Programming knowledge is largely irrelevant, as in to gain sensible benefits from it you have to be generalist software engineer with decade+ of experience of seeing it all. Then yeah, you can read any code, any stack traces and figure out the intent of developers of the system and what is undocumented/incorrectly documented.

Focusing on one particular language is the right and wrong answer at the same time. Wrong in a sense that you’ll have to pick up other languages along your journey anyway and right because you need to achieve mastery in one of them to get to more advanced programming topics. Pick a language that you have fun using and don’t care about anything else.

As for what to learn for self-hosting… Linux (pick a distro, let’s say ubuntu LTS w/o gui, ssh there and get comfortable with it. It includes installation, filesystems, RAID setups), networking, HTTP/S (that’s the main thing you’ll be interacting with as self-hoster and knowing various nuances of reverse proxying is a must), firewalling, basics of security and hardening, docker, monitoring, backups.

Patience, most of all.

Also, backups and notes. The solution you use to host might take care of the backups. For example, I use Unraid, so if any drive fails the system can simulate the data on that drive until I can get it shut down to replace it, and then recreate the data on the new drive.

As for notes, those are important so that you can always know what you’ve done, and what you need to do. That way, if you ever have to do it again, say if you’re setting up another server or replacing one that failed, you know the steps you took to get it set up exactly how you like. It’s also handy because you’ll be doing things like assigning services to ports, and you’ll probably at some point want to know what services are on what ports without going through and checking each one. Things like that are handy things to stick in notes.

Other than that, you don’t need a lot of skills to set something like a home server up. You just need to read the documentation for each service you’re planning to use, and get familiar with how it works.

Docker really. If something goes bad, trash the container and start again without loosing your actual data.

You don’t need to be a programmer to selfhost.

The most important “skills” to have if you want to selfhost imo are:

• Basic Networking knowledge

• Basic Linux knowledge

• Basic docker/docker compose knowledge

But I’d say to not get lost in the papers and just jump right in. Imo, the best way to learn how to selfhost is to just… Do it. Most everything is free and fairly well documented

Learn how to properly backup your data in case you nuke something you shouldn’t

the patience to read lots of documentation.

If you want to program something, the closest you’re gonna get to programming is Ansible and Bash scripts.

You might want to get self hosting hardware like Synology or the like if you’re not ready to dig.

Otherwise here’s some things you need to know:

• Docker
  • Easy, consistent deployment of services in their own environments. Think a VM but with almost no overhead.
• Docker Compose
  • Run docker containers with consistent configuration in files.
  • Connect various containers to each other on the same or different networks.
  • Get multiple containers to start together and talk to each other.
• Systemd
  • Manage any service on Linux. If anything needs to start on boot, restart when crashed, start on timer, you want Systemd.
  • You can manage your docker compose containers lifecycle via Systemd.
• NGINX/Apache/Caddy
  • A web server for reverse proxy. You’d probably need one at some point, especially if you want HTTPS. Your services get hidden behind it.
• ZFS
  • Reliable redundant storage. You’ll need storage. Use ZFS with 2-disk redundancy.
  • Supports automatic snapshots for recovering from oopsies. E.g. deleted something or some software shat on your data.
  • Can use recertified disks from serverpartsdeals.
  • Can use USB disks or USB box with multiple disks. If you end up going the USB route, ask me for tested hardware.
• Backup system
  • Something to do backup. There are many options.
• Ansible
  • If you want to write code that describes your services and make them happen, you want Ansible. You write code (well YAML) and Ansible installs things, writes config files, sets up Systemd services, restarts things. It can be convenient especially if you have a lot of stuff and you want to be able to see all of your infrastructure in code in one place and be able to version it.
• Prometheus
  • Monitoring your stuff. Is my backup service running? If not send me an email.

Oh and use Debian or Ubuntu LTS.

Persistence and reading comprehension.

There’s no need to learn Python or any programming language to self host stuff, you just need to be able to follow blog posts and run some Docker commands.

I’m a software dev and haven’t touched a single line of code on my NAS. Everything is docker compose and other config files.

You don’t really need to know a specific language to self-host anything. But things like YAML, JSON, Docker, and some networking basic will go a long way.

If I could do anything different though, it would definitely be to write more documentation. Document the steps taking setting things up, log notes on when you have to fix something, archive webpages and videos that you used along the way. Currently doing that myself now after some time self-hosting.

