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S3 Complete Tutorials in AWS

 

1. Introduction to S3

  • What is S3?
    Amazon Simple Storage Service (S3) is a cloud-based storage service. You can use it to store any type of data, like documents, images, or videos.

  • Key Features of S3:

    • Scalable: Handles any amount of data.
    • Secure: Supports encryption and access controls.
    • Durable: Stores multiple copies across regions.
    • Accessible: Access data via HTTP/HTTPS protocols.

  • Use Cases:

    • Backup and Restore
    • Storing static website files (HTML, CSS, JavaScript)
    • Hosting media files for apps or websites

2. How to Create an S3 Bucket

An S3 bucket is like a folder to store data. Let’s create one!

  1. Login to AWS Console: Open https://aws.amazon.com.
  2. Search for "S3" in the search bar and open the service.
  3. Create Bucket:
    • Click Create Bucket.
    • Enter a bucket name (must be unique across AWS).
    • Select the Region where the data will be stored.
    • Block Public Access: Choose whether the bucket is private or public.
  4. Leave Defaults: Keep other settings as they are for now.
  5. Click "Create Bucket".

3. Upload Files to S3 Bucket

  1. Go to the Buckets list and click on your new bucket.
  2. Click Upload and select a file from your computer.
  3. Click Upload to save the file to the bucket.

4. Versioning in S3

  • What is Versioning?
    Versioning keeps multiple versions of an object. If you upload the same file multiple times, all versions are kept safely.
  1. Open your S3 bucket and go to the Properties tab.
  2. Find Versioning and click Edit.
  3. Enable Versioning and save changes.
  • Practical Example:
    • Upload a file called index.html.
    • Modify the file and upload it again.
      Now, both versions are stored. You can restore any version later!

How to ACCESS storage files of buckets:

`1) How  to access buckets file provide object accessbility to add following bucket policy.

{ "Version": "2012-10-17", "Statement": [ { "Effect": "Allow", "Principal": "*", "Action": "s3:GetObject", "Resource": "arn:aws:s3:::your-bucket-name/*" } ] }

It provide global accessbility to access the specific file.


How to access multiple files in same bucket:

{ "Version": "2012-10-17", "Statement": [ { "Effect": "Allow", "Principal": "*", "Action": ["s3:GetObject","s3:GetObjectVersion"], "Resource":
["arn:aws:s3:::myawspracticeindore/salesforce-resume-sample.pdf",
"arn:aws:s3:::myawspracticeindore/1746511118711.jpeg"] } ] }

2) `How  to access buckets file with versioning and  provide old object accessbility to edit following bucket policy.

{ "Version": "2012-10-17", "Statement": [ { "Effect": "Allow", "Principal": "*", "Action": ["s3:GetObject","s3:GetObjectVersion"], "Resource": "arn:aws:s3:::your-bucket-name/*" } ] }

It provide global accessbility to access the specific file.

5. Deploying a Static Website on S3

You can use S3 to host simple websites without a web server!

  1. Upload Your Website Files:

    • Create a simple HTML file (e.g., index.html).
    • Upload it to your bucket.

  2. Enable Static Website Hosting:

    • Go to your bucket, open Properties.
    • Scroll to Static Website Hosting and enable it.
    • Choose Use this bucket to host a website.
    • Set index.html as the default page.
    • Save the settings.

  3. Make Files Public:

    • Go to Permissions → Bucket Policy.
    • Paste the following policy to allow public access:
      json

      {
  "Version": "2012-10-17",
  "Statement": [
    {
      "Effect": "Allow",
      "Principal": "*",
      "Action": "s3:GetObject",
      "Resource": "arn:aws:s3:::your-bucket-name/*"
    }
  ]
}
    • Replace your-bucket-name with your actual bucket name.
    • Save the policy.

  4. Access Your Website:

    • Go back to Static Website Hosting and copy the Endpoint URL.
    • Open it in your browser to see your website live!

6. Other Key S3 Concepts

Lifecycle Policies

  • Automate moving files to cheaper storage classes (like Glacier) after a certain time.

Storage Classes

  • Standard: Used for frequent access.
  • Glacier: Used for long-term storage, cheaper but slower.

S3 Security & Permissions

  • IAM Policy: Controls who can access S3 resources.
  • Bucket Policy: Allows or denies access to all objects in a bucket.

S3 Logging and Monitoring

  • CloudTrail: Tracks all activities related to your bucket.
  • CloudWatch: Monitors S3 performance.

7. Hands-on Example: Upload, Version, and Host a Website

  1. Create a bucket and enable versioning.
  2. Upload files, modify them, and see versions.
  3. Host a website using your bucket and share the public URL.




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