The host Isolation response

Similar Questions

• The host Isolation response / loss of iSCSI connectivity - what if scenario

  The other thread on automatic shutdown made me think at our facility:

  1. when our building lost power, we lose cooling and networking, but remains on our servers/UPS systems, as they are connected to a backup generator.

  2 Yah, so, it's not good, cooling is lost, and the servers are will heat up, then we must begin to stop them until the coolant has been restored.

  Our 2 ESX systems connect to our SAN via iSCSI - with the lost power, the SAN and the ESX servers are no longer speaks, so I turned off our ESX servers, until the coolant has been restored, as no negative consequences on the correct virtual machines?

  With the connection of networking\iSCSI lost between ESX servers and SAN, that State will be our being for most Windows virtual machines?  They're going to be trashed?  Or ESX has some kind of verification in place for this type of ailment?

  In our current situation, what would be the recommended host Isolation response parameter?

  Thanks for any idea,

  Chad

  Our 2 ESX systems connect to our SAN via iSCSI - with the lost power, the SAN and the ESX servers are no longer speaks, so I turned off our ESX servers, until the coolant has been restored, as no negative consequences on the correct virtual machines?

  It shouldn't - but this will depend on all wht that the VM, the operating system and the application were doing at the time of the accident-

  With the connection of networking\iSCSI lost between ESX servers and SAN, that State will be our being for most Windows virtual machines? They're going to be trashed? Or ESX has some kind of verification in place for this type of ailment?

  ESX does not check this condition - from your virtual machines is on the iSCSI SAN you will find crashed.

  If you find this or any other answer useful please consider awarding points marking the answer correct or useful

• Host isolation response Question

  So, there were a few questions recently in our company on the host isolation response works in vCenter server 4.1.  Given the descriptions on the options available to the virtual machine power on or at the bottom of the current virtual machine, how HA determines that an isolated host is really isolated and running compared to completely failed (offline)?

  Can someone explain in detail a bit more technical that what the VMware article pages kb explain works host isolation response?

  Reading of how insulation host configurations can be defined, if you set the parameters of insulation "leave the virtual machine running", in case of total failure of host (offline) the other cluster hosts not to try the virtual machine online on another host?  And it is recommended to set the response of isolation to "turn off" so that the other hosts in the cluster can bring the virtual machine online?

  I still don't understand how a host can be determined as 'remote' from the 'offline '.  Isolation is simply the communications network have failed and are virtual machine always happily along on the isolated host.  A host simply default and past in offline mode (power failure Physics for example) is a completely different scenario.  Locks are not released correctly (not be able to any type of response of isolation configuration) and the virtual machine is not running on the host offline

  To the HA cluster if communication is lost to a node of the cluster assumes that the node has failed and will be Jean-Marie to restart the virtual machine on nodes in the cluster of rremaining - locks are constantly updated so if the host is not responding is rather isolated that failed he'll again be refreshing locks on the VMDK files. and virtual machines does not start - it is this feature which allows the AP to work - because with what you describe HA would never--work

  In the scenario were the host disconnects and the virtual machine is not running and the response of isolation is set to "leave the virtual machine running" how other hosts in the cluster determin the host is really low?

  The other guests guess always the isolated host is really down and try to restart the VMs - isloated host system is the machine that will follow response of isolation parameters - either the vms on power or powered by letting off the coast

• vCenter 6 web gui - host isolation response

  Hello

  I was looking at the option of isolation of host and then noticed that he not there no "leave it on" option on vcenter 6 web gui (version 6.0.0 2656761). However, "leave it on" option is still available on the client. As you can see from the screenshots, I chose the option "leave on" on the heavy and used customer "turn off and restart the virtual machines ' option on web gui.

  I really appreciate if someone provides the details to clarify my confusion because I'm not sure what settings will apply in case of isolation of the host.

  
  

  Thank you

  AFAIK the "leave it powered on" in c# client is now called as "Disabled" in the Web Client, which means nothing do, don't react not if the host gets isolated.

  You say that you set the value "leave powered we" in c# client and then when you check the settings for the cluster in the Web Client, it displays "Power Off and restart VM?

  If so, no refreshing or reconnect to the web client result by displaying "Disabled" in the web client?

  I hope this helps.

• Host Isolation response - VM Shutdown / Restart

  Gents,

  I couldn't find answer to my question myself so maybe you can help me.

