The ability to deploy Docker stacks to Kubernetes will help those contemplating a migration from Swarm but might also hasten its demise.

This has been somewhat of a big topic for debate in the world of containers and orchestration, and for good reason.

Since Docker offers an orchestration tool of its own, Docker Swarm, this move has given rise to article titles such as Docker give into the inevitable or Kubernetes has won.

While one can argue about the unequivocal tone used in these titles, there is little doubt that 2017 was a watershed year for Kubernetes, and in many ways for Docker as well.

Docker Open Port Mac With Kubernetes

The announcement signified a major strategic decision by Docker, and it was followed up by the release of Docker for Mac with Kubernetes a few weeks ago.

What does this release mean Well, you can now build their containerized applications and deploy them to Kubernetes, locally and on the same Docker instance.

As part of the deal, you get a single-node Kubernetes cluster using the latest version of Docker as the container runtime, and the ability to deploy to Kubernetes using Docker Compose or Kubernetes manifest files.

This article reviews this new release and takes you through some steps to get a simple demo application runningand yes, there is some logging involved as well.

Docker Open Port Install The Edge

Downloading and installing Docker for Mac For now, Kubernetes is only available on Docker for Mac 17.12 CE Edge (special Docker version for new and experimental features), so make sure you install the Edge version.

On your Mac, double-click the Docker.dmg file and begin the installation process as instructed.

This process takes a few minutes, at the end of which Docker is installed and launched.

You will also see the little Docker whale icon appear at the top of your Macs screen.

Open your terminal and enter the docker info command to verify.

To enable it, click on the Docker icon, go to Preferences Kubernetes, select the Enable Kubernetes checkbox and hit Apply.

After a few minutes, Kubernetes will be enabled, as reflected by the green statuses at the bottom of the preferences dialog.

Deploying a demo application to Kubernetes Its time to deploy a demo application.

I will use the demo application used for the announcement at DockerCon Europe, which includes three containers a Postgres database, a Java REST API for reading from the database and a simple Go app that calls the API to build cute sentences.

To do this, we will use the Docker log collector created by Logz.io.

This lightweight Docker container will ship container logs, as well as Docker stats and daemon events.

In production, you will need to use it per cluster node, but in our case we only have one node so its an easy and quick fix.

Create a manifest file, and use the following example (insert your Logz.io token where relevant): sudo vim logzio.yml.

In just a few minutes, you can have a Kubernetes cluster, albeit consisting of a single node, up and running in your local dev environment.

With all due respect to Minikube, Docker for Mac with Kubernetes is probably one of the easiest ways to set up a Kubernetes dev environment.

More on the subject: What Are the Hardest Parts of Kubernetes to Learn Amazon EC2 Container System (ECS) Log Analysis Part 2 Log Correlation with Logz.io and Datadog It will be interesting to see where Docker takes this in 2018.

What will happen to Docker Swarm There are still plenty of Swarm users out there.

Docker For Mac Open Port