DevOps

As far as automated configuration management tools go, Ansible is “the new hotness” on the market. I admit, I am pretty new to Ansible. Until recently, the majority of my configuration management experience has been rooted solely in Puppet. Tack onto that my recent foray back into the world of Red Hat and I have a lot to learn, starting with getting Ansible installed and running on RHEL. There are two ways to install Ansible—via yum, or directly from source...

This year’s middleware keynote address at Red Hat Summit talked about microservices, the power of the pipeline, and how developers and devops can work together to release code to production at a much higher rate. The keynote also demonstrated how releases can be shipped so you can switch from the existing deployment to a new deployment (blue/green deployments), and demonstrated how to roll out a canary deployment to a subset of users to test out new features. (If the canary...

In a previous post, where-have-all-my-subscriptions-gone, I mentioned that you can access the Red Hat Content Delivery Network (CDN) using its API --- allowing you to query CDN for subscriptions and their usage, registered hosts, and more as well as unregistering hosts, and more. I wanted to do some analysis for my own subscription usage, so I wrote some scripts that let me more easily tell where my subscriptions are being used. Since Python scripting is still fairly new to me...

https://www.youtube.com/watch?v=o9EoWqiKLik It's amazing how you can have the feeling of being home when you arrive at some special places: people you love, food you love, and the warming sensation of being welcome. Without any doubt we from Red Hat Developers can assure that TDC São Paulo, with this amazing developer community, feels like home. From July 5th to July 9th we had the companion of more than 4800 developers at Anhembi Morumbi University, venue of the The Developer's Conference (TDC)...

Microservices are standing at the " Peak of Inflated Expectations". It's immeasurable the number of developers and companies that want to bring in this new development paradigm and don't know what challenges they will face. Of course, the challenges and the reality of an Enterprise company that has been producing software for the last 10 or 20 years is totally different from the start-up company that just released its first software some months ago. Before adopting microservices as an architectural...

If you are using JBoss Enterprise Application Platform (EAP) for J2EE development, the CloudBees Jenkins Platform provides an enterprise-class toolchain for an automated CI/CD from development to production. The CloudBees Jenkins Platform now supports integrations with both Red Hat JBoss Enterprise Application Platform (EAP) and Red Hat OpenShift across the software delivery pipeline. This enables developers to build, test and deploy applications, with Jenkins-based continuous delivery pipelines in JBoss via JBoss EAP 7 or JBoss EAP 7 on OpenShift. The...

JBoss EAP 7 was recently released, and brings with it a whole host of new features and support, such as support for Java EE 7, reduced port usage, graceful shutdown, improved GUI and CLI management, optimizations for cloud and containers, and much more. EAP 7's small footprint, fast startup time and support for modern Java and non-Java frameworks make it uniquely suitable for deployment onto PaaS cloud environments, and Red Hat happens to have a leading one: OpenShift. I put...

One of the core drivers behind modern application architecture, development and delivery methodologies like micro-services, agile and CI/CD is the ability to automatically test any software artifact, from application code to server configuration. Automated testing gives us the reliable, repeatable, assurance that our software meets the required quality with respect to aspects like functionality, performance, and scalability and is ready to be deployed in production. Why should testing of a business-process defined in BPMN2, a deployable software artifact, be any...

Following my introduction blog about why microservices should be event-driven, I’d like to take another few steps and blog about it. (Hopefully I saw you at jBCNconf and Red Hat Summit in San Francisco, where I spoke about some of these topics). Follow me on twitter @christianposta for updates on this project. In this article we discuss the first parts of carving up a monolith. The monolith I’m exploring in depth for these articles will be from the Ticket Monster...

Over the years, I've come across many command line interfaces ( CLI) to larger applications, each with varying levels of access and power. Having a CLI at all is a great first step for an application, as it opens up a much wider range of possibilities: administration, extension, and trust. CLIs also promote scriptability - the ability to create and maintain repeatable scripts, and the easier it is to develop said scripts, the better. Sometimes scripts can solve issues that...

I'm sure you have heard and read a lot about microservices in the recent past and how they are here to defend our end users from the horrible monolith. Breaking an application up into many components is a great start, but to take your organization to the next level requires a platform focused on integrating microservices into your continuous improvement process. Red Hat's James Rawlings & James Strachan led us through achieving our new goal of continuous delivery with containerized...

WildFly Swarm 1.0.0.Final was released this week at DevNation. It allows the developer to package his application and a JavaEE runtime in a "fat- jar" file. To execute the application, the developer will only need a Java SE Runtime installed and have access to the "fat-jar". No other downloads or configurations are needed. Besides being a well known (and consolidated) Java EE runtime, WildFly Swarm is also an excellent choice for Cloud-native Java apps through the "built-in support for third...

