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K3s – Lightweight Kubernetes

k3s.io

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Re: K3s – Lightweight Kubernetes

#71

Post by nunez »

There are lighter Kubernetes "distributions" (kind, minikube), but what makes k3s special is that it's (a) packaged as two binaries that provide all of the Kubernetes components in one, and (b) it's 100% suitable for production use.

Lots of teams are using K3s to run Kubernetes at the edge and in IoT applications, and with good reason. It's a fantastic Kubernetes distribution that's well-maintained, easy to get going with and well-documented.

(Ironically, if you look at the first commits to kubernetes/kubernetes, the Kubernetes components were originally shipped as a single binary. They decided to break them up later to simplify releasing, but the k3s monolith lives on.)

Re: K3s – Lightweight Kubernetes

#72

Post by FourSigma »

r-bar wrote: post #45
FourSigma wrote: post #21

Could someone please explain the difference between K0s[1] and K3s? They seem to both target the same minimalist K8s segment. [1] https://k0sproject.io/

K3S includes some extras that make it nice for working in small local clusters, but are not part of the standard k8s codebase. * Traefik daemonset as a load balancer * Helm controller that lets you apply helm manifests without the helm command line * Upgrade controller * Sqlite as the default backing store for the k8s API * Their own local storage provisioner K0S has a lot of the same goals: be light weight and self…

Thank you! Great details. Definitely want convenient.

Re: K3s – Lightweight Kubernetes

#73

Post by [deleted] »

praveenhm wrote: post #66

I've been closely following the discussion on k3s and Kubernetes in general. I recently acquired an M1 Mac Ultra, and I'm curious about the best options available for running Kubernetes locally on it. Does anyone have experience or recommendations in this area? I've heard about a few tools but wanted to gather insights from this knowledgeable community.

[deleted]

Re: K3s – Lightweight Kubernetes

#74

Post by Xiol32 »

efrecon wrote: post #47
j_m_b wrote: post #42

Is the overhead of Kubernetes worth it enough to make it smaller, presumably to run in less resource intensive environments? Docker compose fits this bill nicely and is much more simple.

Compose is for single node setups. K3s runs in multi-nodes clusters.

Also easier to scale out from your single starter k3s node as you grow.

Re: K3s – Lightweight Kubernetes

#75

Post by speedgoose »

j_m_b wrote: post #42

Is the overhead of Kubernetes worth it enough to make it smaller, presumably to run in less resource intensive environments? Docker compose fits this bill nicely and is much more simple.

Kubernetes is offering much more features than Docker compose. And then you have all the kubernetes operators and other extensions that makes it very complex and powerful.

It’s fine to use docker compose if it does what you need. If you start hacking weird things using Docker compose, it’s perhaps time to suffer and learn kubernetes.

Re: K3s – Lightweight Kubernetes

#76

Post by nunez »

praveenhm wrote: post #66

I've been closely following the discussion on k3s and Kubernetes in general. I recently acquired an M1 Mac Ultra, and I'm curious about the best options available for running Kubernetes locally on it. Does anyone have experience or recommendations in this area? I've heard about a few tools but wanted to gather insights from this knowledgeable community.

If you're just messing around, just use kind (https://kind.sigs.k8s.io) or minikube if you want VMs (https://minikube.sigs.k8s.io). Both work on ARM-based platforms.

You can also use k3s; it's hella easy to get started with and it works great.

Re: K3s – Lightweight Kubernetes

#77

Post by OhSoHumble »

diggan wrote: post #17

"Lightweight Kubernetes" and then a graph involving 2 different nodes with 10+ services running on them. Nomad seems to be a truly "lightweight Kubernetes" and for the small amount of time I've been using it, it seems to do it's job really well and it's easy to understand all the moving pieces without spending countless of hours reading docs and source code. Although, it's hard to recommend Nomad for future uses as i…

I've commented on this before in a different k8s thread (one about a k8s outage) but something that bears repeating is that the entire job market is Kubernetes.

My personal experience is that it is very, very hard to find a job right now if your professional experience is primarily non-k8s orchestration systems. Most job positions out there require deep Kubernetes knowledge as well as hands-on experience with different supporting products like ArgoCD and Flux.

I chose Nomad for a large initiative at my current employer and it is honestly pretty amazing given the use case but I regret choosing it because I feel like I'm unhirable now given that every devops/SRE/platform engineering position open on the market (each one with hundreds of applicants) is heavily Kubernetes focused.

Re: K3s – Lightweight Kubernetes

#78

Post by intangible »

I've been using a 3 nuc (actually Ryzen devices) k3s on SuSE MicroOS https://microos.opensuse.org/ for my homelab for a while, and I really like it. They made some really nice decisions on which parts of k8s to trim down and which Networking / LB / Ingress to use.

The option to use sqlite in place of etcd on an even lighter single node setup makes it super interesting for even lighter weight homelab container environment setups.

I even use it with Longhorn https://longhorn.io/ for shared block storage on the mini cluster.

If anyone uses it with MicroOS, just make sure you switch to kured https://kured.dev/ for the transactional-updates reboot method.

I'd love to compare it against Talos https://www.talos.dev/ but Talos's lack of support for a persistent storage partition (only separate storage device https://github.com/siderolabs/talos/issues/4041 ) really hurts most small home / office usage I'd want to try.

Re: K3s – Lightweight Kubernetes

#79

Post by qudat »

OhSoHumble wrote: post #77
diggan wrote: post #17

"Lightweight Kubernetes" and then a graph involving 2 different nodes with 10+ services running on them. Nomad seems to be a truly "lightweight Kubernetes" and for the small amount of time I've been using it, it seems to do it's job really well and it's easy to understand all the moving pieces without spending countless of hours reading docs and source code. Although, it's hard to recommend Nomad for future uses as i…

I've commented on this before in a different k8s thread (one about a k8s outage) but something that bears repeating is that the entire job market is Kubernetes. My personal experience is that it is very, very hard to find a job right now if your professional experience is primarily non-k8s orchestration systems. Most job positions out there require deep Kubernetes knowledge as well as hands-on experience with differe…

Please forgive the slight tangent but Aptible (the most successful PaaS you never heard of) is hiring and we don’t use Kubernetes

https://www.aptible.com/culture-hub/careers

Re: K3s – Lightweight Kubernetes

#80

Post by praveenhm »

maxekman wrote: post #69
praveenhm wrote: post #66

I've been closely following the discussion on k3s and Kubernetes in general. I recently acquired an M1 Mac Ultra, and I'm curious about the best options available for running Kubernetes locally on it. Does anyone have experience or recommendations in this area? I've heard about a few tools but wanted to gather insights from this knowledgeable community.

You should try out OrbStack: https://docs.orbstack.dev/kubernetes/ I switched to it completely, it’s very convenient to have both fast (-est on Mac) Docker support and a really smooth VM setup for running occasional Linux tools (such as Yocto in my case). Edit: added some background info to my recommendation.

Thanks for the orbstack recommendation, I am using it for docker containers, It is really fast and lightweight, I will try out Kubernetes.
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