First, you need to extract the data from Metabase. Log in to Metabase and navigate to the dataset or query whose data you want to export. Use the built-in export functionality to download the data in a CSV format. This is typically done by running your query and then using the "Download CSV" option from the Metabase interface.

Set up a local environment where you'll handle data processing. Ensure you have Python installed on your machine, as we'll use it to automate the uploading process. If not installed, download and install Python from the official website. Additionally, install the AWS SDK for Python (Boto3) using pip: `pip install boto3`.

Install and configure the AWS Command Line Interface (CLI) to interact with AWS services. Download the AWS CLI from the official AWS website and follow the installation instructions. Once installed, configure it using `aws configure` and enter your AWS Access Key, Secret Key, default region, and output format.

Log in to your AWS Management Console and navigate to the S3 service. Click on "Create Bucket" and follow the prompts to create a new S3 bucket where you will store the data exported from Metabase. Make sure to choose a unique bucket name and configure permissions appropriately to allow data uploads.

Create a Python script to automate the data upload to S3. Use Boto3 to write a function that uploads the CSV file to your S3 bucket. Here�s a basic example:

```python
import boto3
from botocore.exceptions import NoCredentialsError

def upload_to_s3(file_name, bucket, object_name=None):
# If S3 object_name was not specified, use file_name
if object_name is None:
object_name = file_name

# Upload the file
s3_client = boto3.client('s3')
try:
response = s3_client.upload_file(file_name, bucket, object_name)
except FileNotFoundError:
print("The file was not found")
return False
except NoCredentialsError:
print("Credentials not available")
return False
return True

# Example usage
upload_to_s3('data.csv', 'your-s3-bucket-name')
```

Run your Python script to upload the CSV file to the S3 bucket you created. Ensure that the file path and bucket name in the script are correct. Once executed, check your S3 bucket to confirm the file has been uploaded successfully.

Now that the data is in S3, you can configure AWS Glue to access it. In the AWS Management Console, navigate to AWS Glue and create a new Crawler. Set the S3 bucket location as the data source. Follow the prompts to configure the crawler and define the schema. Run the crawler to catalog the data, making it available for further ETL processes in AWS Glue.

By following these steps, you can effectively move data from Metabase to S3 and prepare it for use with AWS Glue without relying on third-party connectors or integrations.