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moonpiedumplings

@ moonpiedumplings @programming.dev

Posts
25
Comments
514
Joined
3 yr. ago

  • A sneaky demonstration of the dangers of curl bash

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  • I won't lie, I use curl | bash as well, but I do dislike it for two reasons:

    Firstly, it is much, much easier to compromise the website hosting than the binary itself, usually. Distributed binaries are usually signed by multiple keys from multiple servers, resulting in them being highly resistant to tampering. Reproducible builds (two users compiling a program get the same output) make it trivial to detect tampering as well.

    On the other hand, websites hosting infrastructure is generally nowhere near as secure. It's typically one or two VPS's, and there is no signature or verification that the content is "official". So even if I'm not tampering with the binary, I can still tamper with the bash script to add extra goodies to it.

    On the other hand (but not really relevant to what OP is talking about), just because I trust someone to give me a binary in a mature programming language they have experience writing in, doesn't mean I trust them to give me a script in a language known for footguns. A steam bug in their bash script once deleted a user's home directory. There have also been issues with AUR packages, which are basically bash scripts, breaking people's systems as well. When it comes to user/community created scripts, I mostly trust them to not be malicious, and I am more fearful of a bug or mistake screwing things up. But at the same time, I have little confidence in my ability to spot these bugs.

    Generally, I only make an exception for running bash installers if the program being installed is a "platform" that I can use to install more software. K3s (Kubernetes distro), or the Nix package manager are examples. If I can install something via Nix or Docker then it's going to be installed via there and not installed via curl | bash. Not every developer under the sun should be given the privilege of running a bash script on my system.

    As a sidenote, docker doesn't recommend their install script anymore. All the instructions have been removed from the website, and they recommend adding their own repo's instead. Personally, I prefer to get it from the distro's repositories, as usually that's the simplest and fastest way to install docker nowadays.

  • Yet another reason to hate on the worse DB in existence

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  • Unfortunately deleted means deleted. Data gone.

    My recommendation is to use it as a reverse proxy to expose services but ultimately host from another device.

    It's 1 gb of ram anyway (the free 24 gb of ram arm vps' are scarce and hard to get).

    Another tip is that they monitor cpu and ram and are more likely to delete it if is idling. There exist programs on github that do nothing but waste cpu in order to try to keep the oracle vps up.

  • k8s storage (CSI)

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  • Openebs mayastor

    But you could fit ceph on that I think. As long as your network between nodes is fast enough.

  • Yet another reason to hate on the worse DB in existence

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  • They like to randomly delete them. It happened to me and a friend.

  • Quick guide on using the Eduroam university internet on Linux

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    1. Use networkmanager. Other alternatives technically work but I have has seen many people struggle with alternatives, they are not as smooth.
    2. Follow the instructions for connecting on android devices. The options will be named the same.
  • Linux @programming.dev
    moonpiedumplings @programming.dev

    Bluetooth streaming from phone randomly stops

  • KDE @lemmy.kde.social
    moonpiedumplings @programming.dev

    Bluetooth streaming from phone randomly stops

  • Best remote control option to support non-techies

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  • Did you try meshcentral? It's a selfhosted MDM.

  • Why is self-hosted voice chat so hard?

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  • It's easy. Mumble. Or the thing you used probably still works.

    But you see, people never actually seek a discord alternative. They want a discord alternative that includes all the features in one app that is also federated, AND end to end encrypted, and each one makes things vastly more technically challenging and resource intensive and then you want them together.

    A little secret: Matrix is much, much easier to host if you disable encryption and federation. Federation to many servers is the main performance killer, and "failed to decrypt message" will all disappear if you disable encryption.

  • Cheap or free periodical externals scans

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  • If your software updates between stable releases break, the root cause is the vendor, rather than auto updating. There exist many projects that manage to auto update without causing problems. For example, Debian doesn't even do features or bugfixes, but only updates apps with security patches for maximum compatibility.

    Crowdstrike auto updating also had issues on Linux, even before the big windows bsod incident.

    https://www.neowin.net/news/crowdstrike-broke-debian-and-rocky-linux-months-ago-but-no-one-noticed/

    It's not the fault of the auto update process, but instead the lack of QA at crowdstrike. And it's the responsibility of the system administrators to vet their software vendors and ensure the models in use don't cause issues like this. Thousands of orgs were happily using Debian/Rocky/RHEL with autoupdates, because those distros have a model of minimal feature/bugfixes and only security patches, ensuring no fuss security auto updates for around a decade for each stable release that had already had it's software extensively tested. Stories of those breaking are few and far between.

