Working with Multiple Clusters

Topic Objectives

In this topic we will discuss:

  • Why manage multiple clusters

  • Red Hat Advanced Cluster Management for Kubernetes Basics

  • Managed Cluster Groups

  • Other Considerations

Why manage multiple clusters

Kubernetes adoption leads to multicluster

“As Kubernetes gains adoption across the industry, scenarios are arising in which I&O teams are finding they must deploy and manage multiple clusters, either in a single region on-premises or in the cloud, or across multiple regions….for a number of reasons, including multi-tenancy, disaster recovery, and with hybrid, multicloud, or edge deployments.”

Multi-Cluster Challenges

multicluster challenges

  • This increase of clusters presents challenges to organizations responsible for managing these clusters.

  • The infrastructure/operations teams that are responsible for ensuring the deployment, configuration and management of these clusters will need the proper tools.

  • The DevOps teams will need clusters to develop their applications and will have increasing requests for more resources and consistency across clusters.

  • The Organization as a whole will need to have multiple target environments in which to deploy clusters.

  • In high volume scenarios the clusters might need to be created in cloud providers depending on cost and resource availability.

  • This presents a challenge where a central management tool is needed to ensure that operators can deploy, maintain and manage resources.

Multi-Cluster Management Options

  • You can do it manually using custom scripts

    • This presents many challenges as scripts are homegrown and maintainability can become an issue.

  • You can use ArgoCD to a degree

    • ArgoCD’s forte is to declaratively deploy applications onto a Kubernetes cluster not manage clusters.

  • Use Red Hat Advanced Cluster Management for Kubernetes which is built to manage multiple clusters

What is Red Hat Advanced Cluster Management for Kubernetes

Red Hat® Advanced Cluster Management for Kubernetes controls clusters and applications from a single console, with built-in security policies. Extend the value of Red Hat OpenShift® by deploying apps, managing multiple clusters, and enforcing policies across multiple clusters at scale. Red Hat’s solution ensures compliance, monitors usage, and maintains consistency.

For more information visit: Advanced Cluster Management

multicluster rhacm value

  • Multi-Cluster Lifecycle Environment:

    • You can centrally create, update and delete Kubernetes clusters across multiple private and public clouds

    • Search, find and modify any kubernetes resource across the entire domain.

    • Quickly troubleshoot and resolve issues across your federated domain

  • Policy Driven Governance

    • Centrally set & enforce policies for security, applications, & infrastructure

    • Quickly visualize detailed auditing on configuration of apps and clusters

    • Built-in CIS compliance policies and audit checks

    • Immediate visibility into your compliance posture based on your defined standards

  • Advanced Application Lifecycle

    • Easily Deploy Applications at Scale

    • Deploy Applications from Multiple Sources

    • Quickly visualize application relationships across clusters and those that span clusters