DynamoDB Local - Connection Refused from PHP - php

Question

I am running DynamoDB Local on port 8080. This is the command used to start the DB:
java -Djava.library.path=./DynamoDBLocal_lib -jar DynamoDBLocal.jar -port 8080
Going to localhost:8080/shell/ yields the DynamoDB Javascript Shell. The shell works and allows operations to be performed on a local db file. The db file created by using the shell is named cUniqueSessionID_us-west-2.db.
In a PHP project, I have the following code for creating a table using DynamoDB
$db = new \Aws\DynamoDb\DynamoDbClient([
'region' => 'us-west-2',
'version' => 'latest',
'endpoint' => 'http://localhost:8080/',
'credentials' => [
'key' => 'not-a-real-key',
'secret' => 'not-a-real-secret',
],
]);
$db->createTable([
'TableName' =>'SampleTable',
'AttributeDefinitions' => [
[ 'AttributeName' => 'Id', 'AttributeType' => 'N' ]
],
'KeySchema' => [
[ 'AttributeName' => 'Id', 'KeyType' => 'HASH' ]
],
'ProvisionedThroughput' => [
'ReadCapacityUnits' => 5,
'WriteCapacityUnits' => 6
]
]);
But running this yields Error executing "CreateTable" on "http://localhost:8080/"; AWS HTTP error: cURL error 7: Failed to connect to localhost port 8080: Connection refused
I've tried turning off my firewall without success. What could be causing this error?

Answer 1

I found the issue.
My PHP project is running in a Vagrant virtual machine, but I was running DynamoDB on my local machine. Thus, the localhost in my PHP code refered to the vagrant localhost but DynamoDB was running on my machine's localhost.
To solve the problem, I ran DynamoDB from within Vagrant.