Get Esxi host name by vm name using pyvmomi

Import necessary modules from pyVim and pyVmomi libraries. SmartConnect is used for connecting to the ESXi host or vCenter, and vim contains the VMware Infrastructure (vSphere) model.

from pyVim.connect import SmartConnect, Disconnect
from pyVmomi import vim

• Define a function named get_vm_host that takes the virtual machine name (vm_name) and a service instance (service_instance) as parameters.

def get_vm_host(vm_name, service_instance):

• Retrieve the content of the service instance, which represents the entire vSphere inventory.

content = service_instance.RetrieveContent()

• Create a container view that includes all virtual machines in the inventory. It filters the view to include only objects of type vim.VirtualMachine.

container_view = content.viewManager.CreateContainerView(content.rootFolder, [vim.VirtualMachine], True)

• Retrieve a list of virtual machines from the container view.

vm = next((vm for vm in vm_list if vm.name == vm_name), None)

• Use a generator expression to find the virtual machine with the specified name (vm_name) in the list. The next function returns the first matching virtual machine or None if no match is found.

vm_list = container_view.view

• Check if a virtual machine with the specified name was found.

if vm is not None:

• Retrieve the host information for the virtual machine.

host = vm.runtime.host

• Return the host object.

return host

• Return None if the virtual machine with the specified name is not found.

return None

• Establish a connection to the ESXi host or vCenter using the SmartConnect function. Replace “your_host,” “your_username,” and “your_password” with your actual ESXi host or vCenter credentials.

si = SmartConnect(host="your_host", user="your_username", pwd="your_password", port=443)

• Specify the name of the virtual machine you want to find.

vm_name = "YourVMName"

• Call the get_vm_host function to get the host information for the specified virtual machine.

host = get_vm_host(vm_name, si)

• Print the result, indicating whether the virtual machine was found and, if so, on which host it is running.

if host: print(f"The virtual machine '{vm_name}' is running on the host '{host.name}'") else: print(f"Virtual machine '{vm_name}' not found.")

• Disconnect from the ESXi host or vCenter using the Disconnect function.

Disconnect(si)

Complete Code

from pyVim.connect import SmartConnect, Disconnect
from pyVmomi import vim

def get_vm_host(vm_name, service_instance):
    content = service_instance.RetrieveContent()

    # Creating a container view
    container_view = content.viewManager.CreateContainerView(content.rootFolder, [vim.VirtualMachine], True)

    # Retrieve all virtual machines in the container
    vm_list = container_view.view

    # Find the virtual machine by name
    vm = next((vm for vm in vm_list if vm.name == vm_name), None)

    if vm is not None:
        # Get the host of the virtual machine
        host = vm.runtime.host
        return host

    return None

# Connect to the ESXi host or vCenter
si = SmartConnect(host="your_host", user="your_username", pwd="your_password", port=443)

# Specify the virtual machine name
vm_name = "YourVMName"

# Get the ESXi host of the virtual machine
host = get_vm_host(vm_name, si)

if host:
    print(f"The virtual machine '{vm_name}' is running on the host '{host.name}'")
else:
    print(f"Virtual machine '{vm_name}' not found.")

# Disconnect from the server
Disconnect(si)