Rancher on K3s

This post provides instructions about how to create a K3S kubernetes cluster and deploy Rancher Manager on it, among other applications useful in any on-prem cluster for hosting complex solutions, these applications are cert-manager to manage certificates including self-enrollment on Let’s Encrypt, longhorn to provide block storage, minio to provide Object Storage using a S3 compatible API and the Zalando’s Postgres Operator to provide PostgreSQL databases.

Keycloak Demo on Minikube

In this blog post I’ll cover how to deploy a basic keycloak and a demo application that uses the OpenId Connect protocol to authenticate users against keycloak.

Deploying K8s Ha on Ubuntu 24.04

kubeadm init --upload-certs --node-name=k8snode1 --control-plane-endpoint anthrax.garmo.local:6443 --apiserver-advertise-address 10.255.255.101 kubeadm join anthrax.

Cert Manager With Http01 Challeges

Any traffic traversing Internet should be encrypted, as, even without we knowing it, it usually contains sensitive information, even the browser’s user agent can be sensitive, for instance, if an unpatched vulnerability affects that version.

Solving the Rubik's Cube

This weekend I faced a completely different chanllenge, my daughter won a Rubik’s Cube on a youth’s camp fair and I felt compelled to play with it.

Indy Node Monitoring

Blockchain networks are spreading and Hyperledger Indy is one of the most used to provide a distributed ledger for decetralized identities, I’m working with several chains professionally, and I miss having some monitoring tools for them, so I decided to develop a monitoring PoC.