The Problem Several months back, our emerging Developer Programs engineering team assembled during the last breaths of Brno's Czech winter and dedicated a full day towards a deceptively complex task: Be a user. Assemble in groups and, using a technology stack of your choosing, conceive of and create an application to be presented to the full team in 6 hours. Keep in mind that I hold my colleagues in extremely high regard; they're capable, creative, and experienced. Surely churning out...

"Linux containers (sometimes managed using the docker command) keep applications and their runtime components together by combining lightweight application isolation with an image-based deployment method". ( https://developers.redhat.com/topics/kubernetes ) Red Hat Developer program brings a very useful cheat sheet to those who need to create or work with containers, images, volumes and networks. When you download the sheet, you will find: An illustrated cheat sheet with commands related to the management of containers, Dockerfile instructions to craft your own image, and...

This morning at DevNation we talked about the past and the future. A past that helped create some of the fundamental building blocks of application development and a future where we can reimagine them all. As part of the open source community, Red Hat has worked with countless individuals and organizations over the past 20+ years to solve some of the biggest problems and provide technology that many businesses rely on today. It was great to have so many of...

The Great India Developers Summit is quickly approaching and we are looking forward to landing in India to participate in this exciting event. This year we are focused on making DevOps work for you. DevOps isn’t a one size fits all. It depends on your organization, the culture and the technology you use to help you in your DevOps methodology. Stop by the booth and learn more about how DevOps can help you and while you are there sign up...

As a developer, certifications offer a unique opportunity to increase your personal marketability - they are a tangible indication of your subject matter expertise. Not only can the necessary preparation provide an opportunity to learn new material, but having a way (the certification exam) to verify you've actually learned the core skills can be a valuable tool to ensure you're "doing and learning the right things". There is constant debate about the utility of certifications within some IT circles, but...

Jenkins is great, and it has done a lot to make our lives easier. It seems like not so long ago when the idea of continuous integration tools was a daunting task. Jenkins came to the rescue, and I (and many others) use it a lot... A LOT. Given that my day to day work is in consulting, I'm constantly working in different development environments with different technologies - and a common thread among all those environments is Jenkins. It...

We had the great pleasure of attending Devoxx Belgium in the Fall and are planning our return to Europe for Devoxx France. We’ve been working with our colleagues in France to make sure we have a great booth, awesome swag and more. Not only can you learn more at the booth but we have a ton of presentations spread across the conference, labs and tools-in-action that we are looking forward to sharing. Check out the sessions. Conference: The State of...

In today's fast paced world of business, delivering quickly is a top priority. Doing so is difficult, however, if you lack confidence in your codebase or rely on error prone deployment processes. Continuous integration enables development teams to automatically run test cases prior to merging code into a stable branch, while continuous deployment leverages automation to provide more reliable, faster deployments of that code. Red Hat Mobile Application Platform supports an agile approach to developing, integrating, and deploying enterprise mobile...

Last week, the seventh edition of QCon São Paulo made a strong repeat performance with over 800 attendees and over 100 speakers. Enterprise Java, Microservices, DevOps, CI/CD, Big Data, User Experience, and the Internet of Things (IoT) were focal points of the conference, along with dozens of other topics from which attendees could choose. Several Red Hat speakers gave presentations, including: Eder Ignatowicz - Java/JVM - about how OO Design Patterns had changed with Functional Programming: " Refactoring to Patterns...

A recent blog post, 10 things to avoid in docker containers , describes ten scenarios you should avoid when dealing with docker containers. However, recommendation # 3 - Don’t create large images and the sentence "Don’t install unnecessary packages or run “updates” ( yum update) that download files to a new image layer" has generated quite a few questions. Some of you are wondering how a simple yum update can create a large image. In an attempt to clarify the...

So you finally surrendered to containers and discovered that they solve a lot of problems and have a lot of advantages: First: Containers are immutable - The OS, library versions, configurations, folders, and application are all wrapped inside the container. You guarantee that the same image that was tested in QA will reach the production environment with the same behaviour. Second: Containers are lightweight - The memory footprint of a container is small. Instead of hundreds or thousands of MBs...

Docker has become the de facto standard for defining and running containers in the Linux® operating system. Kubernetes is Red Hat's choice for container orchestration. OpenShift, built upon Docker, Kubernetes, and other open source software projects, provides Platform-as-a-Service (PaaS) for the ultimate in deploying applications within containers. Learn how to deploy applications in containers using Docker, Kubernetes, and OpenShift Enterprise by Red Hat®. Deploying Containerized Applications Technical Overview (DO080) is Red Hat's new, no-cost, video course that will teach you...

SD Times talks with Red Hat's Markus Eisele and Burr Sutter about DevOps and company culture. Worth a read if you're interested in "on how enterprise DevOps can best gain traction." First SD Times question: ...what is the most common mistake in trying to achieve DevOps?" Read the article: http://sdtimes.com/powerful-force-devops-changing-companys-culture/