Databases Reference
In-Depth Information
Post-Change Procedures
After the network changes are complete, there are a number of optional tasks that you may have to perform.
For example, you should validate that your applications are functional, check your Enterprise Manager Grid
Control/Cloud Control targets, and so forth. This post-change set of steps could vary from organization to
organization.
How It Works
Changing Exadata IP addresses involves multiple steps on multiple nodes, many of which need to perform together to
ensure a functional Exadata Database Machine. Generally speaking, when you have a requirement to change Ethernet
IP address information on your Exadata nodes, you will likely be making changes to
all
of the components; for the
tasks required to perform a single compute node, storage cell, or other Exadata component, you can refer to the
appropriate section in the solution of this recipe.
This recipe focuses strictly on changing IP address and IP related network information. Changing server names
is not supported by this process, but you can change domain names on each node by changing the
HOSTNAME
line in
/etc/sysconfig/network
on each compute node and storage cell.
Changing IP addresses on Exadata servers is accomplished by using a variety of tools and processes and requires
a sound knowledge of Linux networking topics as well as the ability to confidently use utilities on your InfiniBand
switches, storage cells, and compute nodes. Specifically:
•
On the InfiniBand switches, you use ILOM shell commands to change your administration
network settings
•
On the KVM switch and PDU, you use the web interface
•
With the embedded Cisco switch, you use Cisco IOS commands
cell.conf
and use the
ipconf
utility to
•
On the storage servers, you make changes to your
change your network information
•
With the compute servers, you must manually reconfigure your IP addresses by editing Linux
network configuration files for your
NET0
,
NET1-2
, and
NET3
interfaces, and you use
ipmitool
to change your ILOM network addresses. Note that on the storage cells, these steps are
handled by running
ipconf
•
For your Oracle RAC resources, you use standard Oracle 11gR2 cluster management utilities
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