Hello! This is Mumshad Mannambeth
and we are going through the Certified Kubernetes Administrators Course. In this lecture
we discuss about Cluster maintenance related topics.
We start by looking at operating system upgrades.
We see the implications of losing a node from the cluster where we take a node out of the cluster on
purpose like for applying patches or upgrades on the OS itself.
We then look at the cluster upgrade process.
But before we do that, we need to know a little bit about kubernetes releases and versions.
And the best practices around upgrading, when to upgrade, what version to upgrade to etc.
So we look at that first.
Once you learn the upgrade procedure, you are asked to upgrade a cluster by yourself.
You will perform an end to an upgrade of a cluster yourself with live applications running on them.
And finally we look at some of the backup and restore methodologies. You will practice
a disaster scenario where you take a backup of the kubernetes cluster, then go through a simulated
disaster and then you're asked to recover from that disaster and bring the cluster back to the previous
state.
Well fun stuff coming up so let's get started.