Hi, I am using hadoop hortonworks hdp 3.0.1.0 and I have installed services such as hdfs, yarn, mapreduce2, tez, spark2, hive, hbase, sqoop, zookeeper, kafka, etc.   The problem i face now is for all this services that has been installed, I've actually forgotten the username and password for each of this service and the reason being I post this question is because I need to update a listing and keep in a secure manner to allow for future reference.   Is there a way to check how can this username and password be located in the server?   Thanks. ... View more