APC Back-UPS 850.
I’d guess that those maybe don’t use the same protocol as an APC Easy UPS. There’s a (widely-used) Linux software package, Network UPS Tools, which can talk to the APC UPSes that I’ve seen in the past.
https://networkupstools.org/stable-hcl.html
It has Back-UPS devices listed in the hardware compatibility list as well as devices from many other manufacturers, but I don’t see any reference to an “Easy UPS”.
Right now when updates get applied to the NAS, if it gets powered off during the update window that would be really bad and inconvenient require manual intervention.
You sure? I mean, sure, it’s possible; there are devices out there that can’t deal with power loss during update. But others can: they’ll typically have space for two firmware versions, write out the new version into the inactive slot, and only when the new version is committed to persistent storage, atomically activate it.
Last device I worked on functioned that way.
you might lose data in flight if you’re not careful.
That’s the responsibility of the application if they rely on the data to be persistent at some point; they need to be written to deal with the fact that there may be in-flight data that doesn’t make it to the disk if they intend to take other actions that depend on that fact; they’ll need to call fsync() or whatever their OS has if they expect the data to be on-drive.
Normally, there will always a period where some data being written out is partial: the write() could complete after handing the data off to the OS’s buffer cache. The local drive could complete because data’s in its cache. The app could perform multiple write() calls, and the first could have completed without the second. With a NAS, the window might be a little bit longer than it otherwise would be, but something like a DBMS will do the fsync(); at any point, it’d be hypothetically possible for the OS to crash or power loss or something to happen.
The real problem, that I need an nas for, is not the loss of some data, it’s when the storms hit and there’s flooding, the power can go up and down and cycle quite rapidly. And that’s really bad for sensitive hardware like hard disks. So I want the NAS to shut off when the power starts getting bad, and not turn on for a really long time but still turn on automatically when things stabilize
Like I said in the above comment, you’ll get that even without a clean shutdown; you’ll actually get a bit more time if you don’t do a clean shutdown.
Because this device runs a bunch of VMs and containers
Ah, okay, it’s not just a file server? Fair enough – then that brings the case #2 back up again, which I didn’t expect to apply to the NAS itself.
I’d guess that those OSes may not permit arbitrary software without administrative privileges to initiate shutdowns. That’s the case on Linux.
I’m assuming that your goal here is automatic shutdown when the UPS battery gets low so you don’t actually have the NAS see unexpected power loss.
This isn’t an answer to your question, but stepping back and getting a big-picture view: do you actually need a clean, automatic shutdown on your Synology server if the power goes out?
I’d assume that the filesystems that the things are set up to run are power-loss safe.
I’d also assume that there isn’t server-side state that needs to be cleanly flushed prior to power loss.
Historically, UPSes providing a clean shutdown were important on personal computers for two reasons:
Some filesystems couldn’t deal with power loss, could produce a corrupted filesystem. FAT, for example, or HFS on the Mac. That’s not much of an issue today, and I can’t imagine that a Synology NAS would be doing that unless you’re explicitly choosing to use an old filesystem.
Some applications maintain state and when told to shut down, will dump it to disk. So maybe someone’s writing a document in Microsoft Word and hasn’t saved it for a long time, a few minutes will provide them time to save it (or the application to do an auto-save). Auto-save usually partially-mitigates this. I don’t have a Synology system, but AFAIK, they don’t run anything like that.
Like, I’d think that the NAS could probably survive a power loss just fine, even with an unclean shutdown.
If you have an attached desktop machine, maybe case #2 would apply, but I’d think that hooking the desktop up to the UPS and having it do a clean shutdown would address the issue – I mean, the NAS can’t force apps on computers using the NAS to dump state out to the NAS, so hooking the NAS up that way won’t solve case #2 for any attached computers.
If all you want is more time before the NAS goes down uncleanly, you can just leave the USB and RS-232 connection out of the picture and let the UPS run until the battery is exhausted and then have the NAS go down uncleanly. Hell, that’d be preferable to an automated shutdown, as you’d get a bit more runtime before the thing goes down.
Yes. I wouldn’t be preemptively worried about it, though.
Your scan is going to try to read and maybe write each sector and see if the drive returns an error for that operation. In theory, the adapter could respond with a read or write error even if a read or write worked or even return some kind of bogus data instead of an error.
But I wouldn’t expect this to likely actually arise or be particularly worried about the prospect. It’s sort of a “could my grocery store checkout counter person murder me” thing. Theoretically yes, but I wouldn’t worry about it unless I had some reason to believe that that was the case.
IIRC Russia was talking about detaching their modules and using them to help bootstrap some new station. So I dunno if those will get brought down.
