Linux users and groups are not syncing into the Ranger GUI

Products

• Services Suite

Issue/Introduction

Symptoms:

Linux users and groups to do not sync correctly into the Ranger UI.
 

The following error is seen in the /var/log/ranger/usersync/usersync.log:

01 Sep 2016 11:51:38  WARN UnixUserGroupBuilder [UnixUserSyncThread] - Group Name could not be found for group id: [7201659]. Skipping adding user [zabbix] with id [996].
01 Sep 2016 11:51:38  WARN UnixUserGroupBuilder [UnixUserSyncThread] - Unix UserId: []: can not be parsed as valid int. considering as  -1.
java.lang.NumberFormatException: For input string: ""
        at java.lang.NumberFormatException.forInputString(NumberFormatException.java:65)
        at java.lang.Integer.parseInt(Integer.java:592)
        at java.lang.Integer.parseInt(Integer.java:615)
        at org.apache.ranger.unixusersync.process.UnixUserGroupBuilder.buildUnixUserList(UnixUserGroupBuilder.java:153)
        at org.apache.ranger.unixusersync.process.UnixUserGroupBuilder.buildUserGroupInfo(UnixUserGroupBuilder.java:102)
        at org.apache.ranger.unixusersync.process.UnixUserGroupBuilder.init(UnixUserGroupBuilder.java:65)
        at org.apache.ranger.usergroupsync.UserGroupSync.run(UserGroupSync.java:55)
        at java.lang.Thread.run(Thread.java:745)

Environment

Cause

This is caused by an incorrectly formatted /etc/passwd or /etc/group file.

Resolution

Check for formatting issues in /etc/passwd or /etc/group files. For example, the ";" in the line below is a typo that caused the error mentioned above:

gpadmin:x:7200665:43457;:/home/gpadmin:/sbin/nologin

Correct the typo and restart Ranger through Ambari.