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Cake day: June 27th, 2023

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  • Probably not what you’re asking for, but I have an impression, that your primary motivation is curiosity and just good feeling of using the open platform, so I figured I’ll mention it.

    I’m using ESP32-C3 boards with some sensors and ESPHome to monitor air quality in my house. The board is RISC-V based and can be bought for real cheap. (single digit $ price generally) ESPHome is quite easy to work with and (If you’re realistic with your expectations around very low power device) also quite powerful.

    Honestly the ESPHome itself is almost too good if you’re really curious as it abstracts the differences between various boards quite well. You’re just editing a yaml file to define your desired functionality.

    Even if you’re hesitant to do some soldering, you can get pretty far if you buy board and sensors with pre-soldered pins and some jumper wires.





  • Let me be more clear: devs are not required to release binaries at all. Bit they should, if they want their work to be widely used.

    Yeah, but that’s not there reality of the situation. Docker images is what drives wide adoption. Docker is also great development tool if one needs to test stuff quickly, so the Dockerfile is there from the very beginning and thus providing image is almost for free.

    Binaries are more involved because suddenly you have multiple OSes, libc, musl,… it’s not always easy to build statically linked binary (and it’s also often bad idea) So it’s much less likely to happen. If you tried just running statically linked binary on NixOS, you probably know it’s not as simple as chmod a+x.

    I also fully agree with you that curl+pipe+bash random stuff should be banned as awful practice and that is much worse than containers in general. But posting instructions on forums and websites is not per se dangerous or a bad practice. Following them blindly is, but there is still people not wearing seatbelts in cars or helmets on bikes, so…

    Exactly what I’m saying. People will do stupid stuff and containers have nothing to do with it.

    Chmod 777 should be banned in any case, but that steams from containers usage (due to wrongly built images) more than anything else, so I guess you are biting your own cookie here.

    Most of the time it’s not necessary at all. People just have “allow everything, because I have no idea where the problem could be”. Containers frequently run as root, so I’d say the chmod is not necessary.

    In a world where containers are the only proposed solution, I believe something will be taken from us all.

    I think you mean images not containers? I don’t think anything will be taken, image is just easy to provide, if there is no binary provided, there would likely be no binary even without docker.

    In fact IIRC this practice of providing binaries is relatively new trend. (Popularized by Go I think) Back in the days you got source code and perhaps Makefile. If you were lucky a debian/src directory with code to build your package. And there was no lack of freedom.

    On one hand you complain about docker images making people dumb on another you complain about absence of pre-compiled binary instead of learning how to build stuff you run. A bit of a double standard.


  • I don’t agree with the premise of your comment about containers. I think most of the downsides you listed are misplaced.

    First of all they make the user dumber. Instead of learning something new, you blindly “compose pull & up” your way. Easy, but it’s dumbifier and that’s not a good thing.

    I’d argue, that actually using containers properly requires very solid Linux skills. If someone indeed blindly “compose pull & up” their stuff, this is no different than blind curl | sudo bash which is still very common. People are going to muddle through the installation copy pasting stuff no matter what. I don’t see why containers and compose files would be any different than pipe to bash or random reddit comment with “step by step instructions”. Look at any forum where end users aren’t technically strong and you’ll see the same (emulation forums, raspberry pi based stuff, home automation,…) - random shell scripts, rm -rf this ; chmod 777 that

    Containers are just another piece of software that someone can and will run blindly. But I don’t see why you’d single them out here.

    Second, there is a dangerous trend where projects only release containers, and that’s bad for freedom of choice

    As a developer I can’t agree here. The docker images (not “containers” to be precise) are not there replacing deb packages. They are there because it’s easy to provide image. It’s much harder to release a set of debs, rpms and whatnot for distribution the developer isn’t even using. The other options wouldn’t even be there in the first place, because there’s only so many hours in a day and my open source work is not paying my bills most of the time. (patches and continued maintenance is of course welcome) So the alternative would be just the source code, which you still get. No one is limiting your options there. If anything the Dockerfile at least shows exactly how you can build the software yourself even without using docker. It’s just bash script with extra isolation.

    I am aware that you can download an image and extract the files inside, that’s more an hack than a solution.

    Yeah please don’t do that. It’s probably not a good idea. Just build the binary or whatever you’re trying to use yourself. The binaries in image often depend on libraries inside said image which can be different from your system.