  Let's say we have cluster HA VSphere 4.1 with the default settings. On hosts loses the connection to the network and all the HA primary agents start 15 sec count down. The host of problem also begins his 15 sec timer and after 12 seconds, it tries to ping the default gateway and does not answer. So he decides that he is isolated. If the network connection is not restored within 15 s primary HA officers decide that host problems failed and try to restart the virtual machines, but they can do VMS files are always locked by host problem which just initiated the process of virtual machine downtime after 15 s time of isolation.

  So my question is how that VMs are restarted then if they are not be restarted the first time? Primary HA officers constantly try to restart on alternate hosts?  They try always to restart virtual machines even if the host of the problem can't stop for 300 s and then power off? This missing part of information is really boring

  Would be very grateful for any useful information.

  http://www.yellow-bricks.com/2010/06/30/How-does-das-maxvmrestartcount-work/

  All this kind of thing is also explained by the way in my next book! Should be available through my blog in a week.

  Duncan

  VMware communities user moderator | VCDX

  -

• Several Host Isolation

  Imagine a scenario where we had a HA of four nodes cluster spread on a campus with two nodes in one place and two in the other. What would the host isolation response if the network connection between the two sites has been lost?

  If we lose a host then the TI is known to be isolated after 12 years and then failed aftet 15s. If we lose two, however, nobody is isolated and I am assuming that nothing happens.

  Now; Imagine that we have warehouses of data which are all shared, but some are in one site and some are in the other. Guests running on local data warehouses would be unaffected. Guests who are running on data warehouses remote fails. The question is: what will happen to the hosts failed?

  Thank you

  Warren Barnes

  Before you answer this in detail, I want to make sure I'm clear on my assumptions:

  1. There are 4 hosts in the cluster, two on each side of the stretch. If this is the case, then all 4 hosts are primary. (The first 5 guests in any cluster are primary, so you get only secondary when there are 6 or more hosts).

  2 If the network fails between the two sites, storage will be split-brain as well? I guess that Yes, based on one of your comments.

  If, in view of the #1 site hosts A and B, and site #2 a hosts C a D...

  If, after the split between site 1 and 2, and B can still heart rhythm with each other, and C and D can pulse between them then there is no answer tried insulation. Answers insulation kick only in when a host can not with any of the other primitives of the heart rate, and it can also ping the address of isolation (usually the gateway (s)) for networks that host is on.

  So what happens is that A & B site 1 to conclude that C & D at site 2 have failed. And vice versa. A and B will try to power - on the virtual machines that are running on C and D, even for C & D - they will try and power on virtual machines that have been on A and b. Now, because the storage of some virtual machines can be found at site 1 and storage other virtual machines are at site 2, some of the power-ons may fail because the storage is not accessible. But as A & B will attempt to power on the set of the VMS C & D and C & D will attempt to power on the set of virtual machines of A & B (that means that admission control allows all of these power-ons) then each VM will end up under tension correctly on each site 1 or site 2.

  Now for the ugly part - if any of the VMS to site 1 lost their storage in the score, or vice versa, then the vmware-vmx process who represent these virtual machines always operate on one or more hosts on the side of the partition that has lost the storage and there is now a process vmware-vmx representative the same virtual machine running on a host across the partition that has now acquired a lock on this VM. None of this is a problem until the partition joined. This is so the behavior described by Elisha happens - that is to say the virtual machine appears to bounce back between the two hosts until the answer to the question on the lock lost by pointing the VC client directly to the host. And as he pointed out, the question will be auto-répondu by VC to vSphere 4.0 U2 and above.

  -Ron

• HA retry time host isolation?

  Suppose the network breaks for some a host and host isolation response is stopped. After 12 seconds he will make his test of isolation, then will launch to stop the virtual machines running on the host.

  Other hosts will detect the host missing after 15 seconds and try to start them. However, because virtual machines very, probably not even to stop the locks on files are in place. Let's say that according to the workload inside the guest, it will take all of 20 seconds to several minutes to make a gradual stop. (I know there is a sunset that goes off after 5 minutes).

  But my question is, how long and how often other hosts will try to restart the VMs system which vmdk files become available one after the other?

  Duncan Epping describes the behavior of the http://www.yellow-bricks.com/2010/06/30/how-does-das-maxvmrestartcount-work/ reboot

  André

• Response of host Isolation and HA

  I was wondering what happens if your cluster 'Response of Isolation host' is set to "leave VM under tension" and you actually have a host fail.  HA will be able to distinguish between a host that is not visible on the network and let these VM under tension and a host that is down and restart these VM elsewhere?

  Thank you

  Yes, a failure of HA, other members can resume the lock that existed prior to the failure of the host for the virtual machine it was running.  In the case of a response of isolation, these locks are not erased, so when other hosts are trying to take over the lock, they are being denied and therefore stay up to the virtual machine and running on the response of isolated, as opposed to the caught locks if the host fails.

