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Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).

Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word "Linux" in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.

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How to stagger automated upgrade? (lemmy.ml)

submitted 4 months ago* (last edited 4 months ago) by remram@lemmy.ml to c/linux@lemmy.ml

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I am using unattended-upgrades across multiple servers. I would like package updates to be rolled out gradually, either randomly or to a subset of test/staging machines first. Is there a way to do that for APT on Ubuntu?

An obvious option is to set some machines to update on Monday and the others to update on Wednesday, but that only gives me only weekly updates...

The goal of course is to avoid a Crowdstrike-like situation on my Ubuntu machines.

edit: For example. An updated openssh-server comes out. One fifth of the machines updates that day, another fifth updates the next day, and the rest updates 3 days later.

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[–] remram@lemmy.ml 5 points 4 months ago (1 children)

So you can test the updates before fixing production.

My question is how to do that with APT.

[–] lnxtx@feddit.nl 7 points 4 months ago* (last edited 4 months ago) (1 children)

I think there is no a out-of-the-box solution.
You can run security updates manually, but it's too much to do.

Try to host apt mirrors in different stages, with unattended-updates tuned on.
Devel will have the latest.
Staging the latest positively tested on the devel.
Production the latest positively tested on the staging.

[–] remram@lemmy.ml 7 points 4 months ago

Making multiple mirrors seems like the best solution. I will explore that route.

I was hoping there was something built into APT or unattended-upgrades, I vaguely remembered such a feature... what I was remembering was probably Phased Updates, but those are controlled by Ubuntu not by me, and roll out too fast.