Maximum cluster is eight ESX host?

Similar Questions

• HA/DRS and a Cluster of 10 ESX host

  Hello

  I would appreciate comments on best practices for HA and DRS configuration on the following configuration:

  • We have a cluster of 10 ESX host

  • 2 guests are related ONLY to datastore1

  • 8 guests are related ONLY to datastore2

  • All hosts are available and active in Lab Manager 3.02

  • We use no fences of network

  The questions are:

  1. If one of the hosts in the 'group' of 8 guests above fails, HA will restart the virtual machines on the 7 remaining or it will try to start on one of the 2 hosts in the different 'group' (which have no connectivity to datastore2). Please note that I use the term "group" to highlight the hosts connected to separate data warehouses.

  2. can we or must activate us DRS about this group in a perspective of Lab Manager? Even if we have a maximum of 8 hosts connected on the same VMFS volume, are we exceeding any rule DRS here?

  Thank you

  gogogo5

  My best guess is that most should all magically work.

  DRS won't even try to break you, he will always recommend you only migrants who are indeed possible.

  Yes, normally I too would advocate this split into two different groups, but with the problem, they do not need to be joined (you have configurations for which a VM MUST go on 2 and the rest MUST go to the 8, and indeed, LM will refuse to cross pools of resources to achieve).

  If disable you completely the DRS, LabManager uses a variant of the old (pre - 3.0) algorithms to try to find the compatible host less loaded (at deploy time) and put it there.

  I'm too uncertain and curious about the HA situation. I have a feeling would be deeply confused on a default installation, it could be implemented, but it would be difficult to make the right constraints.

• What is the MAX number of ESX host that can be added to the Cluster.

  I need to know the maximum host ESX that can be added in the cluster for ESX 3.5, ESX 4.0, ESX 4.1 & 5.0 ESX.

  Can someone give me the maximum without ESX host that can be added in the pool?

  Second, how to determine which ESX server's main Agents & which are secondary agent

  I need to know the maximum host ESX that can be added in the cluster for ESX 3.5, ESX 4.0, ESX 4.1 and 5.0 ESX.

  Can someone give me the maximum without ESX host that can be added in the pool?

  32 in a HA cluster

  Second, how to determine which ESX Server are main Agents & who are secondary agent

  See

  http://pubs.VMware.com/vSphere-50/topic/com.VMware.ICbase/PDF/vSphere-ESXi-vCenter-Server-50-availability-Guide.PDF

  and

  http://www.yellow-bricks.com/VMware-high-availability-deepdiv/

• the upgrade from 4.1 to cluster 5.5 / 5 esx host.

  We currently have 4 noise.running to host esx 4.1.0. (esx 1,2,3 (former host) and 4 (new purchase) and a server vcenter 4.1)

  We bought another esx host 5.

  I want to upgrade all hosts in the cluster with version 5.5, but I don't think that esx 1 and 2 meet the hardware requirements. This is why only 3/4 can be improved.

  I think we can get budget to replace this year laster host 1 and host 2, next year.

  What should be the best way to upgrade the cluster (you can buy another host this year and next year a plus).  Can I run 4.1 and 5.5 in the same group (I understand its not recommended).

  Thanks in advance.

  ^

  Thank you, yeh, I check host 1/2 can support up to esxi 5 version.

• Delete an ESX host in a cluster...

  VMware dear Experts

  Please help me I have a cluster (HA/DRS disabled) 2 esx host are members of the same, by mistake I haved added esx bad one in a cluster host. I want to remove the same. is there a way I can do the same thing without any downtime.

  NEED URGENT HELP...

  concerning

  MrVMware.

  Of course, you can do this without Maintenance Mode:

  -Click right host--> disconnect

  -Click right host--> delete

  -Add the host to the cluster

  Furthermore, if you did a search you would have found this: http://communities.vmware.com/thread/210959

• Add production ESX hosts to a cluster

  Hi all

  I did some research in the admin guides and community forums, and I'm sure that I know what to do, but I would really appreciate a test of consistency here because the manipulation I do is in a production environment:

  I have a campus that contains two ESX areas that are managed by using vSphere and connected to a San. vMotion of works very well, the performance is very good (although the resources of the two boxes are fairly complete upward). However, I recently realized that I'd neglected to set up a cluster HA and DRS.  I want to remedy.