Learning Linux is a great start.

Learning any coding language will help you understand a bit more about the programs will work, however there isn’t much need to actually learn a specific language unless you plan to add custom programs or scripts.

The general advice for email is don’t. It’s very risky to host and it’s a big target for spam. Plus there’s challenges getting the big companies to trust your domain.

However hosting things behind a VPN (or locally on your home network) can let you learn a lot about networking and firewalls without exposing yourself to much risk.

I have no direct experience with next cloud but I understand it can be hosted on Linux, you can buy a Synology NAS and run it in that, or use something like TrueNAS.

Personally my setup is on one physical server so I use Proxmox which lets me run 2 different Linux servers and trueNAS on one single computer through virtual machines. I like it because it lets me tinker with different stuff like home assistant and it won’t affect say my adblocker/VPN/reverse proxy. I also use Docker to run multiple services on one virtual machine without compatibility issues. If I started again, I’d probably have gotten bigger drives or invested in SSDs. My NAS is hard drives because of cost but it’s definitely hitting a limit when I need to pull a bunch of files. Super happy with wireguard-easy for VPN. I started with a proprietary version of openVPN on Oracle Linux and that was a mistake.

Lots of people have been talking about products and tools. It’s docker, tailscale, cloudflare proxmox etc. These are important, but will likely come and go on a long enough timescale.

In terms of actual skills, there’s two that will dramatically decrease your headaches. Documention and backup planning. The problem with developing those skills is, to my knowledge, they’ve only ever been obtained through suffering. Trying to remember how to rebuild something when you built it 6 months ago is futile. Trying to recover borked data is brutal. There’s no fail-safe that you haven’t created, and there’s no history that you haven’t written. Fortunately, these are also the most transferable skills.

My advice is, jump in. Don’t hesitate. The chops in docker/linux/networking will come with use and familiarity. If it looks cool, do it. Make mistakes. You will rapidly realise what the problems with your set up are. You will gain knowledge in leaps and bounds from breaking a thing vs learning by rote or lesson. Reframe the headaches as a feature, not a bug - they’re highlighting holes in your understanding. They signpost the way to being a better tech, and a more stable production environment.

The greatest bit about self hosting for me is planning the next great leap forward, making it better, cleaner, more robust. Growing the confidence in your abilities to create a system you can trust. Honing your skills and toolset is the entirety of the excercise, so jump in, and don’t focus on any one thing to master or practice before hand!

if you could start again in your self hosting journey, what would you do differently? :)

That’s an excellent question.

If I were to start over, the first thing that I would do is start by learning the basics of networking and set up a VPN! IMO exposing services to the public internet should be considered more of an advanced level task. When you don’t know what you don’t know, it’s risky and frankly unnecessary.

The lowest barrier to entry for a personal VPN, by far, is Tailscale. Automatic internal DNS and clients for nearly any device makes finding services on a dedicated machine really, really, easy. Look into putting a tailscale client right into the compose file so you automatically get an internal DNS records for a service rather than a whole machine.

From there, play around with more ownership (work) with regard to what can touch your network. Switch from Tailscale’s “trusted” login to hosting your own Headscale instance. Add a PiHole or AdGuard exit node and set up your own internal DNS records.

Maybe even scrap the magic (someone else’s logic that may or may not be doing things you need) and go for a plain-Jane Wireguard setup.

• Docker: You can practice on your main computer before complicating things with networking.
• How to set up a reverse proxy: DNS, certificates, etc. I recommend Caddy.
• Backups: If you use Docker Volumes, make sure you back those up too and test the backups.

To self-host, you do not need to know how to code.

Take the time to properly understand Linux file ownership and permission. Permission will be the cause of many issues you will encounter in you self-hosting journey on Linux. Make sure you know the basics of chmod (change permission) and chown (change ownership), Linux users and groups. This will save you some head-scratching, but don’t worry, you will learn by doing !

Remember that, if you setup everything right, especially with docker, running as root / with sudo is not required for any of the services you may want to run.

Determination, patience, a willingness to learn anything you need to.

If you have those, in time, you will be able to get your lab up and running. I started mine with a minimal knowledge of Linux (I could install it from a USB and poke around). Now it’s the center of my families digital life.

You’ll get there in time.