That being said, that was also when that rather pugnacious guy was running Roscosmos, and I dunno if doing a new space station is the top of Russia’s priority list for their limited budget.
kagis
kagis further
It looks like they canceled the idea of reusing the Russian ISS modules back in 2021. So I guess those are destined for SpaceX’s deorbit too.
https://en.wikipedia.org/wiki/Orbital_Piloted_Assembly_and_Experiment_Complex
The Orbital Piloted Assembly and Experiment Complex (Russian: Орбитальный Пилотируемый Сборочно-Экспериментальный Комплекс, Orbital’nyj Pilotirujemyj Sborochno-Eksperimental’nyj Kompleks;[1][2] ОПСЭК, OPSEK) was a 2009–2017 proposed third-generation Russian modular space station for low Earth orbit. The concept was to use OPSEK to assemble components of crewed interplanetary spacecraft destined for the Moon, Mars, and possibly Saturn. The returning crew could also recover on the station before landing on Earth. Thus, OPSEK could form part of a future network of stations supporting crewed exploration of the Solar System.
In early plans, the station was to consist initially of several modules from the Russian Orbital Segment (ROS) of the International Space Station (ISS). However, after studying the feasibility of this, the head of Roscosmos stated in September 2017 the intention to continue working together on the ISS.[3] In April 2021, Roscosmos officials announced plans to exit from the ISS programme after 2024, stating concerns about the condition of its aging modules. The OPSEK concept had by then evolved into plans for the Russian Orbital Service Station (ROSS), which would be built without modules from the ISS, and was anticipated to be launched starting in the mid-2020s.[4][5]
https://en.wikipedia.org/wiki/Russian_Orbital_Service_Station
The Russian Orbital Service Station (Russian: Российская орбитальная служебная станция, Rossiyskaya orbital’naya sluzhebnaya stantsiya) (ROSS, Russian: РОСС)[3] is a proposed Russian orbital space station scheduled to begin construction in 2027. Initially an evolution of the Orbital Piloted Assembly and Experiment Complex (OPSEK) concept, ROSS developed into plans for a new standalone Russian space station built from scratch without modules from the Russian Orbital Segment of the ISS.[4]
I still dunno if they’re gonna get the money for a new space station. Like, deciding to have a war in Ukraine may have kind of killed off the viability of doing a new space station.
What hardware and Linux distro would you use in this situation?
The distro isn’t likely to be a factor here. Any (non-super-specialized) distro will be able to solve issues in about the same way.
I mean, any recommendation is going to just be people mentioning their preferred distro.
I don’t know whether saltwater exposure is a concern. If so, that may impose some constraints on heat generation (if you have to have it and storage hardware in a waterproof case).
If there’s a better way to configure Docker, I’m open to it, as long as it doesn’t require rebuilding everything from scratch.
You could try using lvmcache (block device level) or bcachefs (filesystem level caching) or something like that, have rotational storage be the primary form of storage but let the system use SSD as a cache. Dunno what kind of performance improvements you might expect, though.
The AI trials used a combination of “smart” CCTV cameras that can detect objects or movements from images they capture and older cameras that have their videofeeds connected to cloud-based analysis.
Enough of these linked together coupled with facial recognition, and Amazon’s got the means to track people at scale.
Hmm. They might have gotten that discount because of using their alternate payment system as leverage, so might have been worthwhile.
Make it thicker.
Battery: 61Wh
No 100Wh battery. :-/
I would suggest, unless you have a very unusual situation, that you’re going to have an easier time of it with a keyboard and display.
If your computer can do HDMI out, you can use a television as display.
In all seriousness, unless this is some kind of super-exotic situation (like, you’re on a sailboat in the middle of the Pacific and are suddenly needing to set up a Debian server) I would probably get an inexpensive USB keyboard to keep around. Even if you don’t normally need it (like, you use a laptop or something) there are a number of situations that it solves, like “one of my laptop keys has just stopped working” or “I actually need to work on some kind of computer that doesn’t have an integrated keyboard”.
kagis
https://www.amazon.com/sgmedila-Waterproof-Foldable-Flexible-Dustproof/dp/B0CXTHH7QS/
That’s not gonna be a very pleasant typing experience, but it’s under $4 for two, if you’re determined to spend as little as possible.
If you can’t get access to a television, here’s a small, 640x480 USB/HDMI display under $50:
https://www.amazon.com/Capacitive-Compatible-Raspberry-Resolution-Interface/dp/B0CFJDTM5X/
I’d probably get a larger display, maybe used – I mean, maybe you think that you’re never gonna need to look at a computer’s output again, but you might find yourself troubleshooting a machine like this one, and 640x480 is a kind of significant limitation – but that’s at least a baseline.
If you specifically don’t want a keyboard, and if you have some other device with a display and text input and USB (well, or serial) support, I’d bet that the Debian installer can probably handle an RS-232 serial console install.
kagis
Yup.
https://p5r.uk/blog/2020/instaling-debian-over-serial-console.html
But I’m guessing that you don’t have the serial hardware. Having a USB-to-serial adapter is another thing that I keep one of around because every now and then I need to work on headless devices that have a serial interface, but I’ll concede that the serial port is getting pretty elderly.