  I created the cluster with these specs:

  • the two HA and DRS, enabled
  • to the left, she also fully automated.
  • the power management of left
  • monitoring and host admission control enabled
  • leave the default settings for the behavior of the virtual machine
  • monitoring VM disabled
  • EVC enabled
  • the storage value of the swap with the virtual machine file

  I think that the next steps would be to add each ESX host consecutively and merged its resources with the cluster. However, here are a few questions:

  • How do you assess the risk factor to do this in a production environment (1 = perfectly safe, is a proven Scenario; 5 = you are out of your bloody mind? Do not)
  • Should I be triple-checking the SAN snapshots and planning of downtime for servers, or is it possible live and without any major qualms?
  • Am I right in assuming that it will increase my performance as well as provide better robustness of the campus, or should I expect a decrease in performance?

  Thank you very much in advance for your advice!

  Hey red,

  Addressing your particular situation, I would say yes to two questions.  Admission control HA is here to help you.  Ensure there are enough resources on the host computer to run the current and any expected load it will be after an HA event.  50% is close to default (but it is really based on the size of the slot) in an environment with two guests when guest cluster failures tolerates is set to 1 in a two and 25% host environment when the percentage of unused reserved as production capacity cluster resources in failover is left to its default value.

  If you have several virtual machines running that allows you to book 50% of your cluster resources (which it sounds like you have), then you have the option of "first category" your virtual machines and their giving priorities to restart event HA.  For their level, you'll want to active DRS (can be set to manual Automation), resource pools and you will need to configure your virtual machine under your HA settings options.  You'll want to pay attention to the priority of restarting VM here.

  I suggest you take a look at blog Duncan Epping http://www.yellow-bricks.com/ and Frank Denneman http://frankdenneman.nl/blog. They are all two fairly well the definitive answer to the HA and DRS questions and advice.

  See you soon,.

  Mike

  http://VirtuallyMikeBrown.com

  https://Twitter.com/#! / VirtuallyMikeB

  http://LinkedIn.com/in/michaelbbrown

  Note: Epping and Denneman explained that the amount reserved by default resources when you use the host cluster failures tolerates is promising to reserve enough resources to power on virtual machines.  This reserve of resource does not on average current, account, or future default load.  If you want to manipulate this feature, modify the memory and CPU reserves, which are the numbers used to calculate the size of the slot.

  Post edited by: VirtuallyMikeB

• Trying to acquire "tail" result on all of the Cluster Log Files of the ESX host

  Hello everyone!

  I'm trying to design a script that I can use to point to ESX host groups and generate the last 10 lines of the log files specific on these systems by using Get-journal. First of all, I would like to point out that the following code works for a single individual host:

  $esx = get-VMHost - VMhost ""hostname"" " "

  $esxlog = Get-Log -key 'vmkernel' -VMHost $esx

  $esxlog. Entries & lt;

  ---

  I had to leave out the expression that specifies the last ten lines of $esxlog. Entries b/c this editor kept interpret this section as html and present it as such

  This will show the expected results, i.e. the last 10 lines of the newspaper on this host.

  Now, when I try to expand this concept and try to create a loop on this basis by using the code below:

  $esx = Get-Cluster "NOMCLUSTER" | Get-VMHost

  foreach ($_ in $esx) {$esxlog = Get-Log -key 'vmkernel' -VMHost $_ }

  $esxlog. Entries} & lt;

  ---

  once more the code specifying the last ten lines has been omitted here in order to avoid confusion

  I only get the following error: a parameter corresponding parameter name "System.Object []" cannot be found.

  What I am doing wrong with my script?

  The variable $_ is a predefined variable so that you should not use it as your loop variable.

  You could do it like this

  $esx = Get-Cluster  | Get-VMHost
  $esx | %{
       $esxlog = Get-Log -Key "vmkernel" -VMHost $_
       $nrEntries = $esxlog.Entries.Count
       Write-Host $_.Name -foregroundcolor green
       $esxlog.Entries[http://($nrEntries-11)..($nrEntries-1)|http://($nrEntries-11)..($nrEntries-1)]
  }
  

• If the ESX host in cluster lost the connection to the storage what will happen?

  Hello everyone

  Could someone clarify if the HA agent monitors the availability of storage on an ESX host or is it only the availability of the network on the vSwitch COS?

  Thanx

  working with your team of storage, they probably have the right tools to monitor and alert to such problems.

• 2 cluster nodes does not work on the same esx host

  Hello

  I would like to know how it is possible for 2 VM (a cluster of application) cannot run on the same esx (for example: only 2 esx in a cluster and an esx crash!)

  Thank you

  Concerning

  You must configure the properties of the DRS cluster to add a new regulation anti-affinite.

