Why is Kubernetes getting so popular? • Hacker News Board

Re: Why is Kubernetes getting so popular?

#611

Post by t_sawyer » Sat, May 30, 2020, 4:47 PM UTC

hyperbovine wrote: post #299

Because Google made it. Same thing with Tensorflow. And, fun fact, both are massively overhyped and a real PITA to learn and use. But Google uses it, so hey.

This just isn’t true. I’ve never used Tensorflow but Kubernetes is great.

We moved to it from docker swarm because docker swarm still has a lot of glitches with its overlay network. Rolling upgrades would leave stale network entries and its impossible to reproduce. Sometimes it happens sometimes it doesn’t.

With a managed solution, Kubeadm, or RKE it’s not hard to deploy anymore. All our infrastructure is in code, is immutable, and if you’re careful can be deployed into any kubernetes cluster.

Just like Docker has been great for easily deploying open source products, kubernetes is great for doing the same thing when you need to deploy horizontally. It’s easy for OSS to provide a docker image, a docker compose file for single node deploy, and Kubernetes yaml for a horizontal deploy.

Re: Why is Kubernetes getting so popular?

#612

Post by pjmlp » Sat, May 30, 2020, 4:47 PM UTC

kag0 wrote: post #608

pjmlp wrote: post #602

Earlier quoted context omitted.

And this is why I only give Linux like one decade more to still be relevant on the server. With hypervisors and managed environments taking over distributed computing, if there is a kernel derived from Linux or something completely different, it is a detailed that only the cloud provider cares about.

That doesn't really make sense in the context of docker. It's still Linux inside the container. Even if it's some abstract non-Linux service thing running the container, what happens in the container is still the concern of the developer.

Yes it does, my application written in Go, Java, .NET, doesn't care if the runtime is bare metal, running on an hypervisor type 2, type 1 or some other OS.

I run Docker on Windows Containers, no Linux required.

There are also the ugly named serverless deployments, where the kernel is meaningless.

Re: Why is Kubernetes getting so popular?

#613

Post by p_l » Sat, May 30, 2020, 4:57 PM UTC

kasey_junk wrote: post #274

silviogutierrez wrote: post #4

For me, and many others: infrastructure as code. Kubernetes is very complex and took a long time to learn properly. And there have been fires among the way. I plan to write extensively on my blog about it. But at the end of the day: having my entire application stack as YAML files, fully reproducible [1] is invaluable. Even cron jobs. Note: I don't use micro services, service meshes, or any fancy stuff. Just a plain…

Conversely I think the trend of writing infrastructure as yaml may be the worst part of modern ops. It’s really hard to think of a worse language for this.

Fortunately YAML is not actually necessary in k8s, and only provided as a convenience because writing JSON by hand (or Proto3, lol) is annoying verging on insane.

We can build higher level abstractions easily having a schema to target and we can build them in whatever we want. That's a big boon for me :)

Re: Why is Kubernetes getting so popular?

#614

Post by p_l » Sat, May 30, 2020, 5:01 PM UTC

d23 wrote: post #199

sev wrote: post #177

Earlier quoted context omitted.

I think this is a good answer. I'll add that as soon as you need to do something slightly more complex, without something like k8s you aren't going to be happy with your life. With k8s, it's almost a 1 liner. For example, adding a load balancer or a network volume or nginx or an SSL cert or auto scaling or...or...or...

Come on. What? Setting up a load balancer or nginx is considered complex now?

There's huge difference between manually setting up load balancer - let's say HAproxy - and being able to just declare in an application that it needs "this and this configuration to route HTTP traffic to it."

The time I spent managing HAproxy for 5 services was bigger than the time I spent managing load-balancing and routing using k8s for >70 applications that together required >1000 load balanced entrypoints.

It's a lever for the sysadmin to spend less time on unnecessary work.

Re: Why is Kubernetes getting so popular?

#615

Post by waheoo » Sat, May 30, 2020, 5:20 PM UTC

fxtentacle wrote: post #523

Perseids wrote: post #475

Earlier quoted context omitted.

