Run a validator and bridge operator together

Overview

This guide demonstrates how to run a testnet validator node and a bridge operator on one machine using Docker.

Prerequisites

Docker

Install Docker Engine and the Docker Compose plugin:

RPC endpoints

Have two RPC endpoints ready:

Ronin RPC endpoint for listening and sending events on the Saigon testnet: https://saigon-testnet.roninchain.com/rpc.
Ethereum RPC endpoint for listening and sending events on the Ethereum chain, such as Alchemy or Infura.

Private keys

Generate private keys for operating the nodes:

One key for the validator
One key for the bridge

For more information, see Generate keys.

Steps

Set up directories:
```
mkdir -p ~/ronin/docker
cd ~/ronin
```
Create a directory for bridge data:
```
mkdir bridgedata
```
Create a directory for chain data:
```
mkdir -p chaindata/data/ronin
```

In the docker directory, create a docker-compose.yml file with the following configuration:

version: "3"
services:
  node:
    image: ${NODE_IMAGE}
    stop_grace_period: 5m
    stop_signal: SIGINT
    hostname: node
    container_name: node
    ports:
      - 127.0.0.1:8545:8545
      - 127.0.0.1:8546:8546
      - 30303:30303
      - 30303:30303/udp
      - 6060:6060
    volumes:
      - ~/ronin/chaindata:/ronin
    environment:
      - SYNC_MODE=snap
      - PASSWORD=${PASSWORD}
      - PRIVATE_KEY=${VALIDATOR_PRIVATE_KEY}
      - NETWORK_ID=${NETWORK_ID}
      - RONIN_PARAMS=${RONIN_PARAMS}
      - VERBOSITY=${VERBOSITY}
      - MINE=${MINE}
      - GASPRICE=${GASPRICE}
      - GENESIS_PATH=${GENESIS_PATH}
      - ETHSTATS_ENDPOINT=${INSTANCE_NAME}:${CHAIN_STATS_WS_SECRET}@${CHAIN_STATS_WS_SERVER}:443
      - BLS_PASSWORD=${BLS_PASSWORD}
      - BLS_PRIVATE_KEY=${BLS_PRIVATE_KEY}
      - BLS_AUTO_GENERATE=${BLS_AUTO_GENERATE}
      - ENABLE_FAST_FINALITY=${ENABLE_FAST_FINALITY}
      - ENABLE_FAST_FINALITY_SIGN=${ENABLE_FAST_FINALITY_SIGN}
      - BLS_SHOW_PRIVATE_KEY=${BLS_SHOW_PRIVATE_KEY}
      - GENERATE_BLS_PROOF=${GENERATE_BLS_PROOF}
  db:
    image: postgres:14.3
    restart: always
    command: postgres -c 'max_connections=1000'
    hostname: db
    container_name: db
    ports:
      - 127.0.0.1:5432:5432
    environment:
      POSTGRES_PASSWORD: ${DB_PASSWORD}
    volumes:
      - ~/bridgedata-v2:/var/lib/postgresql/data
  bridge:
    image: ${BRIDGE_IMAGE}
    restart: always
    container_name: bridge
    environment:
      - RONIN_RPC=${RPC_ENDPOINT}
      - RONIN_BRIDGE_OPERATOR_KEY=${BRIDGE_OPERATOR_PRIVATE_KEY}
      - ETHEREUM_RPC=${ETHEREUM_ENDPOINT}
      - DB_HOST=db
      - DB_NAME=${DB_NAME}
      - DB_PORT=5432
      - DB_USERNAME=${DB_USERNAME}
      - DB_PASSWORD=${DB_PASSWORD}
      - VERBOSITY=${VERBOSITY}
      - CONFIG_PATH=${CONFIG_PATH}
      - RONIN_TASK_INTERVAL=${RONIN_TASK_INTERVAL}
      - RONIN_TRANSACTION_CHECK_PERIOD=${RONIN_TRANSACTION_CHECK_PERIOD}
      - RONIN_MAX_PROCESSING_TASKS=${RONIN_MAX_PROCESSING_TASKS}
      - ETHEREUM_GET_LOGS_BATCH_SIZE=${ETHEREUM_GET_LOGS_BATCH_SIZE}
    depends_on:
      - db
      - node

This compose file defines three services:

node that pulls a full Ronin node image from the GitHub Container Registry.
bridge that pulls a bridge image.
db that builds a Postgres database for the bridge.

