The below script performs SNMP queries to retrieve information about memory usage, hardware details, processor usage, and virtual machines hosted on the ESXi host. Adjust SNMP community string and OID definitions as needed based on your environment.

/* !/bin/bash

/* Usage: ./vmware_inventory.sh <ESXi_host_IP>

/* Check if IP address is provided
if [ -z "$1" ]; then
echo "Usage: $0 <ESXi_host_IP>"
exit 1
fi

/* Define ESXi host IP address
ESXI_HOST="$1"

/* SNMP community string
SNMP_COMMUNITY="public"

/* SNMP OID definitions
MEMORY_USAGE_OID="HOST-RESOURCES-MIB::hrStorageUsed.1"
HARDWARE_DETAILS_OID="VMWARE-MIB::vmwHwManufacturer.0"
PROCESSOR_USAGE_OID="HOST-RESOURCES-MIB::hrProcessorLoad.1"
VIRTUAL_MACHINES_OID="VMWARE-MIB::vmwVmName"

/* Function to perform SNMP query
snmp_query() {
snmpwalk -v2c -c "$SNMP_COMMUNITY" "$ESXI_HOST" "$1" | awk -F ": " '

'
}

/* Retrieve memory usage
MEMORY_USAGE=$(snmp_query "$MEMORY_USAGE_OID")

/* Retrieve hardware details
HARDWARE_DETAILS=$(snmp_query "$HARDWARE_DETAILS_OID")

/* Retrieve processor usage
PROCESSOR_USAGE=$(snmp_query "$PROCESSOR_USAGE_OID")

/* Retrieve virtual machines
VIRTUAL_MACHINES=$(snmp_query "$VIRTUAL_MACHINES_OID")

/* Display gathered information
echo "Memory Usage: $MEMORY_USAGE"
echo "Hardware Details: $HARDWARE_DETAILS"
echo "Processor Usage: $PROCESSOR_USAGE"
echo "Virtual Machines:"
echo "$VIRTUAL_MACHINES"

=======================================================================

/*# Define SNMP community string
const SNMP_COMMUNITY = "public";

/*# Define SNMP OID definitions
const MEMORY_USAGE_OID = "HOST-RESOURCES-MIB::hrStorageUsed.1";
const HARDWARE_DETAILS_OID = "VMWARE-MIB::vmwHwManufacturer.0";
const PROCESSOR_USAGE_OID = "HOST-RESOURCES-MIB::hrProcessorLoad.1";
const VIRTUAL_MACHINES_OID = "VMWARE-MIB::vmwVmName";

/*# Function to perform SNMP query
sub snmpQuery(host, oid)

/*# Retrieve memory usage
const memoryUsage = snmpQuery(node.ipAddress, MEMORY_USAGE_OID);

/*# Retrieve hardware details
const hardwareDetails = snmpQuery(node.ipAddress, HARDWARE_DETAILS_OID);

/*# Retrieve processor usage
const processorUsage = snmpQuery(node.ipAddress, PROCESSOR_USAGE_OID);

/*# Retrieve virtual machines
const virtualMachines = snmpQuery(node.ipAddress, VIRTUAL_MACHINES_OID);

/*# Output gathered information
console.print("Memory Usage: " + memoryUsage);
console.print("Hardware Details: " + hardwareDetails);
console.print("Processor Usage: " + processorUsage);
console.print("Virtual Machines: " + virtualMachines);