Hello everyone there is my problem : In order to automated kerberos installation i follow this tutorial for HDP sandbox 2.4 : https://community.hortonworks.com/articles/29203/automated-kerberos-installation-and-configuration.html I already try to set up it manually but without success because of a connection problem with the kdc when i try to configure it on ambari web interface. So i try the tutorial but now i have this problem when i launch it : 017-07-27,13:50:41 Enabling Kerberos % Total % Received % Xferd Average Speed Time Time Time Current Dload Upload Total Spent Left Speed 137 513 102 513 0 172 12 4 0:00:42 0:00:40 0:00:02 78 HTTP/1.1 400 Bad Request X-Frame-Options: DENY X-XSS-Protection: 1; mode=block X-Content-Type-Options: nosniff Cache-Control: no-store Pragma: no-cache Set-Cookie: AMBARISESSIONID=ka633m5h9um01jqyy6uamrb18;Path=/;HttpOnly Expires: Thu, 01 Jan 1970 00:00:00 GMT User: raj_ops Content-Type: text/plain Content-Length: 513 Server: Jetty(8.1.19.v20160209) { "status" : 400, "message" : "java.lang.IllegalArgumentException: Invalid KDC administrator credentials.\nThe KDC administrator credentials must be set as a persisted or temporary credential resource.This may be done by issuing a POST (or PUT for updating) to the /api/v1/clusters/:clusterName/credentials/kdc.admin.credential API entry point with the following payload:\n{\n \"Credential\" : {\n \"principal\" : \"(PRINCIPAL)\", \"key\" : \"(PASSWORD)\", \"type\" : \"(persisted|temporary)\"}\n }\n}" I try to solve the problem by fixing manually the credential but the script seems to modify (it changes my persisted credential by a temporary credential) it and i can't find where it do it (and also i don't know how to see the principal of the credential to understand maybe why it's not working). I also want to specify that in 2.6 ambari's log are : user : raj_ops password : raj_ops I think i configure my ambari.props correctly : CLUSTER_NAME=Sandbox AMBARI_ADMIN_USER=raj_ops AMBARI_ADMIN_PASSWORD=raj_ops AMBARI_HOST=localhost KDC_HOST=localhost REALM=EXAMPLE.COM KERBEROS_CLIENTS=localhost I have no more ideas on how to solve the problem please help me ^^ ... View more