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 quick start or build a chain tutorial, which covers installing the rollkit CLI, building your chain, 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:

curl -sSL https://rollkit.dev/install-local-da.sh | bash -s v0.3.1

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

Configuring your rollup to connect to the local DA network

To connect your rollup to the local DA network, you need to pass the --rollkit.da_address flag with the local DA node address.

Run your rollup

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

Quick Start

rollkit start --rollkit.da_address http://localhost:7980

Wordle Chain

rollkit start \
    --rollkit.aggregator \
    --rollkit.da_address http://localhost:7980 \
    --rollkit.sequencer_rollup_id wordle

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

I[2024-11-15|14:54:19.842] DA server is already running                 module=main address=http://localhost:7980

Summary

By following these steps, you will set up a local DA network node and configure your rollup to post data to it. This setup is useful for testing and development in a controlled environment.