In the docker directory, create an .env file and add the following content, replacing the <...> placeholder values with your information:

# Your Ethereum RPC endpoint
ETHEREUM_ENDPOINT=<ETHEREUM_ENDPOINT>

# The name of your node that you want displayed on https://ronin-stats.roninchain.com/
INSTANCE_NAME=<INSTANCE_NAME>

# The latest version of the node's image as listed in https://docs.roninchain.com/validators/setup/upgrade-validator
NODE_IMAGE=<NODE_IMAGE>

# The latest version of the bridge's image as listed in https://docs.roninchain.com/bridge-operators/setup/upgrade-bridge
BRIDGE_IMAGE=<BRIDGE_IMAGE>

# Your bridge operator private key without the 0x prefix
BRIDGE_OPERATOR_PRIVATE_KEY=<BRIDGE_OPERATOR_PRIVATE_KEY>

# Your ECDSA private key without the 0x prefix, see https://docs.roninchain.com/validators/setup/generate-keys#generate-an-ecdsa-key
VALIDATOR_PRIVATE_KEY=<ECDSA_PRIVATE_KEY>

# The password used to encrypt the node's private key file
PASSWORD=<PASSWORD>

# BLS Wallet features
# Your BLS private key without the 0x prefix, see https://docs.roninchain.com/validators/setup/generate-keys#generate-a-bls-key
BLS_PRIVATE_KEY=<BLS_PRIVATE_KEY>

# The password used to encrypt the BLS private key file
BLS_PASSWORD=<BLS_PASSWORD>

# Whether to participate in the finality vote broadcast
ENABLE_FAST_FINALITY=true

# Whether to produce the finality vote
ENABLE_FAST_FINALITY_SIGN=true

# Whether to automatically generate BLS private key
BLS_AUTO_GENERATE=false

# Whether to show the raw BLS private key after decryption
BLS_SHOW_PRIVATE_KEY=false

DB_NAME=bridge
DB_USERNAME=postgres

# The Postgres database password
DB_PASSWORD=<DB_PASSWORD>

RPC_ENDPOINT=http://node:8545

CONFIG_PATH=config.testnet.json
GENESIS_PATH=testnet.json
DEPLOYMENT=test

RONIN_TASK_INTERVAL=3
RONIN_TRANSACTION_CHECK_PERIOD=50
RONIN_MAX_PROCESSING_TASKS=200
ETHEREUM_GET_LOGS_BATCH_SIZE=100

NETWORK_ID=2021

GASPRICE=20000000000

MINE=true

VERBOSITY=3

CHAIN_STATS_WS_SECRET=xQj2MZPaN72
CHAIN_STATS_WS_SERVER=ronin-stats-ws.roninchain.com

RONIN_PARAMS=--http.api eth,net,web3,consortium --miner.gaslimit 100000000 --miner.gasreserve 10000000 --discovery.dns enrtree://AJCNIAXQIPO55NW3QE2NUBBDMPYZDOQUCAEUS65NHQFMUUFES5KOW@saigon.nodes.roninchain.com

(Optional) Download the snapshot from the ronin-snapshot repo:

cd ~/ronin/chaindata/data/ronin/
wget -q -O - <snapshot URL from the README file in the repo> | tar -I zstd -xvf -

Start the node:
```
cd ~/ronin/docker && docker-compose up -d
```
This command pulls a Ronin node image, a bridge image, a Postgres database, and starts the services you defined.
After a few minutes, check the status of your node on the Ronin Analytics page, the Testnet section. If it's green, the node is connected and up to date with the network.
Review the log for the validator and the bridge (the node should sync to the latest block for making the bridge work).
```
docker logs node -f --tail 100
docker logs bridge -f --tail 100
```

Overview​

Prerequisites​

Docker​

RPC endpoints​

Private keys​

Steps​