True, but the alternative to C++ with that reasoning is Rust or Go (depending on your liking), not Ruby. And with both of these you can step around a lot of deployment issues, because a single server can be sufficient for quite high loads. Avoid distributed systems as much as you can: https://thume.ca/2020/05/17/pipes-kill-productivity/

It depends. If you want to be a successful indie company, avoid cloud and distributed like the plague. If you want to advance in the big corp career ladder, user Kubernetes with as many tiny instances and micro-services as you can. "Oversaw deployment of 200 services on 1000 virtual servers" sounds way better than "started 1 monolithic high-performance server". But the resulting SaaS product might very well be the sa…

I just tell people I use a mono repo to house all my single file microservices.

Php under apache.

Re: Why is Kubernetes getting so popular?

#616

Post by buboard » Sat, May 30, 2020, 5:22 PM UTC

zelly wrote: post #394

Main benefits of Kubernetes: • Lets companies brag about having # many production services at any given time • Company saves money by not having to hire Linux sysadmins • Company saves money by not having to pay for managed cloud products if they don't want to • Declarative, version controlled, git-blameable deployments • Treating cloud providers like cattle not pets It's going to eat the world (already has?). I was…

What is your estimate about when we ll be ready to have that discussion?

Re: Why is Kubernetes getting so popular?

#617

Post by waheoo » Sat, May 30, 2020, 5:26 PM UTC

jason0597 wrote: post #568

Perseids wrote: post #520

Earlier quoted context omitted.

> Plus, there's a great desire to go for an utopian future cleaning up all that's wrong with current tech. This [...] is the case with Rust [...]. Starting over is easier and more fun than fixing your shit. The domain I'm working in might be non-representative, but for me fixing my shit systematically means switching from C++ to Rust. The problems the borrow checker addresses come up all time either in the form of se…

Have you tried modern C++ before switching to rust? Or were you already using it and it didn't provide all the necessary features?

Does it have a borrow checker?

Re: Why is Kubernetes getting so popular?

#618

Post by spenrose » Sat, May 30, 2020, 5:28 PM UTC

saalaa wrote: post #502

zelly wrote: post #394

Main benefits of Kubernetes: • Lets companies brag about having # many production services at any given time • Company saves money by not having to hire Linux sysadmins • Company saves money by not having to pay for managed cloud products if they don't want to • Declarative, version controlled, git-blameable deployments • Treating cloud providers like cattle not pets It's going to eat the world (already has?). I was…

This, and more but it's all in the same vein. I was pretty skeptical too but then handed over a project which was a pretty typical mixed bag: Ansible, Terraform, Docker, Python and shell scripts, etc... Then I realized relying on Kubernetes for most projects has the huge benefit of bringing homogeneity to the provisioning/orchestration which improves things a lot both for me and the customer or company I work for. Le…

As a fellow Kubernetes-hater, this is the best explanation I've read for its virality. Thanks!

Re: Why is Kubernetes getting so popular?

#619

Post by pjmlp » Sat, May 30, 2020, 5:31 PM UTC

Somehow k8s capabilities look like a description of WebSphere feature list, just done with cooler technology for younger generations.

Re: Why is Kubernetes getting so popular?

#620

Post by waheoo » Sat, May 30, 2020, 5:32 PM UTC

collyw wrote: post #595

pwdisswordfish2 wrote: post #528

Earlier quoted context omitted.

Except to some of us it shows just the opposite.

Its starting to get depressing at my age. After nearly 20 years in the industry I think I have a knack for keeping things as "simple as necessary and no more" and managing complexity. Unfortunately interviews are full of bullshit looking at pedantic nitpicking, or stuff I learned 20 years ago in university and have never needed to use since.

Just focus on staying relevant with new languages and ignore the hypetrain that is k8s. Its something you can learn on the job and can easily talk your way around in an interview.

The older i get the more i realise the less i want in my stacks.

This article listed as a benefit, frequent, multiple major updates each year, new features and no sign of it slowing down. I just cringed and wondered who the fuck is asking for this headache?

Ive been working a lot with wordpress lately and the stability of the framework is spoiling me rotten.