wiki-grav/pages/02.linux/unattended-upgrades/default.en.md

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Unattended Upgrades true

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Installation

# apt install unattended-upgrades

Configuration

NOTE: This configuration is tailored to my personal preferences. Feel free to do something else if you don't want what I'm doing

Enable automatic reboots

If necessary, the server will automatically reboot.
An example would be kernel updates.

Edit /etc/apt/apt.conf.d/50unattended-upgrades

...
Unattended-Upgrade::Automatic-Reboot "true";
...

Repo update time

Create an override file for apt-daily.timer using this command
$ sudo systemctl edit apt-daily.timer

Add these lines between the two comments

[Timer]
OnCalendar=*-*-* 2:00
RandomizedDelaySec=0

Host upgrade time

Create an override file for apt-daily-upgrade.timer using this command
$ sudo systemctl edit apt-daily-upgrade.timer

Add these lines between the two comments

[Timer]
OnCalendar=*-*-* 4:00
RandomizedDelaySec=0