Using the AWS Command Line

April 22, 2021 1 minute read

How To Install

To install:

$ sudo apt install awscli

How To Get Credentials

When running from EC2, the credentials are automatically provided as a part of your IAM role.

When running from a local machine, there are a few steps you need to take before you can access your S3 bucket.

Create an Access Key

Go to te IAM service on the AWS console (Integrated Access Management)
Navigate to Access Management –> Users (using the navigation bar on the left)
Select the Security credentials tab
Click on the Create access key button
- This will give you an Access Key and a Secret Access Key
- You will need these keys in the future so make sure to keep the window up until these directions are completed

Obtain your MFA ARN

While still in the IAM console, under the same ** Security credentials** tab, locate the Sign-in credentials section.
Copy down the Assigned MFA device id, it will look some like: arn:aws:iam::12341234123:mfa/user

Configure your local machine

Configure your local credentials by going to a command prompt and running: aws configure
- Copy and paste your Access Key when prompted
- Copy and paste your Secret Access Key when prompted
- Enter us-west-2 for the region
- Enter json for the output
Obtain a temporary token by running: aws sts get-session-token --serial-number <Assigned MFA device> --token-code <token>
- The Assigned MFA device is the id copied down above
- The token is the MFA token (e.g. Google Authenticator) used to sign into the AWS console

The output of the command above will provide temporary credentials (for 12 hours):

{
 "Credentials": {
     "SecretAccessKey": "secret-access-key",
     "SessionToken": "temporary-session-token",
     "Expiration": "expiration-date-time",
     "AccessKeyId": "access-key-id"
 }
}

Using the values provided, export those credentials to your local shell environemnt:

$ export AWS_ACCESS_KEY_ID=<access-key-id>
$ export AWS_SECRET_ACCESS_KEY=<secret-access-key>
$ export AWS_SESSION_TOKEN=<temporary-session-token>

Make sure that if you run the get-session-token command again that the exported variables above are _not set.

How To List S3 Files

$ aws s3 ls s3://icesat2-sliderule/<path_to_subdirectory>/

How To Upload Files to S3

$ aws s3 cp <path_to_local_file> s3://icesat2-sliderule/<path_to_subdirectory>/

How To List Multipart Uploads

$ aws s3api list-multipart-uploads --bucket icesat2-sliderule

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