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path: root/debian/apt.apt-compat.cron.daily
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2016-04-01Use systemd.timer instead of a cron jobMichael Vogt
The rational is that we need to spread the load on the mirrors that apt update and unattended-upgrades cause. To do so, we leverage the RandomizeDelay feature of systemd. The other advantage is that the timer is not run at a fixed daily.daily time but instead every 24h. This also fixes the problem that the randomized deplay in the current apt.cron.daily causes other cron jobs to be deplayed. A compatibility cron job is also provided for systems that do not use systemd. Note that the time is fired two times a day, but the logic inside of apt.systemd.daily will ensure (via stamp files) that the servers are hit at most every 24h. Firing two times a day helps with the worst case update time and it also helps with systems that are not always on. LP: #246381, #727685 Closes: #600262, #709675, #663290