Install UserSync and Start the Service

	Important
To ensure that LDAP/AD group level authorization is enforced in Hadoop, you should set up Hadoop group mapping for LDAP/AD.

Find the Ranger UserSync software:

yum search usersync

or

yum list | grep usersync

Install Ranger UserSync:

	Note
	Make sure the database on which Ranger will be installed is up and running.

yum install ranger_<version>-usersync.x86_64

At the Ranger UserSync installation directory, update the following properties in the install.properties file:

Table 13.2. Properties to Update in the install.properties File

Configuration Property Name	Default/Example Value	Required?
Policy Admin Tool
POLICY_MGR_URL URL for policy admin	http://policymanager.xasecure.net:6080	Y
User Group Source Information
SYNC_SOURCE Specifies where the user/group information is extracted to be put into Ranger database. unix - get user information from /etc/passwd file and gets group information from /etc/group file ldap - gets user information from LDAP service (see below for more information)	unix	N
SYNC_INTERVAL Specifies the interval (in minutes) between synchronization cycle. Note, the 2nd sync cycle will NOT start until the first sync cycle is COMPLETE.	5	N
UNIX user/group Synchronization
MIN_UNIX_USER_ID_TO_SYNC UserId below this parameter values will not be synchronized to Ranger user database	300 (Unix default), 1000 (LDAP default)	Mandatory if SYNC_SOURCE is selected as unix
LDAP user/group synchronization
SYNC_LDAP_URL URL of source ldap	ldap://ldap.example.com:389	Mandatory if SYNC_SOURCE is selected as ldap
SYNC_LDAP_BIND_DN ldap bind dn used to connect to ldap and query for users and groups	cn=admin,ou=users,dc=hadoop, dc=apache,dc-org	Mandatory if SYNC_SOURCE is selected as ldap
SYNC_LDAP_BIND_PASSWORD ldap bind password for the bind dn specified above	LdapAdminPassW0Rd	Mandatory if SYNC_SOURCE is selected as ldap
CRED_KEYSTORE_FILENAME Location of the file where encrypted password is kept	/usr/lib/xausersync/.jceks/xausersync.jceks (default) /etc/ranger/usersync/.jceks/xausersync.jceks	Mandatory if SYNC_SOURCE is selected as ldap
SYNC_LDAP_USER_SEARCH_BASE Search base for users	ou=users,dc=hadoop,dc=apache, dc=org	Mandatory if SYNC_SOURCE is selected as ldap
SYNC_LDAP_USER_SEARCH_SCOPE Search scope for the users, only base, one, and sub are supported values	sub (default)	N
SYNC_LDAP_USER_OBJECT_CLASS objectclass to identify user entries	person (default)	N (defaults to person)
SYNC_LDAP_USER_SEARCH_FILTER Optional additional filter constraining the users selected for syncing	(dept=eng)	N (defaults to an empty string)
SYNC_LDAP_USER_NAME _ATTRIBUTE Attribute from user entry that would be treated as user name	cn (default)	N (defaults to cn)
SYNC_LDAP_USER_GROUP_NAME _ATTRIBUTE attribute from user entry whose values would be treated as group values to be pushed into Policy Manager database. You can provide multiple attribute names separated by comma	memberof,ismemberof (default)	N (defaults to memberof, ismemberof)
SYNC_LDAP_SEARCH_BASE	Default is False. dc=example,de=com	N
SYNC_GROUP_SEARCH_ENABLED	Default is False. If set to True, and SYNC_GROUP_USER_MAP_SYNC_ENABLED is also set to True, you must set the following properties: SYNC_GROUP_SEARCH_BASE=ou=People,dc=example,dc=com SYNC_GROUP_SEARCH_SCOPE=sub SYNC_GROUP_OBJECT_CLASS=groupofnames SYNC_LDAP_GROUP_SEARCH_FILTER= SYNC_GROUP_NAME_ATTRIBUTE=cn SYNC_GROUP_MEMBER_ATTRIBUTE_NAME=member SYNC_PAGED_RESULTS_ENABLED=true SYNC_PAGED_RESULTS_SIZE=500RANGER_ SYNC_LDAP_REFERRAL=follow,ignore	N
User Synchronization
unix_user UNIX User who runs the ranger-usersync process	ranger (default)	Y
unix_group UNIX group associated with Unix user who runs the ranger-usersync process	ranger (default)	Y
SYNC_LDAP_USERNAME_CASE _CONVERSION Convert all username to lower/upper case none - no conversation will be done. Kept as it is in the SYNC_SOURCE lower - convert it to lower case when saving it to ranger db upper - convert it to upper case when saving it to ranger db	lower (default)	N (defaults to lower)
SYNC_LDAP_GROUPNAME_CASE _CONVERSION Convert all username to lower/upper case none - no conversation will be done. Kept as it is in the SYNC_SOURCE lower - convert it to lower case when saving it to ranger db upper - convert it to upper case when saving it to ranger db	lower (default)	N (defaults to lower)
logdir Location of the log directory where the usersync logs are stored	logs (default)	Y

Add the following property to the install.properties file to set the base directory for the Ranger Usersync process:

ranger_base_dir=/etc/ranger

Add the following properties to the install.properties file to set SSL configurations for Ranger Usersync:

AUTH_SSL_ENABLED=false
AUTH_SSL_KEYSTORE_FILE=/etc/ranger/usersync/conf/cert/unixauthservice.jks
AUTH_SSL_KEYSTORE_PASSWORD=UnIx529p
AUTH_SSL_TRUSTSTORE_FILE=
AUTH_SSL_TRUSTSTORE_PASSWORD=

Add the following property to the install.properties file to configure the Ranger Usersync PID directory to start and stop the Ranger Usersync service:

USERSYNC_PID_DIR_PATH=/var/run/ranger

Set the Policy Manager URL to http://<ranger-admin-host>:6080

Check the JAVA_HOME environment variable. If JAVA_HOME has not yet been set, enter:

export JAVA_HOME=<path of installed jdk version folder>

Install the Ranger UserSync service:

cd /usr/hdp/<version>/ranger-usersync

./setup.sh

Start the Ranger UserSync service:

service ranger-usersync start

To verify that the service was successfully started, wait 6 hours for LDAP/AD to synchronize, then do the following:

Go to
```
http://<ranger-admin-host>:6080
```
Click the Users/Group tab. See if users and groups are synchronized.
Add a UNIX/LDAP/AD user, then check for the presence of that user in the Ranger Admin tab.

​Install UserSync and Start the Service