Backup and Recovery - Oracle Exadata Recipes: A Problem-Solution Approach - page 225

You can also download the computeImageMaker zip file from edelivery.oracle.com , but
as your image needs to identically match your current version, we recommend obtaining
your file from Oracle Support.

After obtaining the computeImageMaker zip file from Oracle Support, stage it on one of
your surviving compute nodes and unzip the contents.

3.

4. Insert a blank USB drive into the server on the functional compute node on which you

staged the zip file above. Once the USB drive is plugged in, change directories to the dl360
directory where the computeImageMaker zip file was unzipped and untarred:

[root@cm01dbm01 dl360]# ls
boot doc grub initrd makeImageMedia.sh README_FOR_FACTORY.txt tmp
[root@cm01dbm01 dl360]#

Create your bootable image media by running the makeImageMedia.sh command: 5.

[root@cm01dbm01 dl360]# ./makeImageMedia.sh -dualboot no

6. When complete your external USB drive will contain a bootable, factory-default image that

you can use to restore your failed server to its factory defaults. Eject the USB drive from
your healthy server and optionally delete your dl360 directory and computeImageMaker
zip file.

7. Insert the USB drive into the compute node that you wish to reimage. Log in to the ILOM

console and power the server off. Then power it back on and perform the following tasks:

a. Press F2 when the BIOS screen is displayed to enter into the BIOS setup.

b. Press F8 to select a one-time boot order, and select your USB flash drive as the first

boot sequence.

c. Allow the system to boot.

d. When prompted, remove the USB drive and press Enter to power the server down.

At this point, the server will be restored to its Exadata factory defaults. It will have lost
all of its configuration details, including the IP addresses for all networks, DNS server
information, NTP server information, the hostname, the subnet mask, and the default
gateway.

8. Next, power on the server. This will automatically launch the Exadata configuration

routine and take you into a menu to configure your network information and other details.
After entering the appropriate values, allow the server to reboot and, once it is back up,
validate your network configuration.

9. Now, you need to validate several configuration files that are customized as part of a

normal Exadata installation. Specifically, you will have to validate and configure the
following:

•

/etc/security/limits.conf

•

/etc/hosts , /etc/oracle/cell/network-config/cellinit.ora

•

/etc/oracle/cell/network-config/cellip.ora

•

/etc/modprobe.conf