    Third, with containers you are forced to use whatever deployment the devs have chosen for you. Maybe I don’t want 10 postgres instances one for each service, or maybe I already have my nginx reverse proxy or so.

    It might be easier (effort-wise) but you’re certainly not forced. At the very least you can clone the repo and just edit the Dockerfile to your liking. With compose file it’s the same story, just edit the thing. Or don’t use it at all. I frequently use compose file just for reference/documentation and run software as a set of systemd units in Nix. You do you. You don’t have to follow a path that someone paved if you don’t like the destination. Remember that it’s often someone’s free time that paid for this path, they are not obliged to provide perfect solution for you. They are not taking anything away from you by providing solution that someone else can use.




  • I have a bunch of these myself and that is my experience, but don’t have any screenshots now.

    However there’s great comparison of these thin clients if you don’t mind Polish: https://www.youtube.com/watch?v=DLRplLPdd3Q

    Just the relevant screens to save you some time:

    Power usage:

    Cinebench multi core:

    The power usage in idle is within 2W from Pi 4 and the performance is about double compared to overclocked Pi 4. It’s really quite viable alternative unless you need really small device. The only alternative size-wise is slightly bigger WYSE 3040, but that one has x5-z8350 CPU, which sits somewhere between Pi3B+ and Pi4 performance-wise. It is also very low power though and if you don’t need that much CPU it is also very viable replacement. (these can be easily bought for about €60 on eBay, or cheaper if you shop around)

    Also each W of extra idle power is about 9kWh extra consumed. Even if you paid 50c/kWh (which would be more than I’ve ever seen) that’s €5 per year extra. So I wouldn’t lose my sleep over 2W more or less. Prices here are high, 9kWh/y is rounding error.





  • In Tailscale you can set up an exit node which lets you access the entire internet via its internet connection.

    You could set up an exit node that would let you access the internet via some (anonymizing) VPN providers like Mullvad or any other.

    This sounds like Tailscale is simply setting up this exit node for Mullvad on their side and providing it as a service. So it’s not like using another VPN anonymizers is impossible, it’s just convenient to use Mullvad.


  • If it’s really early 2000s, you might want to put it on eBay. There are retro gamers out there that could use it as good Windows 9x era gaming PC. You could give that HW a new life in someone’s retro setup.

    It’s great HW for occasional gaming, but it’s very inefficient for 24/7 operation. You want to be somewhere after 2015-ish for something that is supposed to run constantly.





  • I’d say it’s more about elasticity. Scaling is just very narrow aspect of elasticity.

    To give you some specific example, there’s a company (that I won’t name) that by law has to have all data on premises. They have local cloud in their own datacentre. Part of that cloud is a set of powerful servers with ton of GPUs. Daytime they spin up VMs that employees can log into and have remote desktop for graphically intensive tasks.

    Now you might be thinking “wait a second, they can’t easily add GPUs in the morning as employees log in, there is no scaling and thus no cloud!” And by that definition you’d be right. But what they do with their cloud is that as the demand for VDI drops in the evening, they will start allocating the GPU and CPU resources to completely different kind of VMs that do overnight data crunching. (think geospatial data) It’s completely different OS, the servers are in server subnet, not VDI network, etc… So they are using the elasticity, but it’s not just scaling.

    Another counterexample is pretty frequent issue on AWS, where they momentarily run out of specific instance type in specific region. AWS support “will do their best” but you’re often looking at hours of wait time before you get your instance. Now depending where you live you could go buy a server and deploy it in your own DC faster than that. Has AWS stopped being cloud provider? No, you can use the elasticity and either spawn different instance type (if your workload allows that) or in different region/AZ. You might have been just trying to replace one instance with another, not even trying to scale up, it’s just the capacity for replacement wasn’t there.


  • For some definition of cloud. You also have on premises cloud. When Amazon runs their e-commerce site on AWS, are they running it on someone else’s computer or not in cloud? (putting aside some tax-wise separation of individual Amazon subsidiaries)

    On the other hand there are still providers that will rent you an server in their DC, but you don’t get any API or anything else. At best they’ll plug in HDDs that you sent them. This server hosting existed before “cloud” was a thing and it continues to exist.

    I’d say that more accurate definition of cloud would be “someone else’s computer with an API that customer can access”. And if I’m really strict about that definition I’d drop entire first part, because it’s the API that matters - computer might as well be yours.

    Source: I’ve been on both sides of cloud from the very beginning.