node-healthchecker

Composite health (sync status) checker for blockchain nodes.

TL;DR

./node-healthchecker serve \
  --monitor-geth-url http://127.0.0.1:8545 \
  --monitor-lighthouse-url http://127.0.0.1:3500

curl -isS http://127.0.0.1:8080

• Unhappy path:

  HTTP/1.1 500 Internal Server Error
  Content-Type: application/text
  Date: Mon, 30 Oct 2023 08:06:25 GMT
  Content-Length: 354
  
  0: error while checking sync-status of lighthouse at 'http://127.0.0.1:3500/lighthouse/syncing': Get "http://127.0.0.1:3500/lighthouse/syncing": dial tcp 127.0.0.1:3500: connect: connection refused
  1: error while checking sync-status of geth at 'http://127.0.0.1:8545/': Get "http://127.0.0.1:8545/": dial tcp 127.0.0.1:8545: connect: connection refused
  

• Happy path:

  HTTP/1.1 200 OK
  Date: Mon, 30 Oct 2023 08:08:18 GMT
  Content-Length: 0