Specifications

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PXELINUX
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Server with a hardware configuration that is supported with your version of ESXi. See the Hardware
Compatibility Guide at http://www.vmware.com/resources/compatibility/search.php.
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Network security policies to allow TFTP traffic (UDP port 69)
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(Optional) Installation script, the kickstart file. See “About Installation and Upgrade Scripts,” on
page 184.
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Network adapter with PXE support on the target ESXi host
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IPv4 networking. IPv6 is not supported for PXE booting.
Use a native VLAN in most cases. If you want to specify the VLAN ID to be used with PXE booting, check
that your NIC supports VLAN ID specification.
Procedure
1 Create the /tftpboot/pxelinux.cfg directory on your TFTP server.
2 On the Linux machine, install PXELINUX.
PXELINUX is included in the SYSLINUX package. Extract the files, locate the pxelinux.0 file and copy
it to the /tftpboot directory on your TFTP server.
3 Configure the DHCP server to send the following information to each client host:
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The name or IP address of your TFTP server.
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The name of your initial boot file. This is pxelinux.0.
4 Copy the contents of the ESXi installer image to the /var/lib/tftpboot directory on the TFTP server.
5 (Optional) For a scripted installation, in the boot.cfg file, add the kernelopt option on the line
following the kernel command, to specify the location of the installation script.
Use the following code as a model, where XXX.XXX.XXX.XXX is the IP address of the server where the
installation script resides, and esxi_ksFiles is the directory containing the ks.cfg file.
kernelopt=ks=http://XXX.XXX.XXX.XXX/esxi_ksFiles/ks.cfg
6 Create a PXE configuration file.
This file defines how the host boots when no operating system is present. The PXE configuration file
references the boot files. Use the following code as a model, where XXXXXX is the build number of the
ESXi installer image.
DEFAULT menu.c32
MENU TITLE ESXi-5.x.x-XXXXXX-full Boot Menu
NOHALT 1
PROMPT 0
TIMEOUT 80
LABEL install
KERNEL mboot.c32
APPEND -c location of boot.cfg
MENU LABEL ESXi-5.x.x-XXXXXX-full ^Installer
LABEL hddboot
LOCALBOOT 0x80
MENU LABEL ^Boot from local disk
7 Name the file with the MAC address of the target host machine: 01-mac_address_of_target_ESXi_host.
For example, 01-23-45-67-89-0a-bc.
8 Save the PXE configuration file in /tftpboot/pxelinux.cfg on the TFTP server.
vSphere Upgrade
162 VMware, Inc.