Why not rasberry pi with kubernetes?
this post was submitted on 07 Feb 2025
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I think any mini-pc/old laptop is better, and probably cheaper than a raspberry pi nowadays
I would have disagreed with you when Pis were like $50 and chaining 3 Pis together with a hard drive was a fun project to do self hosting.
Now to get to the beefiest raspberry pi, it's $120. And in the range, yeah, for price and reliability, use a mini-pc/laptop.
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I need
It's just fun to play with, there is no "need".
Yeah, I enjoyed my time with k3s setup at home as well, but right now I don't really want nor need that π
I need a kubernetes cluster with high availability, load balancing and horizontal pod autoscaling, because that is something I want to learn. I don't care that it's just for wife's home-made dog collars webshop.
Yeah that's basically it for me. I have a collection of dev boards, old hardware and stuff other people were tossing out set up for a variety of purposes (Kubernetes clusters, two build farms, network boot, etc.). None of it is because I feel I "need" any of that for self hosting. In practice two old desktops with a bunch of drives would be perfectly capable of providing everything I need including redundancy. I have all that stuff because I'm learning and experimenting.
This is the way
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This struggle usually takes place over a weekend.
This guy selfhosts
Switched from a raspberry pi 3 to a second hand x86 thin client (lenovo thinkcentre m920q) because raspberry pi 4 were not available at the time. Made me learn proxmox and a bunch of other cool stuff my raspi couldn't handle.
I'm rooting for ARM / RISC-V to become more popular in desktop computing / servers though.
I've always liked riscv. Just the idea of literally everything on the device being open source is a fun idea. Manuals to everything.
Just because the ISA is open source doesn't mean that the end product or even the design will be open source.
RISC-V is licensed permissively, giving anyone the right to make a proprietary (or FOSS) RISC-V processor.
Often times, you'll see mostly open source cores, but then some extention is proprietary.
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I've found that a pi is good enough, computationally, but not reliability wise.
A lot of things like advanced light control goes through my host, so any lockups or crashes are bad. My pi held up for about 18 months before it began to play up. I've found a small NUC system has higher reliability for the same price and power usage.
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i think the best choice is a cheap used pc or laptop, or server. Reduces electric waste. I also host my own server on a 19 year old Dell Insprion 1300
Reduces electric waste
A lot of older equipment actually wastes more electricity.
But it will cut down on electronic waste.
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Think centre tiny here
Low consumption, two ddr4 slots, one 2.5" slot and one nvme slot! Lots of outside slots.
Costed less used than a new pi too. They have gotten too expensive IMO.
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A mini PC is a good middle ground. Mostly for the video transcode and machine learning power.
Yeah, a mini PC... or if you already have one, why not 5 mini PCs?
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I have been in for a couple months now, Proxmox cluster with two machines.
- Self built pc that was my daily driver for a while, rtx 3080ti 32gb ram, ryzen 7 3700x, runs the heavy stuff like a Mac VM, LLM stuff, game servers
- Rando open box mini pc I picked up on a whim from Bestbuy, Intel 300 (didn't even know these existed...) with igpu, 32gb of ram, hosts my dhcp/dns main traefik instance and all the light services like dozzle and such.
Works out nicely as I crash the first one too often and the DHCP going down was unacceptable, wish I got a slightly better cpu for the minipc but meh, maybe I can upgrade it later.
To be fair, also love the mini pc's and having a larger NAS. For me the PoE capabilities of the Pi's are definitely the reason I use them
The HAT-ability of RPi makes them enough for me. You can add sata ports, PCIe, and more with a simple HAT.
any recommendations on hats for sata?
Been running one from Radxa for a while. Just make sure to check the power requirements of your drives.
See, I don't pay for the electric bill to keep my collection of old enterprise equipment running because I need the performance. I keep them running because I have no resistance to the power of blinkenlights.
a pie is neat. thats it. does it have enough ram for hosting & running all your containers? no.
So close. Started on raspberry pi. Went for a cluster with dpckrt swarm. Finished with a nas and a 10years old game computer as a mediacenter. (That the electricity bill whoch made me stop the cluster)
The only problem I've had with Raspberry Pi is that some apps want to write a lot of stuff to "disk", and the default "disk" on a Pi is a MicroSD card which dies if you keep writing things to it. Sure, you can always plug something into a USB slot, but that adds a bit of friction to the whole process.
Oh, also, I wish it were easy to power a whole bunch of Pi units. Each one needing its own wall wart is a bit annoying, and I've had iffy results using weaker, less steady power supplies with multiple ports intended for things like phones.
I ended up just buying an industrial mSD card. Has yet to fail.
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I ran lots of containers on a Pi 4 but recently purchased two cheap Chinese mini PC's with 16GB RAM and an SSD. They're so much faster and only a bit dearer than a Pi. I run Proxmox on both.
Absolutely nothing wrong with the Pi though. The Pi 4 lives on with a USB drive attached. I have NFS configured on it to backup my Proxmox VMs to it. It also hosts all the media for Jellyfin.
If you think about it, the kubernetes nodes often are only raspberry pis specwise. 2-4 cores, 8-16gb of ram
I had to buy a lenovo thinkcentre mini because was cheaper than a brandnew raspberry pi.
I've discovered that there are a lot of medium-tier software engineers who immediately will go straight to horizontal scaling (i.e: just throw hardware at it), and I've seen instances where very highly skilled engineers just write their code better, set things up on a bare metal server, cache things, etc. and manage with just a single badass server
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