services.yaml

# note: YAML definitions for multiple components/resources can be bundled together into one YAML file
# '---' is used to separate the definitions of the components/resources

# define a service for the mongodb server
apiVersion: v1
kind: Service
metadata:
  name: mongodb-service
spec:
  selector:
    app: mongodb
  ports:
    - protocol: TCP
      port: 27017
      targetPort: 27017
---
# define a service for mongo-express
# set the type to LoadBalancer and configure the ports
# don't forget to specify a nodePort as well! a nodePort exposes the pod to applications outside the cluster. this will allow you to access the frontend admin interface from your host system

apiVersion: v1
kind: Service
metadata:
  name: mongo-express
spec:
  selector:
    app: mongo-express
  type: LoadBalancer
  ports:
    - protocol: TCP
      port: 8081
      targetPort: 8081
      nodePort: 30001
---
# define a `Service` for flask-app
# set the type to LoadBalancer and configure the ports
# don't forget to specify a nodePort as well! a nodePort exposes the pod to applications outside the cluster. this will allow you to access the frontend admin interface from your host system
apiVersion: v1
kind: Service
metadata:
  name: flaskapi
spec:
  ports:
  - port: 5001
    protocol: TCP
    targetPort: 5001
  selector:
    app: flaskapi
  type: LoadBalancer

# contain permanent ip address that can be attached for each pod
# Also act as load balancer