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I’ve learned a number of tools I’d never used before, and refreshed my skills from when I used to be a sysadmin back in college. I can also do things other people don’t loudly recommend, but fit my style (Proxmox + Puppet for VMs), which is nice. If you have the right skills, it’s arbitrarily flexible.
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What electricity costs in my area. $0.32/KWh at the wrong time of day. Pricier hardware could have saved me money in the long run. Bigger drives could also mean fewer, and thus less power consumption.
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Google, selfhosting communities like this one, and tutorial-oriented YouTubers like NetworkChuck. Get ideas from people, learn enough to make it happen, then tweak it so you understand it. Repeat, and you’ll eventually know a lot.
I think who you mean by tech community here is important too. CEOs? Their pay depends in part on them not listening.
Enthusiasts? Engineers? People who use technology more than incidentally? Left-leaning tech circles? Some have heard him, the idea of enshittification has spread well.
Sometimes ideas don’t spread very much until they do in a big way. This feels to me like one where that point exists, and people will take notice when it’s hit.