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Kubernetes Academy, a free product-agnostic education platform

kubernetes.academy

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Re: Kubernetes Academy, a free product-agnostic education platform

#21

Post by streetcat1 »

deforciant wrote: post #13
discordianfish wrote: post #11

Earlier quoted context omitted.

> lot of the core features of k8s and container orchestration is getting abstracted away I see this too and it worries me. You should rarely have to do this. CRDs tend to get overused. I'd encourage everyone to think twice before adding a custom controller. Vanilla k8s (with cloud-provider integration) is powerful, useful, and complex as it is.

totally agree :) I have been running Kubernetes in production for several years now on multiple projects. So far I had no need to use any CRDs or even Helm. Just well maintained deployments, services, secrets and ingress manifests.

So how do you run stateful workloads? E.g. postgres or mysql?

Re: Kubernetes Academy, a free product-agnostic education platform

#22

Post by streetcat1 »

eropple wrote: post #18
Townley wrote: post #15

Earlier quoted context omitted.

That push towards growth is real across both sides of the developer-administrator spectrum (I know many experienced developers struggling through React/Vue, ETL pipeline tools, or more devops than they'd prefer). Across the board, it's partially fad and hype, but it's also because these workflows really are better. On the k8s side, a containerized architecture gives developers peace of mind in their local environment…

> a containerized architecture gives developers peace of mind in their local environments ...unless you use cloud-specific services, which almost everybody should be doing because the management load of self-hosted alternatives is very high. Correctly care-and-feeding a message queue or a log store is so much more work than creating an SQS queue or a Kinesis shard, especially when you are not running a company center…

I think that you might be able to replace SQS specific queues with knative eventing. This should provide some insulation from aws specific services.

Re: Kubernetes Academy, a free product-agnostic education platform

#24

Post by weberc2 »

Townley wrote: post #15
shyneeup wrote: post #8

the hype around k8s is unreal..... But should everyone even learn k8s? A lot of the core features of k8s and container orchestration is getting abstracted away at a rapid pace with more things being built on top of k8s. I see this at my current company where we have a ton of ops people who have only ever used vmware....with cloud migration and container focused workflows being the standard now they are fearing like t…

That push towards growth is real across both sides of the developer-administrator spectrum (I know many experienced developers struggling through React/Vue, ETL pipeline tools, or more devops than they'd prefer). Across the board, it's partially fad and hype, but it's also because these workflows really are better. On the k8s side, a containerized architecture gives developers peace of mind in their local environment…

> On the k8s side, a containerized architecture gives developers peace of mind in their local environments

We're looking at moving away from containerized local development (using Docker for Mac on high-end MacBook Pros) because the performance is abysmal. The Linux VM eats 100% CPU at idle (i.e., with no containers running at all) and our handful of pretty simple containers bring the machines to their knees. It's unclear if we're hitting some pathological case (maybe volumes of 100s of MBs?) but there are many, many other issues filed against Docker for Mac about its high CPU usage. We've tried all of the usual things--blowing away the VM, tinkering with different resource allocations for the VM, etc, but we haven't had much luck (nor have the other users who have filed issues against Docker for Mac, judging by the comments).

Re: Kubernetes Academy, a free product-agnostic education platform

#25

Post by druddha »

shyneeup wrote: post #8

the hype around k8s is unreal..... But should everyone even learn k8s? A lot of the core features of k8s and container orchestration is getting abstracted away at a rapid pace with more things being built on top of k8s. I see this at my current company where we have a ton of ops people who have only ever used vmware....with cloud migration and container focused workflows being the standard now they are fearing like t…

> But should everyone even learn k8s?

Of course not.

Different orgs will approach this problem differently. At my company, someone on our infra/devops team made pretty good abstractions eight years ago, and now we're using those same abstractions on top of K8s. So our devs really don't need to know anything about the substrate. But when I go to conferences and meetups, I talk to folks who basically expose the entirety of K8s to devs and expect them to self-serve.

Re: Kubernetes Academy, a free product-agnostic education platform

#27

Post by mercules »

shyneeup wrote: post #8

the hype around k8s is unreal..... But should everyone even learn k8s? A lot of the core features of k8s and container orchestration is getting abstracted away at a rapid pace with more things being built on top of k8s. I see this at my current company where we have a ton of ops people who have only ever used vmware....with cloud migration and container focused workflows being the standard now they are fearing like t…

Not everyone should learn k8s. It is concerning to see people become desperate to learn to code so as to not be "left behind", this will likely lead to some very disenfranshised individuals in the future

Re: Kubernetes Academy, a free product-agnostic education platform

#28

Post by eropple »

streetcat1 wrote: post #22
eropple wrote: post #18

Earlier quoted context omitted.

> a containerized architecture gives developers peace of mind in their local environments ...unless you use cloud-specific services, which almost everybody should be doing because the management load of self-hosted alternatives is very high. Correctly care-and-feeding a message queue or a log store is so much more work than creating an SQS queue or a Kinesis shard, especially when you are not running a company center…

I think that you might be able to replace SQS specific queues with knative eventing. This should provide some insulation from aws specific services.

1) I don't use "work-in-progress" things in production (unless I own it and wrote it) and I have a hard time recommending others do so.

2) It's not just events in your application you have to worry about, but environmental stuff as well. SNS is the lingua franca of AWS and you've gotta put it somewhere, with reliability guarantees. That increases the amount of orchestration you have to do outside the safe-and-happy confines of k8s itself, and that makes my job way harder than having only-one-road-to-plow.

At my current company we use ECS/Fargate, but it's only really so we don't have to manage servers; each ECS service has one task and is independently managed. And it interacts directly with the baseline cloud provider so there's no weird jank at the edges of our compute vs. our datastores. The containers are a convenience here--I'd use EC2 just as readily. But I see no real value to using k8s instead and haven't at any of my consulting gigs to date, either. The k8s environment is both incomplete and at best kinda-incompatible with the things that actually matter, like your data, and TBH it casts real doubt on the reason to use it.

Re: Kubernetes Academy, a free product-agnostic education platform

#29

Post by brown9-2 »

sixhobbits wrote: post #26

The title implies that this is an education _platform_ - I was expecting something like Edx. I also don't understand the "product-agnostic" part. Isn't k8s a product? This looks like it's simply free k8s related course content.

I think they mean cloud-provider-agnostic.
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