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Hybrid cloud blog

August 20, 2021

Initiating Ansible Automation on Policy Violations

Overview With the release of Red Hat Advanced Cluster Management for Kubernetes (RHACM) version 2.3, Ansible integration is supported in the governance lifecycle of the product. This feature provides ...

Matt Prahl

August 3, 2021

Register Now for AnsibleFest 2021

  AnsibleFest is taking place on September 29-30, online. And the best part about it is that it's 100% free! You can register here, right now. Learn how Ansible can help automate your IT tasks and ...

Alex Handy

July 26, 2021

Improving the Resource Efficiency for OpenShift Clusters Via Trimaran Schedulers

Challenges of Resource Management In OpenShift, as a developer, you can optionally specify how much of each resource (CPU, memory and others) a container needs via setting the request and the ...

Asser Tantawi and Chen Wang

May 18, 2021

Image Garbage Collection in OpenShift

The image garbage collector is one of two mechanisms present in every kubernetes cluster node trying to maintain enough available space in the local disks for normal operations to continue. The other ...

Jose Jerez

May 12, 2021

OCP Disaster Recovery Part 1 - How to Create Automated ETCD Backup in OpenShift 4.x

This article is focused on guiding the creation of automatic backups for ETCD in OCP 4.x clusters. This activity is of paramount importance for a successful disaster recovery. You may be curious how ...

Zanoni Maciel

February 23, 2021

How Full Is My Cluster, Part 6: Proactive Node Autoscaling

Introduction At the conclusion of the previous post (part 5) in this series (part 1, part 2, part 3, and part 4), we presented a dashboard for making “manual” capacity management decisions. We ...

Raffaele Spazzoli

February 22, 2021

Topology Awareness in Kubernetes Part 2: Don’t we already have a Topology Manager?

This post was written by: Swati Sehgal, Alexey Perevalov, Killian Muldoon & Francesco Romani At the node level, resource alignment is handled by Topology Manager, a native part of Kubelet. By ...

Topology-aware Scheduling Working Group

February 18, 2021

Topology Aware Scheduling in Kubernetes Part 1: The High Level Business Case

This post was written by: Swati Sehgal, Alexey Perevalov, Killian Muldoon & Francesco Romani How do you get the most out of your bare-metal hardware? Believe it or not, the physical layout in a ...

Topology-aware Scheduling Working Group

December 22, 2020

How does Compliance Operator work for OpenShift? (Part 2)

Introduction to the Compliance Operator In part one of this series, we looked at the difference between the Compliance Operator, Red Hat Advanced Cluster Management for Kubernetes (RHACM), and Open ...

Naoya Hashimoto

December 9, 2020

Automate Your Security Practices and Policies on OpenShift With Open Policy Agent

This blog post aims to explain Open Policy Agent (OPA) basics and how the Red Hat Containers Community of Practice (CoP) has started to implement a collection of policies using the toolset. As a ...

Gareth Healy

December 4, 2020

Automating Volume Expansion Management - an Operator-based Approach

Introduction In a prior blog post, we illustrated some best practices on which metrics to use when monitoring applications. We used the same metrics to construct dashboards and predict when something ...

Raffaele Spazzoli

November 30, 2020

Augmenting OpenShift CLI with Plugins

Red Hat OpenShift Container Platform provides a feature-rich CLI based on the kubectl command. The CLI is invoked via the oc command. The OpenShift CLI (oc) is mainly used to interact with the API ...

Bertera Pietro