[HN Gopher] Show HN: Anatomy of My Kubernetes Cluster ___________________________________________________________________ Show HN: Anatomy of My Kubernetes Cluster Author : astefanutti Score : 72 points Date : 2020-03-18 15:29 UTC (7 hours ago) (HTM) web link (ttt.io) (TXT) w3m dump (ttt.io) | asdfman123 wrote: | More software engineers should build Kubernetes clusters like | this at home... | | So they don't have to do it at their work. | | (Unless they work at a large enough company to justify one.) | captn3m0 wrote: | If you'd like to do something similar, check out the Turing Pi, | which uses RPI compute modules and runs off a ATX power supply. | | https://turingpi.com/ | tyingq wrote: | _" 59 Watts, That's well above the power supplied by any AC mains | to 5V DC external power supply I could find"_ | | MeanWell has their RS-75-5, which is 60 Watts. Usually around | $20. | zulu-inuoe wrote: | Real question coming from a non-k8-user. What would you use | something like this for? Server hosting or? | bashinator wrote: | Ultimately the question is, "how much of the total cpu/memory | is used just running kubernetes?" I know prior to rpi4, | clusters like this were basically demo/education/bragging | rights projects. | m0zg wrote: | Why tho? Why not just launch N KVM virtual machines on your linux | box? This literally takes minutes, unlike this project which | probably took days. And it's much faster once you get it up and | running. | rubiquity wrote: | Because tinkering is fun and fun is good. | m0zg wrote: | It just seems like there are much more interesting projects | available for "tinkering" than building a slow, barely usable | Kubernetes cluster. | moondev wrote: | Like what? Interested to hear what you deem interesting | enough to tinker on. | tra3 wrote: | Nicely done. I've been meaning to dive into k8s clusters (with | either k3s or kind) -- what is the advantage of building a Pi | cluster over something like multiple vagrant nodes? Not | criticizing at all, just trying to understand. | rcarmo wrote: | Not the OP (see my other comment). For me it was the cheap | hardware and the fun aspects of the project. It's a tangible | thing. | | But I also like ARM chips and do occasional embedded | development, so I had other motives :) | ablekh wrote: | Nice write-up. | rcarmo wrote: | This is neat. I've been doing the same with Pi 1s and 2s for a | few years (http://github.com/rcarmo/raspi-cluster) but stopped | short of upgrading to 3s and 4s because of heat/power/cost. | | I've found that it is possible to run k3s on SD cards quite well | if you're patient, but that the Pi 2 master node spent a _lot_ of | time just doing internal stuff even on an otherwise idle cluster, | so I went back to Swarm. | | (I also had quite a bit of trouble with setting up a container | registry, which was hard and undocumented in the first few | releases of k3s. Ingress was also a bit of a pain, it's much | easier to get traefik working in Swarm...) ___________________________________________________________________ (page generated 2020-03-18 23:00 UTC)