AWS S3 Presigned URL

1. Listing all buckets

  - aws s3 ls

 

2. Creating a bucket in AWS CLI

  - aws s3api create-bucket --bucket jongwoo-presigned-test-bucket

  - It is also possible to set the region of our choice but it is not necessary since the bucket is in global region.

 

3. Uploading a file to the bucket

  - aws s3api put-object --bucket jongwoo-presigned-test-bucket --key test-presigned.txt --body /home/jongwoo/text.txt

  - '--bucket' specifies the name of the bucket.

  - '--key' specifies the name to save. This is the name which will be appeared in the bucket.

  - '--body' specifies the location of the file you want to upload.

 

4. Creating a presigned url from a file

  - aws s3 presign s3://jongwoo-presigned-test-bucket/test-presigned.txt --expires-in 10

  - '--expires-in <seconds>' specifies the duration of time in seconds of validity.

 

5. Testing the validity of presigned url

  - curl 'https://jongwoo-presigned-test-bucket.s3.amazonaws.com/test-presigned.txt?AWSAccessKeyId=AKIA4IZ7JCWZMBQB5MOM&Signature=NWyJ3PMJGpeped7cYxPF9gKw060%3D&Expires=1641938906'

  - curl '<presigned url'>

  - It is also possible to test by directly copying and pasting the url to the chrome. It will download the file if it is valid in duration.