How to create a DynamoDB Global table from an existing table

Question : How can I create a DynamoDB Global table from an existing table using AWS CLI ?

Answer:    For this example , we'll use 2 regions - us-east-1 and us-west-2.   

The goal is to create a DynamoDB Global table   - 

1) Create a new DynamoDB table in one region - (us-east-1).

aws dynamodb create-table \
       --table-name Guitarist \
        --attribute-definitions  \
        AttributeName=Name,AttributeType=S \
        AttributeName=Style,AttributeType=S \
        --key-schema \
        AttributeName=Name,KeyType=HASH \
        AttributeName=Style,KeyType=RANGE \
        --billing-mode PAY_PER_REQUEST \
        --stream-specification StreamEnabled=true,StreamViewType=NEW_AND_OLD_IMAGES \
        --region us-east-1

2)  Create an the same table but in another region (us-west-2)

aws dynamodb update-table --table-name Guitarist --cli-input-json  \
'{
  "ReplicaUpdates":
  [
    {
      "Create": {
        "RegionName": "us-west-2"
      }
    }
  ]
}' \
--region=us-east-1

3) Check that the newly create replica in us-west-2  exists   

aws dynamodb describe-table --table-name Guitarist --region us-east-1

4) Add some data , and check if the replication is working between the the two replicas

aws dynamodb put-item 
    --table-name Guitarist \
    --item '{"Name": {"S":"Hendrix"},"Style": {"S":"Rock"}}' \
    --region us-east-1




--Give it a few seconds and the check the data 

aws dynamodb scan --table-name Guitarist --region us-west-2

5) As an added test - add some data to the alternative region  and then check to see if the data is replicated back to us-east-1 

aws dynamodb put-item 
    --table-name Guitarist \
    --item '{"Name": {"S":"Metheny"},"Style": {"S":"Jazz"}}' \
    --region us-west-2




--Give it a few seconds and the check the data 

aws dynamodb scan --table-name Guitarist --region us-east-1

See Also 

How do I backup my DynamoDB table to another region with AWS Backup?

Amazon DynamoDB Backup & Restore

What is DynamoDB and how it works?