Kubernetes for the Absolute Beginners - Hands-On - Deployments - Update and Rollback

The video tutorial covers the concepts of updates and rollbacks in Kubernetes deployments. It explains the process of rollouts and versioning, highlighting the importance of tracking changes and enabling rollbacks. Two deployment strategies, recreate and rolling update, are compared, emphasizing the default rolling update strategy. Methods to update deployments, such as using kubectl apply and set image commands, are discussed, along with their implications on deployment definition files. The tutorial also details how deployments perform upgrades and rollbacks, and concludes with creating deployments using the kubectl run command.

What is the purpose of creating a new deployment revision in Kubernetes?

• To increase the number of replicas

• To automatically update the application

• To track changes and enable rollbacks

• To delete old versions of the application

Which deployment strategy involves taking down all instances before deploying new ones?

• Canary

• Blue-green

• Recreate

• Rolling update

What is the default deployment strategy in Kubernetes if none is specified?

• Recreate

• Canary

• Rolling update

• Blue-green

Which command is used to apply changes to a deployment after modifying the definition file?

• kubectl create

• kubectl delete

• kubectl apply

• kubectl get

What is a potential risk of using the 'kubectl set image' command?

• It may delete the deployment

• It can cause a mismatch in the deployment definition file

• It changes the deployment strategy

• It automatically scales down replicas

How can you rollback a deployment to a previous revision in Kubernetes?

• Using the 'kubectl delete' command

• Using the 'kubectl set image' command

• Using the 'kubectl rollout undo' command

• Using the 'kubectl apply' command

What happens to the replica sets during a rollback operation?

• The old replica set is deleted

• The new replica set is scaled down and the old one is scaled up

• The new replica set is scaled up

• Both replica sets are scaled to zero