Linux Enterprise Cluster: Build a Highly Available Cluster with Commodity Hardware and Free Software

You are now ready to start the linuxconf utility with the command:

#linuxconf

A welcome screen appears, and you need to click QUIT (or press the TAB key to highlight QUIT and press ENTER) to start using linuxconf.

Once you are past this screen, you can now use the arrow keys on your keyboard and press ENTER until you are at the following submenu:

• Config

  • Networking

    • Client tasks

      • Host name and IP network devices

Pressing ENTER on "Host name and IP network devices" will bring up the screen that allows you to enter the following information to enable your NIC.

(First press the SPACE bar while on the "[ ] Enabled" line of the proper "Adaptor" section—Adaptor numbers should be the same as the eth device numbers to make things clear.)

Primary name + domain

• Enter a registered DNS host name if you have one for your system. This field is not required. (Most hosts within the Linux cluster will not have, or need, DNS registered host names.) However, if you are running sendmail or lpd on your cluster nodes, your host should have a name, and its IP address should be in the local /etc/hosts file on each cluster node.

Aliases (opt)

• Optional host name aliases for this machine.

IP address

• The IP address you want to use for the NIC.

Netmasks (opt)

• All of the hosts in your network should use the same netmask. The examples in this book (for the Linux clustered computers) are using 255.255.255.0 (meaning only the last byte is used for the host IP address— the first three bytes contain the network portion of the address).

Net device

• Enter the eth device number you determined above into this field. For example:

  eth1

Kernel module

• Enter the name of the kernel module. Here are a few examples:

  For the Intel Ethernet Pro Card, you might use:

  eepro100

  For the old 3COM 3C509 card, you can use:

  3c509

  Another 3COM driver for 3c59 series network cards is:

  3c59x

I/P port (opt)

• You can take the guesswork out of the eth device name mappings by entering the base address from the lspci -v command in this field.

• As you quit out of linuxconf, tell the utility to activate your changes.