How to pull image from private Docker Registry in Kubernetes cluster 🤔
The question 🤔
How do you get Docker images 🐳 in your Kubernetes cluster from private Docker registries like AWS ECR, Nexus, etc?
Context
For images like MongoDB and Elastic, which 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 image is stored 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 the Kubernetes cluster?
How to do it 🙌🏼
There are 2 steps to take to achieve it.
- You create a Secret component that contains access tokens/credentials to your Docker registry.
Example Secret config:
Secret component
- You configure your Deployment component to use that secret using a specific imagePullSecrets attribute.
Example Deployment config:
Deployment component
Note: Pods can only reference image pull secrets 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:
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