title: Kubernetes Application with multiple Resources single YAML
body: <p>currently i used docker-compose to arrange my application that consists of 3 dockerimages - a postgresql database and 2 wildfly application servers (Frontend-ui, backend).</p>
  
  <p>My <strong>docker-compose.yml</strong> looks like this:</p>
  
  <pre><code>version: '3.0'
  services:
    my-webgui-service:
      image: test/mywebgui
      ports:
      - "18081:8080"
      links:
      - my-app-service
    my-app-service:
      image: test/myapp
      ports:
      - "18080:8080"
      - "29990:9990"
      links:
      - db-service
    db-service:
      image: test/postgres
      ports:
      - "15432:5432
  </code></pre>
  
  <p>Now, i would like to implement the same thing via kubernetes. </p>
  
  <p>Is it possible to arrange this in a single yaml-File, that contains the configuration for service, deployment and pods?
  I thought that it is easier to manage automated deployments when not having seperated yml-files.</p>
  
  <p>Is this a best practise? </p>
  
  <p>Best regards, Shane</p>