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13.8.5. Migrating from an External PostgreSQL Database to an Embedded Database

The requirements to migrate from an External PostgreSQL Database to an Embedded database:
  • A complete installation of Red Hat Satellite server (satellite.example.com) using an External PostgreSQL Database (postgresql.example.com).

Procedure 13.6. Migrating to an Embedded Database from an External PostgreSQL Database

  1. Shut down all services on the Red Hat Satellite server:
    [root@satellite ~]# rhn-satellite stop
    
  2. Make sure your External PostgreSQL Database is still running.
  3. Remove the rhn-upgrade if it exists on your server:
    [root@satellite ~]# yum remove rhn-upgrade
    
  4. Update the External PostgreSQL Database to the latest schema version:
    [root@satellite ~]# yum update satellite-schema
    [root@satellite ~]# spacewalk-schema-upgrade
    
    This ensures that your database version matches the latest version for the Embedded Database.
  5. Create a directory to hold your database snapshot.
    [root@satellite ~]# mkdir ~/dbbackup
    [root@satellite ~]# cd ~/dbbackup
    
  6. Export the database using spacewalk-dump-schema:
    [root@satellite dbbackup]# spacewalk-dump-schema --to=postgresql > migrate-to-postgresql.sql
    
  7. Stop the External Database. It is no longer required.
  8. Install the PostgreSQL installation and Satellite database tools packages on the Satellite server:
    [root@satellite dbbackup]# yum install -y spacewalk-setup-postgresql spacewalk-dobby
    
  9. Use spacewalk-setup to populate the Embedded Database:
    [root@satellite dbbackup]# spacewalk-setup --db-only
    
    The script populates the database. Wait until this process completes.
    ** Database: Setting up database connection for PostgreSQL backend.
    ** Database: Installing the database:
    ** Database: This is a long process that is logged in:
    ** Database:   /var/log/rhn/install_db.log
    *** Progress: #
    ** Database: Installation complete.
    ** Database: Populating database.
    *** Progress: ####################################
    
  10. When the script completes database population, restore the database schema:
    [root@satellite dbbackup]# spacewalk-sql -i < migrate-to-postgresql.sql
    
  11. Start Red Hat Satellite.
    [root@satellite ~]# rhn-satellite start
    
The database is now migrated from an External PostgreSQL Database to an Embedded Database.