Migration of a large number of virtual machines between servers

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• How do I 'batch' closing of a large number of virtual machines on a single order?

  We have performance issues with some programs that a large number of machines virtual shutdown.  Steve Jin here mentions on his blog that there is a number of API and batch processing.  I can't find on the subject if and would just like to send a command to stop, a large number of virtual machines.  Multi-threading applications for judgment has not been effective or possible.

  If someone could point me to the right direction, I would be grateful.   Thank you!

  Sean Clark - vExpert 2009, VCPX3 - http://twitter.com/vseanclark - http://seanclark.us - http://vmunderground.com

  Hey Sean,

  I'm not familiar with batch API too many orders, but I'm guessing that you're referring to:

  Turning the power on

  • Single - PowerOnVM_Task

  • Multi - PowerOnMultiVM_Task

  Power off

  • Single - PowerOffVM_Task

  • Multi - as far as I know, no

  As you probably know, there are a lot of API command to power on a set of virtual machines, but there is not one to turn off. It maybe an internal/private API to power off the coast, but I have not heard/seen it.

  If your question is around Steve Jin VI Java API, maybe hit him up on top of this blog, you probably a more precise answer and if this isn't the case, I think he'll be able to help directly as well.

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

  William Lam

  VMware vExpert 2009,2010

  VMware VCP3, 4

  VMware VCAP4-DCA

  VMware scripts and resources at: http://www.virtuallyghetto.com/

  Twitter: @lamw

  repository scripts vGhetto

  Introduction to the vMA (tips/tricks)

  Getting started with vSphere SDK for Perl

  VMware Code Central - Scripts/code samples for developers and administrators

  VMware developer community

  If you find this information useful, please give points to "correct" or "useful".

• Help with Script to add Hot CPU/Mem to large number of virtual machines

  So I found these two functions of http://ict-freak.nl/2009/10/05/powercli-enabledisable-the-vm-hot-add-features/comment-page-1/#comment-14664

  He

  seems to be only for a unique virtual machine, but I need to set up

  their making hundreds of multiple servers.  Is it possible to implement

  foreach ($vm to $devVMs)

  $devVMs = c:\listofvms.txt

  in

  the script to point to a list of virtual machines, such as a list of Windows 2008 64-bit

  VMs, vms 32 bit Windows 2003 as another list etc. instead of making a virtual machine

  at the same time.

  The two functions are for features to add memory to warm and the VM OS per CPU.

  Function Enable-MemHotAdd ($vm) {$vmview = Get - vm $vm |} Get-view$ vmConfigSpec = New-Object VMware.Vim.VirtualMachineConfigSpec$ extra = New-Object VMware.Vim.optionvalue$ extra. Key = "MEM.hotadd" $extra. Value = "true" $vmConfigSpec.extraconfig += $extra$ vmview. ReconfigVM ($vmConfigSpec)}

  Function Enable-vCpuHotAdd ($vm) {$vmview = Get - vm $vm |} Get-view$ vmConfigSpec = New-Object VMware.Vim.VirtualMachineConfigSpec$ extra = New-Object VMware.Vim.optionvalue$ extra. Key = "vCPU.hotadd" $extra. Value = "true" $vmConfigSpec.extraconfig += $extra$ vmview. ReconfigVM ($vmConfigSpec)

  }

  Any help is greatly appreciated.

  You can save this script in a .ps1 file.

  After have connected you to the vCenter (Connect-VIServer), you run the script from the prompt PowerCLI.

  .\myscript.ps1
  

  It will read all the guestnames that you stored in the .txt file and for each of these calls to the function.

  If you need to address another group of guests you modify the contents of the .txt file and run the script again.

  ____________

  Blog: LucD notes

  Twitter: lucd22

• Number of virtual machines per server

  This number varies greatly with the type of workload and of (among other variables) network connectivity, but what would you say is a common number of virtual machines running on a particular server (NIC10 G ) platform? 10? 20? 40? The number of sockets/cores on this server?

  Any contribution is appreciated.

  Thank you

  Hey Ex,.

