This video provides a hands-on tutorial on deploying applications using GitLab CI and Kubernetes. It covers key Kubernetes resources such as deployments, services, persistent volume claims, and Ingress. The tutorial explains how to configure GitLab CI to deploy applications to Kubernetes, focusing on the use of Docker image tags and environment variables. It also details the setup of services and deployments for both a Node.js web application and a Postgres database, including persistent storage solutions. Finally, it discusses traffic routing through Ingress and the use of wildcard DNS for external access.

What is the primary purpose of introducing Kubernetes concepts in this video?

• To make viewers experts in Kubernetes

• To ensure GitLab CI configuration for Kubernetes is understandable

• To eliminate the need for persistent storage

• To replace Docker with Kubernetes

What does the Docker image tag variable in gitlab-ci.yaml refer to?

• The version of Kubernetes

• The location of the Docker image for the web application

• The type of database used

• The number of replicas to deploy

How does Kubernetes handle multiple identical containers for a web application?

• By assigning each a unique IP address

• By deploying them on different clusters

• By using a single container

• By using a service for load balancing and failover

What is the role of a persistent volume claim in Kubernetes?

• To increase the number of replicas

• To provide persistent storage for data

• To update the Kubernetes version

• To manage network traffic

What is the function of an Ingress in Kubernetes?

• To provide persistent storage

• To manage container replicas

• To route external traffic to services

• To deploy applications

How does the Ingress controller route traffic in Kubernetes?

• By using a static IP address

• By matching hostnames with Ingress rules

• By directly accessing the database

• By using a load balancer

What software is used as the ingress controller in the Kubernetes cluster?

• Traefik

• NGINX

• HAProxy

• Apache