dynamo db local shell doesn't list tables using docker image

Question

I am using docker enabled dynamoDB local as mentioned here

and following is my JS code:

AWS.config.update({
  region: 'sas',
  endpoint:  'http://docker.for.mac.host.internal:8000' //'http://localhost:8000'
});

and create table function below:

function createTable() {
    let params = {
        TableName: 'sas',
        KeySchema: [{
            AttributeName: 'title',
            KeyType: 'HASH',
        }],
        AttributeDefinitions: [{
            AttributeName: 'title',
            AttributeType: 'S'
        }],
        ProvisionedThroughput: {
            ReadCapacityUnits: 1,
            WriteCapacityUnits: 1,
        }
    };
    dynamoDB.createTable(params, function(err, data) {
        if (err)
            console.log(err); // an error occurred
        else
            console.log(data);
    });
}   

i could see created table sas using cli :

aws dynamodb list-tables --endpoint-url http://localhost:8000 --region=sas  

but NOT listing the table in the and it's always empty.

http://localhost:8000/shell/

any idea's?

NOTE: i can see my table with above code, by running dynamodb jar locally

 java -Djava.library.path=./DynamoDBLocal_lib -jar DynamoDBLocal.jar -sharedDb 

Ebonieebonite

for me, what did the trick was to check the region in my .aws\config file and set it the same as the one you mention in your JS code - sas (for me it is set to eu-west-2), maybe it helps someone ... – Surpass

Answer 1

make sure you are also passing -sharedDb to the docker image.

If -sharedDb is not present then dynamodb-local will use
access keys+region as namespaces to separate tables
(as if they were under different aws accounts)

Ethelda

It wouldn't work for me by just adding -sharedDb to the Docker run command. I had to use docker run -p 8000:8000 amazon/dynamodb-local -jar DynamoDBLocal.jar -sharedDb – Ventage

@andyberry88 great, this finally worked! Also don't forget you have to re-create the tables after you first started with -sharedDb. – Roughneck

I was trying to do it with docker-compose instead but couldn't find a way to have the tables listed in the /shell. Running it with docker directly worked. – Spiderwort

I was able to do it with docker compose. I overrode the command like this: command: -jar DynamoDBLocal.jar -sharedDb – Catcall

Answer 2

As @Mendhak points out in the comments on another answer here, if you are using docker-compose, you will need to share the db, which you can do by overriding the command in docker-compose.yml

version: "3.7"
services:
  dynamodb-local:
    image: amazon/dynamodb-local:latest
    container_name: dynamodb-local
    ports:
      - "8000:8000"
    command: -jar DynamoDBLocal.jar -sharedDb

I didn't see this anywhere in the sprawling AWS docs, so I wanted to leave this answer to improve visibility for other wandering devs.

Credit to Mendhak - you could upvote his comment as well as this answer, if it helped you!

Waxwork

Answer 3

You can specify -sharedDb param when start docker dynamodb.

docker run -itd -p 8000:8000  --name dev-db amazon/dynamodb-local:latest -jar DynamoDBLocal.jar -sharedDb

Halide