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How to install KVM and libvirt on CentOS 6.2 with bridged networking
This is a how to install the KVM hypervisor and libvirt virtualization library on Linux CentOS 6.2. At the end of this guide you will have a CentOS box (name it host) with the following...
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Creating a new Oracle 11g R2 Database on CentOS 6.2
Once you installed an Oracle 11g R2 Database Server on CentOS 6.2 the next step is to create a new empty and fresh database for your own use. You must have a running listener before creating a...
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Configuring a network listener for Oracle on CentOS 6.2
You require to configure and run a network listener before creating a database with the Oracle's Database Configuration Assistant (dbca) tool. This is a how to configure such a listener.I assume you...
View ArticleBooting Oracle 11g R2 Database Server on CentOS 6.2
This is a how to autostart the Oracle 11g R2 Database Server on CentOS 6.2. I assume you have done the following:Install an Oracle-ready CentOS 6.2 Linux boxInstall the Oracle 11g R2 Database Server on...
View ArticleWhat are the size of Ubuntu and Debian repositories?
Before mirroring a complete Ubuntu / Debian repository on your hard drive, you want for sure have an estimation of the "weight" of all packages.This script computes the total size of various...
View ArticleWhat is the size of CentOS repository?
How do we know the size of CentOS repository before download it all? I'm sure there are many ways to do that by using yum / yast2 or other tool.I'll try to achieve the same using "simple" commands...
View ArticleThe Parking Permit Demo (5)
Here I let you the episodes #7 - #10 of The Parking Permit Demo with Oracle BPM/SOA suite.pp-07_Defining_Schema_Type_n_Element_for_ParkingPermitReplyDefining XSD complexType & element for replies...
View ArticleInstalling NFS on CentOS 6.2
This is a how to install the NFS service on a Linux CentOS 6.2 box and making it accessible to others. The scenario is the following:Grant read-only access to the /home/public directory to all...
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A WSDL-first asynchronous JAX-WS webservice. Correlating the messages using...
This how to is a WSDL-first (top-down) example of implementing a pure JAX-WS asynchronous web service with the following features: the service, named JobProcessor is designed top-down, starting from...
View ArticleMatching IP address on Bash
I use bash very often, this is a tip on how to match an IPv4 address and address list using bash. It makes use of the Bash's matching operator ~=. Enjoy it!
View ArticleRAM-only PXE boot & the "smallest" diskless Linux box
This is a how to easily create a very small Linux box purely running on RAM memory that boots using PXE. This is an introductory topic (not new at all), for further posts about scalability, load...
View ArticleThe Parking Permit Demo. README and Sources for Season 01
Here I let you the README and Sources for the Season 01 of The Parking Permit Demo with Oracle BPM/SOA suite. The README. The Sources for Season 01 Enjoy it!
View ArticleThe NGINX's RAM-only Jail. Adding nginx to RAM-only diskless Linux box
Without any doubt, nginx is one of the best ever created HTTP servers, it solves the C10K problem with an elegant event-drive architecture. Many big sites around the WWW use it: Wikipedia, Hyves,...
View ArticleBuilding and packaging the latest Gearman server in CentOS 6.2
This is a how to package, install and test the latest version of Gearman server in RPM format using CentOS 6.2. MotivationThe latest version available of Gearman in the Fedora repository is very...
View ArticlePackaging Csync2 in RPM on CentOS 6.X
This is a how to package in RPM format, the Csync2 synchronization tool on CentOS 6.x.StepsAppend RPM Forge repository by creating the file /etc/yum.repos.d/rpmforge.repo with the following content:$...
View ArticleRunning webtoolkit application as nginx FastCGI on CentOS 6.x
Wt (pronounced as witty) is a powerful C++ library for developing web applications. Witty-based apps can be integrated as FastCGI with nginx and other web servers. This guide is about the integration...
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A TDD approach using Spring Framework + Mockito + Lombok
IntroThis is simple Hello World Java application that successfully combines Spring Framework with Mockito and Lombok. It's just for demonstrative purposes, so the presented example is very simple and...
View ArticleBecoming unaware of the Dependency Injection Framework. Encouraging...
IntroThe previous post showed up how to combine Spring Framework, Mockito and Lombok in TDD fashion. But it's far from be the simplest and portable solution if such thing even exists. Let's try to make...
View ArticleRecording dialog-based interactive user input using expect on Linux
This is a how to successfully combine the shell script dialog tool with expect in order to record all user interactions and repeat them later. You can apply expect to record almost anything on a...
View ArticleImageMagick convert to raw RGB format in C++
This is a code snippet to convert from any supported ImageMagick format to raw RGB format, it's just an example on how to use the conversion features of ImageMagick libraries. The example was tested on...
View ArticleCreating a REST web service using webtoolkit (aka witty)
I previously introduced witty as a powerful web framework for C++ developers, mostly those one that don't want to re-invent the wheel and become productive. Witty uses a resource-based approach to...
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Spring CDI Mocks: Separating Unit Tests and Integration Tests. The right...
P { margin-bottom: 0.08in; }A:link { }INTROIn the last post I clearly became more independently of Spring, not because I hate him, in fact I like Spring a lot. But to postpone the choice of the...
View ArticleHow to install collectd & graphite on Ubuntu and CentOS
This post is a direct approach to install collectd & graphite on Ubuntu, by direct I mean using the available repositories:Requeriments- Ubuntu 13.10 installed and configured with standard...
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JAngular launchedThis is set of matchers for TDD practicing developers using AngularJS + UI-Router. JAngular
View ArticleSpring Sandbox Welcome
Spring Sandbox WelcomeJust a set of examples of the state-of-the-art Spring ecosystem. Mostly Spring Boot and Spring Platform IO.Check it out @ https://github.com/eduardo-lago-aguilar/spring-sandbox
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