Unknown url protocol from URL ” + url + ” – How to solve this Elasticsearch error

Unknown url protocol from URL ” + url + ” – How to solve this Elasticsearch error

Opster Team

July-20, Version: 1.7-8.0

Before you begin reading this guide, we recommend you try running the Elasticsearch Error Check-Up which can resolve issues that cause many errors.

This guide will help you check for common problems that cause the log ” unknown url protocol from URL ” + url + ” ” to appear. It’s important to understand the issues related to the log, so to get started, read the general overview on common issues and tips related to the Elasticsearch concepts: repositories.

Advanced users might want to skip right to the common problems section in each concept or try running the Check-Up which analyses ES to pinpoint the cause of many errors and provides suitable actionable recommendations how to resolve them (free tool that requires no installation).

Log Context

Log”unknown url protocol from URL [” + url + “]”classname  is URLRepository.java We extracted the following from Elasticsearch source code for those seeking an in-depth context :

* Makes sure that the url is white listed or if it points to the local file system it matches one on of the root path in path.repo
  private URL checkURL(URL url) {
  String protocol = url.getProtocol();
  if (protocol == null) {
  throw new RepositoryException(getMetadata().name(); "unknown url protocol from URL [" + url + "]");
  for (String supportedProtocol : supportedProtocols) {
  if (supportedProtocol.equals(protocol)) {
  try {
  if (URIPattern.match(urlWhiteList; url.toURI())) {


Run the Check-Up to get a customized report like this:

Analyze your cluster