Spring Kubernetes Example

Example Spring cloud kubernetes project. Run in local&kubernetes environment.

Compile Projects

You can compile projects via:

Local Development:

You need docker up and running in local environment.

1. Before Running apps from you favorite IDE apply configs in local kube env

   $ bash build.sh apply-config-k8

   You can remove config via

   $ bash build.sh remove-config-k8

2. Check applications on local environment
   1. Address Endpoint

      $ curl http://localhost:8081/address/1

   2. User Endpoint which calls address domain

      $ curl http://localhost:8080/users/1

   3. Get environment configs

      $ curl http://localhost:8080/config

Kubernetes:

Please check ingress for kubernetes environment. Check Adding Ingress

1. Compile project and build docker images

   $ bash build.sh compile

2. Start Kubernetes deployments, services and ingress

   $ bash build.sh start-k8

3. Scale Kubernetes deployments

   $ bash build.sh start-k8 scale=2

4. Stop Kubernetes deployments, services and ingress

   $ bash build.sh stop-k8

5. Check applications on kubernetes
   1. Address Endpoint

      $ curl http://localhost:31001/address/1

   2. User Endpoint which calls address domain

      $ curl http://localhost:31000/users/1

   3. Get environment configs

      $ curl http://localhost:31000/config

6. Access via Ingress
   1. Address Endpoint

      $ curl http://localhost/address-api/address/1

   2. User Endpoint which calls address domain

      $ curl http://localhost/user-api/users/1

   3. Get environment configs

      $ curl http://localhost/user-api/config

7. Update Configuration
   1. Update configuration file in user-docker config and refresh actuator via endpoint.

   $ curl -X POST http://localhost/user-api/actuator/refresh

Add Ingress

Please read documentation for adding ingress if you are not using mac https://kubernetes.github.io/ingress-nginx/deploy/#docker-for-mac

This command add ingress to your docker desktop kubernetes.

$ kubectl apply -f https://raw.githubusercontent.com/kubernetes/ingress-nginx/controller-v0.46.0/deploy/static/provider/cloud/deploy.yaml 

Cli Versions

Cli	Version
docker	20.10.5
docker desktop kubernetes	v1.19.7
mvn	3.8.1