Ethereum: Geth and lighthouse – connection problem

Ethereum Geth and Lighthouse Connectivity Issue

The Ethereum network relies on the Geth blockchain engine to execute transactions, manage accounts, and validate smart contracts. The Geth client is responsible for interacting with the Ethereum mainnet, while Lighthouse provides a secure development environment (SDE) for writing and testing Ethereum contracts.

Vulnerability in Docker Compose

However, there is an issue in your docker-compose.yml file that could potentially lead to connectivity issues between the Geth container and the Lighthouse container. Specifically:

• The lighthouse service is not properly configured to connect to the geth service.

• The etherscan-api and infura.io services are not included in the docker-compose.yml file.

Troubleshooting Connectivity

To resolve this issue, you need to add the required configurations for Lighthouse and Ethereum mainnet. Here is an updated docker-compose.yml file that should fix the connectivity issue:

version: '3'
services:
geth:
container_name: geth
volumes:
- /mnt/external/geth:/root/.ethereum
- /mnt/geth-data:/var/lib/etherscan
lighthouse:
image: ethereum/go-ethereum/lighthouse:v1.0
ports:
- "۸۰۸۰:۸۰۸۰"
depends_on:
- get
environment:
- ETHERSCAN_API_KEY=YOUR_ETHERESCAN_API_KEY
- INFURA_PROJECT_ID=YOUR_INFURA_PROJECT_ID
etherscan-api:
image: ethereum/go-ethereum/etherscan-api:v1.4.2
ports:
- "۸۵۴۳:۸۵۴۳"


  infura.io:

    image: ethereum/go-ethereum/infura-go:v0.24.2

    ports:

      - "۵۰۰۸:۵۰۰۸"

In this updated docker-compose.yml file:

• We added the necessary configurations for Lighthouse and Ethereum mainnet.

• The etherscan-api image is used to establish a connection to the Ethereum API.

• The infura.io' image is used to connect to the Infura network.

• Environment variablesETHERSCAN_API_KEYandINFURA_PROJECT_IDare set for each service.

After updating thedocker-compose.ymlfile, you can run it with:

docker-compose up -d --build

Once the services are up, you should be able to access Lighthouse by visiting (assuming the geth container is running on port 8551). You can also use the Ethereum API endpoint by visiting

By adding these configurations to yourdocker-compose.yml` file, you should now be able to connect Lighthouse to your Geth container and access the Ethereum mainnet.