htrixe / spring-boot-microservices

Learn & Build Microservices with Java, Spring Boot, Spring Cloud, Docker, Kubernetes, Okta, Spring Security, CI/CD, GCP

Spring boot and Microservice with Kubernates

Spring demo with Microservice and Kubernetes

Running kubernates dashboard

• kubectl apply -f https://raw.githubusercontent.com/kubernetes/dashboard/v2.5.0/aio/deploy/recommended.yaml

• kubectl proxy

• Get token : kubectl -n kubernetes-dashboard create token admin-user

Understanding building individual Microservice

Each microservice contains pom.xml. Before building make sure the docker hub credentials are setting settings.xml file.

To run only build : mvn clean install

To build and push to docker : mvn clean install jlib:build

Applying kubernates configuration to make pod running.

Go to k8s directory which contains

• Apply config maps first : kubectl apply -f generic-config-map.yaml
• Setting up mysql pod : kubectl apply -f mysql.yaml This yaml contains mysql password as well , you can use secrets/config for passwords too.
• Set up zipkin : kubectl apply -f zipkin.yaml Access zipkin dashboard with http://localhost:9411 which was exposed using loadbalancer
• Set up service registry pod : kubectl apply -f service-registry-deployment.yaml
• Set up config server pod : kubectl apply -f config-service-deployment.yaml
• Set up cloud gateway pod : kubectl apply -f cloud-gateway-deployment.yaml
• Set up other microservices pod : kubectl apply -f payment-service-deployment.yaml/order-service-deployment.yaml/product-service-deployment.yaml

Related to OKTA Configuration

First create new application in okta . Application type should be open id application. Authroization server has configuration related to access token and refresh token validity.

Go to security -> API -> default audience to modify access policies and timing.

To get refresh token , we need to ensure we have grant type refresh token for application and also scope is offline_access provided when retriving tokens. Refer application yaml of cloud gateway.