pass -d to unattended-upgrade for the download
job. This actually enables debugging. Instead check if unattended-upgrade
supports an option --download-only (which is yet to be implemented) and use
that (Closes: #863859)
apt (1.4.5) unstable; urgency=medium
* Fix parsing of or groups in build-deps with ignored packages (LP:
#1694697)
apt (1.4.4) unstable; urgency=medium
[ Alan Jenkins ]
* apt.systemd.daily: fix error from locking code (Closes: #862567)
apt (1.4.3) unstable; urgency=medium
[ Julian Andres Klode ]
* Do not try to (re)start timers outside 'apt' package (Closes: #862001)
[ Miroslav Kure ]
* Updated Czech translation of apt (Closes: #861943)
apt (1.4.2) unstable; urgency=medium
[ Julian Andres Klode ]
* Run unattended-upgrade -d in download part
* apt.systemd.daily: Add locking
* Split apt-daily timer into two (LP: #1686470)
[ Matt Kraai ]
* bash-completion: Fix spelling of autoclean (Closes: #861846)
apt (1.4.1) unstable; urgency=medium
[ Julian Andres Klode ]
* systemd: Rework timing and add After=network-online (LP: #1615482)
* debian/rules: Actually invoke dh_clean in override_dh_clean
[ Unit 193 ]
* apt-ftparchive: Support '.ddeb' dbgsym packages
-- Julian Andres Klode <j...@debian.org> Thu, 01 Jun 2017 10:50:26
+0200
** Changed in: apt (Ubuntu Zesty)
Status: Won't Fix => Fix Released
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https://bugs.launchpad.net/bugs/1615482
Title:
apt-daily timer runs at random hours of the day
Status in apt package in Ubuntu:
Fix Released
Status in apt source package in Xenial:
Won't Fix
Status in apt source package in Yakkety:
Won't Fix
Status in apt source package in Zesty:
Fix Released
Bug description:
apt, from 1.2.10 onwards (ie any version in Xenial, onwards) uses a
systemd timer instead of a cron.daily job. This is a good thing,
decoupling apt daily runs from the rest of cron, and ensuring other
cron.daily jobs are not blocked by up to half an hour by the default
settings of unattended-upgrades.
However the policy chosen is to have the apt daily script run at a
random hour of the day in a wrong headed attempt to reduce server
load. This has the side effect of running unattended-upgrades at
random hours of the day — such as business hours — rather than being
confined to between 6:25am and 6:55am, using the defaults.
A better policy would be to have the script activate at 6:00am plus an
interval of 20 minutes at one second intervals reducing the impact of
timezone population spikes, while still allowing unattended-upgrades
to run within a predictable interval, before 7am.
At the very least, some sort of note in the NEWS file detailing the
new behaviour would be welcome.
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/apt/+bug/1615482/+subscriptions
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