SSSS - Server Side Swift in Scale

Start with local development

git clone git@github.com:batschz/ssss.git

Install vapor

brew tap vapor/tap
brew install vapor/tap/vapor

and create a Xcode project via vapor cli

vapor xcode

Open the project in Xcode and run the Run target. Try out your endpoints using http://localhost:8080 in your browser.

Docker

Install docker

Download docker: https://store.docker.com/editions/community/docker-ce-desktop-mac

Build docker image

docker build -t ssss:latest .

Run docker image

docker run -p 8080:8080 -t ssss:latest and try it out in your browser http://localhost:8080

Kill all docker container

docker kill $(docker ps -q)

Kubernetes

Helpful medium post that helps to understand kubernetes and it parts: https://medium.com/@awkwardferny/getting-started-with-kubernetes-ingress-nginx-on-minikube-d75e58f52b6c

Minikube

Minikube is a tool that makes it easy to run Kubernetes locally. Minikube runs a single-node Kubernetes cluster inside a VM on your laptop for users looking to try out Kubernetes or develop with it day-to-day.

Install

https://kubernetes.io/docs/tasks/tools/install-minikube/

Run

minikube run

Switch Docker context to Docker inside minikube

eval $(minikube docker-env) or switch back to local Docker context eval $(docker-machine env -u)

Build docker images in k8s docker registry

docker build -t ssss:1 .

List all docker images in current registry

docker images

Create deployment and start pods

kubectl apply -f kc-deployment.yaml

kubectl get po to monitor the pods

Create service

kubectl apply -f kc-service.yaml

kubectl get svc to monitor the services

Create ingress

kubectl apply -f kc-ingress.yaml

kubectl get ingress to monitor the ingress

Get Cluster IP

minikube ip

and open the ip in your browser to test

Deploy a update

docker build -t ssss:2 .

change the version of the image in the kc-deployment.yaml file and run kubectl apply -f kc-deployment.yaml

You can monitor the rolling update via kubectl get po -w

Deploy another micro service (google greeter)

kubectl apply -f kc-deployment-greeter.yaml

kubectl apply -f kc-service-greeter.yaml

add the following lines to the kc-ingress.yaml file:

- path: /greeter
	backend:
	  serviceName: greeter
	  servicePort: 8080

and deploy it via kubectl apply -f kc-ingress.yaml