Deploy a rollup node

Learn how to run a node for the B2.

System Requirements

hardware requirements

CPUs: 16 vCPUs
RAM: 32 GB
Storage: 1 TB NVMe Storage
100MBps bidirectional internet connection

You can run B2 on lower-spec hardware, but you may find that it is not highly performant or prone to crashing.

software requirements

OS：As long as Docker Engine can be installed, the operating system will suffice.

Pre-install

Install Docker

Please refer to the Install Docker Engine

Install Docker-compose

Please refer to the Install Docker Compose

Download Snapshot Data

Below is the releated files

Snapshot Data	Size	Download Link	sha256sum
2024-07-02	8.01G	Mirror	5765e3286b74cda1446c9c2464fc6849c42c8ad63f2131f386be0ff6552c2ada
2024-06-14	4.0K	rollup.json	f54528da6468e0d72b2b8623a3ab87ed509b9910c3109a059c8dc143a1b34b8a
2024-06-14	9.0M	genesis.json	fc5aba6864a1123a5f2104283d90ab412238f7abb556d147913f0d990fff7011

Snapshot Data

Size

Download Link

sha256sum

2024-07-02

8.01G

Mirror

5765e3286b74cda1446c9c2464fc6849c42c8ad63f2131f386be0ff6552c2ada

2024-06-14

4.0K

rollup.json

f54528da6468e0d72b2b8623a3ab87ed509b9910c3109a059c8dc143a1b34b8a

2024-06-14

9.0M

genesis.json

fc5aba6864a1123a5f2104283d90ab412238f7abb556d147913f0d990fff7011

First, Create the b2-node directory. the $PWD variable specifies the absolute path which you want.

mkdir -p $PWD/b2-node/data
cd $PWD/b2-node
wget -O ./data/db.tar.gz  https://download.bsquared.network/db.tar.gz
tar -zxvf ./data/db.tar.gz -C ./data/

Download the genesis file to $PWD/b2-node/data.

wget -O ./data/rollup.json https://download.bsquared.network/mainnet/rollup.json
wget -O ./data/genesis.json https://download.bsquared.network/mainnet/genesis.json

Generate JWT Secret, The HTTP connection between your beacon node and execution node needs to be authenticated using a JWT token. This is the way to generate jwt secret by openssl.

apk add openssl
openssl rand -hex 32 > ./data/jwt.txt

Setup B2 Node

Create a docker-compose.yaml file and mount the data directory and json files which downloaded above.

version: "3.9"
services:
  l2:
    image: ghcr.io/b2network/op-geth:v1.0
    container_name: l2
    environment:
      GETH_VERBOSITY: "3"
      GETH_DATADIR: "/db"
      GETH_ROLLUP_DISABLETXPOOLGOSSIP: "false"
      GETH_ROLLUP_SEQUENCERHTTP: "https://b2-mainnet.alt.technology/"
      GETH_HTTP: "true"
      GETH_HTTP_ADDR: "0.0.0.0"
      GETH_HTTP_API:  "web3,debug,eth,txpool,net,engine"
      GETH_HTTP_VHOSTS: "*" 
      GETH_WS:  "true"
      GETH_WS_ADDR: "0.0.0.0"
      GETH_WS_API: "web3,debug,eth,txpool,net,engine"
      GETH_AUTHRPC_ADDR:  "0.0.0.0"
      GETH_AUTHRPC_PORT: "8551"
      GETH_AUTHRPC_JWTSECRET: "/jwt.txt"
      GETH_BOOTNODES: "enode://176f80775240c053945d68ba74f87bca5df97a369d2d33f9b93dfb08faddbcdf68eddd19d7fb91089dda38973384d1ef61eb735bfb362986ebe85c57ff94a616@b2-mainnet-geth-p2p.altlayer.network:30303,enode://b6a3dd72aaa5494d7fb79c226af015a8ed515e401c765564d08e6b9b730b3c70e4e66658f1d45a9c62def7e061878a553ff19704b966c9ed98f1ca90eed09b05@b2-mainnet-bootnode1.bsquared.network:30303,enode://a1c925891787aadb1652c424dd3f7f0f037daf1337ffa03db7b70eed9b5c0853828881b487c3e0dd5c677680ec12d072ba772982fd56d86f846e85998b6191de@b2-mainnet-bootnode2.bsquared.network:30303"
      GETH_METRICS: "true"
    restart: always
    network_mode: host
    volumes:
    - ./data/db:/db
    - ./data/genesis.json:/genesis.json
    - ./data/jwt.txt:/jwt.txt