  This issue of $ 1 million has been requested several times before.  The answer is simple - there is no definitive answer.  There are so many variables that contribute to the number of virtual machines, you can run on a server:

  -number of Sockets
  -Core per socket

  -CPU speed

  -Density memory

  -Bandwidth allocated by host

  -Storage connectivity & bandwidth

  -Attributes VM & function of workload (amount of memory, CPU & disk by virtual machine)

  Although you can probably squeeze a lot more virtual machines per server with densities increased memory & CPU power, also increases your default domain name.  HA may be able to 'recover' virtual machines on a failed host, but how virtual machines are you willing to lose only once?  When sizing of your hosts, also the failover capabilities take into account.  Each of your cluster hosts should be able to tolerate the failure of at LEAST one host and meet all the requirements of memory & processor of the additional virtual machines now spread over the remaining hosts in the cluster.  This is why administrators does not often grow over 60% of the capacity of their hosts.  VMware uses a calculation of size "slot" to ensure you have adequate to your cluster failover capacity.

  As typical, I see regularly around the mark of 20 VM per server on a typical 2-socket server with 96 GB of memory and dual 10 G uplinks.  It is also good to think that most software licenses (VMware, Nexus 1000v etc.) is based on the counts of socket, and since the memory is going to be your first argument point - servers that can support large amounts of memory are usually an ideal choice.  B250 is perfectly placed to virtual workloads like this, while the B230 is a little firecracker with a bit more CPU power under its hood so you need.

  As vague as I was, I hope this starts your thought process

  Kind regards

  Robert

• Migrate a template or a virtual machine between Sites

  Hi, I have a number of virtual machines created in a UAT environment. I can convert these VMs to models OR leave it as what.

  The requirement is to migrate the models to other sites. There is network connectivity between sites, but this is a separate system of SAN. There are the servers in each site that can be used to point to one common share, i.e. a dump file area.

  Via vCenter, I can't see a mechanism to export a model/VM in the OVF format and via the plugin Converter it seems possible to save files to the virtual machine on the disk, but the format of the workstation. In addition, the OVF tool seems to complicated for our needs.

  What process is preferable to move machines between sites - I need the process to be simple as possible.

  Thank you

  good things!  I'm glad that you have built it.

• Report on the number of virtual machines by datastore

  Hello

  I use vFoglight 6.6.2. I try to have a report generated every week that contains the number of virtual machines running in the data store. But I don't know how to create a table of edge/report for these details.

  request for expert assistance.

  The following query gives you so all virtual machines on the specified data store

  Using the following mandatory input parameters:

  {VMWDatastore}: type foglight - 5:VMWDatastore

  Select objects of type Machine virtual VMware in parameter {VMWDatastore}

  root of {VMWDatastore} / virtualCenter/virtualMachineCollection/virtualMachines

  where:

  ({VMWDatastore} to /datastores and)

  (/ vmState/current/value is equal to "receiving")

  Like query UI setup will allow you to use it as a dashboard of entry.

  Try around with the request and let me know if this help.

  Best regards

  hEINER

• How to count the number of virtual machines on an ESXi server via command line

  I want to know the number of virtual machines running on ESXi. What is the command so that it...?

  "vim - cmd vmsvc/getallvms"

  This order list of the early running of the ESXi Server virtual machine, but I want the number (integer)

  Help, please...

  Thank you

  M@RK! V

  Hello

  You can use the PowerCLI command to get a VM number:

  SE connect-VIServer-Server "ESXi host or vCenter server.

  (Get-VM-location 'ESXi host') .count

  Elodie

• Number of virtual machines per cluster with New-VIProperty

  Hello

  I would like to get the number of virtual machines per cluster using New VIProperty like this:

  New-VIProperty - ObjectType VMHost-name NumberOfVMs'

  -The {($Args [0] |) value} Get - VM | Measure - Object). Count} '

  -Force

  Get-Cluster | Select Name, NumberOfVMs

  But I only get zeros.

  Can someone help me?

  Thank you

  Frédéric

  Take a look at my property NumberOfVms for Clusters.

• Maximum number of virtual machines by free ESXi hypervisor?

  Community of VMware,

  I just installed the free 5.5 ESXi hypervisor and I wonder if the same virtual machine limits apply to the stand-alone scenario as vCenter? Can I run actually 512 VMs? What, if any, is the maximum number of virtual machines, I can run on a free version of ESXi?

  From 5.5 ESXi limits most have been removed, but only a limit of 8 vCPU per VM remains. So if I'm wrong, the VM 512 mentioned for each host (see http://www.vmware.com/pdf/vsphere5/r55/vsphere-55-configuration-maximums.pdf) affect the free hypervisor.

  André

• While trying to see Planner installation and operation, the test in local mode, the EXECUTION fails with message "Waiting for the number of virtual machines to register.

  While trying to see installation and operation Planner, the test in local mode with only 1 VM the EXECUTION fails with message "Waiting for the number of virtual machines to register.

