Docker For Mac V1 Registry Api

Docker For Mac V1 Registry Api

When you choose to run your kubernetes cluster on AWS, there are 2 easy ways:

If you are using Docker for Mac. Docker for Mac uses HyperKit, a lightweight macOS virtualization solution built on top of the Hypervisor.framework in macOS 10.10 Yosemite and higher. Currently, there is no docker-machine create driver for HyperKit, so you will use virtualbox driver to create local machines. If you want to modify the custom API, open WeatherForecastController.cs under /Controllers. I chose to leave it as-is, just to make this small walkthrough a little bit more readable. Next, we’ll package the API in a Docker-based container. Open your preferred command-line terminal and navigate to the project folder and run the following.

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  1. The almost valina way using Kops
  2. The amazon way using EKS

The common thing between both ways, is using Amazon ECR for storing the docker images and have a worry free push, pull to and from Amazon ECR which requires a IAM Role that allows the worker nodes pulling the images saftly.

Amazon ECR

Amazon Elastic Container Service is one of the cheapst ways to store docker images and safer due to the nature of Amazon IAM.To pull from ECR you first need to authenticate using you AWS credentials, or role, get a token, do docker login to your ECR with the server address, and pull from the repository the docker image.

Docker For Mac V1 Registry Api Tool

Seems hard, well it’s not that bad.Let’s do a short walkthrough from scratch assuming you are on a Mac

If everything went ok, then you should get these lines:

So now you are able to pull and push to ECR, assuming you have the proper permissions.

There are builtin AWS Policies for read only AmazonEC2ContainerRegistryReadOnlyFor read and write AmazonEC2ContainerRegistryPowerUserAnd for read, write and delete AmazonEC2ContainerRegistryFullAccessIf you have more limitation needed, a specific region or something else, copy the policies and limit on new ones.

Docker for Mac

So, now that we have all ready, lets install dockerAfter installation click the docker icon and select Prefrences and enable Kubernetes and click apply

Pulling docker images

So, now we have a running docker and kubernetes, and we are ready to pull images from ECR, and I’ts quite easy :)I’ve made a short gist that generates a registry-secret named ECR that I can use to pull images

  1. Make sure to set the proper region
  2. Make sure to be in the right kubectl context

Now, we have set in the default Kubernetes namespace a registry secret that allows to pull docker images from ECR, this secret contains the temporary token that AWS API responded with. so, if you have a long running cluster on your machine, you will need to delete and recreate it once the token expired.

Docker For Mac V1 Registry Api Software

AWS Credentials secret

Now let’s make another generic secret containing our AWS credentials with another easy bash script

And now we can deploy any docker image in our ECR that uses aws credentials (On AWS use Roles and not credentials if possible) named aws_credentials.

Docker For Mac V1 Registry Api Tutorial

Sample app deployment from ECR to local Kubernetes

So my yaml deployment will now look like this:

Enjoy your running application on your local Kubernetes cluster pulled from ECR and uses AWS Credentials.