In this article I am going to show you how to attach a debugger and a VisualVM profiler to the Java application running on OpenShift. The approach described here doesn’t make use of the Jolokia bridge. Instead, we are going to leverage the port-forwarding feature of OpenShift.
Are you still coding your API client libraries by hand? Is your manually maintained API documentation drifting away from what was actually implemented? You may be interested in reviewing the two popular technologies that solve this problem. In this article, we are going to look at OpenAPI and gRPC side-by-side.
Recently I passed the Red Hat Certified Specialist in Gluster Storage Administration exam. In this blog post, I would like to share some of my experience and exam tips with you.
On September 21, 2018 I spoke at the Red Hat Training Partner & Instructor Conference in Prague, Czech Republic. Why was I invited, and what did I learn? Read on if you want to find out.
Over the course of the last year I was working towards transitioning our company’s products to the AWS cloud. I gained a solid experience with many of the AWS services, wrote lots of lines of CloudFormation code, and embraced AWS reference architectures and best practices. To round up my AWS experience I thought that accomplishing some certifications would be a good idea. In this post, I am going to share with you how I achieved the AWS associate certifications.
Ansible is a popular IT automation tool. In this article, I would like to share with you some of the useful practices we have discovered while using Ansible over the past four years.
Last week, I had the pleasure of attending Red Hat Summit 2018. It was hosted at the Moscone Center in San Francisco, May 8-10, 2018. I greatly enjoyed this conference and would like to share with you some of the interesting things I learned there.
Code reuse belongs to the basic tenets of software development. Moreover, one should have the same principle in mind when maintaining build scripts. If you are copy-pasting Makefiles and pom.xml files from project to project, stop now and read this article! We are going to discuss how to design a common build system.
Amazon Linux 2 runs on OpenStack perfectly fine. There is only one glitch that you should be aware of. Amazon Linux 2 won’t accept metadata and user data provided by OpenStack on boot. That means that you won’t be able to SSH into the instance after it comes up. In this brief tutorial, we are going to modify the Amazon Linux 2 image to fix this problem.
In the previous post, we discussed our experience with the deployment of OpenStack. In this article, we’re going to share the lessons learned when operating it. It took effort to tame the OpenStack beast and make it work reliably. If you want to know how we accomplished that, read on.