    I would rather pay attention to the success stories, than the failures. Because in a world without automatic security updates, millions of lazy organizations would be running vulnerable software unknowingly. This already happens, because not all software auto updates. But some is better than none and for all software to be vulnerable by default until a human manually touches it to update it is simply a nightmare to me.

  • Cheap or free periodical externals scans

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  • Second comment, but also investigate Wazuh. It can audit systems and report vulnerabilities. It's not an external scanner, but I have found it to be more effective and less annoying than greenbone/openvas.

  • Cheap or free periodical externals scans

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  • Instead of trying to automatically scan your environment, it's probably better to figure out how to automatically update applications first. CVE's eventually get patched.

  • I’m done with RAID5

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  • No, isn't it only software raid5 done via btrfs?

    Btrfs + hardware raid should work fine. The OS can't tell the difference anyways.

  • GitHub - spacebarchat/spacebarchat: 📬 Spacebar is a free open source selfhostable discord compatible communication platform

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  • Fermi is just a custom client for discord/spacebar. It's not federated.

  • GitHub - spacebarchat/spacebarchat: 📬 Spacebar is a free open source selfhostable discord compatible communication platform

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  • It's not federated, just easy to self host and point custom clients at.

  • GitHub - spacebarchat/spacebarchat: 📬 Spacebar is a free open source selfhostable discord compatible communication platform

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  • Faster than my edits, I see.

  • GitHub - spacebarchat/spacebarchat: 📬 Spacebar is a free open source selfhostable discord compatible communication platform

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  • Docker compose's don't really need to be maintained though. As long as the app doesn't need new components old docker composes should work.

    EDIT: Oops, it does look like spacebarchat's docker images have last been updated over 2 years ago:

    https://hub.docker.com/r/spacebarchat/server

    EDIT2: Although this is outdated, I think their github repo has an action to autobuild docker images on pushes. Still investigating.

    EDIT3: Okay, they don't seem to be actually ran.

    But using nix to build a docker image is pretty cool.

    EDIT4: Oh shit, the docker image build workflows were added just 2 hours ago. Of course they haven't been ran!

    Docker support soon, probably.

    EDIT5: the workflow ran, but it looks like it's private for now.

  • Selfhosted @lemmy.world
    moonpiedumplings @programming.dev

    GitHub - spacebarchat/spacebarchat: 📬 Spacebar is a free open source selfhostable discord compatible communication platform

    github.com /spacebarchat/spacebarchat

  • Question: Is there a Self Hosted Discord like app?

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  • Discord will restrict your account next month unless you scan ID or face

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  • It's not that hard though. There are companies that offer data recovery as a service. If the value of the data on those drives exceeds the cost of those services then it becomes worth it to fish one of the drives out of the dumpster and take it there.

  • Discord will require a face scan or ID for full access next month

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  • Honestly, the best solution to 1 may be to simply deploy mumble in addition to matrix (or other chat apps).

  • Discord will restrict your account next month unless you scan ID or face

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  • This is not truly foolproof. Data can still be recovered from the spinning metal platter since it can theoretically be removed and put into a recovery device, even in a broken state.

    Im addition to that, hard drives/ssd's sometimes have small flash memory chips, from which data can sometimes be recovered.

    If you want it to actually be unrecoverable then you have to actually ensure all parts thay store data are truly deleted/wiped, which is more than just the core platter. Or just use encryption and throw away the key, since all data going through the tiny OS on these devices will be encrypted. Or just store them forever in a vault.

  • Ask Lemmy @lemmy.world
    moonpiedumplings @programming.dev

    What's the minimum number of food items you can survive on exclusively and what are they?

