A Practical Guide to Kubernetes/

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Creating a Zero-Downtime Deployment

Creating a Zero-Downtime Deployment

Learn how to create a zero-downtime Deployment using the file defined in the previous lesson.

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Creating the deployment

Before we explore rolling updates, we should create the Deployment and, with it, the first release of our application.

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kubectl create -f go-demo-2-api.yml --record
kubectl get -f go-demo-2-api.yml

We create the Deployment and retrieve the object from the Kubernetes API server.

The output of the latter command is as follows:

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NAME          DESIRED  UP-TO-DATE AVAILABLE AGE
go-demo-2-api 3             3          3         1m

Please make sure that the number of available Pods is 3. Wait for a few moments if that’s not the case. Once all the Pods are up and running, we’ll have a Deployment that will create a new ReplicaSet which will subsequently create three Pods based on the latest release of the vfarcic/go-demo-2 image.

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