this post was submitted on 01 Jul 2024
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Linux
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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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If I understand it correctly, layering an application is no more dangerous than a regular install on a non atomic os. In other words, every piece of software you have installed on normal fedora desktop is not containerized, if it's software you were going to install anyways, layering it is the same as before (albeit significantly slower than install and update).
But that means that you get great benefits because 99% of your software packages are properly containerized
True~ish.
There's an important caveat though; for whatever reason,
rpm-ostree
can outright fail to upgrade (due to conflicts related to layered packages) while an issue like that is more rare on traditional Fedora anddnf
. Thankfully, I've never had a problem that I couldn't solve withrpm-ostree reset
run on a (previously) pinned deployment (throughsudo ostree admin pin <insert number>
). However, when used irresponsibly, this (i.e. layering) can outright destroy your otherwise very robust 'immutable' distro.It's easier to teach people to be cautious than to teach how they should act accordingly. Hence, uBlue's documentation tends to be more conservative in order to protect (especially newer) users from shooting themselves in the foot.
This is true, because each layered package is reinstalled every time a new compose is pulled. If you layer 100 packages, 100 packages get re-installed. Which massively slows the update process
Ah, that makes much more sense, now!