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MicroK8s – Low-ops, minimal Kubernetes, for cloud, clusters, Edge and IoT

microk8s.io

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Re: MicroK8s – Low-ops, minimal Kubernetes, for cloud, clusters, Edge and IoT

#11

Post by Jonnax »

kissgyorgy wrote: post #6

If anybody seriously believe that Kubernetes is good on Edge and IoT, our industry is in deep trouble. I usually like Canonical, but this is next level bullshit.

Care to explain why? And what industry you're talking about?

Kubernetes has made efforts for nodes to work with poor network connectivity.

The node requirements aren't that big.

A lot of use cases are relatively easy to containerise.

And edge / IoT devices are getting more powerful as well.

They aren't talking about consumer IoT here as well.

It has become a meme that Kubernetes is complicated. But it solves a lot of orchestration problems that would need to be implemented in other ways.

Re: MicroK8s – Low-ops, minimal Kubernetes, for cloud, clusters, Edge and IoT

#12

Post by kohlerm »

kissgyorgy wrote: post #6

If anybody seriously believe that Kubernetes is good on Edge and IoT, our industry is in deep trouble. I usually like Canonical, but this is next level bullshit.

I guess that depends on your definition of "Edge". There are quite few a "hybrid" (cloud plus on-prem) use cases where running K8s on-prem can be a good option. If you check https://azure.microsoft.com/en-us/products/azure-stack/edge/... those devices can easily run a K8s cluster.

Re: MicroK8s – Low-ops, minimal Kubernetes, for cloud, clusters, Edge and IoT

#13

Post by ofrzeta »

hardwaresofton wrote: post #5

Deploying k8s has gotten a lot easier these days -- some alternatives in this space: - https://docs.k0sproject.io ( https://github.com/k0sproject/k0s ) - https://k3s.io ( https://github.com/k3s-io/k3s/ ) k0s is my personal favorite and what I run, the decisions they have made align very well with how I want to run my clusters versus k3s which is similar but slightly different. Of course you also can't go wrong with k…

I had a good time with Kubespray. Essentially you just need to edit the Ansible inventory and assign the appropriate roles.

Re: MicroK8s – Low-ops, minimal Kubernetes, for cloud, clusters, Edge and IoT

#14

Post by cyberpunk »

ofrzeta wrote: post #13
hardwaresofton wrote: post #5

Deploying k8s has gotten a lot easier these days -- some alternatives in this space: - https://docs.k0sproject.io ( https://github.com/k0sproject/k0s ) - https://k3s.io ( https://github.com/k3s-io/k3s/ ) k0s is my personal favorite and what I run, the decisions they have made align very well with how I want to run my clusters versus k3s which is similar but slightly different. Of course you also can't go wrong with k…

I had a good time with Kubespray. Essentially you just need to edit the Ansible inventory and assign the appropriate roles.

Sure, if it works, upgrades are somewhat fraught though (I mean, upgrading a 20 node cluster is an hour long ansible run, or it was when we were using it)

We switched to rke, it’s much better.

Re: MicroK8s – Low-ops, minimal Kubernetes, for cloud, clusters, Edge and IoT

#15

Post by GrantZvolsky »

m1ghtym0 wrote: post #2

How does it compare against minikube? Seems to be based on Snaps vs minikube's VM-based approach. Any other major pros/cons?

From my experience of using microk8s for mostly offline development and trying minikube once:

Microk8s pros:

- bind-mount support => it is possible to mount a project including its node_modules and work on it from the host while it hot-reloads in the pod.

- The addons for dns, registry, istio, and metallb just work.

- Feels more snappy than minikube.

Microk8s cons:

- Distributed exclusively via snap => can't be easily installed on nix/nixos.

Re: MicroK8s – Low-ops, minimal Kubernetes, for cloud, clusters, Edge and IoT

#16

Post by stavros »

Kostic wrote: post #4

From all of the low-ops K8s distributions, k3s[0] is the best from perspective of inital setup, maintenance and usage on less powerful hardware. There are even now higher-level tools such as k3os and k3sup to further reduce the initial deployment pains. MicroK8s prides with 'No APIs added or removed'. That's not that positive in my book. K3s on the other hand actively removes the alpha APIs to reduce the binary size…

This looks interesting, what control plane do the nodes usually connect to? I'm trying to see the use case for me, where I have a main NAS in my house and a few disparate Raspberry Pis, but I'm not sure if I would run the control plane on the NAS or if I would use a hosted one somewhere else.

Re: MicroK8s – Low-ops, minimal Kubernetes, for cloud, clusters, Edge and IoT

#19

Post by rcarmo »

Kostic wrote: post #4

From all of the low-ops K8s distributions, k3s[0] is the best from perspective of inital setup, maintenance and usage on less powerful hardware. There are even now higher-level tools such as k3os and k3sup to further reduce the initial deployment pains. MicroK8s prides with 'No APIs added or removed'. That's not that positive in my book. K3s on the other hand actively removes the alpha APIs to reduce the binary size…

I've had a number of issues with k3s on very low spec hardware (typically ARM), where it would take up to 25-50% of CPU just sitting idle with no pods. Stopped using it for those scenarios a year ago, wonder if that's fixed.

Re: MicroK8s – Low-ops, minimal Kubernetes, for cloud, clusters, Edge and IoT

#20

Post by rcarmo »

kalev wrote: post #18

Having a RaspberryPi laying idle in a drawer somewhere, I wonder if others have installed microk8s or k3s on it. What kind of workloads are you running on it? Whoever has OpenFaas installed on your rpi, what type of functions are you running?

I mostly gave up on containers on Pis due to the overhead (disk space, deployment hassles with private registries, etc.). Built my own mini-Heroku and run all my services/functions there: https://github.com/piku
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