  Not the best description and I'm sure I've missed a step or two, but for all purposes, Yes, HA can make a difference between failure and isolation.

  -KjB

• slow response after the restart of the host

  Is this normal with the VC 2.5 Update Manager after the updates were installed and the host is restarted, it takes forever for the reclamation fill. For example I put a ping goes to the host, and after that the host has restarted, he comes to have 7 minutes for sanitation, task to understand it can complete sanitation.

  Its always been ' not a problem as such "but an observation that the illustrious host offline for awhile while the reboot and then comes back online, then the reclamation task is just there for a few minutes does not turn.

  Like I said this isn't a problem, but I was just wondering if this was normal?

  Concerning

  Dale

  I think it's normal because we have the same problem.

  Robert

• After update to Virtual Center of 2.0.2 to 2.0.5 - alerts; State of the host connection = no response

  Greetings,

  After update to Virtual Center of 2.0.2 to 2.0.5 - alerts; State of the host connection = no answer.    Currently ESX ver 3.3.  Service Console RAM is 800 MB.        Someone comes on this issue.   Please suggest.

  Thank you

  Techguru007

  Sounds good the problem crept... FIR alarms... service VC services.msc reboot and see if it helps... If not we will have to examine the log files to see if there are errors.

  Concerning

  Anil

  Save the planet, go for green

  If you have found my reply to be useful, feel free to mark it as useful or Correct.

• error "could not complete the configuration of the ha agent on the host computer.". bad configuration of the host network.

  Hola y buenos dias

  me esta dando este error cuando a UN con cluster 2 hots the digo el HA assets. There buscado por internet y the mayoria of las hacen referencia a lo mismo responses:

  http://KB.VMware.com/selfservice/microsites/search.do?language=en_US & cmd = displayKC & externalId = 1039108

  The config of VMware high availability (HA) falla con el error: unable to complete the configuration of the HA agent on the host

  Symptoms

  Resignation: this article traduccion of one ' configuration VMware High Availability fails with the error: unable to complete the configuration of the HA agent on the host "(1019200). Los items han sido traducidos en Español multiple in el mejor esfuerzo. Sin embargo el contenido o can meet desactualizado specific location. Para revisar el contenido mas reciente, please consult el article in English.

  • The config of falla of VMware high availability (HA)
    
  • El client vSphere muestra una Cònsola de Servicio, sin embargo al run el comando esxcfg-vswif - l cuando is esta conectado has the console of Servicio de ESX is revelan consolas additional service
    
  • Following messages appears:
    
    
    • Cannot complete the configuration of the HA agent on the host. See the details of the task for more information.
      
    • Misconfiguration of the network host installation
      
      

  Resolution

  Este problema compares cuando no todos los servidores del cluster the same comparten consoled of servicio o the same config administration of red. Some servidores pueden tener consolas service using numbers different o pueden tener mas that consolas otros servidores.
  
  For example, este error can suceder tambien if the config of the puerta of enlace (gateway) of VMkernel none are the same para todos los servidores del cluster. Para Québec the config, haga click derecho in los servidores con este error y select reconfigure for HA.
  
  Revise las differences in the Red between los servidores config if usted goes a usar por Auto (off o Power Off) x responses, porque estas options provocan eventos registro 'VMware HA isolation' and consoled her of servicio o el registro fallas of administration of red.
  
  If using the funcion esta: VM left the lights on in answer of x, the opcion para ignorar estos messages is available VMware VirtualCenter 2.5 update 3.
  
  Para configurar VirtualCenter para ignorar estos messages, configure the option advanced das.bypassNetCompatCheck como 'true '.
  
  Nota: Cuando esta using the option das.bypassNetCompatCheck, El mechanism of pulse used during the solo en VirtualCenter 2.5 relaciona config direcciones IP simétricas subredes dentro a traves of los nodos. For example, en UN back nodos cluster, if a server has "Service Console" 10.10.1.x 255.255.255.0 vSwif0 tiene y vSwif1 "Service 2" 10.10.5.x Console y el servidor tiene vSwif0 "Service Console" 10.10.2.x 255.255.255.0 B y vSwif1 "Service 2" 10.10.5.x, el pulsation solo opera Console sober vSwif1.»» Desde vCenter Server 4.0, can be related through subredes, hacer TR 'Ping' between subredes are allowed. Sin embargo on VMware is replaced by Recomiendan tenerlas Las subredes dentro.

