ESX as a virtual machine on an ESX host

Similar Questions

• Virtual MACHINE running on two hosts after hung vmotion

  Hello

  I started a VMotion of virtual machine by host A to host B. The request got hung at 65% for several hours. I restarted the VCenter service, registered to vsphere. The process was running is longer, but now the virtual machine appears on the Host A and host B.

  The Cluster-'Virtual Machine' tab displays the virtual machine and cycles between two hosts seconds couple?

  Anyone seen this before? How can I fix it? Thanks in advance!

  First of all, it's impossible.  A virtual machine cannot be in 2 places at once.  It's just in the transition.

  Secondly, vCenter manages the process but it doesn't actually do the vMotion, ESX hosts are.

  What is happening is life of the virtual machine on the host only until the end of the evolution towards the other host (somewhere around 97%) when the transfer is confirmed with the new host.

  Best thing to do is to restart the services of management on both hosts and see if that frees the vMotion.

• To access the virtual machines of two different hosts

  Greetings,

  I have a question that I can't find the answer to. I am setting up a virtual machine environment small and need to better understand the architecture behind it.

  2 host servers

  1 iSCSI Equallogic San (target)

  I have installed 35i ESX and runnning on two physical hosts. .205 et.206

  I created a data store on my SAN to host my 'model' VM.

  De.205, I can see the data on the SAN network store and browse the virtual machine I (using VMConverter) moved there.

  De.206, I can see the data store on the SAN, but when I sail, I do not see the same information. I see no. VM.

  MY understanding is that using the SAN to store the virtual machine and that I would make the hosts of this data store to run the virtual machine. But the way in which it seems that I have the virtual machine configured on both hosts, always pointing the data store on the San but again using converter, copy de.205 vers.206.

  What don't understand me or that I don't understand.

  Your help is appreciated.

  Welcome to the VMware community forums.   If you have configured things Ok, you will be able to browse the data from these two hosts store and see the same content.  You can register the virtual computers on both hosts.  For an existing VM on the host from 1, you find the data on the host of the 2nd store, right-click on the VMX file and select Add to the inventory.  Have you thought to vcenter server?  It's going to do it is a lot easier.

• What is the interval of time between the virtual machine Linux and ESXi host synchronization?

  I have ESX5.0 with a centos6 installed on this linux virtual machine.

  After the installation of vmware for Linux virtual machine tools, I activated the time synchronization between the virtual machine linux and ESXi host through vmware-toolbox-cmd.

  I wonder what is the interval of time between the virtual machine linux and ESXi host synchronization? If I quickly time OS system, when the OS system time will sync back to the ESXi host?

  According to http://www.vmware.com/files/pdf/techpaper/Timekeeping-In-VirtualMachines.pdf:

  By default, the demon checks the guest only once per minute operating system clock.

  However, depending on whether the guest is behind or in front of the result is different. So, please read the section "periodic synchronization" (at least) in the document mentioned above.

  André

• Connect a virtual machine to a new host

  I have 2 servers ESX (vSphere 4.0) and a Dell / EMC CX4-120 SAN.

  My 10 virtual machines are all located on the SAN within different LUNS and data warehouses.

  One of my ESX servers failed and 1 VM is still connected to it, because it has not migrated during the blackout.

  How can I reinstall this virtual machine to the host of work ESX Server 2 and turn on again?

  Hello

  First of all, certify if this virtual machine is turned off.

  If this virtual machine is turned on, try closed with command line - http://kb.vmware.com/kb/1004340

  and if the other host see all LUNS where this virtual machine have all disks, you can do:

  Click on desired host

  Configuration

  storage

  Browse DTX200

  Right-click in the VMX

  Add to the inventory

  PowerOn.

  Good luck

  Please, do not forget the points of call of the "useful" or "correct" answers

  Mauro Bonder - moderator

• Restrict 2 virtual machines on the same host at any time.

  Hi all

  I am implemented in virtual machines as an HA pair and would limit the virtual machines to be on the same ESX host, someone did that? or can someone point me in the right direction?

  Thank you

  Amar

  Hi Amar,

  You will need to create a VM host affinity rule but this DRS must be activated, see page basic guide System Admin. 72 of link http://www.vmware.com/pdf/vsphere4/r41/vsp_41_resource_mgmt.pdf

  If you have found this or other useful information, please consider awarding points to 'Correct' or 'useful '.

