Get host id of connected ESXi

[Patrik Kernstock]

Hello,

I'm planning to write a simple script to set the host in maintenance mode, suspend all running VMs and then shutdown the standalone ESXi. I already found a helpful snippet from a other thread at https://groups.google.com/forum/#!topic/pysphere/AjWn8qbjqv0, but I'm not able to get it to work... My problem is, that the functions require a host object, but how can I get the host MOR of the current host, where I am connected to?

Commands like get_hosts() only does return empty arrays, so it may not help me that much:

>>> server.get_hosts()
{}

Thanks for any suggestions!

Regards,

Patrik Kernstock

[Patrik Kernstock]

Here's the complete code I currently have:

import sys

from pysphere import VIServer, VITask, VIMor

from pysphere.vi_virtual_machine import VIVirtualMachine

from pysphere.resources import VimService_services as VI

if len(sys.argv) < 4:

print "To less arguments"

sys.exit(1)

server = VIServer()

try:

    server.connect(sys.argv[1], sys.argv[2], sys.argv[3])

except:

    print 'Could not estabilish connection!'

    sys.exit(2);

def host_mor(mor):

    if not VIMor.is_mor(mor):

        return VIMor(mor, "HostSystem")

    return mor

def enter_maintenance_mode(host, timeout, evacuate_powered_off_vms=None):

    host = host_mor(host)

    request = VI.EnterMaintenanceMode_TaskRequestMsg()

    _this = request.new__this(host)

    _this.set_attribute_type(host.get_attribute_type())

    request.set_element__this(_this)

    request.set_element_timeout(timeout)

    if evacuate_powered_off_vms in [False, True]:

        request.set_element_evacuatePoweredOffVms(evacuate_powered_off_vms)

    task = server._proxy.EnterMaintenanceMode_Task(request)._returnval

    return VITask(task, server)

def shutdown_host(host, force):

    host = host_mor(host)

    request = VI.ShutdownHost_TaskRequestMsg()

    _this = request.new__this(host)

    _this.set_attribute_type(host.get_attribute_type())

    request.set_element__this(_this)

    request.set_element_force(force)

    task = server._proxy.ShutdownHost_Task(request)._returnval

    return VITask(task, server)

def suspend_all_powered_on_vms():

    for path in server.get_registered_vms(status='poweredOn'):

        vm = server.get_vm_by_path(path)

        vm.suspend(sync_run=False)

def migrate_powered_on_vms(from_host, to_host):

    from_host = host_mor(from_host)

    to_host = host_mor(to_host)

    props = ['runtime.powerState']

    oc = server._retrieve_properties_traversal(property_names=props,

                                               from_node=from_host,

                                               obj_type='VirtualMachine')

    for o in oc:

        powered_on = False

        if hasattr(o, "PropSet") and o.PropSet:

            for p in o.PropSet:

                if p.Name=='runtime.powerState' and p.Val == 'poweredOn':

                    vm = VIVirtualMachine(server, o.Obj)

                    vm.migrate(sync_run=False, host=to_host)

# Here I need to set the host (the esxi itself)

host = VIMor(server, "HostSystem")

print "Entering maintenance mode..."

task = enter_maintenance_mode(host, 10)

print "State: ",task.get_state()

print "Suspending all VMs..."

suspend_all_powered_on_vms()

print "Done"

print "Shutdown host..."

shutdown_host(host, True)

server.disconnect()

[Ujjwal Singh]

server.get_hosts().keys() will give you list of host mor objects

[Patrik Kernstock]

I know that .keys() will output the host MOR objects, because this works on a vCenter without problems. But on a standalone ESXi it won't work - like I wrote in the first post, it just returns an empty array.

[Patrik Kernstock]

Sadly I still didn't found anything helpful. Couldn't get it to work. Does anyone have a idea what's wrong?

[Lasha Tsatsashvili]

hello for my shutdown_host doesnt work and can u help me 
check my error on link : https://groups.google.com/forum/#!topic/pysphere/2ojmjBWFo3Y