OpenShift 4: Libvirt UPI installation.
Hello everyone, just a couple of month ago, Red Hat has released a shiny OpenShift 4 [1] based on CoreOS technology. In this guide, we going to see how we can install OCP4 UPI...
Category: OpenShift
DevSecOps with OpenShift – Image Signing
INTRODUCTION Just like an RPM signing, container image singing can be used to verify authenticity of a container image created by users/developers throughout image life-cycle. The concept of verification are similar to RPM gpgcheck...
Enforcing modern and strong OCP TLS & Cipher Suites
Introduction Enforcing strong and modern cipher is critical to ensure our deployment are well protected from old and weak cipher. Enforcing only strong and modern cipher will significantly reduced or not too bold to...
How to Label a Namespace in Openshift or Kubernetes
Labeling an object in OpenShift or Kubernetes is an awesome method to organize, group, or select API objects. Labels can be used to group arbitrarily-related objects; for example, all of the object like pods,...
How to delete a pod with Terminating state in OpenShift or Kubernetes Cluster
There might be situations where you have already deleted pods (or already removed dc aka deployment configuration) but pods are stuck in Terminating state. There are few suggestions if you google around (Red Hat...
Ansible and Jenkins integration – Red Hat Webinar
Join this Red Hat webinar to see how to use Jenkins pipelines to deploy simple applications using Ansible Tower. Here see the quick overview of agenda. Configure and create a new Ansible Tower project....
How to Fix a Failed PV in OpenShift Cluster
There are several cases a PV (PersistentVolume) appear as Failed in OpenShift or Kubernetes cluster. Once of the reason is wrong ClaimRef by which PV will mark as claimed but actually not in use....
OpenShift Cluster – How to Drain or Evacuate a Node for Maintenance
As we know OpenShift clusters are bundled with multiple compute nodes, master nodes, infra nodes etc, it’s not a big deal to manage node maintenance for OS patching kind of activities. But we need...
OpenShift Container Platform 3.11 Installation Documents
Since OCP 3.11 is available now, you may refer below documents for OpenShift Container Platform 3.11 Installation on different infrastructure or platforms. Those are very quick documents but already included all details including installation...
How to Create, Increase or Decrease Project Quota in OpenShift
Usually application owner or project owner will specify the quota settings (Memory and CPU) during project creation. But sometimes, they realize that the requested resource is not enough to run their applications. Usually we...
