Creating S3 buckets in AWS - Step-by-Step CLI Walkthrough

Introduction

Sometimes you need a place to store files safely on the internet. Creating an S3 bucket in AWS gives you a folder in the cloud where you can keep your files organized and accessible.

When you want to save backups of your important documents online.

When you need to host images or videos for your website.

When you want to share files with your team securely.

When you want to store logs or data from your applications.

When you want a simple way to archive files without using your computer's storage.

Commands

This command creates a new S3 bucket named 'example-bucket-12345' in the US East (N. Virginia) region. The bucket is where you will store your files.

Terminal

aws s3api create-bucket --bucket example-bucket-12345 --region us-east-1

Expected Output

{"Location": "/example-bucket-12345"}

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--bucket - Specifies the unique name of the bucket you want to create.

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--region - Specifies the AWS region where the bucket will be created.

This command lists all the S3 buckets in your AWS account so you can confirm that your new bucket was created successfully.

Terminal

aws s3api list-buckets

Expected Output

{"Buckets": [{"Name": "example-bucket-12345", "CreationDate": "2024-06-01T12:00:00.000Z"}], "Owner": {"DisplayName": "user", "ID": "abc123"}}

This command checks the region where your bucket is located to make sure it matches your intended location.

Terminal

aws s3api get-bucket-location --bucket example-bucket-12345

Expected Output

{"LocationConstraint": null}

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--bucket - Specifies the bucket name to check its location.

Key Concept

If you remember nothing else from this pattern, remember: an S3 bucket is a unique folder in the cloud where you store your files, and you create it with a unique name and region.

Common Mistakes

Using a bucket name that is already taken by someone else.

Bucket names must be unique across all AWS users worldwide, so the creation will fail if the name is not unique.

Choose a bucket name that is unique by adding random numbers or your company name.

Not specifying the region when creating a bucket in regions other than us-east-1.

AWS requires the region flag for buckets outside the default region, or the bucket may be created in an unintended region.

Always include the --region flag with the correct region code when creating buckets.

Summary

Use 'aws s3api create-bucket' with a unique name and region to create a new S3 bucket.

Use 'aws s3api list-buckets' to see all your buckets and confirm creation.

Use 'aws s3api get-bucket-location' to verify the bucket's region.