hi @Deepan_N the "kinit" command was successfully executed the "klist" command returns the date of the validated ticket and I have more than 10h to use the ticket. Both modes have been tested: curl: curl -v -u: --negotiate -X POST --data '{"className": "org.apache.spark.examples.SparkPi", "jars": ["/tmp/spark-examples-1.6.0-cdh5.16.1-hadoop2.6.0-cdh5.16.1.jar"], "name": "livy-test", "file": "hdfs:///tmp/spark-examples-1.6.0-cdh5.16.1-hadoop2.6.0-cdh5.16.1.jar", "args": [10]}' -H "Content-Type: application/json" -H "X-Requested-By: User" http://localhost:8998/batches python: import json, pprint, requests, textwrap from requests_kerberos import HTTPKerberosAuth host='http://localhost:8998' headers = {'Requested-By': 'livy','Content-Type': 'application/json','X-Requested-By': 'livy'} auth=HTTPKerberosAuth() data={'className': 'org.apache.spark.examples.SparkPi','jars': ["/tmp/spark-examples-1.6.0-cdh5.16.1-hadoop2.6.0-cdh5.16.1.jar"],'name': 'livy-test1', 'file': 'hdfs:///tmp/spark-examples-1.6.0-cdh5.16.1-hadoop2.6.0-cdh5.16.1.jar','args': ["10"]} r0 = requests.post(host + '/batches', data=json.dumps(data), headers=headers, auth=auth) r0.json() but unfortunately both ways return the error: <html> <head> <meta http-equiv="Content-Type" content="text/html;charset=ISO-8859-1"/> <title>Error 401 </title> </head> <body> <h2>HTTP ERROR: 401</h2> <p>Problem accessing /batches. Reason: <pre> Authentication required</pre></p> <hr /><a href="http://eclipse.org/jetty">Powered by Jetty:// 9.3.24.v20180605</a><hr/> </body> </html> PS¹: the cluster has kerberos PS²: the user that validated the ticket with "kinit" is the livy user that is created in AD (active directory)
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