Expert Oracle Exadata - Parent Directory

CHAPTER 8 CONFIGURING EXADATAProcessing section SCANGOOD : exa-scan.ourcompany.com resolves to 3 IP addressesERROR : exa-scan. ourcompany.com forward resolves incorrectly to 144.77.43.182 144.77.43.181144.77.43.180 , expected 144.77.43.87…Processing section COMPUTEGOOD : exadb01.ourcompany.com forward resolves to 10.80.23.1GOOD : 10.80.23.1 reverse resolves to exadb01.ourcompany.com.ERROR : 10.80.23.1 pingsThe output from CheckIP must contain no errors. If you see any errors in the output, they must becorrected before running OneCommand. Check the dbm.dat file and make sure you didn’t enter an IPaddress incorrectly, or mistype a hostname before opening a discussion with your networkadministrator. Sometimes a simple correction to a data entry field on the DBM Configurator is all that isneeded. If everything looks in order from your side, then send the dbm.out file to your networkadministrator for remediation.Step 5: FirstbootWhen the Oracle hardware engineers complete their installation, you are ready to boot up the computenodes and storage cells for the first time. When you are ready to begin configuring Exadata, open up theinternal KVM and power up one compute node or storage cell at a time. It’s not important which orderyou follow. The Firstboot process is not documented in the Oracle manuals, so we’ll take a minute to talkthrough the boot process and what happens the first time you boot the servers and storage cells.Every time a server boots up, the /etc/init.d/precel script is called at run level 3. This script callsthe /opt/oracle.cellos/cellFirstboot.sh (Firstboot) script. Firstboot determines whether or not thenetwork settings have been configured. This is undocumented, but it appears that it is triggered by theexistence of the /opt/oracle.cellos/cell.conf file. This file is created and maintained by the/opt/oracle.cellos/ipconf.pl script (IPConf) and contains all the information about your networkconfiguration. If the file exists, it is assumed that the system is already configured and the boot cyclecontinues. But if the file is not found, Firstboot calls IPConf and you are lead, interactively, through thenetwork configuration process. IPConf is used to set the following network settings for your computenodes and storage cells:• Name Server (DNS)• Time Server (NTP)• Country Code• Local Time Zone• Hostname• IP address, netmask, gateway, type, and hostname for all network devices. Thetype is required and used for internal documentation in the cell.conf file. Validtypes are Private, Management, SCAN, and Other.For example, the following listing shows the prompts for configuring the management network:260