  • Memory compression on hypervisor vs host

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  • Unless you are running at really large scales, or really small scales and trying to fit stuff that quite fit, memory compression may not be significant enough of an optimization to spend a lot of time experimenting a lot. But I'm bored and currently on an 8 GB device so here are my thoughts dumped out from my recent testing:

    Zram vs Zswap (can be done at hypervisor or at host):

    • One or the other is commonly enabled on many modern distros. It is a perfectly reasonable position to simply use the distro's defaults and not push it any further
    • Zram has much, much better compression, but suffers from LRU inversion. Essentially after zswap is full, fresh pages (memory) goes to the swap instead. Since these pages will probably be needed, it will be slower to get them from the disk then to get them from zram.
    • Zswap has much, much worse compression but cold, unused pages are moved to swap automatically, freeing up space
    • I am investigating ways to get around the above. See my thoughts on this and other differences here: https://github.com/moonpiedumplings/moonpiedumplings.github.io/blob/main/playground/asahi-setup/index.md#memory-optimization

    Kernel same page merging (KSM) (would be done at hypervisor level) (esxi also has an equivalent feature called something different):

    • Only really efficient if you have lots of the same virtual machines
    • Used to overcommit (promise more ram than you physically have)
      • Dangerous, but highly cost saving. Many cheap VPS providers do this in order to save money. You can run four 8 GB vps on 24 GB of ram and take a semi-safe bet that not all of the memory will be used.

    In my opinion, the best thing is to enable zram or zswap at the virtual machine level and kernel same page merging at the hypervisor level, assuming you take into account and accept the marginal security risk and slightly weaker isolation that comes with KSM. There isn't any point running zswap at two layers, because the hypervisor is just gonna spend a lot of time trying to see if it can compress stuff that's already been compressed. Than KSM deduplicates memory across hosts. Although you may actually see worse savings overall if zram/zswap compression is only semi-deterministic and makes deduplication ahrder.

    I agree with the other commenter as well about zram being weird with some workloads. Like I've heard of I think it was blender interacting weirdly with zram since zram is swap, making less total memory available in ram, whereas zswap compresses memory. If you really need to know you gotta test.

  • Selfhosted @lemmy.world
    moonpiedumplings @programming.dev

    What's the laziest way to create a website that looks really nice and is maintainable?

  • Firefox @lemmy.world
    moonpiedumplings @programming.dev

    Profiles (old) vs Profiles (new) vs Containers

  • Programmer Humor @programming.dev
    moonpiedumplings @programming.dev

    Terraform plugin for the Dominos Pizza provider

    github.com /MNThomson/terraform-provider-dominos/
  • Wikipedia @lemmy.world
    moonpiedumplings @programming.dev

    Core War - Wikipedia

    en.wikipedia.org /wiki/Core_War
  • Nix / NixOS @programming.dev
    moonpiedumplings @programming.dev

    home-manager now has a built in option to wrap packages with NixGL, for non-nixos systems

    home-manager.dev /manual/unstable/index.xhtml
  • Linux @lemmy.world
    moonpiedumplings @programming.dev
    Solved but only for mpv

    Is there any way on KDE, I can "click through" a partially transparent window to interact with the window behind it instead?

  • Linux @lemmy.ml
    moonpiedumplings @programming.dev
    Solved but only for mpv

    Is there any way on KDE, I can "click through" a partially transparent window to interact with the window behind it instead?

  • Linux @programming.dev
    moonpiedumplings @programming.dev
    Solved but only for mpv

    Is there any way on KDE, I can "click through" a partially transparent window to interact with the window behind it instead?

  • Open Source @lemmy.ml
    moonpiedumplings @programming.dev

    GitHub - element-hq/ess-helm: Element Server Suite Community Edition

    github.com /element-hq/ess-helm/
  • Opensource @programming.dev
    moonpiedumplings @programming.dev

    GitHub - element-hq/ess-helm: Element Server Suite Community Edition

    github.com /element-hq/ess-helm/
  • Asklemmy @lemmy.ml
    moonpiedumplings @programming.dev

    Give me some of your hardest riddles? (with solutions in spoilers)

  • Linux @lemmy.ml
    moonpiedumplings @programming.dev

    There doesn't appear to be a limit to the maximum size the KDE cursor can get when you shake it.

  • Linux @programming.dev
    moonpiedumplings @programming.dev

    There doesn't appear to be a limit to the maximum size the KDE cursor can get when you shake it.

  • Programmer Humor @lemmy.ml
    moonpiedumplings @programming.dev

    shell-mommy is a program that encourages users while using command line applications.

    github.com /sudofox/shell-mommy
  • Programmer Humor @programming.dev
    moonpiedumplings @programming.dev

    shell-mommy is a program that encourages users while using command line applications.

    github.com /sudofox/shell-mommy
  • Linux @programming.dev
    moonpiedumplings @programming.dev

    Introducing Incus 6.7