Continuous Delivery Foundation cdCon 2021, 9 Jul 2021

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From YouTube: Lightning Talk: LED Lights with Spinnaker Managed Delivery, AWS Controllers for... Manabu McCloskey

Description

Lightning Talk: LED Lights with Spinnaker Managed Delivery, AWS Controllers for Kubernetes, and GitOps - Manabu McCloskey, Amazon Web Services

What is declarative configuration management? What is GitOps? This session will show you how you can combine them on top of Kubernetes to create AWS resources and control your favorite LED lights.

For more Continuous Delivery Foundation content, check out our blog: https://cd.foundation/blog/

A

Hey guys, thanks for coming to my talk today, my name is manabu makolovsky. I am a solutions architect at amazon web services. uh Today I will be talking to you about spinnaker's manage service combined with ack using led lights.

A

As you can see behind me is a set of led lights, as well as a glorious picture of a cat. I also have a application and that's running in my kubernetes cluster.

A

If you look at my terminal, I am just port forwarding um port 8080 on this service to my local host and if I were to go to that localhost 8080 and there's this a little web app and if I were to press on this button, it's going to turn off that light behind me and if I press it again, it's going to turn this off.

A

It's it works right, but it's very simple and uh it would be nice to have more functionalities, like you know, adjust the brightness or being able to change the colors of the led lights. All that right.

A

um We will be doing that uh later in this talk, but before we do that, let's uh talk about the current implementations architecture, um so let me turn all right.

A

This is what the current implementation looks like. uh So we have a git reversal, that's acting as the source of truth and that get whenever you push anything to get uh jenkins is going to take the code and push a new image to the docker registry and uh once uh that that's the image is available. Spinnaker is constantly monitoring this docker registry for new images to be available when the new image is available.

A

Spinnaker is going to notice that, and it's going to instruct this kubernetes cluster to provision all the resources that's needed and when kubernetes receives that request, it's going to go out and talk to this docker hub registry and pull that requested image. And then I start running the part with that new image. Once that's done, that part is going to be able to talk to my led lights controller in my home and that's how it is working right now- and this is what the spinacles manage services ui looks like.

A

So it's a there's, a versions tab on the left. This just corresponds to docker types available within the repository so number nine. It corresponds to a docker image tag. Number, nine and number eight corresponds to adobe number, eight and so on and on the right you have this test deployment.

A

uh These are the deployments that I talked about earlier, so deployment disk uh uses the kubernetes deployment, and this one is the corresponds to kubernetes service object. Okay, um so I already have the code changes that I wanted to make. So what I'm going to do is I'm just going to push this change to the repository and we'll talk about what we changed on all that afterwards?

A

So let me just push this.

A

Okay, so once it's pushed, um what is going to happen is that jenkins is going to start building the docker image and then it's going to be available within the repository like we talked about. So while it's doing that, let's talk about the changes I just made, so this is what it uh used to look like beforehand.

A

um So this is the yamo file. That's representing that that ui that we just looked at so we have artifacts right here. um This one is just referring to just my particular artifact or the docker repository, and I have a single element defined. I just called dev and then, within that this environment I have a two resources defined one is a kubernetes service and then another is a kubernetes deployment like we talked about earlier.

A

These do not change.

A

Then another thing that I added um is this: uh this object right here.

A

This is a manifest representing the data mode tb, dynamo db table using ack for those of those of you who do not know what ack is ack is a say, a database controller for kubernetes, meaning you can submit uh this kind of custom resources to kubernetes and kubernetes is going to uh provisionally provision that that errors resource for you. So in this case we have a dynamodb table defined in this manifest and we are just telling the kubernetes operator to create this object for us.

A

um So with this, what the architecture is going to look like is like this, um so you now have this bit at the bottom, so everything else doesn't really change right, but the when you're provisioning these applications. This way it changes. So we actually now told um kubernetes to provision an amazon diamond on db table for us and that's once that's provisioned, um the new pod or that new image that we push is going to be able to use that dynamic db table and um get more functionality out of it.

A

Right in this case, we're just storing the names of the colors that we're going to support and its corresponding rgb values.

A

Okay, so with that new architecture, let's go back to our spinach minus services, ui um yeah on the left. uh If you look at it, there's a new version of artifact available um used to be number nine right, but now we have a new artifact. That's just number ten, and this is the the code that we just pushed and um so spinnaker is constantly monitoring the uh docker hub for new images.

A

So when it notices that new image is available, I'm just going to pull that and then catch that as the as a version to be deployed, and this new version is deployed to the kubernetes um cluster like we talked about. um So it's now pushed to the dev environment here and this test deployment is now using that new version of the docker image, and now we like we saw earlier, we now have three um kubernetes resources, that's being managed, we used to have deployment service, we still have those and then finally, we have the table.

A

This table object represents the dynamodb table that the application is using right now. Okay, so if we were to do a portfolio again to the service, just wait for it to be done.

A

Okay, then, if you were to go back to the or to the localhost 8080, you can see that we now have new elements to the ui right. We used to have just a toggle button, but now we have brightness as well as color that we can control.

A

So let me just make sure my screen doesn't go in the background. There you go. Maybe I gotta make a little bit bigger. Okay, and if I were to press this toggle button, it's still going to turn itself off right, but- and you know it's as expected- it works uh now. If you want to change the brightness um there, you go it's very bright in here my ass hurting, but see how far it can go.

A

Okay, it's a little too much but hey! It works right and I'm just gonna glow it a little bit because it's getting a little too much all right and then we can now change colors uh so say we want to be red submit and it's going to change this color to red. Hey pretty neat right: how about uh some blue change it to blue?

A

Oh, it's blue, and finally, you can just do like light, green or something it should work as well. Okay, see so yeah, and this is just the uh showcase of what the you can do with the um the spin glass managed service, as well as ack, or the aws controller for kubernetes like we talked about earlier.

A

This is mostly just done through this dynamo dvd table, so this dynamodb table contains the uh the colors of the um the rgb values of colors that we want to change to anyways. um Thank you guys again for joining my talk today, um yeah and just if you have any questions, please let me know thank you.