Red Hat Satellite 6 reporting engine - System currency report
This post describe how generate the “System currency” report in Red Hat Satellite 6. System currency report is a report existing in Satellite 5 but it isn’t ...
Recent Posts
Use GitHub Actions to create Jekyll post from GitHub issue
This post describe a GitHub Actions workflow that allow to create new post on a Jekyll web site contained in a GitHub repository using the issue editor of Gi...
Distributed SQL Query using SparkSQL, HDFS and Sqoop
Spark SQL: A brief introduction
Apache Spark – Distributed computation of π in 8 lines of Python code
In this post I show how to write a distributed application computing an approximation of pi number though a Spark application using Python.
Import Mysql data in Elasticsearch server
Elasticsearch is a near real-time search server based on Lucene. It allows to create a distributed full-text search engine. It’s an opensource software devel...
Flume: Import apache logs in hadoop hdfs
Flume is a project of the Apache Software Foundation used to import stream of data to a centralized data store. In hadoop environments Flume is used to impor...
HA two node GPFS cluster with tie-breaker disk
In a previous post I described how configure a GPFS cluster filesystem ( a filesystem that can be mounted by two or more servers simultaneously ). This artic...
Install Cloudera prerequisites with Ansible
Ansible is an opensource software for configuring and managing a server infrastructures. It allows multi-node software deployment, ad hoc task execution and ...
Install and configure GPFS 4.1 filesystem on Linux Centos 6.6
The General Parallel File System (GPFS) is a high-performance clustered file system developed by IBM. It can be deployed in shared-disk infrastructure or in ...
HAProxy basic configuration on Ubuntu 14.04
HAProxy is a free, very fast and reliable solution offering high availability, load balancing, and proxying for TCP and HTTP-based applications. It is partic...
Python unit testing introduction
The python standard library includes the library unitest from python’s version 2.1 .
Python lambda functions
Python allows to define anonymous functions (i.e. function not bounded to a name). You can easily identify this functions’ type because are defined using the...
Clone git repo to a non-empty directory
Cloning a git repo to a non-empty directory can be sometimes useful.