22:47:33,574 ERROR o.a. - SASL negotiation failure Resolution: The Keytab either has wrong permissions or ownership.Įven the keytab has the right permission,Ĭheck all directories above the file recursively and make sure the owner (usually Dremio service user) can read the file. Issue #1Ĭaused by: : No valid credentials provided (Mechanism level: Failed to find any Kerberos tgt) Kerberos by default turns on impersonation so proxy settings have to be defined.