Kubernetes Message Forum

Message forum created using Python3, MongoDB, Jinja2, MetalLB, and Metrics Server.

Downloading files

git clone https://github.com/aarole/k8s-message-board.git
cd k8s-message-board/

Setting up Metrics Server

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

Verify that Metrics Server is running

kubectl get pods -n kube-system

Setup MetalLB

kubectl apply -f https://raw.githubusercontent.com/metallb/metallb/v0.11.0/manifests/namespace.yaml
kubectl apply -f https://raw.githubusercontent.com/metallb/metallb/v0.11.0/manifests/metallb.yaml

Create ConfigMap to configure MetalLB.

apiVersion: v1
kind: ConfigMap
metadata:
  namespace: metallb-system
  name: config
data:
  config: |
    address-pools:
    - name: default
      protocol: layer2
      addresses:
      - 192.168.10.2-192.168.10.10

Apply ConfigMap.

kubectl apply -f /path/to/configmap.yaml

Configure MongoDB

Create PersistentVolume and PersistentVolumeClaim

kubectl apply -f ./mongo/pv.yaml
kubectl apply -f ./mongo/pvc.yaml

Create Deployment and Service

kubectl apply -f ./mongo/deployment.yaml
kubectl apply -f ./mongo/service.yaml

Configure Flask App

Create Deployment

kubectl apply -f ./flask/deployment.yaml

Create Service

kubectl apply -f ./flask/service.yaml

Create Ingress

kubectl apply -f ./flask/ingress.yaml

Create HPA

kubectl apply -f ./flask/hpa.yaml

Access Flask App

Get the external IP assigned to the LoadBalancer.

kubectl get svc flask-svc

Access the application using a browser.

http://LOADBALANCER_EXTERNAL_IP