Administration and Diagnostics Utilities - Oracle Exadata Recipes: A Problem-Solution Approach - page 175

You can validate a cell.conf network configuration file by running the ipconf -verify command as displayed:

[root@cm01cel01 ~]# /opt/oracle.cellos/ipconf -verify \
> −conf /opt/oracle.cellos/cell.conf
Verifying of Exadata configuration file /opt/oracle.cellos/cell.conf
Done. Configuration file /opt/oracle.cellos/cell.conf passed all verification checks
[root@cm01cel01 ~]#

In general, an Oracle Exadata DMA would not manually invoke ipconf unless changing the server's networking
information.

■ recipes 10-6 and 10-7 provide detailed information about how to change Exadata server network information
and includes multiple references to ipconf .

Note

How It Works
The ipconf utility is installed in /opt/oracle.cellos on both the Exadata Storage Servers and Compute Nodes and
is symbolically linked to /usr/local/bin/ipconf . As mentioned previously, ipconf is called at system startup time to
set and validate your Exadata server network information. Specifically:

/etc./init.d/precell script is launched ( /etc./rc3.d/S08precell ). • At run level 3, the

/etc./init.d/precell calls /opt/oracle.cellos/cellFirstboot.sh.

•

/opt/oracle.cellos/cellFirstboot.sh checks for the existence of /opt/oracle.cellos/
cell.conf . If it does not exist, the network configuration will call /opt/oracle.cellos/
ipconf , which in turn calls /opt/oracle.cellos/ipconf.pl . The ipconf.pl Perl script will
supply a configuration menu from which you can set your network settings.

•

/opt/oracle.cellos/cell.conf does exist, /opt/oracle.cellos/ipconf.pl will read
/opt/oracle.cellos/cell.conf , configure the network per directives in cell.conf , and
handle a number of other network tasks.

• If

If, after your Exadata installation you wish to change network information, including IP addresses, DNS servers,
NTP servers, and so on, you would move a copy of your cell.conf file to a new location, validate it using the
ipconf -verify command, and then deploy using the command below:

# /opt/oracle.cellos/ipconf -force -newconf /tmp/new.cell.conf -reboot

In general, ipconf would be required only if changing network information.

■ Note please see recipe 10-7 to learn how to change Exadata network information in a supported manner.