Book Image

OpenShift Multi-Cluster Management Handbook

By : Giovanni Fontana, Rafael Pecora
5 (1)
Book Image

OpenShift Multi-Cluster Management Handbook

5 (1)
By: Giovanni Fontana, Rafael Pecora

Overview of this book

For IT professionals working with Red Hat OpenShift Container Platform, the key to maximizing efficiency is understanding the powerful and resilient options to maintain the software development platform with minimal effort. OpenShift Multi-Cluster Management Handbook is a deep dive into the technology, containing knowledge essential for anyone who wants to work with OpenShift. This book starts by covering the architectural concepts and definitions necessary for deploying OpenShift clusters. It then takes you through designing Red Hat OpenShift for hybrid and multi-cloud infrastructure, showing you different approaches for multiple environments (from on-premises to cloud providers). As you advance, you’ll learn container security strategies to protect pipelines, data, and infrastructure on each layer. You’ll also discover tips for critical decision making once you understand the importance of designing a comprehensive project considering all aspects of an architecture that will allow the solution to scale as your application requires. By the end of this OpenShift book, you’ll know how to design a comprehensive Red Hat OpenShift cluster architecture, deploy it, and effectively manage your enterprise-grade clusters and other critical components using tools in OpenShift Plus.
Table of Contents (23 chapters)
Part 1 – Design Architectures for Red Hat OpenShift
Part 2 – Leverage Enterprise Products with Red Hat OpenShift
Part 3 – Multi-Cluster CI/CD on OpenShift Using GitOps
Part 4 – A Taste of Multi-Cluster Implementation and Security Compliance
Part 5 – Continuous Learning

Main challenges of the public cloud

From small enterprises to big tech companies, most of them face some common challenges when it comes to using and taking full advantage of public cloud providers. Some of the main challenges are as follows:

  • Keeping cloud costs under control: Estimating and managing the costs of applications running in a public cloud provider is not a simple thing – cloud providers' billing models are multifaceted, with hundreds of different options and combinations, each with a pricing factor. Finding the best cost-benefit for one application can take a significant amount of time. To make things even more complex, cloud costs are usually dynamic and flexible – this may change significantly from time to time by type, duration of the contract, type of computing resources, and so on.
  • Security: Data privacy and security is one of the major concerns with public clouds, according to the IDG's research – almost 40% of them classified it as the top challenge. That is, it is naturally much more difficult to secure an IT environment that comprises of multiple different providers than the old days, in which the IT department usually only had a few on-premises environments to manage.
  • Governance, compliance, and configuration management: Multiple providers mean different offerings and standards, probably different teams working with each of them, and, consequently, heterogeneous environments.
  • Integration: Organizations that have legacy services and want to integrate with their applications, which are hosted in the cloud, usually face some dilemmas on the best way to do those integrations. While cloud providers virtually have no limits, when you integrate your applications with your legacy infrastructure, you might be creating a harmful dependency, which will limit their scalability. However, mainly for big enterprises, those integrations are inevitable, so how can we prevent dependency issues (or at least minimize them)?
  • Vendor lock-in: A common concern when adopting cloud providers is often related to being locked in with a single vendor and the business risks associated with it. I would say that there is a thin line between getting the best price from the cloud provider and being locked into their services. What could happen to the business if the cloud provider decides to raise prices in the next contractual negotiation? Is this a risk your business can afford? How can we mitigate it? Here, the quote you get what you pay for is suitable!
  • Human resources and enablement: Hiring and keeping talented people in IT has always been a hard task; cloud technologies are no different. Cloud engineer, Architect, SRE, Cloud Native Application Developer – these are just a few job positions that open every day, and most companies struggle to fill them. Hiring, training, and maintaining a skilled team to develop and operate applications in the cloud is a real challenge.


You can check out the complete IDG research at [Accessed 30 August 2021].