  F10

  VCP3, VCP4, HP UX CSA

  http://KB.VMware.com/

• vCenter Server 4 as virtual machine by vSphere, ESX4 host

  Hello

  I would like to ask if anyone has tried to do.

  I create a virtual machine to run my vCenter Server 4 under a new brand, vSphere, ESX4, armed with other VM.

  My question is, can I use vCenter Server 4 and the same vSphere, ESX4 host where the vCenter Server 4 is be managed host?  Is this possible.

  I did this, but in the ESX and vcenter 4 installation guide his page 16 of the document makes it clear that: "the vCenter Server system is a physical machine or the virtual machine with access to a database taken in charge. The vCenter Server system must meet specific requirements. Also, make sure that the vSphere Client machines meet the hardware requirements. »

  Here is the link to the document: http://www.vmware.com/pdf/vsphere4/r40/vsp_40_esx_vc_installation_guide.pdf

  But if you plan to do that you have to ensure three points (shown in this link: http://www.vladan.fr/three-main-reasons-to-run-virtual-center-server-as-a-virtual-machine/):

  1. Disable DRS (level of automation of change!) for your VirtualCenter VM and make sure the document where the VirtualCenter Server (my suggestion would be the first area of ESX)

  2. Enable HA for the VirtualCenter server and set the boot at high priority

  3. Make sure the VirtualCenter server gets sufficient resources by defining actions

  There is also another useful post that describes the advantages of the virtual centre running as a virtual machine:

  http://www.vmwareinfo.com/2009/01/VMware-VirtualCenter-as-virtual-machine.html

• Problem with networking when having multiple virtual machines on a single host

  Since the implementation of ESX 3.5i server on PowerEdge 1850 Server I had network problems. It took a large upstream of the violin - do not do something specific - but finally I could persuate a VM to talk to the outside world.

  Virtual machines have always been able to ping other virtual machines and physical NETWORK card to the host (with a static IP address only), however with a bit of deactivation/activation etc I could possibly get it connected. I have exactly the same symptomsusing the two Windows XP and Redhat, both with VM Tools installed.

  If big, I can get the virtual machines connected, *however * every time I managed to connect a computer to the outside network, she will knock off either a return to the State where I can ping only the other VMs and Teddy.

  I tried them in different port groups as well as in different vSwitches with a separate Teddy, but exactly the same problem.

  I thought it was just my ignorance, however after thorough reading and wasting time trying different combinations, I started to think this is a hardware incompatibility or an ESX installation problem.

  Please please please, if someone can help solve the problem, or diagnose if my suspicions are correct.

  I enclose my last combination of configurations!

  Thanks in advance.

  Run 'show port-security' on the switch and see what you have.  You can also view the current configuration of the port connected to an esx.  A switch will remove any doubt relating to port config differences type.

  -KjB

  VMware vExpert

• Number max of virtual machines using vGPU by host

  What is the maximum number of virtual machines per host that can use a vGPU? Unfortunately the "Maximum of Configuration" doc for vSphere does not include this piece of information.

  -> I understand that this also depends on the number of NETWORK adapters you can fit into a server. So I'm just interested to understand if there is no limitation of vSphere.

  Thank you!

  The maximum number of vGPU VMs depends largely on the server platform and the number of physical GPU.  Many servers are supported GPU two PCIe x 16. vSphere 6.0 supports maximum 16 physical GPU (e.g. Four GRID K1) but not many servers support this configuration now... Most vGPU VMs we tested on a single system is 96 through three GRID K1 GPU physics with profile K120Q.

• Best way to migrate virtual machines to new ESXi hosts with a different configuration of networking.

  We currently have a cluster of 6 Dell machines that move VM 120 or so on ESXi 5.5. Networking consists of a dVswitch with 6 uplinks that map to 6 x 1gig physical NETWORK adapters on each host ESXi... These are grouped into 3 trunks / gal, so we have 2 GB by SHIFTING of the bandwidth and failover. The LAGS are configured as follows:

  LAG1

  Traffic to our (NFS) shared data store and management of ESXi. (vmk0)

  LAG2

  Access to the network of the VM - groups of different ports on different VLANS

  LAG3

  vMotion (vmk1)

  We just bought 6 new Dell machines that have connections fiber 2 x 10gig each. The idea is to bring together in a 20Ggig LAG by machine that will handle all of the traffic, so traffic NFS data store, network traffic from the VM, vMotion and traffic management ESXi.