  There may be a lot of problems in the desktop VM. Agent service see Planner is not running in VM Office. You can check in the event viewer to see what kind of error occurs. The most usual error missing file IP.txt c; drive or harness IP in the IP.txt produce if there is.

• Number of Virtual Machines in a host

  Dear all,

  I am fairly new with vmware.  As a newbe, I have a lot of request for information on the virtual machine.  As a first step, I have a basic question:

  How we calculate the number of virtual machines that can be installed safely on a host computer.

  For example,.

  The host is with below configuration

  HP DL380 G7, E5645, (6core, 2.4 GHz, 12 MB L3, 80W)

  Dual processor

  48 GB of memory

  8 x 300 GB hard drive

  STD config

  For example, in the configuration above, how WIN2008R2, 8 GB servers can be loaded.

  Is it as 48 / 8 = 6 Machines?

  If so, what is the involvement of CPU cores?

  Your descriptive answer is much appreciated...

  Thanks in advance...

  Welcome to the community,

  This depends on the VM workload. With the material you mention I guess the limiting factor will be the RAM and not the CPU. What is important for this host is have you FBWC attached to the RAID controller to make it work in writeback mode!

  A note more: you will need a licensed version to run ESXi 5.x on this host. The free hypervisor does support up to 32 GB of physical memory.

  André

• VMware View 4.5 - number of virtual machines deployment through Virtual Center

  Hello

  After an update to VMware View 4.5 Solution, thanks to an automatic pool sliding the virtual Center creates now six machines at the same time.

  Before this update the VC never fired on two machines at the same time...

  It of Nice to have this indictment, but is it possible for me to configure the number of virtual machines created on same time?

  Thanks for your help

  Kind regards

  If you go into servers and change the login information from vCenter there is an Advanced tab.  Click this tab and you can set the maximum amount of concurrent provisioning operations you want.

  If you have found this device or any other useful post please consider the use of buttons useful/correct to award points

  Twitter: http://twitter.com/mittim12

• Is it possible to migrate a virtual machine between vcenter servers programmatically?

  Hi all

  My question is quite simple:

  -Is it possible to migrate a virtual machine between vcenter servers programmatically?

  Let's say we have two data centers:

  vcenter1

  -vm1

  -vm2

  vcenter2

  -vm3

  Is it possible to migrate vms between vcenter2 and vcenter1 programmatically? (or vice versa)?

  Also, I'm assuming that the appropriate VLAN and data warehouses across the different vcenters!

  Thank you

  Luis

  It is not possible, vMotion or migration live is in an instance of vCenter, it cannot be covered through two even if you have the data store accessible both vCenters and sets of the host. At best, you can unregister the virtual machine of vCenter 1 host and re-save as on vCenter 2 host, but once again, it is while the virtual machine is turned off.

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

  William Lam

  VMware vExpert 2009,2010

  VMware scripts and resources at: http://www.virtuallyghetto.com/

  Twitter: @lamw

  repository scripts vGhetto

  Introduction to the vMA (tips/tricks)

  Getting started with vSphere SDK for Perl

  VMware Code Central - Scripts/code samples for developers and administrators

  VMware developer community

  If you find this information useful, please give points to "correct" or "useful".

• Maximum number of virtual machines running?

  Is there a limit to the maximum number of virtual machines that you can run at the same time on the latest VMWare Workstation for Linux 64 - bit hard?

  I think I got 26 running right now, but my computer is reaching its limits, so I don't know if I'll be able to find the hard limit by just test it myself.

  Thank you

  -Carlos

  .. .right now but my computer is reaching its limits

  It is actually the limit. There is no license or other limit.

  André

• HELP - how to get the number of virtual machines on a data store?

  Looking at the inventory of the data store in the VI client, there are a "number of Virtual Machines:" according to the General information for the Summary tab... I'm looking for a script that retrieves this information for me...

  I started the script but I'm stuck... I am very new on this...

  Get-Datastore. WHERE-object {$_ .name - like "wlp" ' "} #this gives me all the data which are not local warehouses

  Could someone give an overview on how to script to retrieve the number of virtual machines on data warehouses...

  Thank you, Lee

  Sorry, something went wrong with the copy - paste

  Get-Datastore | where {$_.Name -like "vmfs*"} | Sort-Object -Property Name | %{$_ | select @{N="DSname"; E={$_.Name}},
                                                                        @{N="VMcount";E={($_ | Get-VM | Measure-Object).count}}}