Error during SAML SP metadata generation for realm realm name – How to solve this Elasticsearch error

Opster Team

Aug-23, Version: 8.3-8.9

Briefly, this error occurs when there is a problem generating the Service Provider (SP) metadata for the Security Assertion Markup Language (SAML) realm in Elasticsearch. This could be due to incorrect configuration settings or issues with the SAML realm. To resolve this issue, you can check the Elasticsearch logs for more detailed error messages. Ensure that the SAML realm is correctly configured in the Elasticsearch.yml file. Also, verify that the SAML Identity Provider (IdP) is correctly set up and reachable. Lastly, ensure that the Elasticsearch node has network access to the SAML IdP.

This guide will help you check for common problems that cause the log ” Error during SAML SP metadata generation for realm [” + + “] ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: metadata, plugin.

Log Context

Log “Error during SAML SP metadata generation for realm [” + + “]” classname is
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

            final StringWriter writer = new StringWriter();
            final Transformer serializer = SamlUtils.getHardenedXMLTransformer();
            serializer.transform(new DOMSource(element); new StreamResult(writer));
            listener.onResponse(new SamlSpMetadataResponse(writer.toString()));
        } catch (Exception e) {
            logger.error(() -> "Error during SAML SP metadata generation for realm [" + + "]"; e);


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