docs: full node guide (#462)

* Full node, before refining

* Rewording

* use bash instead of toml code block

* update overview

* Add comments on moniker, jsonrpc and api ports, and tip on data dir

Author: yarikbratashchuk

.vitepress/config.ts

@@ -283,8 +283,8 @@ function sidebarHome() {
           link: "/guides/restart-rollup",
         },
         {
-          text: "Run as a full and sequencer node",
-          link: "/guides/full-and-sequencer-node",
+          text: "Run a rollup full node",
+          link: "/guides/full-node",
         },
         {
           text: "Configuration",

guides/full-and-sequencer-node.md

@@ -0,0 +1,91 @@
+# Rollup Full Node Setup Guide
+
+## Introduction
+
+This guide covers how to set up a full node to run alongside a sequencer node in a Rollkit-based blockchain network. A full node maintains a complete copy of the blockchain and helps validate transactions, improving the network's decentralization and security.
+
+## Prerequisites
+
+Before starting, ensure you have:
+
+- A local Data Availability (DA) network node running on port `7980`.
+- A Rollkit sequencer node running and posting blocks to the DA network.
+- The Rollkit CLI installed on your system.
+
+## Setting Up Your Full Node
+
+### Initialize Chain Config and Copy Genesis File
+
+First, update the `config_dir` in the `rollkit.toml` file:
+
+```bash
+[chain]
+  config_dir = "/root/.yourrollupd" // [!code --]
+  config_dir = "/root/.yourrollupd_fn" // [!code ++]
+```
+
+Initialize the chain config for the full node, lets call it `FullNode` and set the chain ID to your rollup chain ID:
+
+```bash
+rollkit init FullNode --chain-id=your-rollup-chain-id
+```
+
+Copy the genesis file from the sequencer node:
+
+```bash
+cp /root/.yourrollupd/config/genesis.json /root/.yourrollupd_fn/config/genesis.json
+```
+
+### Set Up P2P Connection to Sequencer Node
+
+Identify the sequencer node's P2P address from its logs. It will look similar to:
+
+```
+1:55PM INF listening on address=/ip4/127.0.0.1/tcp/36656/p2p/12D3KooWJbD9TQoMSSSUyfhHMmgVY3LqCjxYFz8wQ92Qa6DAqtmh
+```
+
+Create an environment variable with the P2P address:
+
+```bash
+export P2P_ID="12D3KooWJbD9TQoMSSSUyfhHMmgVY3LqCjxYFz8wQ92Qa6DAqtmh"
+```
+
+### Start the Full Node
+
+Run your full node with the following command:
+
+```bash
+rollkit start --rollkit.aggregator=false \
+  --rollkit.da_address http://127.0.0.1:7980 \
+  --rpc.laddr tcp://127.0.0.1:46657 \
+  --grpc.address 127.0.0.1:9390 \
+  --p2p.seeds $P2P_ID@127.0.0.1:26656 \
+  --p2p.laddr "0.0.0.0:46656" \
+  --json-rpc.ws-address 127.0.0.1:8547 \
+  --api.address tcp://localhost:1318
+```
+
+Key points about this command:
+- `--rollkit.aggregator=false` indicates this is not an aggregator node.
+- The ports and addresses are different from the sequencer node to avoid conflicts. Not everything may be necessary for your setup.
+- We use the `P2P_ID` environment variable to set the seed node.
+
+## Verifying Full Node Operation
+
+After starting your full node, you should see output similar to:
+
+```
+2:33PM DBG indexed transactions height=1 module=txindex num_txs=0
+2:33PM INF block marked as DA included blockHash=7897885B959F52BF0D772E35F8DA638CF8BBC361C819C3FD3E61DCEF5034D1CC blockHeight=5532 module=BlockManager
+```
+
+This output indicates that your full node is successfully connecting to the network and processing blocks.
+
+:::tip
+If your rollup uses EVM as an execution layar and you see an error like `datadir already used by another process`, it means you have to remove all the state from rollup data directory (`/root/.yourrollup_fn/data/`) and specify a different data directory for the EVM client.
+:::
+
+
+## Conclusion
+
+You've now set up a full node running alongside your Rollkit sequencer.

guides/full-node.md

@@ -17,7 +17,7 @@ In this section, you'll find:
 * [How to restart your rollup](/guides/restart-rollup.md)
 * [zkML rollup](/guides/zkml.md)
 * [IBC connection](/guides/ibc-connection.md)
-* [Full and sequencer node rollup setup](/guides/full-and-sequencer-node.md)
+* [Full rollup node setup](/guides/full-node.md)
 * [How to configure gas price](/guides/gas-price.md)
 * [How to change speed of block production](/guides/block-times.md)
 * [How to use lazy sequencing (aggregation)](/guides/lazy-sequencing.md)