It’s bullshit because I’ve never once installed anything other than Xcode from the App Store. Nothing else. It’s not a walled garden in any way, shape, or form.

It’s a full, true UNIX desktop OS.

Apple will randomize your MAC when connecting to networks to maintain privacy. It’s a per-network setting that can be toggled off for your own private network if you want to.

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Why is port 22 open? Is this on your router as well or just the server?

This is SSH, which you should pretty much never have open (to the internet! Local is fine) MC is by default 25565. You will have every bot on the internet probing that port.

You’re saying that data centers are replacing batteries constantly…just imagine the labor costs on that (and the down time), not even considering the material cost.

I’m the tech doing the battery replacements. The big boy UPSes are typically a 3-5 year replacement cycle. Something like this:

(I just picked the last one on my phone so not a great picture, they’re about the size of a small refrigerator)

On rack mount and desktop style UPSes 18-36 months isn’t unreasonable. Some of the smaller UPSes, like APC 750s, go through batteries even faster. My personal theory is that they just get and stay too hot.

There is typically zero downtime while servicing any of them, every critical system has redundant power supply and battery replacements usually don’t interrupt power output anyway. It would take multiple failures to cause any sort of significant downtime, and if it would, we just do them during scheduled downtime.

They switched distros and still had issues. That and the general slowdown with high disk usage is a classic sign of failing drives.

Chasing hardware issues by playing with software only wastes time, so ruling out the hardware first is a good idea

Looks like failing storage. You may be able to initiate a SMART self-test from the BIOS, or you can use the manufacturers tools. Seatools works on non-seagate drives and has a live USB option.

Do the short test first, if it passes, do the long one to confirm. Short test takes about 15 minutes usually, the long one can take a couple of hours.