Unsupported url protocol protocol from URL urlToCheck – How to solve this Elasticsearch exception

Opster Team

August-23, Version: 7.16-8.9

Briefly, this error occurs when Elasticsearch attempts to connect to a URL with a protocol that it doesn’t support. This could be due to a typo in the protocol name or using a protocol that Elasticsearch doesn’t recognize. To resolve this issue, you should first verify the protocol in the URL. If it’s incorrect, correct it. If the protocol is correct but not supported by Elasticsearch, you may need to use a different protocol or update your Elasticsearch to a version that supports the protocol.

This guide will help you check for common problems that cause the log ” unsupported url protocol [” + protocol + “] from URL [” + urlToCheck + “] ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: repositories.

Log Context

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

 throw new RepositoryException(getMetadata().name(); exceptionMessage);
 return normalizedUrl;
 throw new RepositoryException(getMetadata().name(); "unsupported url protocol [" + protocol + "] from URL [" + urlToCheck + "]");
 }  @Override
 public boolean isReadOnly() {
 return true;


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