vs_microservices

Abgabe für das Verteilte Systeme Labor

Docker:

• build jar file:

  cd ./product-service 
  ./gradlew build
  cd .././category-service 
  ./gradlew build
  cd ../

• test jar file:

  java -jar ./product-service/build/libs/product-service.jar
  java -jar ./category-service/build/libs/category-service.jar

• build image:

  cd ./product-service
  docker build -t joma1021/product-service-docker .
  cd .././category-service
  docker build -t unsi1012/category-service-docker .

• docker compose:

  cd ../
  docker-compose up -d
  
  

Gegen DB Verbinden

• Gegen DB verbinden und SQL-Befehl ausführen:

  mysql --host=127.0.0.1 --port=3306 -u root -p

  Password: c8de110f37300a53a971749

• SQl-Bsp zum DB anlegen:

      CREATE DATABASE IF NOT EXISTS `product`;   
      CREATE USER 'user'@'%' IDENTIFIED BY 'password';
      GRANT ALL ON *.* TO 'user'@'%';

Kubernetes

Deployment

• start minikube:

  minikube start

• map minikube to docker-env:

  minikube docker-env

  & minikube -p minikube docker-env | Invoke-Expression

  oder

  eval $(minikube -p minikube docker-env)

• docker build:

  docker-compose build

• kubectl apply:

  kubectl apply -f product-service-service.yaml,category-service-service.yaml,web-shop-db-image-service.yaml,product-service-deployment.yaml,category-service-deployment.yaml,web-shop-db-image-deployment.yaml,web-shop-db-image-claim0-persistentvolumeclaim.yaml,apache-development.yaml,apache-service.yaml,hska-vis-legacy-service.yaml,hska-vis-legacy-deployment.yaml
  OR 
  sh ./kubernetes-apply.sh

• open apache page:

  minikube service apache

• remove kubernetes deployments:

  ./kubernetes-remove.sh

• delete minikube:

  minikube delete --all

• open minikube dashboard:

  minikube dashboard

• open tunnel + show external ip

  minikube tunnel -c
  kubectl get svc

istio:

• set istioctl

  cd istio-1.12.1/
  export PATH=$PWD/bin:$PATH

• open kiali

  cd ../
  kubectl rollout status deployment/kiali -n istio-system
  istioctl dashboard kiali

• open prometheus

  istioctl dashboard prometheus

• open grafana

  istioctl dashboard grafana

Logging/Monitoring:

• Product-Service Example Average Response Time

sum(rate(istio_request_duration_milliseconds_sum{pod_template_hash="5559b5f6df|6b67458f69|69f8fd644f",source_workload="product-service",source_workload_namespace="default"}[1m])) / sum(rate(istio_request_duration_milliseconds_count{pod_template_hash="5559b5f6df|6b67458f69|69f8fd644f",source_workload="product-service",source_workload_namespace="default"}[1m]))

• Average Response Time of all Services:

sum(rate(istio_request_duration_milliseconds_sum{source_workload="apache|product-service|category-service",source_workload_namespace="default"}[1m])) / sum(rate(istio_request_duration_milliseconds_count{source_workload="apache|product-service|category-service",source_workload_namespace="default"}[1m]))