Dockerization an express app and mongodb

Running the app

rename or copy .env.example to .env

Note:
you need to change the db connection on server.js before exec this command
see "Local Connect" on .env.example

whoam@i$ docker-compose up

whoam@i$ docker-compose up --build OR
whoam@i$ docker-compose build

Note:
you need to change the db connection on server.js before exec this command
see "Kubernetes Deployment" on .env.example

on secret.example.yaml
- encode your key value by exec "echo -n yourValue | base64" replace the output to ENCRYPTED_USERNAME
- do exactly the same to replace ENCRYPTED_PASSWORD
- now, you R ready to apply secret.example.yaml (you can rename it)
after that, you can apply mongodb-deployment.yaml, mongo ready to use
login to mongo using the value of MONGO_USERNAME and MONGO_PASSWORD before you encode it

secure your mongodb keyfile

whoam@i$ openssl rand -base64 741 > resources/secret/mongodb-keyfile

create kubernetes secret with the mongodb keyfile you just create

whoam@i$ kubectl create secret generic mongo-key --from-file=resources/secret/mongodb-keyfile

now you R ready to apply resources/kubernetes/mongodb-statefulset.yaml
wait until all the 3 pods R running
- define replica set in mongo bash in the running pod
  - by execute "kubectl exec -it mongod-0 -- bash" you can acces the pod bash
  - in pod bash, login to mongo, by execute "mongo -u root -p developer"
  - execute this command to make your own replica set with your own host
```
rs.initiate({
  _id: 'MainRepSet',
  version: 1,
  members: [
    { _id: 0, host: 'mongod-0.mongodb-service:27017' },
    { _id: 1, host: 'mongod-1.mongodb-service:27017' },
    { _id: 2, host: 'mongod-2.mongodb-service:27017' }
  ]
})
```
  - rs.status() to see if there is primary replica set, if not
  - exec "rs.slaveOk() || rs.secondaryOk()" to make host mongod-0.mongodb-service:27017 as primary
    - depend on which pod you are accessing the mongo bash
after that you can run this application on kubernetes by apply kubernetes/deploy-app.yaml
- wait until this app's pod is running
Done, the application is running on port 30001

http://localhost:3000/ for health-check
OR
http://localhost:30001/ if running on kubernetes

see .env.example for more details

see src/routes/router.js for endpoints list

you can also pull/run(as container) the image for this project on : https://hub.docker.com/r/200140/docker-node-mongo

⚠️ DEPRECATED
Make your own image instead...
Just change the config
- rebuild the image and register your image on your own docker hub account
- don't forget to change the container image on deploy-app.yaml with the image you just registered before you apply