Using Local DA

Introduction

This tutorial serves as a comprehensive guide for using the local-da with your chain.

Before proceeding, ensure that you have completed the build a chain tutorial, which covers setting-up, building and running your chain.

Setting Up a Local DA Network

To set up a local DA network node on your machine, run the following script to install and start the local DA node:

go install github.com/evstack/ev-node/tools/local-da@latest

This script will build and run the node, which will then listen on port 7980.

Configuring your chain to connect to the local DA network

To connect your chain to the local DA network, you need to pass the --evnode.da.address flag with the local DA node address.

Run your chain

Start your chain node with the following command, ensuring to include the DA address flag:

Quick Start

testapp start --evnode.da.address http://localhost:7980

gm-world Chain

testapp start \
    --evnode.node.aggregator \
    --evnode.da.address http://localhost:7980 \

You should see the following log message indicating that your chain is connected to the local DA network:

11:07AM INF NewLocalDA: initialized LocalDA module=local-da
11:07AM INF Listening on host=localhost maxBlobSize=1974272 module=da port=7980
11:07AM INF server started listening on=localhost:7980 module=da

Summary

By following these steps, you will set up a local DA network node and configure your chain to post data to it. This setup is useful for testing and development in a controlled environment. You can find more information in the local-da README