Ales Nosek - The Software Practitioner

Helping you navigate the world of Kubernetes.

Git — Getting the Timing Right

Do you work on a development team that is distributed across several time zones? Got confused by the dates that Git shows in the commit logs? In this blog post we’re going to review some basics about how Git deals with time.

Controlling a Multi-Service Application with systemd

Is your application delivered as a set of services running on top of Linux? Did you think about writing a custom controller service that would start your application services in the correct order and monitor their health? Please, stop thinking about it! In this blog post I would like to convince you that you can leverage the existing systemd service manager to control your application services to your greatest benefit.

RHCSA/RHCE Exam Experience

Today was the great day when I passed the RHCE certification exam. If you’re thinking about getting a Linux certification or you’re already working towards RHCSA/RHCE, this blog post is for you.

First Impressions about ansible-container

At Red Hat summit I learned about the new project ansible-container. I was very excited and looked forward to building Docker containers with Ansible instead of the Dockerfiles. The project seemed to came just on time as in our company we’re starting to Dockerize our software products. How did ansible-container work out for us? Read on!

What I learned from The Open Organization

Red Hat is one of the most successful software companies that makes billions of dollars selling open source software. The book The Open Organization written by Jim Whitehurst, CEO of Red Hat, provides a great insight into the company culture and how things get done at Red Hat. This blogpost lists some of the ideas I learned from this book.

Deploying Kubernetes on OpenStack using Heat

Update 6/19/2018: The openstack-heat kube-up provider used in this tutorial was removed in Kubernetes version 1.10. If you want to install Kubernetes 1.10 or later on OpenStack, this tutorial won’t help you.

Want to install Kubernetes on top of OpenStack? There are many ways how to install a Kubernetes cluster. The upcoming Kubernetes 1.3 release comes with yet another method called OpenStack Heat. In this article, we’re going to explore this deployment method when creating a minimum Kubernetes cluster on top of OpenStack.

Test-Driving OpenStack Manila

Do you need to provision an NFS share for your Hadoop cluster? And what about creating a CIFS share to make your files accesible to the Windows clients? Manila is a provisioning and management service for shared file systems within OpenStack. Let’s test-drive it in this blogpost.

TripleO Installer — The Good, the Bad and the Ugly

TripleO is an OpenStack deployment and management tool I’ve been using since the Kilo release of OpenStack. It does its job pretty well, however not everything is perfect. My experience presented in this article applies more or less to the Red Hat’s OpenStack director too, as the Red Hat OpenStack director is a downstream version of TripleO.