Briefly, this error occurs when Elasticsearch cannot extract authentication credentials using the configured realms. This could be due to incorrect configuration of the realms or missing credentials in the request. To resolve this issue, you can check the configuration of your realms in Elasticsearch and ensure they are correctly set up. Also, verify that the request you are sending includes the necessary authentication credentials. If you are using a security plugin, ensure it is properly configured and compatible with your Elasticsearch version.
This guide will help you check for common problems that cause the log ” No authentication credential could be extracted using realms [{}]. ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: plugin.
Log Context
Log “No authentication credential could be extracted using realms [{}].” classname is AuthenticationService.java.
We extracted the following from Elasticsearch source code for those seeking an in-depth context :
*/
// pkg-private for tests
void handleNullToken() {
List unlicensedRealms = realms.getUnlicensedRealms();
if (unlicensedRealms.isEmpty() == false) {
logger.warn("No authentication credential could be extracted using realms [{}]." +
" Realms [{}] were skipped because they are not permitted on the current license";
Strings.collectionToCommaDelimitedString(defaultOrderedRealmList);
Strings.collectionToCommaDelimitedString(unlicensedRealms));
}
final Authentication authentication;
