We can decide to deploy multi container applications to a single node local cluster and choose the type of Orchestrator. In the recent version of Docker for Desktop (Mac & Windows), there is built in support for Kubernetes. The Docker for Mac version should be 17.12.0-ce-mac45 or later after updating.My previous post was about doing continuous deployment of Kubernetes application using Skaffold to a Minikube cluster. Kubernetes support is still considered experimental with this release, so to enable the download and use of Kubernetes components you must be on the Edge channel. If you need to install a new copy of Docker for Mac you can download it from the Docker Store.Heapster is a cluster-wide aggregator of monitoring and event data. In comes Heapster, a project meant to provide a base monitoring platform on Kubernetes. Installed and running Docker for Mac (edge) Kubernetes enabled Preparation list all pods kubectl get pods -all-namespaces. The whole thing we now realize super fast via Heapster, InfluxDB and Grafana. In this post, I will demonstrate how we can use Skaffold to deploy to a Kubernetes cluster instead of Minikube.There is a very easy way to pimp the Kubernetes WebUI with monitoring output.Build a Spring Boot application and Docker Image.We will perform following steps during the course of this post Set up OCI CLI to access your cluster. Set up a Kubernetes cluster on OCI. Heapster runs as a pod in the cluster, similar to how any Kubernetes application would run.Set up an authentication token.
Docker Kubernetes Heapster Mac Version ShouldIn my case I had these settings already enabled. Finally apply the setting as shown with steps 1 to 4 below. Select the Kubernetes pane, enable Kubernetes support, select default Orchestrator ad Kubernetes. Navigate to the preferences section of Docker. Set context to work with Docker for MacEnable Kubernetes support for Docker for MacLets first enable the support for Kubernetes orchestrator for our installation of Docker for Mac. Cisco uc560 software packLets first get the list of all the clusters we have at our disposal. We need to ensure that the right context is set for the kubectl. Kubectl can work with multiple clusters at the same time. Same way the deploy is done in less than 2 seconds. Skaffold does its magicThe proper context has been selected by skaffold.The build speed is just over 1 second to build the required Docker images. We execute the same command skaffold dev which we did during the earlier post. This can be done by executing the commandKubectl config use-context docker-for-desktopWe are now ready to deploy the application to this cluster.Once the right context is set, there is no change to be done on the skaffold side. We need the context to be set to the docker-for-mac context. The minikube cluster is the current context as shown by the * sign in front of the cluster name. ![]() Continuous Kubernetes deployments with Skaffold on. I hope that developers working with Docker and Kubernetes find this tool useful.Until next time, Code with Passion and Strive for Excellence.
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