Nahuel Hernandez

Nahuel Hernandez

Architecture, decisions, and anti-patterns from running AWS and Kubernetes in production. Containers, GitOps, and the things the official docs do not cover.

CKS Kubernetes Specialist Security Certification

The Certified Kubernetes Security or CKS is a challenging exam. Performance-based test that requires solving multiple issues from a command line. I studied and passed the 3 Kubernetes Certifications (CKA/CKAD/CKS), and I want to share valuable information to prepare and pass this exam.

41-Minute Read

cks

The Certified Kubernetes Security Specialist or CKs is a hands-on test and consists of a set of performance-based items (15 problems) to be solved using a command line and is expected to take approximately two (2) hours to complete.

CKA Kubernetes Administrator Certification

The Certified Kubernetes Administrator or CKA is a challenging exam. Performance-based test that requires solving multiple issues from a command line. I studied and passed the 3 Kubernetes Certifications (CKA/CKAD/CKS), and I want to share valuable information to prepare and pass this exam.

57-Minute Read

CKAD Certification

The Certified Kubernetes Administrator or CKA is a hands-on test and consists of a set of performance-based items (17 problems) to be solved using a command line and is expected to take approximately two (2) hours to complete.

Kubernetes Applications on Raspberry PI 4

I want to deploy some testing applications on Kubernetes with automatic deployments triggered from a Git repository. So this was a fantastic excuse to build a Raspberry PI 4 Rack for self-hosting applications. The solution includes K3S (lightweight Kubernetes), Jenkins (for the CICD pipeline), Docker (to build and host the container images), and Gitlab CE (self-managed GitLab). This combination allows me to don't need any external service.

9-Minute Read

raspberry

I need to deploy applications to a Self-hosted K8S Cluster. Also, I need to automate the deployments using Jenkins and an own Git server for the applications code using Gitlab CE. I will use 2 Raspberry PI for the solution. On the first Raspberry PI (aka rpi4a) I will install Kubernetes and Docker, and on the second (aka rpi4b), I will install Gitlab and Jenkins.

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Over 15-year experience in the IT industry. Working in SysOps, DevOps and Architecture roles with mission-critical systems across a wide range of industries. Wide experience with AWS, Terraform, Kubernetes, Containers, CI/CD pipelines, and Linux. Always keeping up with the latest technologies. Passionate about automating the run of the mill. Big focus on problem-solving.