Of the many useful things I could do with my spare time instead I’m setting up a Lemmy instance because why not. The scope of this is definitely greater than any self-hosting I’ve ever attempted, so please feel free to tell me just how much trouble I’m in. I’m just giving the broad strokes to see if I’ve made any crucial errors (other than deciding to do this at all).

And if this is a completely wrong place for a post like this or I’m missing data I’m supposed to include I apologize, I probably need a sanity check, in more ways than one.

First limitation, I’ll be hosting it on an existing Linux Mint box acting as a file share mostly and occasional gaming PC/movie streaming box. Its hardware is overkill for this, I do not anticipate issues when it is in use. It receives regular updates and weekly reboots, instance will be set to automatically restart. NVMe with loads of space for local storage, RAID SSDs for data offload/backup.

Second limitation, I hate Cloudfare and Oracle. I do not want to use either of them.

Third limitation, money. Cheaper is better. I have a URL picked out and a registrar which will give me the cheapest long term option, in case I actually keep this thing going.

Last limitation, I’m already in over my head so I’ll be relying on a lot of googling and probably some chat bots to figure things out as I go through the actual deployment process. What could go wrong?

So, Lemmy hosted on Linux Mint box using Docker containers. ISP is a good one for this I’m told, no CGNAT, largely stable public IP but I’ll have a script running in case it does change. Confirmed ports 80/443 are open. Using Caddy for the HTTPS. Closed registration to start, if by some miracle I make it to actually wanting to allow additional users it will not be fully open, and I’ll use Brevo for the email SMTP. Security wise I know I’m making it harder for myself by exposing my IP, I’m going to have UFW running and Crowdsec to help keep incoming bad traffic out.

Down the line I’ll get Lemmy updates, backups, retention rules in place/automated, and make decisions on federation, etc. Thoughts?

    • AngryishHumanoid@lemmy.worldOPEnglish
      2·
      1 day ago

      So I’m discovering, heh. I got the instance up in a relatively short period of time, I’m spending far more time on email, domain, logging, backups, decisions, etc. I know I could just be a barebones “who cares about any of that” instance since it’s largely gonna be my own personal playground, but where’s the fun of that?

  • PabloSexcrowbar@piefed.socialEnglish
    81·
    3 days ago

    I would NOT host a Lemmy instance at home unless you’re going to obfuscate your IP address. If you make it public, you’re inviting any whackjob that sees your username to find your physical location. Additionally, I wouldn’t host it on a PC that you actually intend to use for day to day stuff, just in case the instance gets hacked and someone manages to escape the container it’s in. If you wanted to do this, I would put it on its own box with Cloudflare in front of it, otherwise you’re inviting trouble where there doesn’t need to be any.

    • lemmyvore@feddit.nlEnglish
      1·
      2 days ago

      I keep seeing “escape the container” mentioned like it’s a very common occurance. Is it really? I’ve looked up escape CVE’s and they seem to be few and far apart, they’re usually tricky to pull off, and when one comes out it’s a big deal and they get fixed right away (obv).

      Actually my issue isn’t “do escape CVE’s exist”, it’s more like, should I really waste my time planning for it? It’s like planning for file permissions not to work, or logins to be bypassed.

      I get that shit happens and why defense in depth is a thing but how do you defend from something so fundamental? If you operate under the assumption that containerization can be by bypassed, and virtualization can be bypassed, where do you draw the line and what do you do, run each app on a standalone physical box?

      • PabloSexcrowbar@piefed.socialEnglish
        1·
        2 days ago

        I would say that finding that balance is up to the individual admin and application, really, which is where the defense in depth comes in. Yeah, it’s rare, and if those exploits are being used it means you’ve got the attention of someone you probably can’t really stop, but it’s something to take into consideration. Bad configs can cause data leakage across container boundaries, too, so without knowing the admin’s skill level, I tend to recommend against sharing that hardware with something that might have something valuable on it. AI has made it easier for script kiddies to find zero-days and exploit APT-level vulnerabilities, too.

  • shadshack@feddit.onlineEnglish
    4·
    3 days ago

    The only thing I’d say is look into whatever tooling and scripts people have made for removing CSAM from your instance. I messed around with a Lemmy instance for a bit, but when I heard about how hard it was to deal with the pedos, I got a little scared about inadvertently hosting CSAM and decided to shut it down. Since then I think I remember hearing about some better automated tooling for that kind of thing though so hopefully you can set that up.

    • Uncut_Lemon@lemmy.worldEnglish
      0·
      2 days ago

      If it’s your own instance, with closed sign ups, shouldnt it only sync the content you subscribe too?

      • lemmyvore@feddit.nlEnglish
        1·
        2 days ago

        I mean, anybody can post anything anywhere, and it will get synced. Many communities aren’t even modded. But removing vile stuff is a burden to put on people to begin with, and I think most Lemmy instances are poorly equipped to deal with this automatically.

  • fartographer@lemmy.worldEnglish
    1·
    3 days ago

    I keep considering the same thing, except only letting myself register so that I can have my own stupid instance name.

  • Decronym@lemmy.decronym.xyzBEnglish
    2·
    3 hours ago

    Acronyms, initialisms, abbreviations, contractions, and other phrases which expand to something larger, that I’ve seen in this thread:

    Fewer Letters More Letters
    CGNAT Carrier-Grade NAT
    CSAM Child Sexual Abuse Material
    DNS Domain Name Service/System
    ISP Internet Service Provider
    NAT Network Address Translation
    TLS Transport Layer Security, supersedes SSL
    VPS Virtual Private Server (opposed to shared hosting)
    nginx Popular HTTP server

    [Thread #76 for this comm, first seen 11th Aug 2026, 19:20] [FAQ] [Full list] [Contact] [Source code]

  • girlpower@piefed.worldEnglish
    11·
    2 days ago

    I probably wouldn’t host it at home, there are so many personal devices containing personal information on the network that I don’t consider the risks involved worth it. I would get a VPS, even if they’ve increased in price lately. If you do set it up at home, you will have to harden the server and the network, and that requires a lot of time, knowledge and effort. Just keep this in mind!

    • motruck@lemmy.zipEnglish
      1·
      2 days ago

      You can easily sequester your personal stuff from your self hosted stuff. Most traffic going anywhere is encrypted as it should be. The main concern is lateral movement hence the network isolation.

    • AngryishHumanoid@lemmy.worldOPEnglish
      0·
      3 days ago

      Well in general I know I’m an idiot, so for the moment I’ll just stick with Lemmy instance feedback cause that’s at least easier for me to address without expensive therapy.

      • irmadlad@lemmy.worldEnglish
        0·
        3 days ago

        allow additional users it will not be fully open

        Just for trusted friends or randos? If randos, have you ever been a mod? Never set up a Lemmy instance, but I have been a mod of quite a few Reddit subs. It’s a headache I will never engage in again.

        • AngryishHumanoid@lemmy.worldOPEnglish
          1·
          3 days ago

          Not complete randos, but yeah it’ll likely be a very minimal group of people if at all. And I’m not looking forward to modding so I doubt I’ll go the route if having a lot of comms in my instance, but we’ll see what happens.

          • irmadlad@lemmy.worldEnglish
            2·
            3 days ago

            Alright man. Best of luck. Give it a go. You’ll never know how it will turn out unless you try.

  • hendrik@palaver.p3x.deEnglish
    1·
    4 days ago

    Why not host a PieFed instance instead? Similar but more features and easier to maintain. Does have some scraper countermeasures built in, so maybe you don’t even need Cloudflare. Also as a next project after that, you could learn Python and contribute to the project.