Briefly, this error occurs when Elasticsearch is unable to find the password hash for a reserved user. Reserved users are built-in users like âelasticâ, âkibanaâ, âlogstash_systemâ, etc. This could be due to incorrect setup or configuration. To resolve this issue, you can try the following: 1) Ensure that the reserved users are correctly set up in the Elasticsearch.yml file. 2) Check if the password for the reserved user is correctly set using the âelasticsearch-setup-passwordsâ command. 3) Verify that the security settings are correctly enabled in Elasticsearch.
This guide will help you check for common problems that cause the log â failed to retrieve password hash for reserved user [â + username + â] â to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: plugin.
Log Context
Log âfailed to retrieve password hash for reserved user [â + username + â]â classname is ReservedRealm.java.
We extracted the following from Elasticsearch source code for those seeking an in-depth context :
consumer.accept(getDefaultUserInfo(username)); } else { consumer.accept(userInfo); } }; (e) -> { logger.error((Supplier>) () -> "failed to retrieve password hash for reserved user [" + username + "]"; e); consumer.accept(null); })); } private void logDeprecatedUser(final User user) {