Category Sistemas
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 […]
Problems connecting CentOS with SSH
I’ve been the error: ssh : Permission denied (publickey,gssapi-with-mic) when I try to connect to my new CentOS box. The Solution: sudo sed -i ‘s/PasswordAuthentication no/PasswordAuthentication yes/g’ /etc/ssh/sshd_config; sudo systemctl restart sshd; That’s all. Note: If changing only the PasswordAuthentication param doesn’t work, add the user in this param: … AllowUsers … <username> … Enjoy!!!
The race is on to dominate quantum computing – The Economist (Subscrition)
Great article about the future of the quantum computing in the Economist (you need subscription to read it). With the promise of outclassing even the world’s fasters supercomputers, The Economist thinks about the future of this technology. It explain the competition about the quantum between companies like IBM, Google or Microsoft and the quantum situation […]
Nos vemos en Red Hat Forum España 2018
Gran evento de Red Hat en Madrid para el próximo día 30 de Octubre de 2018. Mas información en la Web de Red Hat: Red Hat Foruem España 2018 Enjoy!!!
La nueva herramienta de IBM para la gestión multicloud
El pasado miércoles presentaba IBM en Barcelona la que es su nueva herramienta de gestión multicloud: IBM Multi-cloud Manager V3.1. Dicha herramienta viene a cubrir el segmento de gestión de múltiples plataformas cloud, tanto públicas como privadas, y el despliegue de nuevas máquinas entre dichas plataformas. La demo de gran interés establece altas espectativas a […]
All the systems need a Simian Army
Published at techblog.netflix.com on July 19, 2011, Netflix explain a tool that randomly disables their production instances to make sure to survive a failure. With an army of 7 kinds of “soldiers” everyone have a specific job: Latency Monkey induces artificial delays in our RESTful client-server communication layer to simulate service degradation and measures if upstream […]
IBM Cloud for VMware Solutions (Summary)
The best solution to migrate your infrastructures to a public cloud is IBM Cloud for VMware Solutions. With three flavors, IBM offer the possibility to integrate your Data Center in hybrid environment easily and fast. You can select from: VMware vCenter Server on IBM Cloud: Standardized compute virtualization service that combines IBM Cloud bare metal […]
TortoiseSVN icons not showing up under Windows 7
Windows can only show a limited number of Overlay Icons (15 total, 11 after what Windows uses). Programs like Office Groove, Dropbox, Mozy, Carbonite, etc, will hijack a bunch of the 11 possible overlay icons (boy would it be nice if Microsoft upped the number of these as the number of applications that use them […]
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