Deploy an application dotnetcore on Kubernetes locally
Installing application dotnetcore demo:
# cloning the code
git clone https://github.com/dotnet/dotnet-docker
Running the app locally:
Navigate to the project folder at dotnet-docker/samples/aspnetapp/aspnetapp.
dotnet run
Go to http://localhost:5000 in a browser to test the app.
Press Ctrl+C at the command prompt to stop the app.
Building the application on Docker container:
Navigate to the Dockerfile folder at dotnet-docker/samples/aspnetapp.
Run the following commands to build sample in Docker:
docker build -t aspnetapp .
Pushing the image to Docker Hub:
# this example I'm using Ubuntu
sudo docker tag aspnetpp rondweb/dotnetcore:aspnetapp
sudo docker push rondweb/dotnetcore:aspnetapp
So, we already have our docker image stored in Docker Hub and now we have to create our manifest file to publish our app on Kubernetes locally.
apiVersion: apps/v1
kind: Deployment
metadata:
name: aspnetcoreapp
labels:
app: aspnetcoreapp
spec:
replicas: 1
selector:
matchLabels:
app: aspnetcoreapp
template:
metadata:
labels:
app: aspnetcoreapp
spec:
containers:
- name: aspnetcoreapp
image: rondweb/dotnetcore:aspnetapp
ports:
- containerPort: 80
resources:
requests:
cpu: 100m
memory: 100Mi
limits:
cpu: 200m
memory: 200Mi
---
apiVersion: v1
kind: Service
metadata:
name: aspnetcoreapp-service
spec:
type: LoadBalancer
ports:
- port: 80
selector:
app: aspnetcoreapp
---
apiVersion: networking.k8s.io/v1beta1
kind: Ingress
metadata:
name: aspnetcoreapp-ingress
labels:
app: aspnetcoreapp-ingress
spec:
rules:
- http:
paths:
- path: /
backend:
serviceName: aspnetcoreapp-service
servicePort: 80
[git-github-checkout url=”https://github.com/rondweb/kubernetes/blob/dotnetcore/k8s.yml”]
Now let’s install our app on Kubernetes:
kubectl apply -f https://bit.ly/3ndrgeR
After the installation you can check if everything is ok:
kubectl get all
If everything is ok, you can see the app running!
To navigate and test the app:
kubectl port-forward service/aspnetcoreapp-service 8000:80
Navigate to the url: http://localhost:8000/ and check your new app running on Kubernetes! 🙂
Reference: https://docs.microsoft.com/en-us/aspnet/core/host-and-deploy/docker/building-net-docker-images?view=aspnetcore-5.0
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