  1. Haga click derecho in el cluster, luego haga click change settings.
     
  2. Quite the selection to turn on VMware HA.
     
  3. Hope a todos los servidores en el quiten HA cluster.
     
  4. Haga click derecho in el cluster, elija y change the settings.
  
  
• Select turn on VMware HA, luego elija VMware HA desde el cuadro of the izquierda.


• Select Advanced options.
  
• Adicione opcion das.bypassNetCompatCheck con el valor 'true '.
  
• Haga click OK in the options advanced, luego haga click en OK again pantalla para aceptar los cambios in el cluster config.
  
• Hope a todos los servidores ESX in el reconfiguren HA cluster.
  

El tema are that he made lo go y sigo don't con el mismo error y no lo tengo claro what me escapa.

OS explico mi arquitectura

Cluster development: 2 hots ESXi HA con 4.1U1 en mi red (the same as el vCenter)

* Cluster production: 6 Hots ESX HA con 4.1U1 en mi red (the same as el vCenter)
* Cluster DMZ: 1 Hots ESXi 4.1U1 esta en UN behind del cortafuegos Swicth how, y todo el trafico between el host y el esta allowed vCenter
* NuevaDMZ cluster: 2 Hots ESXi 4.1U1 ante las nuevas needs y ante together por parte del responsible of poner seguridad como DMZ is replaced by vmware Recomiendan to vuelve a poner the same config as the DMZ real osea, estan en UN behind del cortafuegos Swicth how, y todo el trafico between los hosts y el esta allowed vCenter.
El switch DMZ y nueva DMZ of course are the same.
Editor rated UN of fotos explicativas.
01.intro good example of config del cluster ESXi Québec TR cluster is activa el HA
version of 02.VM02 y config of Red TO host led (Eliminado porque no puedo mas undergo 5 Fotos)
version of 03.vm03 y config of Red TO host led (Eliminado porque no puedo mas undergo 5 Fotos)
04.the HA configuration config del cluster as falla
version 05.VM04 y config del SO red host
version 06.vm05 y config del SO red host
07.immolation error pues eso el

• Configure the host and the VM on two separate wireless networks

  Hello community, I was a browser for a long time, but this will be my first post.

  I would like to begin by saying that I have always found the answer I was looking for by browsing these forums and that I browsed discussions thereon and consulted the chapters regarding virtual networks in the manual workstation 7.1, but at this stage were still unable to solve my problem.

  The scenario:

  I'm a small business working in a House (upstairs) / hookah lounge (bottom). We recently had a second internet connection (WORK), Internet home of my family (HOME), to provide our customers with a free wi - fi. I would use the connection of WORK (during our hours of downtime) in a Ubuntu VM for folding and seeding of torrents. I want to put this far on a network traffic will not affect the other.

  The network:

  SE host: Windows 7 Pro 64-bit

  (Host) NIC: Intel PRO/Wireless 3945ABG (Mini PCI)

  VM: Ubuntu 10.04 on VMWare Workstation 7.0.0 build-203739

  NIC (VM): Alfa awus036h (USB)

  
  

  The current configuration:

  Network connection is made, the State of replication physical physical network is unchecked.

  The Alfa is connected to the virtual machine and is no longer present on the list of the network adapters in Windows.

  It seems that I have to manually disable the "auto eth 1" interface or the virtual machine using the internet connection in host rather than the network of your choice that the Alfa connects to in VMWorkstation. The speed of the internet with eth auto 1 is connected is quick and consistent, but using it defeats the purpose. Strangely, when I go to network connections, under the "last use" for "eth 1 auto ' it is said 'never '.

  When "eth 1 car" is disconnected, it seems that the virtual machine uses the network wireless connected to the Alfa. But the internet speed is very slow and inconsistent. On downloads, the speed varies considerably; Also, it remains at 0 kb/s for a while before going to 80 KB/s, then works his way down to 0 kb/s again.

  Possible solutions:

  1. it's a driver problem for the Alfa inside the VM environment all this time?

  2 just misunderstood how to set up this kind of virtual network?

  3 is it possible to get the desired configuration by filling the WORK and VMnet0/1/8?

  * Note: Only VMnet1 and VMnet8 appear on the Windows network connections, however isn't VMnet0 bridged one responsible for networking?

  4. upgrade to the current version of the desktop would be useful?

  5. do this problem originally because of some settings on the router?

  * Note: The AP is close enough to provide a signal strength of 85-90%

  Sorry to be so talkative, I just wanted to be as clear as possible because I'm still a beginner to learn more about virtualization.

  Thank you in advance, as always, your help is greatly appreciated.

