Microservicio con Jacoco y Sonar

Plugins para Eclipse (opcional):

Para Jacoco: https://www.eclemma.org/

Para SonarLint, buscarlo en el Eclipse Marketplace

Ejecucion:

Ejecucion de tests que incluyen la cobertura con Jacoco:

mvn clean test

Ejecucion de Sonar:

PS C:\tools\sonarqube-6.7.5\bin\windows-x86-64> .\StartSonar.bat

mvn sonar:sonar

Ver en localhost:9000

https://reflectoring.io/unit-testing-spring-boot/

https://howtodoinjava.com/spring-boot2/spring-boot-mockmvc-example/

https://memorynotfound.com/unit-test-spring-mvc-rest-service-junit-mockito/

Spring Profiles:

.\mvnw package -DskipTests

Profile Default:

java -jar target/product-service-0.0.1-SNAPSHOT.jar

Profile dev:

java -jar target/product-service-0.0.1-SNAPSHOT.jar --spring.profiles.active=dev

Extras:

DevTools: Acceder a http://localhost:8082/h2-console/ para ver consola de base en memoria

Actuator: Ver Apis de Acturator: http://localhost:8082/actuator

Prometheus: Ver API: http://localhost:8082/actuator/prometheus

Levantar Prometheus y Graphana:

docker run -p 9090:9090 -v /c/Users/cha14309/prometheus.yml:/etc/prometheus/prometheus.yml prom/prometheus

docker run -d --name=grafana -p 3000:3000 grafana/grafana

https://www.callicoder.com/spring-boot-actuator-metrics-monitoring-dashboard-prometheus-grafana/

http://micrometer.io/docs/registry/prometheus

https://docs.spring.io/spring-boot/docs/current/reference/htmlsingle/#production-ready-metrics-export-prometheus

Kubernetes Horizonthal Pod Autoescaler:

minikube start

minikube addons enable heapster

Esperar algunos minutos y:

kubectl top node

kubectl top pod --all-namespaces

Ver Grafana en un browser:

minikube service monitoring-grafana -n kube-system

& minikube docker-env | Invoke-Expression

mvn clean install

docker build -t diegochavezcarro/product-app:1.0.0 .

kubectl create -f .\product-app-k8s-template.yaml

kubectl create -f .\product-hpa.yaml

Ir viendo que pasa:

kubectl get hpa,deployment

No anduvo.

kubectl run -it --rm --restart=Never prueba --image=busybox -- sh -c "wget -O - -q http://product-service/products/:8082"

Probar metrics-server:

git clone https://github.com/kubernetes-incubator/metrics-server.git

kubectl apply -f metrics-server/deploy/1.8+/

kubernetes-sigs/metrics-server#97

https://stackoverflow.com/questions/52694238/kubectl-top-node-error-metrics-not-available-yet-using-metrics-server-as-he?rq=1

Cambiar:

kubectl apply -f .\metrics-server\deploy\1.8+\metrics-server-deployment.yaml

Update 24 septiembre 2020

kubectl apply -f https://github.com/kubernetes-sigs/metrics-server/releases/download/v0.3.7/components.yaml

kubectl edit deploy -n kube-system metrics-server

Agregar a los arqs ya existentes del container del metrics server:

args:

• --kubelet-insecure-tls
• --kubelet-preferred-address-types=InternalIP,ExternalIP,Hostname

Probar si se instalo:

kubectl top node

kubectl get hpa,deployment

kubectl describe hpa

Se vera como escala hacia abajo

Para escalar hacia arriba:

kubectl run -it --rm --restart=Never loadgenerator --image=busybox -- sh -c "while true; do wget -O - -q http://product-service:8082/products/; done"

Jenkins

Crear multibranc pipeline, en el codigo ingresar la credencial de github con user y pass y elegir el repo

Para los web kooks, aunque no va a andar pq el jenkins es local:

1. Add a 'Secret Text' global credential. The secret should be your access token from GitHub that probably has at least write access to repos (I didn't investigate which roles are required). ID and description doesn't matter. This must be 'Secret Text' for the next pieces to work right 2.Go to Manage Jenkins -> Configure System and down to 'GitHub Servers'
2. Hit 'Add GitHub Server' Name - doesn't matter API URL - since I don't have a private GitHub Enterprise install (just private repos on github.com) I used the default of https://api.github.com Credentials - the 'Secret Text' credential from earlier (this dropdown only pulls 'Secret Text' credentials) Manage Hooks - checked
3. Hit 'Test Connection' to make sure everything is kosher
4. Go to your organization and 'Scan Organization Now' on the left

Ver: https://issues.jenkins-ci.org/browse/JENKINS-49332

Reference Documentation

For further reference, please consider the following sections:

https://kubernetes.io/docs/tasks/run-application/horizontal-pod-autoscale-walkthrough/ https://spotinst.com/blog/collecting-kubernetes-pod-metrics-heapster-is-dead/

• Official Apache Maven documentation
• https://www.baeldung.com/sonar-qube

Guides

The following guides illustrate how to use some features concretely:

• Building a RESTful Web Service with Spring Boot Actuator
• Accessing Data with JPA
• Building a RESTful Web Service
• Serving Web Content with Spring MVC
• Building REST services with Spring