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For implementing the proposed solution, all the blades in slots “b” and “d” should have NIC2 enabled with PXE and
have NIC2 first in the BIOS boot order. Blades in slots “a” and “c” need no configuration change and remain with
NIC1 enabled with PXE and first in the BIOS boot sequence.
Remote system management commands are used to change the BIOS settings. These commands can be run from
the cluster’s head node to make the above specified changes in the BIOS .
We use the racadm commands for these changes.racadm is a command line utility provided for Dell OpenManage
Server Administrator .
racadm commands use the iDRAC IP of the blade servers to make the changes. So, in order to allocate the static
iDRAC IP’s to all the servers and then make the desired BIOS changes, the following steps are needed. All the
scripts referenced in the steps below are attached with this blog.
1. Install the head node. This is the master node of the cluster and will be used to deploy all the blade servers as
compute nodes.
2. Create a multihomed interface eth0:0 with an IP 192.168.0.120/255.255.255.0 by executing the following script.
chmod +x network_config_mxl.sh