  op-node:
    image: us-docker.pkg.dev/oplabs-tools-artifacts/images/op-node:99a53381019d3571359d989671ccf70f8d69dfd9
    container_name: op-node
    environment:
      OP_NODE_SYNCMODE: "execution-layer"
      OP_NODE_L1_TRUST_RPC: "true"
      OP_NODE_SEQUENCER_L1_CONFS: "10"
      OP_NODE_VERIFIER_L1_CONFS:  "10"
      OP_NODE_L1_BEACON: "https://hub-cl-rpc.bsquared.network"
      OP_NODE_L2_ENGINE_RPC: "ws://127.0.0.1:8551"
      OP_NODE_L2_ENGINE_AUTH: "/jwt.txt"
      OP_NODE_ROLLUP_CONFIG:  "rollup.json"
      OP_NODE_RPC_ADDR: "0.0.0.0"
      OP_NODE_L1_ETH_RPC: "https://hub-rpc.bsquared.network"
      OP_NODE_L1_RPC_KIND: "standard"
      OP_NODE_METRICS_ENABLED:  "true"
      OP_NODE_P2P_LISTEN_IP: "0.0.0.0"
      OP_NODE_P2P_LISTEN_TCP_PORT: "9222"
      OP_NODE_P2P_LISTEN_UDP_PORT: "9222"
      OP_NODE_P2P_DISCOVERY_PATH: "/data/node/opnode_discovery_db"
      OP_NODE_P2P_PEERSTORE_PATH: "/data/node/opnode_peerstore_db"
      OP_NODE_P2P_PRIV_PATH: "/data/node/opnode_p2p_priv.txt"
      OP_NODE_P2P_STATIC: "/dns/b2-mainnet-node-p2p.altlayer.network/tcp/9003/p2p/16Uiu2HAmGM3EGwU7LBz64y2dc9RzUNNBSNeuNbrCXUnxxGQLgXST,/dns/b2-mainnet-bootnode1.bsquared.network/tcp/9222/p2p/16Uiu2HAm4AvoW3JmjHBswqCyf9fA91GDQNZQPt2ZM5bTWASMGmQS,/dns/b2-mainnet-bootnode2.bsquared.network/tcp/9222/p2p/16Uiu2HAmGJ7doABBynM5yn5CncicqwizY8xWPTXJTojm9BpS7N4x"
    depends_on:
    - l2
    restart: always
    network_mode: host
    volumes:
    - ./data/node:/data/node
    - ./data/jwt.txt:/jwt.txt
    - ./data/rollup.json:/rollup.json

Now, All preparations are complete, and the data directory structure is as follow:

tree -L 3
.
├── data
│   ├── db
│   │   ├── geth
│   │   └── keystore
│   ├── db.tar.gz
│   ├── genesis.json
│   ├── jwt.txt
│   └── rollup.json
└── docker-compose.yml

The next step is to start the service.

Start The Node

docker-compose up -d

Verify Result

Watch the L2 container logs

docker logs -f l2

l2  | INFO [06-17|09:45:07.841] Merge configured:
l2  | INFO [06-17|09:45:07.841]  - Hard-fork specification:    https://github.com/ethereum/execution-specs/blob/master/network-upgrades/mainnet-upgrades/paris.md
l2  | INFO [06-17|09:45:07.841]  - Network known to be merged: true
l2  | INFO [06-17|09:45:07.841]  - Total terminal difficulty:  0
l2  | INFO [06-17|09:45:07.841]  - Merge netsplit block:       #0
l2  | INFO [06-17|09:45:07.841]
l2  | INFO [06-17|09:45:07.841] Post-Merge hard forks (timestamp based):
l2  | INFO [06-17|09:45:07.841]  - Shanghai:                    @0          (https://github.com/ethereum/execution-specs/blob/master/network-upgrades/mainnet-upgrades/shanghai.md)
l2  | INFO [06-17|09:45:07.841]  - Cancun:                      @0
l2  | INFO [06-17|09:45:07.841]  - Regolith:                    @0
l2  | INFO [06-17|09:45:07.841]  - Canyon:                      @0
l2  | INFO [06-17|09:45:07.841]  - Ecotone:                     @0
l2  | INFO [06-17|09:45:07.841]
l2  | INFO [06-17|09:45:07.841] ---------------------------------------------------------------------------------------------------------------------------------------------------------
l2  | INFO [06-17|09:45:07.841]
l2  | INFO [06-17|09:45:07.877] Loaded most recent local block           number=2,593,146 hash=12c9b9..19e5d4 td=0 age=3d2h17m
l2  | INFO [06-17|09:45:07.877] Loaded most recent local finalized block number=2,592,324 hash=5dd607..3a9f3c td=0 age=3d2h44m
l2  | INFO [06-17|09:45:07.879] Loaded last snap-sync pivot marker       number=2,190,015

Block synchronization takes some time, please wait patiently. After some while，can check the syncing process by below command:

curl -s -X POST -H 'Content-Type: application/json' --data '{"jsonrpc":"2.0","method":"eth_syncing","params":[],"id":1}' http://localhost:8545 | jq '.result'

The block will catch up to the latest block once the request returns false.

# curl -s -X POST -H 'Content-Type: application/json' --data '{"jsonrpc":"2.0","method":"eth_syncing","params":[],"id":1}' http://localhost:8545 | jq '.result'
false

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