Dynamo Discovery Service

Discovery service like etcd but implemented with DynamoDB

Installation (not yet available)

$ npm install -g dds-cli

Introduction

At the AWS Summit in Amsterdam I spoke with @sebsto regarding service discovery. I asked him if etcd is a good fit. Besides it probably is a good fit, he came up with an alternative idea. What if etcd fails because the nodes can't find each other?

The idea is to use DynamoDB to keep track of the services. The downside is the extra code you have to write for each service. This repo will try to tackle that.

CLI

Configuration

First of all, you need to create a dds user in the AWS portal. This user can interact with the DynamoDB database in order to store and retrieve services from the database.

Go to AWS -> Identity and Access Management. Create a new user with the name dds and use those credentials to configure the dds service.

TODO: Add policy

In order for the service to store and read services from the DynamoDB database, you need to configure the credentials of the dds user and the region.

$ dds configure --accessKeyId <key> --secretAccessKey <secret> --region us-west-1

Store service

To store a service in the database, you can use the following commands.

$ dds set mongo --host 10.9.128.3 --port 4444 --version 1.2

Author

• Sam Verschueren [sam.verschueren@gmail.com]

License

MIT © Sam Verschueren