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✏️ [Blog post] Kubernetes Simplified - Introducing Cyclops
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title: Kubernetes Made Simple - Introducing Cyclops | ||
authors: [jurajk] | ||
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![Modules in Cyclops](../../static/img/2024-1-3-cyclops-overview/cyclops_overview_1.png) | ||
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If you are a developer, the chances are you have heard about Kubernetes. You heard that it is an amazing tool to help | ||
you scale your applications and manage your micro-services. But, you probably also heard that it is **VERY** complex. | ||
It is so complex that you were probably scared off. And I don’t blame you; that is the first reaction I got as well. | ||
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If you search the top posts with the Kubernetes tags on this website, you will find a myriad of tutorials and people | ||
explaining Kubernetes. These posts are the most trending because people **WANT** to understand Kubernetes because we | ||
feel like, in today's software development world, Kubernetes is unavoidable. And this is true, to an extent… | ||
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Software developers are often required to understand and work with Kubernetes; if you have ever looked for jobs in this | ||
sector, you know this already. But what if there was a tool to minimize your touching points with Kubernetes? A tool | ||
that simplifies the process and gives you guidance when trying to deploy applications into Kubernetes clusters. A tool | ||
that is highly customizable and lets someone in your organization (who understands Kubernetes, commonly known as a | ||
DevOps) create a user interface for you! | ||
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Yep, you guessed it, it’s Cyclops! 😄 | ||
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And just to clarify, Cyclops is not used to create and manage Kubernetes clusters and other infrastructure; rather, | ||
Cyclops is used for deploying and managing applications INSIDE the cluster. | ||
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### Show us your support 🙏🏻 | ||
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We are building Cyclops to be **open-source**, and your support would mean the world to us. Consider giving us a star | ||
on [GitHub](https://github.com/cyclops-ui/cyclops) and following us on [ProductHunt](https://www.producthunt.com/products/cyclops), where we scheduled our very | ||
first release! | ||
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## Before we start | ||
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In order to test out Cyclops, you are going to need a few things. If this is not your first time using Kubernetes, the | ||
chances are you already have everything ready, but we will still describe each of the components for the newcomers to | ||
the Kubernetes space. These tools are not only used for Cyclops, and you can use them for anything Kubernetes-related. | ||
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The main thing you are going to need to test out Cyclops is a Kubernetes cluster. If you have one that you can use to | ||
play with, great; if not, we will show you how to spin up a cluster on your own computer. So, the three prerequisites | ||
for doing this are: | ||
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1. [**1. Docker**](https://www.docker.com/products/docker-desktop/) | ||
2. [**2. Minikube**](https://minikube.sigs.k8s.io/docs/) | ||
3. [**3. kubectl**](https://kubernetes.io/docs/tasks/tools/) | ||
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Docker is the most popular containerization tool, and we will use it to download and spin up a Minikube image. | ||
Downloading Docker is straightforward: go to their webpage and download the Docker Desktop application. | ||
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Minikube plays the role of a Kubernetes cluster on your local machine. It is a great tool for developing and | ||
testing out your Kubernetes applications, and it is perfect for this scenario. You can find a guide on how to install | ||
it [here](https://minikube.sigs.k8s.io/docs/start/). | ||
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The final thing missing is a way of communicating with your Kubernetes cluster, and this is done through the Kubernetes | ||
command line tool called `kubectl`. It can be used to deploy applications, inspect and manage cluster resources, and | ||
view logs. In this tutorial, we will use it to install Cyclops into our cluster on Minikube and expose its | ||
functionality outside the cluster. | ||
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## Installing Cyclops | ||
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Once you have your Kubernetes cluster ready (check the *Before We Start* section), installing Cyclops is a | ||
straightforward process. Using `kubectl`, run the following command in your terminal: | ||
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``` | ||
kubectl apply -f https://raw.githubusercontent.com/cyclops-ui/cyclops/v0.0.1-alpha.5/install/cyclops-install.yaml | ||
``` | ||
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It will create a new namespace called `cyclops` and deploy everything you need for your Cyclops instance to run. | ||
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Now, all that is left is to expose the Cyclops server outside the cluster. You will need to expose both the backend and | ||
frontend with the commands below. | ||
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Expose frontend through: | ||
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``` | ||
kubectl port-forward svc/cyclops-ui 3000:3000 -n cyclops | ||
``` | ||
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And the backend through: | ||
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``` | ||
kubectl port-forward svc/cyclops-ctrl 8080:8080 -n cyclops | ||
``` | ||
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And that's it! You can now access Cyclops in your browser at [http://localhost:3000](http://localhost:3000/). | ||
