Why not rasberry pi with kubernetes?
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.
Kubernetes is designed to improve reliability
That doesn’t help against hardware thermal runaway. The pi would overheat its own ram chips and hard lock up. A simple power cycle fixed it.
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)
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.
a pie is neat. thats it. does it have enough ram for hosting & running all your containers? no.
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
An n100 PC is much better than that crapberry pi
jesus christ what a nice burn
Certainly tempted by one, any particular ones to look for? UK here, currys out of stock on an MSI one and Amazon is full of names I have never heard of and half the time it comes with Windows pro which is just a waste of money buying with the hardware.
I got the ASRock motherboard with the n100 cpu and built a PC with it. Right now, I just have it running two 3 TB hhds in a zfs mirror and it’s working nicely.
I wanted to get a raspberry pi at first but it was stupidly expensive in my country and, for what it offered compared to a normal x86 system, it was not worth it.
N100 is two years old now. If you’re going to suggest a mini PC, at least suggest one with a current gen CPU.
I was thinking more about a motherboard with that cpu, but we can go with the n150 then
I am seeing N100 mini PCs for a lot less than N150s though
Yes, you can optimize a lot. Especially with Linux. I did the same and even started to replace program that did too much, bloated, with my own programs. To speed up the development I did it with AI and Cursor.
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 😄
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
You can do it on a handful of Raspberry Pis rather than one, then.
Imagine, if you will, a Beowulf cluster of Raspberry Pis!
A man of culture, I see!
I don’t get this; a Pi isn’t even in the same conversation as an old rackmount server you can get for free. You couldn’t stuff half the compute, ram and storage into a Pi or a dozen Pis for 10X the cost of grabbing something off eBay for a hundred bucks.
That’s if the Rpi Foundation is deigning to let us peasants even buy them these days.
I have an old rackmount server I got for free. Dual Xeon X5650s, 192GB of RAM, four 8TB HDDs, and a pair of 250GB SSDs. I can only use it in the basement because it’s too loud to run anywhere else, but even then, it’s currently off because it trips its circuit breaker under heavy load.
A power strip full of Pis in a k3s cluster doesn’t do that. I used a 2GB model 4 for the control plane and 3Bs as the workers.
Why do you think you got it for free ;)
Eh, it was good when I got it. Who am I to turn down a free dual socket server though? :)
Useful in winter I suppose!
But I have a heat pump that is more efficient
If it trips circuit breakers it’s using a terrifying amount of power. Honestly with energy prices I am starting to think old stuff is actually becoming a bad value in some cases.
The problem is that server will probably use more electricity, it’ll be clunky to store, and it’s going to be loud as fuck.
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 did similar once the pi4s were hard to get and expensive. A used x86 mini pc was cheaper and magnitudes more powerful. It runs all my server needs. I’m a simple person: homebridge, plex server, retro game library.
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.
Waiting for proxmox-arm becoming a thing (I know there’s some community versions trying it but I’m not sure how reliable they are)
The hardware virtualisation available for arm just isn’t there yet
Apple Silicon Macs do a great job with virtualization. Outside of them there’s just no nice high end hardware that’s well suited for something like proxmox. It’s either low end SBC, or the hyper proprietary ARM servers that I don’t think we can even buy.
Those are heavily customised, we’re talking raspberry pi’s here
Modern Android phones include a hw-accelerated hypervisor. In Android 16, there will be a feature to run a full Linux VM through what Google calls protected Kernel VM (pKVM).
Qualcomm has their own implementation called Gunyah
Is there RISC-V hardware already? I thought the specification was still under development.
Very much so, not quite ready for prime time maybe, but you can play with it, StarFive is quite well-known for their chips in this space for example
Ok great! Time to get me some presents.
There are some Raspi competitors offering SBCs with RISC-V chips, there is even a RISC-V Mainboard for the framework laptops, but the last time I checked they sadly didn’t reach the performance levels of comparable ARM chips.
Psh if I’m writing at that level I don’t need the performance yet. Thanks!
This struggle usually takes place over a weekend.
This guy selfhosts
