boulder/test/config/cert-checker.json

{
  "certChecker": {
    "dbConnectFile": "test/secrets/cert_checker_dburl",
    "maxDBConns": 10,
    "hostnamePolicyFile": "test/hostname-policy.json"
  },

  "pa": {
    "challenges": {
      "http-01": true,
      "tls-sni-01": true,
      "dns-01": true
    }
  },

  "syslog": {
    "stdoutlevel": 6,
    "sysloglevel": 4
  }
}