Kerberos authentication stopped working.

  • 27 January 2022
  • 0 replies

Userlevel 4


The logs are filled with several exceptions related to Kerberos authentication and Kinit. 


WARN ConnectToCluster - Error receiving response from <server-host>
org.apache.kudu.client.NonRecoverableException: Server requires Kerberos, but this client is not authenticated (kinit) 
Caused by: GSS initiate failed [Caused by GSSException: No valid credentials provided (Mechanism level: Failed to find any Kerberos tgt)]
[thread:kafka-kerberos-refresh-thread<->] WARN KerberosLogin - [Principal=sdc_prd@TOLLGROUP.LOCAL]: Not attempting to re-login since the last re-login was attempted less than 60 seconds before
[thread:Kerberos-Renewal-Thread<>] ERROR SecurityContext - Stopping renewal thread because of exception: java.lang.RuntimeException: Could not get Kerberos credentials


The last exception from the examples is telling us that the Kerberos renewal thread was stopped because of the exceptions. Since the renewal thread died, as a result, no re-logins have been happening since and the Kerberos ticket for your SDC may have expired already.  You will need to restart SDC to get the renewal thread back up again.

This topic has been closed for comments