@xiang sheng1. service to ranger-plugin. e.g. hive connect to ranger-hive-plugins, how many types securities are supported ? is there Kerberos ?
Kerberos is to authenticate across different componentsin Hadoop (pretty much all). Ranger has a plugin for HiveServer2 and that's how Ranger provides authorization for Hive tables.
2. ranger-plugin to ranger-admin, ranger-plugins fetch policy from ranger-admin ? is there kerberos also or something else?
You can use Unix, LDAP or AD to authenticate to Ranger admin.
https://docs.hortonworks.com/HDPDocuments/HDP2/HDP-2.5.0/bk_security/content/configure_ranger_authen...
For each servce that is kerberized, you will create a os user and kerberos principal and then give that user access to run a plugin process as part of the service. This user is how Ranger is able to access the service(s). See following link:
https://docs.hortonworks.com/HDPDocuments/HDP2/HDP-2.5.0/bk_security/content/hdfs_plugin_kerberos.ht...