Overview In this Post , We’ll share the Process how you can Develop and Deploy .NET Application using Docker and Kubernetes and Adopt DevOps in existing .NET Applications Prerequisites To follow this guide you need — is an open source platform that automates container operations and is best for testing Kubernetes. Kubernetes Kubernetes Minikube — is command line interface to manage Kubernetes cluster either remotely or locally. To configure kubectl in your machine follow this . Kubectl Kubectl link — Shared Persistent Storage is permanent storage that we can attach to the Kubernetes container so that we don`t lose our data even container died. We will be using GlusterFS as a persistent data store for Kubernetes container applications. Shared Persistent Storage — Application Source Code is source code that we want to run inside a kubernetes container. .NET Application Source Code — contains a bunch of commands to build .NET application. Dockerfile Dockerfile — The is an online image store for container images. Container-Registry Container Registry Below mentioned options are few most popular registries. Private Docker Hub AWS ECR Docker Store Google Container Registry Create a Dockerfile The below-mentioned code is sample dockerfile for .NET applications. In which we are using Microsoft .NET 1.1 SDK for .NET Application. FROM microsoft/dotnet:1.1-sdk
# Setting Home Directory for application 
WORKDIR /app 

# copy csproj and restore as distinct layers
COPY dotnetapp.csproj .
RUN dotnet restore

# copy and build everything else
COPY . .
RUN dotnet publish -c Release -o out

EXPOSE 2223

ENTRYPOINT ["dotnet", "out/main.dll"] Building .NET Application Image The below-mentioned command will build your application container image. $ docker build -t <name of your application>:<version of application> . Publishing Container Image Now we publish our .NET application container images to any container registry like , , , Private Docker Registry. Docker Hub AWS ECR Google Container Registry We are using for publishing Container Images. Azure Container Registry You also need to on and then create Container Registry using this link. Sign Up Azure Cloud Platform Now to Pull and Push to Azure Container Registry. Click The Link Similarly, we can Push or Pull any container image to any of the below-mentioned Container Registry like Docker Hub, AWS ECR, Private Docker Registry, Google Container Registry etc. Creating Deployment Files for Kubernetes Deploying application on kubernetes with ease using deployment and service files either in JSON or YAML format. Deployment File Following Content is for “** **deployment.yml” file of Python container application. <name of application>. apiVersion: extensions/v1beta1
kind: Deployment
metadata:
  name: <name of application>
  namespace: <namespace of Kubernetes>
spec:
  replicas: <number of application pods>
  template:
	metadata:
  	labels:
   	k8s-app: <name of application>
	spec:
  	containers:
  	- name: <name of application>
    	image: <image name >:<version tag>
    	imagePullPolicy: "IfNotPresent"
    	ports:
      - containerPort: 2223 Service File Following Content is for “** **service.yml” file of Python container application. <name of application>. apiVersion: v1
kind: Service
metadata:
  labels:
	k8s-app: <name of application>
  name: <name of application>
  namespace: <namespace of Kubernetes>
spec:
  type: NodePort
  ports:
  - port: 2223
  selector:
	k8s-app: <name of application> Running .NET Application on Kubernetes .NET Application Container can be deployed either by kubernetes Dashboard or Kubectl (Command line). I`m explaining command line that you can use in production Kubernetes cluster. $ kubectl create -f <name of application>.deployment.yml
$ kubectl create -f <name of application>.service.yml Now we have successfully deployed .NET Application on Kubernetes. Verification We can verify application deployment either by using Kubectl or Kubernetes Dashboard. The below-mentioned command will show you running pods of your application with status running/terminated/stop/created. $ kubectl get po --namespace=<namespace of kubernetes> | grep <application name> Result of above command Continue Reading the Full Article — Deploying .NET Application on Docker & Kubernetes

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