Embedded PostgreSQL Database

If you are using Installation Path B - Manual Installation Using Cloudera Manager Packages and you want to use an embedded PostgreSQL database for the Cloudera Management Server, use this procedure to install and start the database:

1. Install the embedded PostgreSQL database packages:

   OS	Command
   RHEL-compatible, if you have a yum repo configured	$ sudo yum install cloudera-manager-server-db-2
   RHEL-compatible, if you're transferring RPMs manually	sudo yum --nogpgcheck localinstall cloudera-manager-server-db-2.noarch.rpm
   SLES	$ sudo zypper install cloudera-manager-server-db-2
   Ubuntu or Debian	$ sudo apt-get install cloudera-manager-server-db-2

2. Start the PostgreSQL database:

   $ sudo service cloudera-scm-server-db start

To find information about the PostgreSQL database account that the Cloudera Manager Server uses, read the /etc/cloudera-scm-server/db.properties file:

# cat /etc/cloudera-scm-server/db.properties

Auto-generated by scm_prepare_database.sh
#
Sat Oct 1 12:19:15 PDT 201
#
com.cloudera.cmf.db.type=postgresql
com.cloudera.cmf.db.host=localhost:7432
com.cloudera.cmf.db.name=scm
com.cloudera.cmf.db.user=scm
com.cloudera.cmf.db.password=TXqEESuhj5

To change a password associated with an embedded PostgreSQL database account:

1. Obtain the root password from the /var/lib/cloudera-scm-server-db/data/generated_password.txt file:

   # cat /var/lib/cloudera-scm-server-db/data/generated_password.txt
   
   MnPwGeWaip
   
   The password above was generated by /usr/share/cmf/bin/initialize_embedded_db.sh (part of the cloudera-scm-server-db package)
   and is the password for the user 'cloudera-scm' for the database in the current directory.
   
   Generated at Fri Jun 29 16:25:43 PDT 2012.

2. On the host on which the Cloudera Manager Server is running, log into PostgreSQL as the root user:

   psql -U cloudera-scm -p 7432 -h localhost -d postgres
   Password for user cloudera-scm: MnPwGeWaip
   psql (8.4.18)
   Type "help" for help.
   
   postgres=#

3. Determine the database and owner names:

   postgres=# \l
                                            List of databases
      Name    |    Owner     | Encoding | Collation  |   Ctype    |         Access privileges         
   -----------+--------------+----------+------------+------------+-----------------------------------
    amon      | amon         | UTF8     | en_US.UTF8 | en_US.UTF8 | 
    hive      | hive         | UTF8     | en_US.UTF8 | en_US.UTF8 | 
    nav       | nav          | UTF8     | en_US.UTF8 | en_US.UTF8 | 
    navms     | navms        | UTF8     | en_US.UTF8 | en_US.UTF8 | 
    postgres  | cloudera-scm | UTF8     | en_US.UTF8 | en_US.UTF8 | 
    rman      | rman         | UTF8     | en_US.UTF8 | en_US.UTF8 | 
    scm       | scm          | UTF8     | en_US.UTF8 | en_US.UTF8 | 
    template0 | cloudera-scm | UTF8     | en_US.UTF8 | en_US.UTF8 | =c/"cloudera-scm"
                                                                  : "cloudera-scm"=CTc/"cloudera-scm"
    template1 | cloudera-scm | UTF8     | en_US.UTF8 | en_US.UTF8 | =c/"cloudera-scm"
                                                                  : "cloudera-scm"=CTc/"cloudera-scm"
   (9 rows)
   
   

4. Set the password for an owner using the \password command. For example, to set the password for the amon owner, do the following:

   postgres=# \password amon
   Enter new password: 
   Enter it again: 

5. Configure the role with the new password:
   1. In the Cloudera Manager Admin Console, select Clusters > Cloudera Management Service.
   2. Click the Configuration tab.
   3. In the Scope section, select the role where you are configuring the database.
   4. Select Category > Database category.
   5. Set the Role Name Database Password property.
   6. Click Save Changes to commit the changes.