Welcome to the third episode of a series of whiteboard sessions where I’ll discuss ways of doing Multi-Site k8s! When architecting such an environment there are many pitfalls and complexities to solve; things that appear so simple can prove to be so complex and the other way around.

Episode 3: Severed K8s clusters

In this episode I will focus on how to build a multi-site k8s setup using two disparate (“severed”) k8s clusters. Each datacenter will have its own k8s cluster and it’s own storage array platform. Next we’ll be adding two tools to make this work: a pair of CSI drivers (one in each DC), and the Dell Container Storage Module (CSM) called “Replication” to make k8s multi-site aware.

As you may know, k8s itself has no way of understanding storage replication. Luckily Dell’s CSM modules continue where k8s stops! In this case we’ll be using the replication module so that we can make k8s just a little smarter and understand the idea of replicated storage between two clusters.

Watch the whiteboard video here: