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How to pull image from private Docker Registry in Kubernetes cluster πŸ€”

techworld_with_nana profile image Techworld with Nana ・1 min read

The question πŸ€”

How do you get Docker images 🐳 in your Kubernetes cluster from private Docker registries like AWS ECR, Nexus, etc?

Context

For images like Mongodb, Elastic, that are hosted on Docker Hub, it’s straightforward because they are hosted in a public repository and anyone can access them.

But your own application lives in a private repository and needs explicit access from the cluster. So how do you pull the application images from your private docker repository on Kubernetes cluster?

How to do it πŸ™ŒπŸΌ

There are 2 steps to take to achieve it.

1) you create a Secret component that contains access token/credentials to your Docker registry.

Example Secret config:
Secret component

2) you configure your Deployment component to use that secret using a specific imagePullSecrets attribute.

Example Deployment config:
Deployment component

Note: Pods can only reference imagePullSecrets in their own namespace, so this process needs to be done one time per namespace!

In the demo video 🎬 I show you the whole process step by step:

Hope it's helpful some of you πŸ™‚


I'm excited to host my first *LIVE Webinar on Kubernetes * πŸ€“ πŸ‘©πŸ»β€πŸ’»

Date: The webinar is on Saturday June 13, 2020
Topic: Deploy Elasticsearch StatefulSet and Kibana with Helm on a Cloud platform

Discussion (1)

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Alejandro Pimentel • Edited

Hi Nana, thank you so much for the excellent content.

You added "imagePullPolicy: Always" to force docker download the image because you had it in your host already.

I think it wouldn't matter since the Docker pulling the image is the one inside minikube, not the one running in your host.

Am I understanding this correctly?

Thanks!