Browsed by
Tag: OVM

Documentation bug in ovm for Exadata

Documentation bug in ovm for Exadata

A while ago a customer gave me a heads up about the “bug” concerning the default passwords for root and celladmin. I was thinking a bit further and I wondered if the “documentation bug” I found while adding a new OVM in the virtualised exadata is solved. The official documentation can be found here .

documentation_screenshot
documentation_screenshot

Then “Managing Oracle VM Domains on Oracle Exadata Database Machine” and then “Creating Oracle RAC VM Clusters” brings you to the point I want to warn you for.

All steps are correct, but the last one “Run all steps except for the Configure Cell Alerting step using the XML file for the new cluster. For most installations, the Configure Cell Alerting step is step 7. For example, to execute step 1, run the following command” might be a bit tricky. Why? I will show you.

When deploying the exadata, if you list the steps you will get this output:

$ ./install.sh -cf anonymous_customer.xml -l
 Initializing

1. Validate Configuration File
2. Create Virtual Machine
3. Create Users
4. Setup Cell Connectivity
5. Calibrate Cells
6. Create Cell Disks
7. Create Grid Disks
8. Configure Alerting
9. Install Cluster Software
10. Initialize Cluster Software
11. Install Database Software
12. Relink Database with RDS
13. Create ASM Diskgroups
14. Create Databases
15. Apply Security Fixes
16. Install Exachk
17. Create Installation Summary
18. Resecure Machine
$

But if you take the newly created xml for the new cluster:

$ ./install.sh -cf anonymous_customer_new_clu.xml -l
 Initializing

1. Validate Configuration File
2. Create Virtual Machine
3. Create Users
4. Setup Cell Connectivity
5. Calibrate Cells
6. Create Cell Disks
7. Create Grid Disks
8. Configure Alerting
9. Install Cluster Software
10. Initialize Cluster Software
11. Install Database Software
12. Relink Database with RDS
13. Create ASM Diskgroups
14. Create Databases
15. Apply Security Fixes
16. Install Exachk
17. Create Installation Summary
18. Resecure Machine
$

Do you spot the difference? I don’t.
I just want to say … If you create a new cluster, be careful with “Create Cell Disks”. I should recheck the logfiles, but the time I checked it lately, it was performing a drop of the celldisk before recreating it. So you can imagine what will happen to your other virtual machines. If you have an exadata on which I can try it, please let me know. I’m happy to check it out further 🙂