If you do not wish to provide system Database Administrator (DBA) account details to
the Ambari Ranger installer, you can use the dba_script.py
Python script to
create Ranger DB database users without exposing DBA account information to the Ambari Ranger
installer. You can then run the normal Ambari Ranger installation without specify a DBA user
name and password.
-
Download the Ranger rpm using the yum install command:
yum install
ranger-admin
.
-
You should see one file named
dba_script.py
in the
/usr/hdp/current/ranger-admin
directory.
-
Get the script reviewed internally and verify that your DBA is authorized to run
the script.
-
Execute the script by running the following command:
python
dba_script.py
.
-
Pass all values required in the argument. These should include
db
flavor
, JDBC jar
, db host
, db
name
, db user
, and other parameters.
-
If you would prefer not to pass runtime arguments via the command prompt,
you can update the
/usr/hdp/current/ranger-admin/install.properties
file
and then run: python dba_script.py -q
When you specify the -q
option, the script will read all
required information from the install.properties
file.
-
You can use the -d
option to run the script in "dry" mode.
Running the script in dry mode causes the script to generate a database
script.
python dba_script.py -d /tmp/generated-script.sql
-
Anyone can run the script, but it is recommended that the system DBA run the
script in dry mode. In either case, the system DBA should review the
generated script, but should only make minor adjustments to the script, for
example, change the location of a particular database file. No major changes
should be made that substantially alter the script -- otherwise the Ranger
install may fail.
The system DBA must then run the generated script.
-
Run the Ranger Ambari install procedure, but set Setup Database and Database
User to No in the Ranger Admin section of the Customize Services page.