Page History

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• VirtualBox 6 on Linux and OS X
• VMWare Fusion 7 and 8 on OS X
• VMWare ESXi 6.5
• Qemu 2.4.0.1 on Linux and OS X
• Hyper-V on Windows Server 2008r2, 2012 and Windows 10 (Only Generation 1 Hyper-V virtual machine is supported at the moment)
• Xen Project 4.6.5Xen Server 7.1

Warning: Hypervisors that provide paravirtualization are not supported.

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• Qemu/KVM:
  • Network: Virtio, E1000, vmxnet3 (optional)
  • Disk: IDE, Sata, Virtio
  Xen Project:
  • Network: E1000, rtl8193, netfront
  • Disk: IDE, Sata

• VirtualBox
  • Network: E1000, rtl8193
  • Disk: IDE, Sata, SCSI, SAS

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#!/usr/bin/env python
# -*- coding: utf-8 -*-

import sys,time
from pyVim import connect
from pyVmomi import vmodl,vim


def runInline(content,vm,creds,source):
    ''' Execute script source on vm '''
    if isinstance(source, list):
        source = '\n'.join(source)
    ps = vim.vm.guest.ProcessManager.ProgramSpec(
                programPath = 'console',
                arguments = source
        )
    return content.guestOperationsManager.processManager.StartProgramInGuest(vm,creds,ps)

def runFromFile(content,vm,creds,fileName):
    ''' Execute script file located on CHR '''
    ps = vim.vm.guest.ProcessManager.ProgramSpec(
                programPath = 'import',
                arguments = fileName
    )
    return content.guestOperationsManager.processManager.StartProgramInGuest(vm,creds,ps)


def findDatastore(content,name):
    sessionManager = content.sessionManager

    dcenterObjView = content.viewManager.CreateContainerView(content.rootFolder, [vim.Datacenter], True)

    datacenter = None
    datastore = None
    for dc in dcenterObjView.view:
        dstoreObjView = content.viewManager.CreateContainerView(dc, [vim.Datastore], True)
        for ds in dstoreObjView:
            if ds.info.name == name:
                datacenter = dc
                datastore = ds
                break
        dstoreObjView.Destroy()

    dcenterObjView.Destroy()

    return datacenter,datastore

def _FAILURE(s,*a):
    print(s.format(*a))
    sys.exit(-1)

#------------------------------------------------------------------------------#

if __name__ == '__main__':
    host = sys.argv[1] # ip or something
    user = 'root'
    pwd = 'MikroTik'
    vmName = 'chr-test'
    dataStoreName = 'datastore1'



    service = connect.SmartConnectNoSSL(host=host,user=user,pwd=pwd)
    if not service:
        _FAILURE("Could not connect to the specified host using specified username and password")

    content = service.RetrieveContent()


    #---------------------------------------------------------------------------
    # Find datacenter and datastore


    datacenter,datastore = findDatastore(content,dataStoreName)

    if not datacenter or not datastore:
        connect.Disconnect(service)
        _FAILURE('Could not find datastore \'{}\'',dataStorename)


    #---------------------------------------------------------------------------
    # Locate vm


    vmxPath = '[{0}] {1}/{1}.vmx'.format(dataStoreName, vmName)
    vm = content.searchIndex.FindByDatastorePath(datacenter, vmxPath)

    if not vm:
        connect.Disconnect(service)
        _FAILURE("Could not locate vm")


    #---------------------------------------------------------------------------
    # Setup credentials from user name and pasword

    creds = vim.vm.guest.NamePasswordAuthentication(username = 'admin', password = '')


    #---------------------------------------------------------------------------
    # Run script

    pm = content.guestOperationsManager.processManager

    try:
        # Run script
        src = [':ip address add address=192.168.0.1/24 interface=ether1;']
        jobID = runInline(content, vm, creds, src)

        # Or run file (from FTP root)
        # jobID = runFromFile(content,vm,creds, 'scripts/provision.rsc')


        #---------------------------------------------------------------------------
        # Wait for job to finish

        pm = content.guestOperationsManager.processManager
        jobInfo = pm.ListProcessesInGuest(vm, creds, [jobID])[0]
        while jobInfo.endTime is None:
            time.sleep(1.0)
            jobInfo = pm.ListProcessesInGuest(vm, creds, [jobID])[0]

        if jobInfo.exitCode != 0:
            _FAILURE('Script failed!')
    except:
        raise
    else:
        connect.Disconnect(service)

Xen

Network, disk, memory and OS info is reported to hypervisor every 30 seconds

• On older hosts (pre 21.06.2017) only the first ipv4 address assigned to the interface is visible

Provisioning

Base-64 encoded strings written to (domain local) xenstore path ('vm-data/provision/script') are decoded and interpreted a script-text. Status ('ready', 'running', 'error') is reported in 'vm-data/provision/script/status'. Scripts are accepted only if 'status' != 'running'. Base 64 encoded script output (if any) is written to 'vm-data/provision/script/otuput'.

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KVM
QEMU guest agent is available. Supported agent commands can be retrieved by using guest-info command. Host-guest file transfer can be performed by using guest-file-* commands. Guest networking information can be retrieved by using the guest-network-get-interfaces command.
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