If you are having trouble with the `port-forward` commands, you probably just need to wait a few of seconds after | ||
installing Cyclops into your cluster, it can take a while to start all it’s resources. | ||
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## It’s Demo Time 💥 | ||
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Now that you have your Cyclops instance up and running, it’s time to see what it’s capable of. | ||
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You should be greeted with an almost empty screen with no deployed modules showing. *Module* is Cyclops’s slang for | ||
application 😎. So, let’s start by creating our first module! | ||
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By clicking on the *Add module* button in the top right corner, you should be taken to a new screen. Here, Cyclops asks | ||
us which Helm chart do we want to deploy. | ||
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Not to go too deep, but [Helm](https://helm.sh/) is a very popular open-source package manager for Kubernetes. It helps | ||
you create configuration files that are needed for applications running in Kubernetes. These charts let Kubernetes know | ||
how to handle your application in the cluster. | ||
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Don’t worry; to showcase the basics of Cyclops, we created a simple Helm chart so that anyone can follow along. You can | ||
find what it looks like in our [GitHub repository](https://github.com/cyclops-ui/templates/tree/main/demo), along with | ||
a couple of more examples of Helm charts that you can use! | ||
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![Loaded Chart](../../static/img/2024-1-3-cyclops-overview/cyclops_overview_2.png) | ||
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As you can see, once you enter the repository of your chart, Cyclops will render a user interface. *If you want to | ||
find out the magic behind the rendering, check out our previous | ||
[blog](https://dev.to/cyclops-ui/how-cyclops-utilizes-json-schema-to-deliver-dynamical-ui-49e).* | ||
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You can fill out the fields as you wish, but be mindful of | ||
[the Kubernetes naming conventions](https://kubernetes.io/docs/concepts/overview/working-with-objects/names/)! | ||
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If you want to follow along, my input is as follows: | ||
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``` | ||
name: demo | ||
replicas: 1 | ||
image: nginx | ||
version: 1.14.2 | ||
service: true | ||
``` | ||
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We will set the module name to `demo` as well. Click save, and Cyclops will show you the details of your new module. | ||
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![Single pod Deployment](../../static/img/2024-1-3-cyclops-overview/cyclops_overview_3.png) | ||
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This screen shows you all the resources your application is using at the moment. It will list all the deployments, | ||
services, pods, or any other resource. Here, we can see that Cyclops deployed one pod into your cluster, as we specified | ||
in the replicas field. If you want to make sure that it really is running in your cluster, you can check it out by using | ||
the following `kubectl` command: | ||
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``` | ||
kubectl get pods | ||
``` | ||
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But what if all of a sudden, there was a need to scale up your application or any other resource? Well, don't worry; | ||
with Cyclops, it’s really easy! | ||
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By clicking the *Edit* button, you can change the values of your application’s resources. Let’s try to scale our | ||
application up to 3 replicas and see what happens. | ||
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![Three pod Deployment](../../static/img/2024-1-3-cyclops-overview/cyclops_overview_4.png) | ||
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You should now see two more pods in the *Deployment* tab; hurray! 🎉 | ||
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Of course, this works for any other change you might want to make to your application. Like, the service, perhaps? What | ||
if we realized we don't really need it anymore? Well, with Cyclops, it's really easy to shut it down if need be. | ||
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Click again on the *Edit* button, and this time, turn off the service toggle. | ||
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![Service shut down](../../static/img/2024-1-3-cyclops-overview/cyclops_overview_5.png) | ||
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Cyclops won't delete it automatically but will warn you (via the warning triangle sign) that you shut it down, and it is | ||
not in function anymore. This means you can safely delete it! | ||
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And if you are sick and tired of your application, you can delete the whole thing as well 🗑️ | ||
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Click on the Delete button and fill in the name of the module to safely delete it. You can, again, check if it really | ||
was deleted with `kubectl`: | ||
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``` | ||
kubectl get pods | ||
``` | ||
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## Finish | ||
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And that’s all there really is to it! Cyclops allows people with varying knowledge of Kubernetes to leverage its power. | ||
If you followed this tutorial, you should have deployed your very first application using Cyclops; congratz! 🎉 On our | ||
[webpage](https://cyclops-ui.com/), you can find one more tutorial showcasing more features and a more complicated use | ||
case, as well as our contact and community info. | ||
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If you have any sort of feedback or ideas on how to make Cyclops better, you can fill out our short | ||
[Google form](https://forms.gle/jrwcBHRtpwmK91v47)! |
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