Full and sequencer node rollup setup ​

This guide will cover how to set up the GM world rollup example as a multi-node network using a full and sequencer node.

About ​

This guide is using a feature released in v0.10.2 that uses go-header, which uses libp2p that syncs blocks over a peer-to-peer (p2p) network.

This is the same way that celestia-node syncs blocks over p2p.

Prerequisites ​

First, you'll need to complete the GM world tutorial.

In this demo, we'll be using the local-celestia-devnet setup used in part 1.

Getting started ​

For running a full node, you will need to update DA_HEIGHT and P2P_ID manually. You can retrieve namespace and height from your terminal output from when you ran the init-local.sh script.

They will be printed before your chain starts:

______         _  _  _     _  _
| ___ \       | || || |   (_)| |
| |_/ /  ___  | || || | __ _ | |_
|    /  / _ \ | || || |/ /| || __|
| |\ \ | (_) || || ||   < | || |_
\_| \_| \___/ |_||_||_|\_\|_| \__|


 Your DA_BLOCK_HEIGHT is 5 

Clone the script ​

Now, clone the script for the full node:

# From inside the `gm` directory
cd $HOME/gm
wget https://raw.githubusercontent.com/rollkit/docs/main/scripts/gm/init-full-node.sh

Set DA height ​

Next, you can open the script and set your namespace and DA height from above:

DA_BLOCK_HEIGHT=your-block-height 
DA_BLOCK_HEIGHT=5 
P2P_ID="your-p2p-id"

Update the p2p address ​

Next, we'll update the p2p address.

Once your sequencer starts producing blocks, it will show the p2p address, beginning with 12D:

3:55PM INF port binded module=x/ibc/port port=icahost
3:55PM INF claimed capability capability=2 module=icahost name=ports/icahost
3:55PM INF service start impl=RPC module=server msg={}
3:55PM INF service start impl=Node module=server msg={}
3:55PM INF starting P2P client module=server
3:55PM INF serving HTTP listen address={"IP":"127.0.0.1","Port":36657,"Zone":""} module=server
3:55PM INF listening on address=/ip4/10.0.0.171/tcp/36656/p2p/12D3KooWCmfJLkQjZUArWpNUDJSezeFiLYzCULXe1dEKY6ZpXZpk module=p2p 
3:55PM INF listening on address=/ip4/127.0.0.1/tcp/36656/p2p/12D3KooWCmfJLkQjZUArWpNUDJSezeFiLYzCULXe1dEKY6ZpXZpk module=p2p 
3:55PM INF no seed nodes - only listening for connections module=p2p
3:55PM INF starting Celestia Data Availability Layer Client baseURL=http://localhost:26658 module=da_client

In your init-full-node.sh script, you will now set the P2P_ADDRESS variable for your script to use:

DA_BLOCK_HEIGHT=5
P2P_ID="your-p2p-id" 
P2P_ID="12D3KooWCmfJLkQjZUArWpNUDJSezeFiLYzCULXe1dEKY6ZpXZpk" 

Also, in your init-full-node.sh script, the AUTH_TOKEN is fetched from the celestia-node running in the docker, which is also used by the sequencer node. If you are running a separate celestia-node for sequencer and full node, please update the AUTH_TOKEN accordingly. Note that, the AUTH_TOKEN is needed to perform DA queries via celestia-node.

# uses the same celestia-node as sequencer node
# if you are running a separate celestia-node for full node
# use the auth token from that node
AUTH_TOKEN=$(docker exec $(docker ps -q) celestia bridge auth admin --node.store /home/celestia/bridge)

Start the full node ​

Now run your full node with the script:

# from the gm directory
bash init-full-node.sh

Congratulations! You will now have a full node running alongside your Rollkit sequencer.