Categories
00 - Hybrid Cloud Infrastructure

First Steps with OpenShift Virtualization

It is 2020 and everybody is talking more and more about containers. A topic that came up around 2013 with Docker making an ecosystem for developers using containers for faster development cycles. But although the container hype is growing there are still lots of VMs out there, that may also have their right to exist. […]

Categories
00 - Cloud-Native App Dev

How to pimp your Quarkus application to benefit from Kubernetes

In my last post I promised to introduce you to a selected set of Quarkus extensions. Today I will cover three of those. In my opinion they make total sense in the context of a container development or just container runtime platform (such as Red Hat OpenShift or any other Kubernetes distribution). The effort : […]

Categories
00 - Industry

Optimizing retail sales using OpenShift

Retailers who operate facilities, both physical stores and online stores want to constantly optimize the shopping experience of their customers. Why? Because an easy and pleasant experience increases sales. Simple as that. So shopping experience need to be permanently changed for the better. But does really every change lead to increased sales? How can this […]

Categories
00 - Hybrid Cloud Infrastructure

How to install NVIDIA GPU Operator in OpenShift 4

The NVIDIA GPU Operator is used to manage GPU nodes in OpenShift and make these GPUs consumable for application workloads in an OpenShift cluster. There are several use cases which fit e.g, AI/ML workloads, data analysis, 3D processing. All of these can be done within an OpenShift cluster with GPU power enabled. So, today I […]

Categories
agile api Auto-Scaling cdk Containers demo Integration JBoss Fuse Kubernetes monitoring open source OpenShift PaaS

Monitoring Camel with Prometheus in Red Hat OpenShift

This walk-through example will encourage you to build an Apache Camel application from scratch, deploy it in a Kubernetes environment, gather metrics using Prometheus and display them in Grafana. Monitoring will automatically adjust when the system scales up or down. Table of Contents Introduction About Prometheus To-Do overview Scraping data The application Enabling Prometheus Enabling […]

Categories
OpenShift

Release Management with OpenShift: Under the hood

If you think about Release Management with OpenShift, you’re automatically thinking about Jenkins. With Jenkins you can easily setup a Release Pipeline for your App(s) and Jenkins is tightly integrated into OpenShift. There are a lot of Demos out there which are describing the best practices of using it. And OpenShift becomes more and more […]

Categories
OpenShift

Installing Gogs Git Server on OpenShift and make it using WebHooks to trigger builds

Preparation Based on the following github.com project, we are going to set up a Gogs Git-Server on our local OpenShift Environment, which we have set up here: http://www.opensourcerers.org/setting-enterprise-openshift-3-5-platform-macos-virtualbox/ https://github.com/OpenShiftDemos/gogs-openshift-docker As we want to reuse our Gogs Server for some situations, we need to use the persistent version of the Template. First of all we need […]

Categories
Containers Kubernetes Networking OpenShift Uncategorized

OPENSHIFT NETWORKING FROM A CONTAINER/WORKLOAD POINT OF VIEW – PART 6: CONTROLLING EGRESS TRAFFIC

OpenShift 3.3 and later contain the functionality to route pod traffic to the external world via a well-defined IP address. This is useful for example if your external services are protected using a firewall and you do not want to open the firewall to all cluster nodes. The way it works is that a egress […]

Categories
Containers Kubernetes Networking OpenShift Uncategorized

OPENSHIFT NETWORKING FROM A CONTAINER/WORKLOAD POINT OF VIEW – PART 5: OPENSHIFT ROUTER

In the OpenShift world, Services take place on the OSI Layer 3 / IP, while Routing is an OSI Layer 7 / HTTP/TLS concept. Once you’ve wrapped your head around this backwards choice of naming, things are fairly easy: An OpenShift Router is a component which listens on a physical host’s HTTP/S ports for incoming […]

Categories
Cloud Containers OpenShift Technology

OPENSHIFT NETWORKING FROM A CONTAINER/WORKLOAD POINT OF VIEW – PART 4: CONTAINER NETWORKING USING OPENSHIFT/KUBERNETES SERVICES

To allow stable endpoints in an environment of ever changing starting and stopping Pods (and therefore constantly changing IP addresses), Kubernetes introduces (and OpenShift uses) the concept of services. Services are stable IP addresses (taken per default from the 172.30.0.0/16 subnet) that remain the same as long as the service exists. Connection requests to a […]