k8s-mongo-project

This is my first K8s project. I made this to get some hands-on experience in Kubernetes and expand my knowledge in container orchestration.

Prerequisites

1. minikube
2. kubectl
3. docker

Kubernetes Architecture

How to run

1. Clone the repository

git clone https://github.com/0xt3j4s/k8s-mongo-project.git

2. Start minikube

minikube start

3. Create the secret

kubectl apply -f mongo-secret.yaml

4. Create the mongodb deployment and the internal service

kubectl apply -f mongo.yaml

5. Check the status

kubectl get all

6. Create the configmap

kubectl apply -f mongo-configmap.yaml

7. Create the mongo express pod and the external service

kubectl apply -f mongo-express.yaml

8. Check the status

kubectl get all
kubectl get service

9. Open the mongo express service

minikube service mongo-express-service

This is will generate the URL to access the mongo express service at the assigned nodePort (which is 30001 in this case).

10. Open the URL in your browser and you will see the mongo express UI.

My outputs

• Created the secret:

  $ kubectl apply -f mongo-secret.yaml
  secret/mongo-secret created

• Confirmed using:

  $ kubectl get secret                
  NAME           TYPE     DATA   AGE
  mongo-secret   Opaque   2      15s

• Creating the mongodb deployment

  $ kubectl apply -f mongo.yaml       
  deployment.apps/mongo-deployment created

• Confirmed using:

  $ kubectl get pod         
  NAME                                READY   STATUS    RESTARTS   AGE
  mongo-deployment-845bcbf466-8v6bd   1/1     Running   0          48s

• Creating the internal service

  $ kubectl apply -f mongo.yaml
  deployment.apps/mongo-deployment unchanged
  service/mongodb-service created

Similarly Created the configmap and the mongo express pod and the external service.

• configmap:

  $ kubectl apply -f mongo-configmap.yaml
  configmap/mongodb-configmap created

• Mongo express pod:

  $ kubectl apply -f mongo-express.yaml  
  deployment.apps/mongo-express created

• External service:

  $ kubectl apply -f mongo-express.yaml    
  deployment.apps/mongo-express unchanged
  service/mongo-express-service created

Finally, opening the mongo express external service using minikube

minikube service mongo-express-service
|-----------|-----------------------|-------------|---------------------------|
| NAMESPACE |         NAME          | TARGET PORT |            URL            |
|-----------|-----------------------|-------------|---------------------------|
| default   | mongo-express-service |        8081 | http://192.168.49.2:30001 |
|-----------|-----------------------|-------------|---------------------------|
🎉  Opening service default/mongo-express-service in default browser...

The final service looks like this: