### ESX Installer Boot Options Example

Source: https://techdocs.broadcom.com/us/en/vmware-cis/vsphere/vsphere/9-0/esx-installation-and-setup/installing-esxi/installing-esxi-by-using-a-script/scripted-esxi-installation/enter-boot-options-to-start-an-installation-or-upgrade-script.html

This example shows the boot options you can type at the ESX installer prompt to initiate a scripted installation or upgrade. It includes the kickstart file location and network configuration parameters.

```bash
ks=http://00.00.00.00/kickstart/ks-osdc-pdp101.cfg nameserver=00.00.0.0 ip=00.00.00.000 netmask=255.255.255.0 gateway=00.00.00.000
```

--------------------------------

### Configure ESX Kickstart Installation Script

Source: https://techdocs.broadcom.com/us/en/vmware-cis/vsphere/vsphere/9-0/esx-installation-and-setup/installing-esxi/installing-esxi-by-using-a-script/installation-and-upgrade-scripts-used-for-esxi-installation/about-the-default-ks-cfg-installation-script.html

A sample ks.cfg file demonstrating how to accept the EULA, set a root password, define disk installation targets, and configure network settings. It also includes an example of a post-installation Python script to log completion time.

```Kickstart
# Accept the VMware End User License Agreement
vmaccepteula

# Set the root password for the DCUI and Tech Support Mode
rootpw myp@ssw0rd

# Install on the first local disk available on machine
install --firstdisk --overwritevmfs

# Set the network to DHCP on the first network adapter
network --bootproto=dhcp --device=vmnic0

# A sample post-install script
%post --interpreter=python --ignorefailure=true
import time
stampFile = open('/finished.stamp', mode='w')
stampFile.write( time.asctime() )
```

--------------------------------

### Customization Script Example (Shell)

Source: https://techdocs.broadcom.com/us/en/vmware-cis/vsphere/vsphere/9-0/vsphere-virtual-machine-administration/managing-virtual-machinesvsphere-vm-admin/customizing-guest-operating-systemsvsphere-vm-admin/create-and-manage-customization-specificationsvsphere-vm-admin/create-and-manage-customization-specificationsvsphere-vm-admin.html

This script demonstrates how to handle 'precustomization' and 'postcustomization' tasks within a guest operating system customization process. It checks the first argument passed to the script to determine whether to execute pre- or post-customization logic.

```shell
#!/bin/sh
if [ x$1 == x"precustomization" ]; then
echo Do Precustomization tasks
elif [ x$1 == x"postcustomization" ]; then
echo Do Postcustomization tasks
fi 

```

--------------------------------

### Install GPU Graphics Card VIB on ESX Host

Source: https://techdocs.broadcom.com/us/en/vmware-cis/vsphere/vsphere/9-0/setup-your-environment-for-vsga.html

This command installs the GPU graphics card VIB (vSphere Installation Bundle) files on an ESX host. Ensure you have the correct VIB file path. This is a prerequisite for enabling vSGA.

```bash
esxcli software vib install -v $PWD/VendorName-vsga-driver_x.y.z-1OEM.a.b.c.vib
```

--------------------------------

### Example Workflow for Manual TLS Customization

Source: https://techdocs.broadcom.com/us/en/vmware-cis/vsphere/vsphere/9-0/vsphere-security/managing-tls-protocol-configuration-with-the-tls-reconfiguration-utility/managing-vsphere-tls/managing-vsphere-tls.html

A practical example demonstrating the transition from a default profile to a MANUAL profile, followed by the customization of elliptic curve groups.

```bash
[root@host1] esxcli system tls server get
[root@host1] esxcli system tls server set --profile MANUAL
[root@host1] esxcli system tls server get
[root@host1] esxcli system tls server set --groups=prime256v1:secp384r1
[root@host1] esxcli system tls server get
```

--------------------------------

### Verify Driver VM Status with crx-cli

Source: https://techdocs.broadcom.com/us/en/vmware-cis/vsphere/vsphere/9-0/setup-your-environment-for-vsga.html

This command verifies that at least one driver VM has started after configuring the ESX host for vSGA. It's a crucial step to ensure the graphics drivers are operational.

```bash
crx-cli list
```

--------------------------------

### Configure boot.cfg for UEFI and Scripted Installation

Source: https://techdocs.broadcom.com/us/en/vmware-cis/vsphere/vsphere/9-0/esx-installation-and-setup/installing-esxi/network-booting-the-esxi-installer/boot-the-esxi-installer-by-using-pxe-and-tftp.html

Configuration snippets for the boot.cfg file to define the installation prefix and specify the location of a kickstart script for automated deployments.

```text
prefix=ESX-9.x.x-xxxxxx
```

```text
kernelopt=ks=http://XXX.XXX.XXX.XXX/esxi_ksFiles/ks.cfg
```