Julio's Blog


Architecting your first OpenStack cloud.

OpenStack is the most popular open-source cloud computing platform to build and manage infrastructure-as-a-service (IaaS) environments. Since its inception in 2010 by Rackspace Hosting and NASA this project has gained popularity and positioned itself as a reliable alternative to proprietary IaaS platforms. Now under the management of the OpenStack Foundation and with more than 30,000 Individual Members from over 170 countries around the world, OpenStack is thriving and increasing its presence in enterprise IT environments. In this article, I will be sharing best practices for the adoption of OpenStack as your IaaS platform and the necessary steps to take while building your cloud. In my... read more »


10 things to do after installing Fedora 24.

In this post, I will cover the top 10 things to do after a fresh install of Fedora 24. In my case I use a Fedora workstation spin (Fedora 24 Cinnamon) and here are the things that I do after a fresh install: 1. Set the hostname [[email protected] ~]# hostnamectl set-hostname desktop.quebolon.local Verify it: [[email protected] ~]# hostname desktop.quebolon.local 2. Enable and configure SSH Enable and start SSH: [[email protected] ~]# systemctl enable sshd; systemctl start sshd Created symlink from /etc/systemd/system/multi-user.target.wants/sshd.service to /usr/lib/systemd/system/sshd.service. Verify that SSH is working: [[email protected] ~]# systemctl status... read more »


Upgrading to Fedora 24.

In today post I will show you how to upgrade to Fedora 24 from Fedora 23. The first thing that we are going to check the current version of Fedora and also apply any patches to the system: [email protected]:[~]#cat /etc/redhat-release Fedora release 23 (Twenty Three) [email protected]:[~]#dnf update -y After this we will refresh the system: [email protected]:[~]# dnf upgrade --refresh RPM Fusion for Fedora 23 - Free - Updates 13 kB/s | 1.3 kB 00:00 RPM Fusion for Fedora 23 - Nonfree - Updates 11 kB/s | 1.3 kB 00:00 Open source multiplatform video transcoder 239 kB/... read more »


Installing and configuring CSF on CentOS 7.

I have been using CSF (ConfigServer Security and Firewall) in my Linux systems for a while now with great results. CSF is more than a Firewall software, it is also an SPI (Stateful Packet Inspection), LID (Login/Intrusion Detection), and an Application Security software. But the best part of CSF is not how powerful and reliable it is but how easy is to install, configure and use. In this post, I will show how to install and do some basic configuration of CSF on CentOS 7. Disable default Firewall The first step will be to disable firewalld on your system. To do this: [[email protected] ~]# systemctl... read more »


Fedora 24 released!

Fedora 24 was released on June 20, 2016. To download the different editions of Fedora 24, please visit the Fedora Project site. For the Workstation, Cloud, and Server editions: Fedora 24 Workstation Fedora 24 Cloud Fedora 24 Server For the other releases like Spins, Labs, and ARM: Fedora 24 Spins Fedora 24 Labs Fedora 24 ARM You could read the full release notes for this Fedora release here.... read more »