Nahuel Hernandez

Nahuel Hernandez

Another personal blog about IT, Automation, Cloud, DevOps and Stuff.

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.

AWS Security Certification Tips

The AWS Certified Security Specialty is an examen you need to demonstrate knowledge about securing the AWS platform, the most important topics to look at are KMS, Policies, GuardDuty, Inspector, Macie, Cloudtrail, Config, WAF and Shield.

4-Minute Read

aws-security-cert

The AWS Certified Security Specialty (SCS-C01) validates an examinee’s ability to effectively demonstrate knowledge about securing the AWS platform. The exam is a 65 multiple-choice exam and we need to finish in less than 170 minutes.

Coldcard Ultra Secure Bitcoin Hardware Wallet

Setup for first time a Coldcard Wallet in a secure way

4-Minute Read

Coldcard

A hardware wallet is a type of cryptocurrency wallet where you can store your private keys in a secure physical device. They have major advantages over standard software wallets: private keys are often stored in a protected area of a microcontroller, and cannot be transferred out of the device in plaintext.

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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.