README.md

Ethereum RPC Proxy

The Ethereum RPC Proxy System provides a robust solution for managing and monitoring Ethereum RPC providers. It consists of two main components:

1. RPC Health Checker: Monitors and validates RPC provider health
2. nginx-proxy: Acts as a reverse proxy with provider failover capabilities

Running on the local machine

Run the complete system:

1. Generate provider configuration files and store them in the secrets folder:

   # Create secrets directory if it doesn't exist
   mkdir -p secrets
   
   # Generate default_providers.json with token authentication
   python3 rpc-health-checker/generate_providers.py \
     --providers infura:YOUR_INFURA_TOKEN grove:YOUR_GROVE_TOKEN \
     --networks mainnet sepolia \
     --chains ethereum optimism arbitrum base \
     --output secrets/default_providers.json
   
   # Or use mix of token and basic authentication for some providers
   python3 rpc-health-checker/generate_providers.py \
     --providers infura:YOUR_INFURA_TOKEN grove:username:password \
     --networks mainnet sepolia \
     --chains ethereum optimism arbitrum base \
     --output secrets/default_providers.json
     
   # Generate reference_providers.json
   python3 rpc-health-checker/generate_providers.py \
     --single-provider \
     --providers infura:YOUR_INFURA_TOKEN_REFERENCE \
     --networks mainnet sepolia \
     --chains ethereum optimism arbitrum base \
     --output secrets/reference_providers.json

   Please replace:

   • YOUR_INFURA_TOKEN and YOUR_INFURA_TOKEN_REFERENCE with your Infura API tokens
   • YOUR_GROVE_TOKEN with your Grove API token, or use username:password for basic auth
   • Other provider credentials as needed

   Note: --providers accepts multiple providers with different authentication methods:

   • Token auth format: provider:token (e.g., infura:abc123)
   • Basic auth format: provider:username:password (e.g., grove:user:pass)
   • Example: --providers infura:TOKEN1 grove:user:pass nodefleet:TOKEN2

2. Create .htpasswd file for nginx proxy authentication:

   htpasswd -c secrets/.htpasswd dev

3. Execute the following commands to start the system:

   docker-compose -f docker-compose-local.yml up -d --build

4. Run test requests:

   curl -u dev:<password> -X POST http://localhost:8080/ethereum/mainnet \
   -H "Content-Type: application/json" \
   -d '{"jsonrpc":"2.0","method":"eth_blockNumber","params":[],"id":1}'

The services will be accessible under:

• RPC Health Checker: http://localhost:8081
  • Check the list of validated providers at http://localhost:8081/providers
• nginx-proxy: http://localhost:8080
  • The new RPC endpoint is now available http://localhost:8080/ethereum/mainnet (path is /chain/network)
• Prometheus: http://localhost:9090
  • Metrics and monitoring interface
• Grafana: http://localhost:3000 (default credentials: admin/admin)
  • Visualization dashboards for RPC metrics and health status

Sub projects

• RPC Health Checker
• nginx-proxy