Enabling LDAP Security for DataGrid Cache

Expanding on Tristan’s blog, where he spoke of enabling security for JBoss Data Grid caches, in this post we will cover how to add LDAP based security to the JDG caches. The principles and techniques remain defined by Tristan, but there are some minor changes that I will be highlighting in this blog for a successful working configuration of JDG enabled with LDAP security.

Continue reading “Enabling LDAP Security for DataGrid Cache”


Join Red Hat Developers, a developer program for you to learn, share, and code faster – and get access to Red Hat software for your development.  The developer program and software are both free!

 

Develop and Deploy on OpenShift Next-Gen using Red Hat JBoss Developer Studio

The OpenShift Next-Gen platform is available for evaluation: visit https://console.preview.openshift.com/. It is based on Red Hat OpenShift Container Platform 3.4. This preview allows you to play with OpenShift Container Platform 3.4 and deploy artifacts. The evaluation is limited to one month. The purpose of the article is to describe how to use Red Hat JBoss Developer Studio or JBoss Tools together with this online platform.

Continue reading “Develop and Deploy on OpenShift Next-Gen using Red Hat JBoss Developer Studio”


Join Red Hat Developers, a developer program for you to learn, share, and code faster – and get access to Red Hat software for your development.  The developer program and software are both free!

 


For more information about Red Hat OpenShift and other related topics, visit: OpenShift, OpenShift Online.

OpenJDK and Containers

What can be done to help the OpenJDK JVM play well in the world of Linux Containers?
I thought I’d start tackling this issue by answering some frequently asked questions:

Why is it when I specify -Xmx=1g my JVM uses up more memory than 1gb of memory?

Specifying -Xmx=1g is telling the JVM to allocate a 1gb heap. It’s not telling the JVM to limit its entire memory usage to 1gb. There are card tables, code caches, and all sorts of other off heap data structures. The parameter you use to specify total memory usage is -XX:MaxRAM. Be aware that with -XX:MaxRam=500m your heap will be approximately 250mb.

Continue reading “OpenJDK and Containers”


Join Red Hat Developers, a developer program for you to learn, share, and code faster – and get access to Red Hat software for your development.  The developer program and software are both free!

 

Red Hat Summit 2017 – Planning your AppDev & DevOps labs

This year in Boston, MA you can attend the Red Hat Summit 2017, the event to get your updates on open source technologies and meet with all the experts you follow throughout the year.

It’s taking place from May 2-4 and is full of interesting sessions, keynotes, and labs.

Continue reading “Red Hat Summit 2017 – Planning your AppDev & DevOps labs”


Join Red Hat Developers, a developer program for you to learn, share, and code faster – and get access to Red Hat software for your development.  The developer program and software are both free!

 


For more information about Red Hat OpenShift and other related topics, visit: OpenShift, OpenShift Online.

Offload your database data into an in-memory data grid for fast processing made easy

An in-memory data grid is a distributed data management platform for application data that:

  • Uses memory (RAM) to store information for very fast, low-latency response time, and very high throughput.
  • Keeps copies of that information synchronized across multiple servers for continuous availability, information reliability, and linear scalability.
  • Can be used as distributed cache, NoSQL database, event broker, compute grid, and Apache Spark data store.

The technical advantages of an in-memory data grid (IMDGs) provide business benefits in the form of faster decision-making, greater productivity, and improved customer engagement and experience.

Continue reading “Offload your database data into an in-memory data grid for fast processing made easy”


Join Red Hat Developers, a developer program for you to learn, share, and code faster – and get access to Red Hat software for your development.  The developer program and software are both free!

 

Apache Ant – quick start

Apache Ant should be familiar to every Java programmer: this is a popular software build tool, completely written in Java. Ant uses a build script, which is a simple XML file. Despite its being Java-oriented, web developers also use this tool.

Continue reading “Apache Ant – quick start”


Join Red Hat Developers, a developer program for you to learn, share, and code faster – and get access to Red Hat software for your development.  The developer program and software are both free!

 

JBoss participates in Google Summer of Code 2017

Google Summer of Code (GSoC), for those who are not familiar, is an initiative led by Google to encourage students to participate in Open Source projects during their summer break. Projects like JBoss Community, Eclipse Vert.X or Fedora apply to be a mentoring organization and if selected by Google, are paired with students with whom they will mentor. Selected and successful students will receive a stipend from Google for their participation.

The JBoss community has been participating in GSoC for the past several years, with outstanding success, and I am happy to announce that the JBoss community has once again been selected as a mentoring organization for GSoC 2017. I have written about last year’s results in the past.

We have posted a list of ideas for proposals for students, but students are also encouraged to submit their own ideas.

Continue reading “JBoss participates in Google Summer of Code 2017”


Join Red Hat Developers, a developer program for you to learn, share, and code faster – and get access to Red Hat software for your development.  The developer program and software are both free!

 

Java inside docker: What you must know to not FAIL

Many developers are (or should be) aware that Java processes running inside Linux containers (docker, rkt, runC, lxcfs, etc) don’t behave as expected when we let the JVM ergonomics set the default values for the garbage collector, heap size, and runtime compiler. When we execute a Java application without any tuning parameter like “java -jar mypplication-fat.jar”, the JVM will adjust by itself several parameters to have the best performance in the execution environment.

This blog post takes a straightforward approach to show developers what they should know when packaging their Java applications inside Linux containers.

Continue reading “Java inside docker: What you must know to not FAIL”


Join Red Hat Developers, a developer program for you to learn, share, and code faster – and get access to Red Hat software for your development.  The developer program and software are both free!

 

Getting started with OpenShift Java S2I

Introduction

The OpenShift Java S2I image, which allows you to automatically build and deploy your Java microservices, has just been released and is now publicly available. This article describes how to get started with the Java S2I container image, but first, let’s discuss why having a Java S2I image is so important.

Continue reading “Getting started with OpenShift Java S2I”


Join Red Hat Developers, a developer program for you to learn, share, and code faster – and get access to Red Hat software for your development.  The developer program and software are both free!

 


For more information about Red Hat OpenShift and other related topics, visit: OpenShift, OpenShift Online.

Microservices: Zero Downtime Deployment; Hot reconfiguration on OpenShift

2017: Time for a new resolution and the most important resolution for this year should be to adopt microservices to spend less effort on development and improve your time to market (TTM). Nowadays, there are plenty of tools and frameworks at the disposal of the discerning developer to rapidly build microservices. A few examples include Spring Boot, Vertx, etc.

Continue reading “Microservices: Zero Downtime Deployment; Hot reconfiguration on OpenShift”


Join Red Hat Developers, a developer program for you to learn, share, and code faster – and get access to Red Hat software for your development.  The developer program and software are both free!

 


Download and learn more about Red Hat JBoss Fuse, an innovative modular, cloud-ready architecture, powerful management and automation, and world class developer productivity. It is Java™ EE 7 certified and features powerful, enterprise-grade features such as high availability clustering, distributed caching, messaging, transactions, and a full web services stack.


For more information about Red Hat OpenShift and other related topics, visit: OpenShift, OpenShift Online.