Posts

I’m sure you’ve heard about Scrcpy! it’s a pretty nice tool that allows you to display and control an Android devices from your PC either usb or TCP/IP, hence on this post I will explained how to set up Scrcpy in Fedora 33 by using copr repo. It’s really useful, and believe me if I told you that; from one of my last job, one of my colleagues got the idea to install it, and thanks to that the dev team saved a lot of time testing a app integration remotely. ...

From my last post (Arduino-oled-display) I added a new function that allows me to send notification/messages from my terminal (linux) to my Arduino and it shows it through the little Oled screen. Here I will share the commands and code lines to get done the serial communication on your project. void loop() { while (Serial.available() > 0) { char recieved = Serial.read(); inData += recieved; // Process message when new line character is received if (recieved == '\n') { Serial.print("Arduino Received: "); Serial.print(inData); //digitalWrite(ledPin, HIGH); // if(inData == "HELLO\n") { // DON'T forget to add "\n" at the end of the string. Serial.println("HELLO"); //digitalWrite(ledPin, LOW); display.clearDisplay(); display.setCursor(0,0); display.setTextSize(2); display.print("Hi jose!"); display.display(); delay(3000); } inData = ""; // Clear received buffer } } }

The following post explains how to open and connect your Nextcloud’s DB (MariaDB) by a ssh tunnel. Field description: Server side(GNULinux): Nextcloud: running on Docker-compose engine. OS: Debian with Docker compose installed. Database: MariaDB. Localhost side(GNULinux): OS: Fedora. CLient: Dbeader 7.2.5 Further information you can go to my docker compose Statement here. Edit your docker-compose.yml and add the “ports” key into the statement. $ nano docker-compose.yml ports: - 5555:3306 port: 5555 –> Host. port: 3306 –> Container. From the above the port “5555” it was used as example. ...

Following the last post, where I shared how to use Telegram’s bot; on this post I’m going to explain how implement it by Chat Nextcloud API. This post is useful for those have a Nexctcloud deployment running at home/cloud. Assuming you have already Nextcloud up and running, we can create the new user, that we are gonna use it as “BOT” we will need the chat room token and the “BOT” credentials. ...

From one older post “Create a job using crontab” I used into my script the service exim4/ssmtp as mail server using gmail, but as we’re trying to walk away of Google’s jaw, I switched my notification engine to Telegram by an API service(bot)… almost it’s a step forward ! :) Requirement: Bot (Telegram) Web Browser Terminal(script) I will assume you have already set up your Bot on Telegram with BotFather When you have already created your Bot you can check by the API through a web browser ...

Below you will see the statement I used to deploy a Wordpress as db mariadb (mysql); I shared it to you, cos I’ve been looking out for a good .yml statement piece, but some of them are older or put other set frontend as nginx, etc. I did a simple and easier deployment statement, so here we have: version: '3.3' services: wordpress: depends_on: - db image: wordpress:latest volumes: - ./html:/var/www/html ports: - "8080:80" restart: always environment: WORDPRESS_DB_HOST: db:3306 WORDPRESS_DB_USER: wordpress WORDPRESS_DB_PASSWORD: password links: - db depends_on: - db db: image: mariadb:10.5.4-focal volumes: - ./db_data:/var/lib/mysql restart: always environment: MYSQL_ROOT_PASSWORD: SECRET MYSQL_DATABASE: wordpress MYSQL_USER: wordpress MYSQL_PASSWORD: password ports: - "3306:3306" You can switch the local mount to volume mount it will depend of you design. ...

Requisitos: RaspberryPi –> https://www.raspberrypi.org/downloads/raspberry-pi-os/ OpenVPN –> https://pivpn.io/ Cuenta abierta –> https://www.noip.com/ Una IP Estatica en tu Raspberry –> Router manual Router con capacidad de tunel VPN —> IPsec, PPTP, L2TP. Public IP —> https://www.whatismyip.net/ Pasos: 1. Crear DNS Record A en Noip Apunta tu IP publica Abre tu sesion con tus credenciales en Noip Dentro del Dashboard ve al apartado “Dynamic DNS > Create Hostname” rellena: hostname, ejemplo: test Domain, ejemplo: ddns.net IPv4 address: Tu IP publica Click en Crear ...

Into my Devops learning path 👨‍💻 I decided to deploy a monitoring centre into my workstation where I could be able to watch my containers, resources, logs, etc and continue improving my knowledge, in my case I’m using Silverblue developed by Fedora so in here it’s a little bit different the setup; as monitoring tool I choose Cockpit for its great integration and support. Workstation: Silverblue 🖥️ Container engine: Podman ⚙️ Monitoring tool(app/service):Cockpit 📦 I splinted out the instructions in 4 simple parts: ...

Resume to set a domain name in Linux concepts: FQDN (Fully Qualified Domain Name) eg: hostname = server1 // FQDN = server1.example.com 1. First add FQDN to your hostname in /etc/hosts file. # cat /etc/hosts 10.120.68.23 server1.example.com server1 confirm the FQDN issue the following command: # hostname -f server1.example.com 2.1. Configure domain name (Red Hat RHEL, Fedora and CentOS) From these path add the parameters needs vi /etc/sysconfig/network DOMAINNAME=<domainname> vi /etc/sysctl.conf kernel.domainname = <domainname> 2.2. figure domain name ( Ubuntu, Debian) #vi /etc/hostname server1 Then restart the service: ...

On this post I’ll explaining how to setup a little OLED screen 128X64 on Arduino Leonardo Tools: Chit: Arduino Leonardo Screen: Led OLED display 128x64 bought here Workstation: Silverblue Fedora 33 Compiler: Arduino IDE Over here you can see the connection diagram. Steps: Install the Arduino IDE from Flathub repo. Now you have the flatpak Arduino app, below you will see older information related to a bug of the last Arduino Flatpak version, but now it fixed. Please continue with the 3th step. 2. Launch the Arduino IDE: ...