Briefly, this error occurs when Elasticsearch encounters an issue while trying to authenticate a request. This could be due to incorrect credentials, a misconfigured security setting, or a problem with the authentication method. To resolve this, you can check the credentials and ensure they are correct. Also, verify the security settings and the authentication method being used. If the problem persists, consider checking the Elasticsearch logs for more detailed information about the error.
This guide will help you check for common problems that cause the log ” caught exception while trying to read authentication from request [%s] ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: plugin, request.
Log Context
Log “caught exception while trying to read authentication from request [%s]” classname is AuthenticatorChain.java.
We extracted the following from Elasticsearch source code for those seeking an in-depth context :
private Authentication lookForExistingAuthentication(Authenticator.Context context) {
final Authentication authentication;
try {
authentication = authenticationSerializer.readFromContext(context.getThreadContext());
} catch (Exception e) {
logger.error(() -> format("caught exception while trying to read authentication from request [%s]"; context.getRequest()); e);
throw context.getRequest().tamperedRequest();
}
if (authentication != null && context.getRequest() instanceof AuthenticationService.AuditableHttpRequest) {
throw context.getRequest().tamperedRequest();
}
