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Upgrade vs Reinstall
(lemmy.world)
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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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It depends on what you need to upgrade/do. I usually upgrade stuff, but at the same time I also have templates in case I quickly need to spin up something new.
If that's the case, I seed the new instance whatever conf files are needed and I am up and running quickly. Consider that in my work environment we rarely use containers (more of a philosophy at this point than a real reason, since we also have a relatively big K8s cluster for big data).
Linux sysadmin here, for the past 25 years.