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K3s – Lightweight Kubernetes

k3s.io

191–194 of 194 posts

Re: K3s – Lightweight Kubernetes

#191

Earlier quoted context omitted.

CPU speeds haven't changed much in 10 years, and to be honest, I would argue that performance has been getting worse and is not a priority for many/most developers. The client doesn't seem to care, and just sees the 5-20 second webpage load times as totally normal (at my company/industry at least). Our applications are horrifically slow, but we're still the market leaders in our segment

> The client doesn't seem to care, and just sees the 5-20 second webpage load times as totally normal Yes, but will they tolerate 2 minute page load times? 10 minute? At some point reality kicks in and you start to have to care about the nuts-and-bolts hardware.

Most of the time those things are caused by gross development errors, not by cache hits. Stuff like looping while sending an individual SQL query for each record.

Re: K3s – Lightweight Kubernetes

#192
post #15
post #10

Not trying to be snarky, just a sincere question - why would you use kubernetes for something like IoT?

I attended KubeCon China last year and there was a very good example of a K8s setup for IoT that scales pretty well. Check these links if you’re curious: - https://schd.ws/hosted_files/kccncchina2018english/18/ShengL... - https://thenewstack.io/rancher-takes-kubernetes-management-t... Disclaimer: not affiliated with any of the companies above. Edit: formatting.

Is there any link with the talk ?

Re: K3s – Lightweight Kubernetes

#193
post #52
post #41

Earlier quoted context omitted.

> Welcome to 2019 where an "embedded" system has 1GB RAM. Thirty years ago someone could have said the same when seeing laptop computers and remembering when computer literally used to occupy whole large rooms. Come on, let's stop doing this kind of jokes, they add nothing to the discussion.

The problem is that the bottom end of 1k RAM still exists. In fact, because the main change is that it gets cheaper every year, it's even more prevalent. Just because there aren't lots of blog posts, doesn't mean that isn't a large proportion of the industry. The word 'embedded' is not well defined, but if you use it on things with 1GB of RAM, what do you call a PIC with 1K? My personal definition of embedded (which…

> The word 'embedded' is not well defined

> ...

> My personal definition of embedded (which is of course still flawed) is anything without an MMU

Probably "embedded" would better be defined as an electronic device capable of performing digital computations small enough to be put literally into other stuff, usually everyday things.

Re: K3s – Lightweight Kubernetes

#194
post #161
post #55

Earlier quoted context omitted.

Yes. I run my k8s cluster on a Proxmox host. Any specific questions you have?

I'm mostly curious how you got it all set up? Did you install something like CoreOS as the host?

Sorry for the late answer.

Host (inside the VM) is a plain Ubuntu 18.04 + Docker 18.06 and Kubernetes 1.13. Currently I have 1 Master and 2 Workers.

I tried to use LXC (and it worked), but for some reason the same setup resulted in 50% (yes, 50%) IOWAIT with LXC in comparison to 4-5% in the 3 KVMs. I didnt really care to look too far into the reason. The server I run it on only has 2 7200rpm SATA drives in Raid 1, so its obviously not the best thing youd want for massive load or an actual production setup.

But its basically my playpen + some private "production" servers, so with 1 User the performance doesnt really matter.

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