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If you are upgrading and if you use the same installation directory in both installation processes, the Collector server files located in these directories remain intact.
Migrating Collector server files means copying the Collector server files (located in the preceding directories) from the previous release to the new one.
During the installation process, you are given the option to migrate the Collector server files. If you are using different installation directories and if you want these files automatically copied to their respective locations under the new installation directory, enter “Yes” when prompted. If you choose “No,” you can use the collector_migrate
tool to migrate these files at a later time.
Note that if you are using the same installation directory, file migration is not applicable.
Upgrading the Collector server database means that the existing /<install_directory>/etc/collector/server/db-persistence/DiscoveryEngineImplementation.db
file is upgraded with information from the new release, such as with new default values and column headings.
Except for new installations, when you start the web server, a backup directory containing the previous release's database is automatically created in /<install_directory>/etc/collector/server/db-persistence
. Also when you start the web server, database upgrades occur automatically. Since the installation process automatically starts this server, the backup directory creation and the database upgrade both occur automatically. This can prove useful if you need to later roll back the Collector server database.
The /opt/cariden/etc/sysconfig/wae-web-server.cfg
file contains a parameter for turning off this automatic upgrade feature. For information, see Before You Begin .
Note that this database (DiscoveryEngineImplementation.db) file has the potential to be both migrated and upgraded. Table 2-1 describes what happens to the database file, depending on the combination of answers given.
autoupgrade
parameter in the /opt/cariden/etc/sysconfig/wae-web-server.cfg
file.