Author Archives: jramon34

How to Install OpenNebula MiniOne on Debian 10

I’ve had problems installing MiniOne of OpenNebula in Debian 10, following the steps of the kick-star guide. The original steps are: wget ‘’ sudo bash minione The first step works correctly but the second one has the next error when you executing it: jrv@nostromo:~/Documents/uoc/pec2/pregunta1$ sudo bash minione [sudo] password for jrv: ### Checks & detection […]

Probando el SMTP mediante telnet

Siguiendo, como ejemplo, el siguiente link: Use Telnet to test SMTP communication on Exchange servers: Me conecto a mi relay local: telnet 25 Trying xx.xx.xx.xx… Connected to Escape character is ‘^]’. 220 ESMTP Me conecto al servidor que enviará el correo: EHLO 250-8BITMIME 250 SIZE 104857600 Indico el Sender: MAIL […]

Backup de discos USB con dd y pv

Necesito realizar el backup de un disco USB durante varios días por temas de un proyecto. Para ello voy a utilizar los comando dd y pv como solución de backup. 1) Primero instalo el comando pv. root@jberry:~# apt-get install pv 2) Reviso la configuración del disco mediante fdisk root@jberry:~# fdisk -l /dev/sda Disk /dev/sda: 931.5 […]

Wunderlist goes away on May 6th, 2020 – Good bye my friend!!!

He estado trabajando con Wunderlist durante mucho, mucho tiempo y hoy he recibido una que creo triste noticia. Microsoft cierra en Mayo de 2020 Wunderlist para pasarlo a To Do según un correo informativo: We have some important news for you. Wunderlist is shutting down on May 6th, 2020. We hope that our new app, […]

ERROR: Loading local data is disabled

With the error in MySQL: ERROR: Loading local data is disabled – this must be enabled on both the client and server sides Review: mysql> SHOW GLOBAL VARIABLES LIKE ‘local_infile’; and execute if local_infile is off: mysql> SET GLOBAL local_infile=1; Query OK, 0 rows affected (0.00 sec) Enjoy!!!  

BeerSecOps – EP09: Gene Kim

Steve Giguere @_SteveGiguere_ of Aqua Security met with Gene Kim @RealGeneKim to discuss his personal experiences surrounding the core tenets of his new book the “Unicorn Project”, some of the difficulties as an author, and his experience with DevOps research. Gene Kim is a Wall Street Journal bestselling author, researcher, and multiple award-winning CTO. He […]

Installing Redmine in Dockers with Debian 10

My links to install Redmine on Dockers in a Debian 10 box. Follow the links and you will have all the installation and configuration of Redmine with MySQL on two dockers containers. How To Install and Use Docker on Debian 10: The dockers installation on the Debian 10 box. How to install and User Docker-Compose […]

Trabajando con SAR en Linux Debian

La aplicación SAR nos permite monitorizar el estado de nuestra máquina Linux, así como del estado de los recursos en base a cuellos de botella, problemas de rendimiento o simplemente mejora del estado de los servicios en general. Para ello incluyo varios comandos básicos para revisión de nuestros sistemas: Instalación en Debian: sudo apt-get install […]

What’s my OS? – What a great page

Tips to know the version of your operative system. Example in Linux: Open a terminal program (get to a command prompt) and type uname -a. This will give you your kernel version, but might not mention the distribution your running. To find out what distribution of linux your running (Ex. Ubuntu) try lsb_release -a or […]

Working with iptables

This is my notes, links and videos about iptables. Please, send me your informatio to upgrae the site. Concepts of iptables: Types of tables: Filter: Contains the built in chains for inputs, forwards and outputs: INPUT – packages destined for local sockets FORWARD – packets routed through the system OUTPUT – packets generated locally Nat: is consulted when […]