README.md

Build/test the Go code

To build the Go code, run the following command:

go build

To test the Go code, run the following command:

go test ./...

Run the Docker image

To run the Docker image, run the following command:

docker build -t gwei_exporter .
docker run -p 9100:9100 gwei_exporter

The exporter will listen on port 9100 and the path /metrics by default.

Be sure to export ETHERSCAN_API_KEY if you wish to not be rate limited

export ETHERSCAN_API_KEY=xxxxxxx.....

curl http://localhost:9100/metrics
# HELP eth_gas_price The current gas price of ETH in gwei
# TYPE eth_gas_price gauge
eth_gas_price{type="average"} 143
eth_gas_price{type="fast"} 530
eth_gas_price{type="fastest"} 530
eth_gas_price{type="safeLow"} 143

Include scrape configs

To include scrape configs in Prometheus, add the following to your Prometheus configuration file:

scrape_configs:
  - job_name: "gwei"
    scrape_interval: 10s
    static_configs:
      - targets: ["localhost:9100"]

This will tell Prometheus to scrape the exporter every 10 seconds.