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Gabriel Garrido
Gabriel Garrido

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Published in ITNEXT

·Jul 22, 2021

Custom Kubernetes Operator With TypeScript (JavaScript).

Introduction In this article we will explore how to create a sample operator using typescript and to deploy it to our cluster, the operator will be pretty dummy in the sense that it will only deploy some resources based in a CRD, but you can customize it to do whatever you…

Kubernetes

3 min read

Custom Kubernetes Operator With TypeScript (JavaScript).
Custom Kubernetes Operator With TypeScript (JavaScript).

Published in ITNEXT

·Jan 7, 2021

Kubernetes image policy webhook explained

Introduction In this article we will explore how webhook works in kubernetes and more specifically about the ImagePolicyWebhook, the kubernetes documentation about it is kind of vague, since there is no real example or implementation that you can get out of it, so here we will break it down to the…

Kubernetes

9 min read

Kubernetes image policy webhook explained
Kubernetes image policy webhook explained

Published in ITNEXT

·Nov 29, 2020

Kubernetes: Authentication and Authorization

Introduction In this article we will explore how authentication and authorization works in kubernetes. But first what’s the difference? Authentication: When you validate your identity against a service or system you are authenticated meaning that the system recognizes you as a valid user. …

Kubernetes

3 min read

Kubernetes: Authentication and Authorization
Kubernetes: Authentication and Authorization

Published in ITNEXT

·Nov 27, 2020

Kubernetes local playground alternatives

Introduction In this article we will explore different alternatives for spinning up a cluster locally for testing, practicing or just developing an application. The source code and/or documentation of the projects that we will be testing are listed here: minikube kind Kubernetes the hard way using vagrant Kubernetes with kubeadm using…

Kubernetes

4 min read

Kubernetes local playground alternatives
Kubernetes local playground alternatives

Published in ITNEXT

·Nov 1, 2020

Testing the Operator SDK and making a prefetch mechanism for Kubernetes

Introduction In this article we will explore how to create an operator that can prefetch our images (from our deployments to all nodes) using the Operator SDK, you might be wondering why would you want to do this? …

Kubernetes

4 min read


Published in ITNEXT

·May 21, 2020

Automatic terraform linting with reviewdog and tflint

Introduction In this article we will test how to lint and get automatic checks in our github pull requests for our terraform code using reviewdog and the tflint github action, this is particularly useful to prevent unwanted changes or buggy commits to be merged into your principal branch whatever that…

Terraform

2 min read

Automatic terraform linting with reviewdog and tflint
Automatic terraform linting with reviewdog and tflint

Feb 3, 2020

Gitlab-CI Basics

Introduction In this article we will continue where we left off the forward project last time, in this article we will use gitlab-ci to test, build and push the image of our operator to dockerhub. Gitlab offers a pretty complete solution, but we will only sync our repo from github and…

Golang

4 min read

Gitlab-CI BasicsIntroduction
Gitlab-CI BasicsIntroduction

Published in ITNEXT

·Jan 25, 2020

Cloud native applications with kubebuilder and kind aka kubernetes operators

Introduction In this article we will see how to use kubebuilder and Kind to create a local test cluster and an operator, then deploy that operator in the cluster and test it, the repository with the files can be found here, also if you want to learn more about the…

Kubernetes

3 min read

Cloud native applications with kubebuilder and kind aka kubernetes operators
Cloud native applications with kubebuilder and kind aka kubernetes operators

Sep 8, 2019

Brief introduction to terratest

Introduction In this article we will see the basics to have tests for your terraform code using a re-usable pattern, we will use the code from the last article Serverless authentication with Cognito, so refer to that one before starting this one if you want to know how did we…

Docker

3 min read


Sep 6, 2019

Serverless authentication with Cognito and Go

Introduction In this article we will see how to use Terraform and Go to create a serverless API using API Gateway, Lambda, and Go, and we will also handle authentication with AWS Cognito, the repo with the files can be found here. Terraform In this example I used terraform 0.12…

AWS Lambda

4 min read

Gabriel Garrido

Gabriel Garrido

https://twitter.com/kainlite

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