  
  

  What is the best way to migrate the virtual machine in the cluster existing to the new machines? Many of the virtual machine are essential, so we cannot stop time.

  
  

  Can I create the new DELAY on existing dVswitch and put it as an auxiliary card? I'll be able to do it for all 3 of the above both above LAGS?

  
  

  Thanks for the info Alistar, it's almost here. The bit that was me stumping was that after establishing a new dVswitch I received messages that the new dvSwitch was not reachable on the old host, when I tried to migrate the virtual computer.

  The solution (with the permission of VMware Support) was that I need to add the two dVswitches to one of the old hosts, then assign a physical alternative on this host uplink to a temporary 3 uplink on the new dVswitch. I then tag all the relevant VLAN that uplink.

  This way I can first migrate the virtual machine to the new dVswitch networking so I can move the computer to the new cluster.

  Obviously I can only migrate from old to new cluster with a single host. each virtual machine must be a double for the host with 2 switches, and then to the new cluster. I also had to have the two dVswitches to the same version.

  Fortunately, I had a physical rising spare on the hosts of the old, otherwise I would have had to break one of the trunks and re-use of one of these uplinks.

  Oh and be aware, impossible to use the same names for groups of ports 2 DV switches, they must be unique!

  Nick

• Replicate a virtual machine between an Intel host computer and an AMD

  Does anyone has experiences with using vSphere replication to replicate a virtual machine between Intel server cluster and a cluster of servers AMD?

  I asked myself this question the other day and unfortunately I have Intel hosts in my lab to test/demo so can not perform checks...

  I know that the only safe way to migrate a virtual machine from one host to Intel to a host of AMD is to use migration cold (ie the power off of the virtual computer), but that also applies if you use replication as a tool of "migration."

  I am aware vSphere replication can occur only if the source THAT VM is turned on, as it will make a copy of the initial/seed and then use CBT for replication of the changes... but because the goal of VM is turned off, I am correct in assuming that it is a form of "cold migration"?

  It works with the solution of Veem replication with VMware hosts.

  Reference:replication requirements. See the topic

  It seems to even work with Hyper V - replica.

  Hyper-V R2 2012 replica from INTEL to AMD? -Spiceworks

  In my view, this works for vSphere same replication as well. However, I will stay here with confirmation.

  --------------------------------------------------------------

  If it is useful, please give points as correct or useful

• Will be the virtual machine starts on another host (during the blackout) if he can't switch to Maintenance Mode?

  Hello

  We use a cluster with 2 5.1 ESXi hosts.  When attempting to place an ESXi host in Maintenance mode, he failed and said "not enough resources to satisfy configured level of failover for HA.

  We would like to know, just in case where one of these ESXi hosts failed, VMs will be start on another ESXi host (at least some) or all of them will be down (i.e. None of them start)?  If no virtual machine will be migrated, we will change our level of failover for HA.

  Thank you

  This occurs when you enable admission control on your HA cluster. When the failure of the host occurs and you have Admission control is enabled, it will let all market on the other host machines because it violates the constraints of availability.

  If you turn this off all VM is switched even if you do not have enough resources to accommodate all the s VM on a single host. On a long term, I would say that you have sufficient resources to allow this to happen. But for now, you can turn it off and try.

  

• Way to hide certain virtual machines on a common host networks?

  I hope it's one of those moments "duh" and there is an easy solution.

  Let says I have two clusters.  One of the piles is a lab with a copy of Active Directory environment used for testing purposes.  This cluster is now in a cycle of life, and I want to merge with the production cluster and remove former hosts of ESXi lab.  We add laboratory for the cluster of production networks and all is well for the laboratory of virtual machines that are not migrated on him.

  However, we do not want someone to accidentally assign a production VM to a network of laboratories and vice versa.  So when you go into edit a virtual machine, and then select the NETWORK card, there is a drop-down list that displays all the networks, including new laboratory that were just added networks.  I want to hide the network of laboratories of our production domain controllers and hide our production networks where the laboratory domain controllers.  But because they are all on the same cluster, it seems to me that all subnets are fair game for select in the drop-down list.  Or am I wrong?  Is there a way to lock the network to only certain virtual machines so that they do not show up for other virtual machines to choose?

  Thank you and sorry if there is an obvious solution to what I am about.

  SB

  Hey SB,.

