Milestone 5.1: More Automation

Repo for the code used in this milestone Link

Linked Clone

def linked_clone_vm(si, vm_name, clone_name, silent):
    """Linked clone a VM
    
    param si (obj): The connection to vCenter
    param vm_name (str): The name of the VM to clone
    param clone_name (str): The name of the clone
    param silent (bool): Whether or not to print the VM info
    
    return None"""
    vm = search_vms(si, vm_name, silent)
    if vm.runtime.powerState == 'poweredOn':
        print(f"VM {vm_name} is powered on. Please power off the VM before cloning")
        power_off_vm(si, vm_name, silent)
        input("Press Enter to continue... Once the VM is powered off")
        linked_clone_vm(si, vm_name, clone_name, silent)
    else:
        relocate_spec = vim.vm.RelocateSpec()
        relocate_spec.diskMoveType = 'createNewChildDiskBacking'
        relocate_spec.pool = vm.resourcePool
 
        clone_spec = vim.vm.CloneSpec()
        clone_spec.powerOn = True
        clone_spec.location = relocate_spec
        try:
            clone_spec.snapshot = vm.snapshot.rootSnapshotList[0].snapshot
        except:
            print(f"VM {vm_name} does not have any snapshots. Taking a snapshot now")
            take_snapshot_vm(si, vm_name, 'Base', silent)
 
        vm.Clone(name=clone_name, folder=vm.parent, spec=clone_spec)
        print(f"Linked clone VM {vm_name} to {clone_name}")

Power On and Off

def power_on_vm(si, vm_name, silent):
    """Power on a VM
    
    param si (obj): The connection to vCenter
    param vm_name (str): The name of the VM to power on
    param silent (bool): Whether or not to print the VM info
    
    return None"""
    vm = search_vms(si, vm_name, silent)
    if vm.runtime.powerState == 'poweredOff':
        vm.PowerOn()
        print(f"VM {vm_name} has been powered on")
    else:
        print(f"VM {vm_name} is already powered on")

def power_off_vm(si, vm_name, silent):
    """Power off a VM
 
    param si (obj): The connection to vCenter
    param vm_name (str): The name of the VM to power off
    param silent (bool): Whether or not to print the VM info
    
    return None"""
    vm = search_vms(si, vm_name, silent)
    if vm.runtime.powerState == 'poweredOn':
        vm.PowerOff()
        print(f"VM {vm_name} has been powered off")
    else:
        print(f"VM {vm_name} is already powered off")

Take Snapshot

def take_snapshot_vm(si, vm_name, snapshot_name, silent):
    """Take a snapshot of a VM
 
    param si (obj): The connection to vCenter
    param vm_name (str): The name of the VM to take a snapshot
    param snapshot_name (str): The name of the snapshot
    param silent (bool): Whether or not to print the VM info
    
    return None"""
    vm = search_vms(si, vm_name, silent)
    if vm.runtime.powerState == 'poweredOff':
        vm.CreateSnapshot_Task(name=snapshot_name, memory=True, quiesce=False)
        print(f"Snapshot {snapshot_name} has been created for VM {vm_name}")
    else:
        print(f"VM {vm_name} is powered on. Please power on the VM before taking a snapshot")
        power_off_vm(si, vm_name, silent)
        input("Press Enter to continue... Once the VM is powered off")
        take_snapshot_vm(si, vm_name, snapshot_name, silent)

Restore Last Snapshot

def restore_last_snapshot_vm(si, vm_name, silent):
    """Restore the last snapshot of a VM
    
    param si (obj): The connection to vCenter
    param vm_name (str): The name of the VM to restore the snapshot
    param silent (bool): Whether or not to print the VM info
    
    return None"""
    vm = search_vms(si, vm_name, silent)
    if vm.runtime.powerState == 'poweredOn':
        print(f"VM {vm_name} is powered on. Please power off the VM before restoring a snapshot")
        power_off_vm(si, vm_name, silent)
        input("Press Enter to continue... Once the VM is powered off")
        restore_last_snapshot_vm(si, vm_name, silent)
    else:
        try:
            vm.snapshot.rootSnapshotList[-1].snapshot.RevertToSnapshot_Task()
            print(f"Snapshot {vm.snapshot.rootSnapshotList[-1].name} has been restored for VM {vm_name}")
        except:
            print(f"VM {vm_name} does not have any snapshots. Taking a snapshot now")
            take_snapshot_vm(si, vm_name, 'Base', silent)
            input("Press Enter to continue... Once the snapshot is taken")
            restore_last_snapshot_vm(si, vm_name, silent)
 

Delete Snapshot

def delete_snapshot_vm(si, vm_name, snapshot_name, silent):
    """Delete a snapshot from a VM
    
    param si (obj): The connection to vCenter
    param vm_name (str): The name of the VM to delete the snapshot
    param snapshot_name (str): The name of the snapshot
    param silent (bool): Whether or not to print the VM info
    
    return None"""
    vm = search_vms(si, vm_name, silent)
    if vm.runtime.powerState == 'poweredOn':
        print(f"VM {vm_name} is powered on. Please power off the VM before deleting a snapshot")
        power_off_vm(si, vm_name, silent)
        input("Press Enter to continue... Once the VM is powered off")
        delete_snapshot_vm(si, vm_name, snapshot_name, silent)
    else:
        try:
            for snapshot in vm.snapshot.rootSnapshotList:
                if snapshot.name == snapshot_name:
                    snapshot.snapshot.RemoveSnapshot_Task(removeChildren=False)
                    print(f"Snapshot {snapshot_name} has been deleted for VM {vm_name}")
        except:
            print(f"VM {vm_name} does not have any snapshots. Taking a snapshot now")
            take_snapshot_vm(si, vm_name, 'Base', silent)
            input("Press Enter to continue... Once the snapshot is taken")
            delete_snapshot_vm(si, vm_name, snapshot_name, silent)

Delete VM

def delete_vm(si, vm_name, silent):
    """Delete a VM
    
    param si (obj): The connection to vCenter
    param vm_name (str): The name of the VM to delete
    param silent (bool): Whether or not to print the VM info
    
    return None"""
    vm = search_vms(si, vm_name, silent)
    if vm.runtime.powerState == 'poweredOn':
        print(f"VM {vm_name} is powered on. Please power off the VM before deleting")
        power_off_vm(si, vm_name, silent)
        input("Press Enter to continue... Once the VM is powered off")
        delete_vm(si, vm_name, silent)
    else:
        vm.Destroy_Task()
        print(f"VM {vm_name} has been deleted")

Exit Handler

def exit_handler(si):
    """Disconnect from vCenter
    
    param si (obj): The connection to vCenter
    
    return None"""
    si.content.sessionManager.Logout()
    print('Logged out!')