I’d probably get a USB-to-serial male and USB-to-serial female adapter if neither end has an existing serial port (which these days, with desktop hardware, may be very possible). Something like this:
https://www.amazon.com/OIKWAN-Adapter-Converter-Compatible-Windows/dp/B0BL1MRV6H/
and
https://www.amazon.com/Serial-Adapter-Chipset-Compatible-Windows/dp/B0CT8MRT5B/
But then you have to be sure that you can get your machine to boot into the Debian install media. On machines that are designed to be run headless, routers and such, it’s common for the BIOS to support a serial interface. On desktop machines…not so much. So if it’s already configured to boot off USB, that may be fine, but if it’s not, well…
Debian also has a fully-automated installer, as long as you can set your machine up to boot into it without a keyboard or display:
That kind of thing is normally more used to set up VMs or manufacture hardware.
I would be very careful with that thing and probably wipe it after you use it, since it’s gonna be a USB key that wipes computers if you reboot and they’re set to boot off USB.
It almost certainly isn’t a great fit for your use case – like, the time you’re probably going to expend setting it up isn’t going to be worth whatever you’d save spending on hardware – but mentioning it for completeness.
Aight, but db0 had something about it obscuring the server location, IIRC.
I’d probably use a VPS myself.
I seem to recall db0 saying that lemmy.dbzer0.com is behind some sort of reverse proxy. I assume that they’re in the same boat as OP.
looks
$ host -t a lemmy.dbzer0.com
lemmy.dbzer0.com has address 51.77.203.116
$ whois 51.77.203.116
[snip]
role: OVH Technical Contact
address: OVH SAS
address: 2 rue Kellermann
address: 59100 Roubaix
address: France
admin-c: OK217-RIPE
tech-c: GM84-RIPE
tech-c: SL10162-RIPE
nic-hdl: OTC2-RIPE
abuse-mailbox: [email protected]
mnt-by: OVH-MNT
created: 2004-01-28T17:42:29Z
last-modified: 2014-09-05T10:47:15Z
source: RIPE # Filtered
% Information related to '51.77.0.0/16AS16276'
route: 51.77.0.0/16
origin: AS16276
mnt-by: OVH-MNT
created: 2018-03-07T09:24:45Z
last-modified: 2018-03-07T09:24:45Z
source: RIPE
$
I don’t know if that’s a VPS, but looks like they’re using OVH.
Well, there’s the obvious answer, that you actually have an Nvidia card. I think I’d probably consider taking a look at the card and at photos of new cards of both models and see which it looks like.
From a software standpoint, I have a hard time believing that you’re misdetecting the type of card.
I don’t know anything about Proxmox, but I understand that it’s some sort of platform used to virtualize systems. It apparently, based on a quick search, has some kind of support for Nvidia passthrough, called vGPU. If you’re looking from inside a virtualized environment, is it possible that you’re looking at a virtual GPU? That seems like a long shot, since I assume that if your GPU is AMD, that a virtual Nvidia GPU would be non-functional – it doesn’t look like this vGPU thing can use a host AMD GPU-- but I can’t think of any other way that you’re going to wind up detecting an Nvidia card that you don’t have.
I don’t even mind paying for YouTube, but if I do that, I don’t want Google logging and data-mining me, and AFAICT, that’s not on offer with the existing YouTube Premium service – just lets Google link that to financial data.
Right now, I believe that they just offer ad-free service.
I mean, I think that in the long run, trying to fight an arms race against Google on ad visibility is a losing proposition, but this isn’t really all that hard to defeat from a technical standpoint. You just identify ads relative to timestamp offsets from a given matched frame. Use some kind of fuzzy (needs to?be fuzzy because lossy compression will alter frames a bit) hash to identify that frame, and use an identifier where it’s computationally-cheap to reject most frames.
So, like, “ad ranging from frame hash 18037gb5028de882 + .53 sec lasting 30 seconds”.
I dunno how Sponsorblock works – I don’t use it – but I assume that it has some human manually identify a time. In picking a frame to use for the offset, the software needs to hash each frame in the video. Then when someone flags a frame as starting an ad sequence, search backwards from the identified time, and pick a frame to match against, look for a frame with a unique hash in the video.
There’d be some preprocessing time, but I imagine that the human interface would basically be the same. Some overhead to playback software, because it has to generate the hash for each frame while playing. If there’s no Sponsorblock information for a given video, don’t need to generate the hashes, though.
It does kind of drive home an argument that it’d be nice to have Stable Diffusion extensions, if not the whole program, run in isolation. I don’t know how hardened the GPU drivers are, and those have to be exposed.
I did some time back. I don’t recall it being incredibly difficult to get running. What hardware are you trying to run it on?