Community Articles
Find and share helpful community-sourced technical articles
Labels (2)

Use Case :

1 . ADDING a member to another group and being able to manage them internally without having to deal with outside or additional products.

2 . To be able to easily determine what members reside in what groups instead of having to scroll down page after page to see what members are in what groups especially when you have hundreds of users to keep track of.

3 . To easily administer various groups without having the hassle of creating more and more Active Directory/LDAP associations and having to submit change control requests to other departments for something we should be able to administer on our own.

Ranger User Sync Process supports reading users and group information from one of the following sources:


  • Text file - CSV or JSON format


CSV Format :

If the filename does not end with .json, each line in the file will be treated as a delimiter separated fields of the following format. Default delimiter is a comma; this can be changed using configuration shown above.


CSV File Format 
e.g. UserGroupSyncFile.txt


To run it as Command Line tool:

-Dlogdir=/var/log/ranger/usersync -cp

Steps :

Create a group called solr_group and add certain users (imported from LDAP) into that group that we know will use SOLR. All the users are associated with the groups defined through LDAP and nothing else but we want to create additional groups and link users to those groups on Ranger.

1. Cluster with Ranger and configure with LDAP users. Here it is "packer".

2. Create a internal group on Ranger UI. Here it is "solr_group".

3. Edit an external LDAP user to add it to the group that we created.

4. Unable to edit the group field(greyed out) on Ranger UI for that LDAP user.

[root@sandbox ~]# vi /tmp/ugsync.txt 
[root@sandbox ~]# cat /tmp/ugsync.txt
[root@sandbox ~]# java -Dlogdir=/var/log/ranger/usersync -cp
org.apache.ranger.unixusersync.process.FileSourceUserGroupBuilder /tmp/ugsync.txt
log4j: reset
attribute= "false".log4j: Threshold
="null".log4j: Level value
for root is [info].log4j: root level
set to INFOlog4j: Class name:
[org.apache.log4j.DailyRollingFileAppender]log4j: Setting
property [file] to [/var/log/ranger/usersync/usersync.log].log4j: Setting
property [datePattern] to ['.'yyyy-MM-dd].log4j: Parsing
layout of class: "org.apache.log4j.PatternLayout"log4j: Setting
property [conversionPattern] to [%d{dd MMM yyyy HH:mm:ss} %5p %c{1} [%t] -
%m%n].log4j: setFile
called: /var/log/ranger/usersync/usersync.log, truelog4j: setFile endedlog4j: Appender
[logFile] to be rolled at midnight.log4j: Adding
appender named [logFile] to category [root].log4j:
/var/log/ranger/usersync/usersync.log ->
/var/log/ranger/usersync/usersync.log.2016-04-04log4j: setFile
called: /var/log/ranger/usersync/usersync.log, truelog4j: setFile ended
[root@sandbox ~]# cd
New Contributor


I'm using SSL-enabled Ranger 0.7 with LDAP/AP usersync. I wiped the external groups added by the LDAP/AD sync process and I'm attempting to add a user imported from LDAP/AP (demo1) to an internal group (demo1_grp). So before starting the user demo1 had no groups.

My /tmp/ugsync.txt file is as follows:

# cat /tmp/ugsync.txt


When launching the code above I get the following erros:

log4j: reset attribute= "false".
log4j: Threshold ="null".
log4j: Level value for root is [info].
log4j: root level set to INFO
log4j: Class name: [org.apache.
log4j: Setting property [file] to [/var/log/ranger/usersync/usersync.log].
log4j: Setting property [datePattern] to ['.'yyyy-MM-dd].
log4j: Parsing layout of class: "org.apache.log4j.PatternLayout"
log4j: Setting property [conversionPattern] to [%d{dd MMM yyyy HH:mm:ss} %5p %c{1} [%t] - %m%n].
log4j: setFile called: /var/log/ranger/usersync/usersync.log, true
log4j: setFile ended
log4j: Appender [logFile] to be rolled at midnight.
log4j: Adding appender named [logFile] to category [root].
Exception in thread "main" java.lang.NullPointerException at org.apache.ranger.unixusersync.process.PolicyMgrUserGroupBuilder.buildGroupList( at org.apache.ranger.unixusersync.process.PolicyMgrUserGroupBuilder.buildUserGroupInfo( at org.apache.ranger.unixusersync.process.PolicyMgrUserGroupBuilder.init( at org.apache.ranger.unixusersync.process.FileSourceUserGroupBuilder.main(

Any ideas? Thanks in advance.

Don't have an account?
Version history
Revision #:
1 of 1
Last update:
‎06-01-2016 12:11 PM
Updated by:
Top Kudoed Authors