  Not sure if this is possible, to be honest, as a virtual machine are all port groups, that it has the right. Now that I think of it, maybe create two different groups of seggregating production and test/lab put in place might work because you would not be able to connect to a virtual computer on a cluster to a portgroup on a host.

  Names must be different, but otherwise you could see similar across clusters names if the port groups may be two different entities altogether. Other than that, can't really invent any scenerios in which a portgroup wouldn't appear on a virtual machine if it is present on a host

  Concerning

  one

• VSphere 5.1: Virtual Machine does not share host RAM

  Hello

  I use a 5.1 Vsphere license (Vsphere 4 update)

  I am facing a problem after the upgrade, virtual machines do not RAM

  As if I have two machine with 2 GB of RAM in total then use of the RAM on the HOST becomes 4 GB but really active memory usage is about 1 GB only.

  It wasn't a problem in Vsphere 4 it shows an active memory as the HOST memory usage but in Vsphere 5 Virtual machine share not RAM and book full RAM when turned on.

  Maybe there's some settings to enable sharing of memory or to disable this full booking of RAM.

  Hello

  The changes are the VMkernel is using large pages to back up virtual memory pages.

  For more information, this article by Duncan will provide enough information and links to other articles on this topic:

  http://www.yellow-bricks.com/2011/01/26/re-large-pages-gabvirtualworld-frankdenneman-forbesguthrie/

  In short VMkernel will place pages issued by the VM in large pages on the physical memory to speed up the memory access. Large pages are used when the physical CPU that has functions EPT (Intel) or IVR (AMD).

• Backup of virtual machines on a remote host

  We have a number of standalone servers ESXi 4.1 in places remote, managed by 1 vCenter server and want to use the ghettoVCBg2 script to save them. We do not want to deploy a vMA on each server ESXi, rather we want to use 1 vMA by geographical area to manage VM backups for all ESXi hosts in this area. There may be 2 or 3 hosts 2 or 3 virtual machines running in each region.

  In my lab, I have 2 hosts configured on nets under different. I have 1 vMA running on host 1 I want to manage backups for host 1 and 2. The two hosts have only local targets for storage, no NAS or SAN or iSCSI.

  I have 2 copies of the ghetto script, each adapted to the ESXi host needs the VMs system backed up. Everything seems to work fine, I can run the script on the host 1 to backup VMs on host 2 (by using the - server switch and any copy of the script) with local storage on the host 2 as the destination storage.

  My question is: what path the data takes when save? Given that the vMA's in one place and it's back up virtual machines in a different storage location that is local to the target ESXi host, the traffic is forwarded through the host that is running the vMA? or the host ESXi target handles the traffic locally so that it touches the WAN?

  When we look at the performance on the network adapters on the host and two virtual machines (the vMA and the VM being supported), I don't see any significant increase in traffic, but backups take about twice as long to complete.

  Is there anything else I can check without having to put a sniffer on the network to capture traffic? Some places have slow links between sites, some are even the radio links to reduce WAN traffic is a priority in some cases.

  Any suggestion would be appreciated.

  Backups are started remotely through vMA using the vSphere API, but the actual backups and as mentioned traffic occurs between your hosts and data warehouses is destination.

• How to keep a virtual machine on a different host to another load balancing virtual computer

  I have two virtual computers (servers) that I use for the application load balancing and I don't want nor server/VM to finish on the same host at any time.   Balancing of the DRS is used in our vSphere environment.  What is the best way to implement?

  Yes that's what I was talking about-

  You can control the placement of virtual machines on the hosts in a cluster using Affinity rules.

  You can create two types of rules.

  VM HOST affinity - specify affinity or anti-affinite between a group of VMS and a group of guests. An affinity rule specifies that the members of a selected group virtual machine DRS may or must be running on a specific host DRS group. An anti-home rule specifies that the members of a selected group virtual machine DRS cannot run on a specific host of the DRS group members.

  Affinity of machine VM-virtual - specify affinity or an anti-affinite between each of the virtual machines. A rule specifying the affinity causes DRS to try to keep the specified virtual machines together on the same host, for example, for performance reasons. With a rule anti-xxx, DRS tries to keep the specified virtual machines, for example, so that when a problem arises with a host, you do not lose the two virtual machines.

  Agic, the Guide to management resources - http://pubs.vmware.com/vsphere-50/topic/com.vmware.ICbase/PDF/vsphere-esxi-vcenter-server-50-resource-management-guide.pdf Page 75 for more information-