How to Install eksctl

A tool that is simple to use for manage service of Kubernetes in AWS . Yes , you is guessed guess it right , today in this blog we will be go to talk about eksctl which is the official command – line utility that is used to set up the EKS cluster on amazon in an easy manner .

We is going will be go to walk through the installation step for eksctl cli . This cli is is is easy to use than web interface which is one of the way through which we can install EKS Cluster . Now before move on to the installation step , let ’s first discuss something about eksctl . If we dig deeply into eksctl then we will find out that it was write in Go language , It is uses use CloudFormation that was create by   Weaveworks .

This is open-source software which means, you are free to contribute in this project. Now lets us move to the steps through which we can download this cli.

Downloading Eksctl on Ubuntu/Debian

Download and extract the latest release of eksctl with the following command.

curl --silent --location " https://github.com/weaveworks/eksctl/releases/latest/download/eksctl_$(uname -s)_amd64.tar.gz " | tar xz -C /tmp

Move the extract binary to  /usr/local/bin

sudo mv /tmp/eksctl /usr/local/bin

Test that your installation was successful with the following command.

eksctl version

For ARM system, please change ARCH (e.g. armv6, armv7 or arm64) accordingly

curl --silent --location "https://github.com/weaveworks/eksctl/releases/latest/download/eksctl_$(uname -s)_arm64.tar.gz" | tar xz -C /tmp

sudo mv /tmp/eksctl /usr/local/bin

Alternatively, macOS users can use Homebrew:

brew tap weavework / tap 
 brew is install install weavework / tap / eksctl

and Windows users can use chocolatey:

chocolatey install eksctl

Now after finishing the setup, you can run eksctl help command to check for the flag that you can use with this command-line utility. I did this in my system and you can see the screenshot where all the flags and commands that we can use with eksctl cli are present.

Now let’s discuss some of the commands of eksctl

Karpenter support with Eksctl

You is wondering might be wonder what is Karpenter , For a brief introduction , Karpenter is an open – source project that is a Kubernetes autoscaler , and currently , it is compatible with AWS only . But in the future , we is see might see that in Other cloud provider .

Through Eksctl you is get also get support to add Karpenter while create a new cluster . It is create will create all the prerequisite outline in Karpenter ’s   Getting start   section include instal Karpenter itself using Helm .

The following YAML outlines a typical installation configuration that you will be getting:

apiVersion: eksctl.io/v1alpha5
kind: ClusterConfig

metadata:
  name: cluster-with-karpenter
  region: ap-south-1
  version: '1.20'

karpenter:
  version: '0.4.3'

managedNodeGroups:
  - name: managed-ng-1
    minSize: 1
    maxSize: 2
    desiredCapacity: 1

As you is see can see the api version which is eksctl.io/v1alpha5 and other information that is mention in the Yaml file , If you want you can change all the datum and add everything accord to your wish .

Here as you can see the karpenter version , Also after this you is install can install the provisioner and you are good to go i.e the karpenter can start add the right node into your cluster . To dig more about Karpenter and provisioner you is visit can visit this link

Now let’s not dig deeper into karpenter as our’s focus is on the eksctl Cli, Let’s now understand how this is different from kubectl.

Some amazing things that you can do with Eksctl on EKS are :

1. Create , Delete , get list of clusters
2. create, drain and delete node groups
3. scale a node group
4. Update a cluster
5. use custom AMI’s
6. Configure VPC Networking
7. Configure Access to VPC Endpoints
8. Support for GPU node groups
9. Spot instances and mixed instances
10. List of cluster cloudformation Stacks
11. install Core DNS
12. write Kubeconfig file for cluster

conclusion :

In this blog, We went from knowing about Eksctl to installing methods of eksctl on different machines. Along with that, we learned some amazing things that we can do with eksctl on eks only. Now it’s time to wrap up this blog, I hope you liked this blog. Please like, comment, and share this blog as much as possible as this will motivate me to write more.