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When “Pre-Installed OpenWrt” Isn’t Plug-and-Play

  Lessons Learned After Finally Configuring a Raspberry Pi CM4 Mini Router (Bought in 2022) Product Mini Router built with Raspberry Pi Compute Module 4 Dual Gigabit Ethernet NICs 4GB RAM / 32GB eMMC Pre-installed OpenWrt Compact form factor, fanless, low power Background: A Device That Waited Its Turn I bought this device back in 2022 . At the time, it looked like the perfect small router: Raspberry Pi Compute Module 4 Dual Ethernet ports OpenWrt already installed No SD card required thanks to eMMC But like many homelab projects, it ended up sitting on a shelf . Fast forward to today — with more networking experience, a clearer home network plan, and a real need for a flexible router — I finally decided to configure it properly. That’s when the real journey started. What I Expected (Even in 2025) Even knowing this wasn’t a consumer router, I still expected: Plug WAN into my upstream router Plug LAN into my laptop Access 192.168.1.1 Hav...
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Installing Zsh in Ubuntu

So I decided to give it a try to Zsh
I really like the way it shows me the information at CLI and really useful when using git.



I didn't have to many issues for installing it.

Just the following commands and it works.


sudo apt-get install zsh
sudo apt-get install git-core





In case you encounter any issue this article can help you.



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Understanding Liveness, Readiness and Startup Probes in Kubernetes




























 This is a small article about understanding the liveness, readiness and startup in kubernetes.  There's good explanation in the kubernetes documentation: https://kubernetes.io/docs/tasks/configure-pod-container/configure-liveness-readiness-startup-probes/ This video also explains well the process: https://www.youtube.com/watch?v=aTlQBofihJQ But I wanted to understand it in a practical way. So I have this demo: https://github.com/DiegoTc/guest-book-js-docker/tree/Running-App-Version-1 It's a simple application running on a kubernetes cluster. https://github.com/DiegoTc/guest-book-js-docker/blob/Running-App-Version-1/argo/deployment.yaml    apiVersion: apps/v1 kind: Deployment metadata:   name: chat-ui spec:   replicas: 1   revisionHistoryLimit: 3   selector:     matchLabels:       app: chat-ui   template:     metadata:       labels:         app: chat-ui     spec:       containers:         - image: diegotc/guestbook:20230803-064434           imagePullPolicy: Alwa...




















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Modern Architecture for Native Apps with AWS Backend: A Practical Guide




























Introduction Designing a mobile app today goes far beyond building a beautiful interface. Native apps — whether for iOS or Android — need secure authentication, user role management, real-time communication with the backend, and scalable infrastructure to support growth.   In this post, I’ll walk you through a clean and modern architecture to connect native mobile apps to a robust backend on AWS. The architecture is modular, scalable, and aligned with best practices for security and performance — without relying on overly complex tools. Why it matters: apps today are more than just UI A production-grade mobile app often includes:   User login (email, Google, or others),    Differentiated access for multiple roles (e.g., user vs admin),    Secure token-based communication,    A backend capable of handling business logic and data,    Data storage, asset management, and scalable APIs,    Compliance with Google Play and App Store requirements.   All of these require a backend architecture ...




















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Getting Docker Syntax In Gedit




























I have been working with docker in the last days, and encounter the syntax issue with gedit. Just pure plain text. So make a small search and found an easy way for fixing this. I found Jasper J.F. van den Bosch repository  in GitHub and found the solution for this simple problem.  We need to download the docker.lang file, available here:  https://github.com/ilogue/docker.lang/blob/master/docker.lang   After that, you go to the folder you save the file and do the following command.   sudo mv docker.lang /usr/share/gtksourceview-3.0/language-specs/   If this doesn't work you can try the following:    sudo mv docker.lang  ~/.local/share/gtksourceview-3.0/language-specs/  And that's all!   Screenshot of gedit with no docker lang       Screenshot of gedit with docker lang      




















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