hashicorp/nomad · error

unable to parse configured address: %v

Error message

unable to parse configured address: %v

What it means

pathToURL normalizes the API path into a full URL for `nomad operator api`. When the target URL has no scheme but a client Address is configured, it parses config.Address with url.Parse; a parse failure produces "unable to parse configured address: %v". This guards against garbage in the address configuration before it is used to derive the scheme.

Source

Thrown at command/operator_api.go:441

		!strings.HasPrefix(path, "unix://") {
		scheme := "http"

		// If the user has set any TLS configuration value, this is a good sign
		// Nomad is running with TLS enabled. Otherwise, use the address within
		// the config to identify a scheme.
		if config.TLSConfig.CACert != "" ||
			config.TLSConfig.CAPath != "" ||
			config.TLSConfig.ClientCert != "" ||
			config.TLSConfig.TLSServerName != "" ||
			config.TLSConfig.Insecure {

			// TLS configured, but scheme not set. Assume https.
			scheme = "https"
		} else if config.Address != "" {

			confURL, err := url.Parse(config.Address)
			if err != nil {
				return nil, fmt.Errorf("unable to parse configured address: %v", err)
			}

			// Ensure we only overwrite the set scheme value if the parsing
			// identified a valid scheme.
			if confURL.Scheme == "http" || confURL.Scheme == "https" {
				scheme = confURL.Scheme
			}
		}

		path = fmt.Sprintf("%s://%s", scheme, path)
	}

	u, err := url.Parse(path)
	if err != nil {
		return nil, err
	}

	// If URL.Host is empty, use defaults from client config.

View on GitHub (pinned to 482b49bf1a)

Solutions

1. Echo $NOMAD_ADDR and fix malformed characters; set a clean URL like http://127.0.0.1:4646.
2. Pass a valid -address flag to override the bad environment value.
3. Check client config files for stray whitespace/quotes around the address.
4. Ensure scheme is http:// or https:// and host:port form is valid.

Example fix

// before (shell)
export NOMAD_ADDR="http://127.0.0.1:4646/ "   # trailing junk
// after
export NOMAD_ADDR="http://127.0.0.1:4646"

// shell: sanity-check the address parses as a URL before invoking
case "$NOMAD_ADDR" in
  http://*|https://*) : ;;
  *) echo "NOMAD_ADDR='$NOMAD_ADDR' is not a valid http(s) URL"; exit 1 ;;
esac

// bash
if ! out=$(nomad operator api "$PATH" 2>&1); then
  case "$out" in *"unable to parse configured address"*) echo "check NOMAD_ADDR: $NOMAD_ADDR" ;; esac
fi

When it happens

Trigger: `nomad operator api ...` where the address to parse (config.Address from -address flag, NOMAD_ADDR env, or config file) is not a parseable URL — e.g. contains control characters, spaces, or an invalid scheme like `ht!tp://host:4646`.

Common situations: NOMAD_ADDR with typos or shell-interpolated junk; quoting mistakes in config files (HCL/JSON) embedding whitespace; scripts building the address with concatenation errors.

Understand the failure class

Background: "Invalid URL" / "URL cannot be empty": fix the malformed or missing URL behind request-construction failures — this error's family across 50 libraries.

• Parsing and encoding errors: unexpected token, malformed input — why parsers reject input and how to find the real culprit.

Related errors

• Unable to parse configured address: %v
• error determining port: %v
• no CNI network config found
• A template must be supplied using '-template' when using go-
• Invalid value for "-out"; valid values are [go-template, hcl

AI-assisted analysis of hashicorp/nomad@482b49bf1a (2026-09-04). Data as JSON: /api/errors/9fe819f24a5e9a42. Report an issue: GitHub.