Episode Details

In this episode, Lois Houston and Nikita Abraham, along with senior OCI instructor Mahendra Mehra, dive into the fundamentals of Kubernetes. They talk about how Kubernetes tackles challenges in deploying and managing microservices, and enhances software performance, flexibility, and availability. OCI Container Engine for Kubernetes Specialist: https://mylearn.oracle.com/ou/course/oci-container-engine-for-kubernetes-specialist/134971/210836 Oracle University Learning Community: https://education.oracle.com/ou-community LinkedIn: https://www.linkedin.com/showcase/oracle-university/ X (formerly Twitter): https://twitter.com/Oracle_Edu Special thanks to Arijit Ghosh, David Wright, Radhika Banka, and the OU Studio Team for helping us create this episode. -------------------------------------------------------- Episode Transcript:

00:00

Welcome to the Oracle University Podcast, the first stop on your cloud journey. During this series of informative podcasts, we'll bring you foundational training on the most popular Oracle technologies. Let's get started!

00:26

Lois: Hello and welcome to another episode of the Oracle University Podcast. I'm Lois Houston, Director of Innovation Programs with Oracle University, and with me is Nikita Abraham, Principal Technical Editor.

Nikita: Hi everyone! We've spent the last two episodes getting familiar with containerization and the Oracle Cloud Infrastructure Registry. Today, it's going to be all about Kubernetes. So if you've heard of Kubernetes but you don't know what it is, or you've been playing with Docker and containers and want to know how to take it to the next level, you'll want to stay with us.

Lois: That's right, Niki. We'll be chatting with Mahendra Mehra, a senior OCI instructor with Oracle University, about the challenges in containerized applications within a complex business setup and how Kubernetes facilitates container orchestration and improves its effectiveness, resulting in better software performance, flexibility, and availability.

01:20

Nikita: Hi Mahendra. To start, can you tell us when you would use Kubernetes?

Mahendra: While deploying and managing microservices in a distributed environment, you may run into issues such as failures or container crashes. Issues such as scheduling containers to specific machines depending upon the configuration. You also might face issues while upgrading or rolling back the applications which you have containerized. Scaling up or scaling down containers across a set of machines can be troublesome.

01:50

Lois: And this is where Kubernetes helps automate the entire process?

Mahendra: Kubernetes is a portable, extensible, open source platform for managing containerized workloads and services that facilitates both declarative configuration and automation. You can think of a Kubernetes as you would a conductor for an orchestra. Similar to how a conductor would say how many violins are needed, which one play first, and how loud they should play, Kubernetes would say, how many webserver front-end containers or back-end database containers are needed, what they serve, and how many resources are to be dedicated to each one.

02:27

Nikita: That's so cool! So, how does Kubernetes work?

Mahendra: In Kubernetes, there is a master node, and there are multiple worker nodes. Each worker node can handle multiple pods. Pods are just a bunch of containers clustered together a