## Hosting a MongoDB and creating accounts for application in it

1. Docker Compose is only for creating `root` account in db `admin`, this is not the database for application
2. Create Application specific accounts and set the authentication details

     2.1 Login to MongoDB using root credentials and use below syntax to create application specific account and the database

     2.2 Application should use its own DB and Credentials

### Syntax for creating an account for application

> PS: You have to be in the database for which you are creating the credentials

```shell
use <application db name>
db.createUser({user: "<application db username>", pwd: "<application db pwd>", roles: ["readWrite", "dbAdmin"]});
```

Eg:

```shell
use sampleapp
db.createUser({user: "myuser", pwd: "mypwd", roles: ["readWrite", "dbAdmin"]});
```

You can use docker compose like below to host a DB

```yaml
version: '3.1'

services:

  mongo:
    image: mongo:latest
    restart: always
    ports:
      - 27017:27017
    environment:
      MONGO_INITDB_ROOT_USERNAME: root
      MONGO_INITDB_ROOT_PASSWORD: example
```

You can use this command to login to admin account, which will prompt for password

```shell
mongo --host <whatever is the hostname> -u root --password --authenticationDatabase admin
```