Database Backup Service

A Node.js application that continuously runs and creates backups of an MSSQL database, then uploads them to Amazon S3.

Features

Automatically backs up MSSQL database using T-SQL backup commands
Uploads backup files to Amazon S3
Runs continuously with scheduled backups
Configurable backup interval

Prerequisites

Node.js (v14 or higher recommended)
Access to an MSSQL database server
AWS S3 bucket and credentials

Setup

Clone this repository
Install dependencies:
```
npm install
```
Configure environment variables: Copy the .env.example file to .env and fill in your credentials:
```
cp .env.example .env
```
Then edit the .env file with your actual credentials:
- AWS_ACCESS_KEY_ID: Your AWS access key ID
- AWS_SECRET_ACCESS_KEY: Your AWS secret access key
- AWS_REGION: Your AWS region (e.g., us-east-1)
- S3_BUCKET_NAME: Your S3 bucket name

MSSQL_SERVER: Your MSSQL server address
MSSQL_PORT: Your MSSQL server port (default: 1433)
MSSQL_USER: Your MSSQL username
MSSQL_PASSWORD: Your MSSQL password
MSSQL_DATABASE: Your database name (default: eazybusiness)
BACKUP_FILE_PATH: Path where backup file is created on MSSQL server (default: F:\ez.bak)
SMB_ADDRESS: Your SMB share address (e.g., //server/share)
SMB_USERNAME: Your SMB username
SMB_PASSWORD: Your SMB password
SMB_DOMAIN: Your SMB domain (optional)
SMB_LOCAL_DOWNLOAD_PATH: Local path to download backup files (default: ./downloads)

Running the Application

Start the backup service:

npm start

For development with auto-restart:

npm run dev

How It Works

The application connects to your MSSQL database using the provided credentials
It executes a T-SQL backup command to create a backup file on the MSSQL server
The backup file is downloaded from the SMB share to a local directory
The local backup file is then uploaded to your specified S3 bucket
This process repeats every 24 hours (configurable in the code)

Configuration

The backup interval can be adjusted in index.js by modifying the setInterval parameter:

// Currently set to 24 hours (86400000 milliseconds)
setInterval(runBackupProcess, 86400000);

File Path Note

The backup file is created on the MSSQL server at the path specified by BACKUP_FILE_PATH environment variable (default: F:\ez.bak). Make sure this path is accessible on your MSSQL server and has appropriate permissions.

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