Expert Oracle Exadata - Parent Directory

CHAPTER 8 CONFIGURING EXADATAConfiguring Storage CellsAdding new cells to your existing storage grid is a fairly simple process. There may be other ways tosimplify the process by cloning an existing storage cell, but we’ll take a look at the manual process so youcan see the commands and files involved. The process is as follows:1. Your new storage cells will come with the latest version of the Exadata cell softwareinstalled. Before you begin, check the version of software on the new cells andupgrade your old cells to match. The imageinfo command can be used to display thisinformation.2. Locate the cellinit.ora file on one of your old cells and copy it over to the new cells.Modify the cellinit.ora file on the new cells and change the ipaddress1 field to theprivate InfiniBand address of the cell. Login as the root account when configuring thestorage cell. The $OSSCONF environment variable should point to the location of thecorrect cellinit.ora file.3. Update the /etc/hosts file with the contents of the priv_ib_group file generated fromDBM Configurator. Use the hosts file on one of your other storage cells as a guide. Itis very important not to remove comments such as the following:#### BEGIN Generated by Exadata. DO NOT MODIFY ####4. Reboot the new cells and verify that they restart properly.5. Verify that the cell services are running using the CellCLI command list cell. If thecell services are down you may see an error such as this:CELL-01514: Connect Error. Verify that Management Server is listeningat the specified HTTP port: 8888.Cell Services must be stopped and started from the root or celladminuser accounts. The following commands may be used to manually shutdownand startup the services:CellCLI> alter cell shutdown services all;CellCLI> alter cell startup services all;6. Configuring the storage cell is done using the ALTER CELL command. For examplestorage cell alert notification can be configured using the following command:ALTER CELL smtpServer='mail.ourcompany.com', -smtpFromAddr='Exadata@ourcompany.com', -smtpFrom='Exadata', -smtpToAddr=''all.dba@ourcompany.com,all.sa@ourcompany.com'', -notificationPolicy='critical,warning,clear', -notificationMethod='mail,snmp'7. Your current cell configuration may be displayed using the LIST CELL DETAILcommand. Once you are finished configuring the cell, stop and restart the cellservices to pick up the new settings.8. Configure the cell smart flash cache using the CREATE FLASHCACHE ALL command.9. Configure all cell disks using the CREATE CELLDISK ALL command.272