  First of all, I must say that when I did this last response, I've been on my Mac and I thought the configuration of a host of Windows XP however outside the nomenclature of the names of the host network settings dialog box the rest stands as it is on a host Windows 7 as described below, including a picture as an attachment.

  On a Windows 7 x 64 host with two network adapters, each on a different subnet and VMware Workstation 7.1.3 installed with the editor of virtual computer network configured for VMnet0 and VMnet2 jumpered separately to one of the host of NIC and I have not changed the settings for Windows 7 host NIC-1 and have network/Internet connectivity to the host of this NETWORK adapter as shown in the picture of Google in Internet Explorer on the host computer.  In VMware Workstation 7.1.3 I have a Linux Guest configured to use VMnet2, which is filled in the settings and the Windows 7 host NIC-2 have all with the exception of VMware Bridge Protocol unchecked and have network/Internet connectivity in the guest as indicated by Google in a browser.

  From the perspective of connectivity network between the host and the guest by NIC - 2 on the host computer when all with the exception of VMware Bridge Protocol unchecked there is no connectivity between the two on this subnet because there are no protocol at stake to allow the conversation to take place.

  So theoretically and in practice what I said previously, but didn't were not expressly with a Windows 7 host in mind, nevertheless what I said is true and accurate, as evidenced by world real test/use by what I said and with the image attached herein.

  FWIW Windows 7 has been configured with the default settings and the only changes to the host's network were those made during the installation of VMware Workstation 7.1.3 so with the configuration I discussed with the attached picture, there is no reason why the host and the guest cannot be on different physical networks and each network/Internet connectivity based on the information I have provided and they be isolated from each other by being on separate physical networks.

  That said, even if they can be isolated by being on separate physical networks can still can connectivity between the 2 through VMware shared folders it it turned on and of course & slide and other services so if absolute isolation is necessary to the point where it can be, and the guest still operating system run on a Virtual Machine in the host you would need to disable the Backdoor for VMware Tools cannot provide shared folders on VMware, & glide and other services.  So if you need this isolation level let me know and I will provide additional information to complete it.

• HA sensitivity of host isolation

  Hello

  I was wondering if it is configurable to meanings?

  When you test the abduction of a switch of my kernel stack, I found that battery restarted in response, resulting in a failure full of about a minute.  This is why I really need to configure somehow HA to react only after, say, five minutes for the isolation of the host.

  Thank you very much

  As I understand it, das.failuredetectiontime should be what you are looking for.

  See HA Deepdive for more details

  André

• Network variables shared to the host PC

  Hello world

  I need to send the results of a time operation real PC to PC host without affecting the determinism on the PC in real time.

  To do this, I have two periods loops, the two race 417 microseconds, but at different levels of priority. Who runs the algorithm on the PC in real-time is a priority of 1000 and the other loop that transfers just results from the PC to the host PC in real time is a priority of 100.

  I measured the worst time taken to perform my loop of high priority to be 150 microseconds. I have so much time to send the results to the host PC. (I want to results updated all 417 microseconds).

  I run the algorithm for 40 seconds on the PC in real time. But the values are updated on the host at the end of 40 seconds PC and not at each iteration of the loop I want.

  What was my mistake?

  Kind regards

  Prashant

  Thank you all for the responses.

  I found my mistake. I had wired a variable directly from the first loop timed for the second timed loop. This is the reason why the second loop was still waiting and never run. I used dummy shared variables to transfer data between the loops. Now, the loop works very well.

  Thanks again

  Prashant

• Move from FC Switch to stop the March of the host

  In our environment, our CF of switching has been provided by the 6120 s UCS in switch mode.

  Later, we added a pair of MDS9124s to the environment and merges areas.

  To make the change, we have to configure the 6120 s mode end host.

  Do you know if the configuration change is unsettling for the server infrastructure?

  I understand the the 6120 s will reboot, but it restarts in a synchronized manner that will allow a tissue to stay high and accessible to guests?

  Or should I take a breakdown to the stop of the host to make this change?

  Thanks in advance.

  Daniel,

  It's completely disruptive for servers.  I reproduce the stage and blade connection tested a blade boot from SAN, and here are my notes:

  "Even when I changed only the subordinates FI, I lost connectivity to the server to boot from SAN and connectivity to UCSM."

  Back finally the subordinate and a few minutes later the main the same fact and finally the

  Virtual IP address responds to the pings.

  Minutes later the BONE ends up and retrieve the connections of the OS.

  When I had the chance to open a session in the UCSM, EHM SW mode change was effective for the two fabrics

  and had no errors anywhere. "

  I hope that helps you the window management, for me it took 10 minutes and I used UCSM 2.0 (3 c)

  Useful response rate.

  -Kenny