  See cluster / properties / DRS

  André

• How to report the current time on the ESX host in to a csv file with the following

  Hello guys

  I have the script next where I make the required details except the current time on the ESX host. Anyone can guide me please.

  		{foreach ($esx to $vmhosts)
  			$hostVC = $vcenter
  			$hostCluster = $esx. Parent.Name
  			$hostHost = $esx. Name
  			$ntp = $esx | Get-VMHostNtpServer
  			$hostNTP = "$ntp".

  			}

  I want to integrate the following for loop of the above for loop and ge the output in a single table.

  foreach ($esxcli in get-vmhost | get-esxcli) {"" |} {Select @{n = "Time"; e = {$esxcli.system.time.get ()}}, @{n = "hostname"; e = {$esxcli.system.hostname.get (.hostname)}}}

  Add-Content - Path '$hostVC, $hostCluster, $hostHost, $hostNTP, $hostTime' $hostInvFile - $ hostTime is where I want to get my host right now.

  I'm vcenter, esx name, name of the cluster, host of the ntp server address, but I need the host thus present.

  Thanks in advance.

  Thank you

  vKar

  Try changing the line where the script retrieves the VMHost to this

  $vmhosts = get-VMHost-State connected. Name sort

  This way the script will be only to ESXi nodes that are "connected".

  Pick up time for those defective does not much sense in all cases

• ESX host is listed in DVSwitch, but not in DVportgroups

  Hello

  I have the following in a CLuster (5.5 Vcenter, ESXi hosts 5.1) problem:

  I added a new ESX to the cluster (number 9 of ESX), then added 4 network cards to the DVSwitch (uses the LACP Protocol).

  In this DVSwitch I 2 DVportGroups / tag VLAN

  The problem is the host is listed in the tab "Hosts" in VCenter to level DVSwicth, but do not appear in the DVportgroups tabs (all hosts are listed here but not the last one..)

  vmk0 migrated successfully to the VLAN 1 St... but now, it appears limited to ""... I can migrate to the DVportGroup right... and VCenter says 'ok'... but nothing changes...

  I tried to migrate a virtual machine on the ESX (2nd VLAN) = > VM pings OK...

  So "technically" it works very well... but the ESX does NOT appear as members of DVportGroup.

  The problem appeared when I tried to deploy a vApp (antivirus) on the ESX... I'm stuck at the "select VLANS for the NETWORK card"... There is no VIRTUAL LAN in the list... (because the ESX host is no not part of any dvportgroup..)

  I tried "adding the ESX to the DVportGroup" after having asked for credentials, VCenter says 'ESX is already part of the pole '...

  Someone had this strange behavior?

  What can I do?

  Help!

  Best regards

  S

  I had a similar case, where the hosts have been posted under DVS, but not under DVS exchanges.

  A restart of vCenter Service fixed the problem. However, I was not deploy any TIME or such.

  Suhas

• Adding data to the ESX host store

  Hi all

  We are automating the process of adding data to the esx host store. We have all the necessary inputs as a host, Cluster, data center, data store name, store (VMFS) Pat data.

  Do we have the cmdlets to get the result? What is the data store should be added after the configuration of the network?

  We need confirm that the data store must be there in vcenter/Cluster?

  Please help explain the process.

  Thanks and greetings

  Riyas Hussain has

  If the LUNS on which these data warehouses are defined are zoned and correctly configured as a shared, they become automatically visible on the ESXi node.

  Do you see the LUN on different nodes of ESXi under storage adapters?

• ESX host for a virtual machine specific?

  An ESX (out of 3) host in a cluster has a physique more NIC

  We would like to place a special virtual machine on the ESX host.  Is it possible to attribute this VM to this particular host?  Needless to say, if there is a failure and that the VM is propelled upward on another ESX host, we will migrate it back manually.

  Your opinion is requested.

  Thank you

  With vSphere 4.1, you have host affinity.

  Otherwise, there's another thing, as to connect to a local iso file...

  But something can vMotion broken and/or HA.

  André

• installation of MSCS on the single ESX host

  Hello

  I've seen a few question running MSCS on the ESX host.  I have a pair of MSCS and MSSQL installation running on top.  I am faced with intermittent conflict ip in my cluster node.  Anyone has any experience on this.  Should I apply any configuration to the virtual switch?

  Hello

  Search for IP addresses on two VMs.

  IP address of cluster name

  Public NIC IP addresses and subnet

  Private NIC IP addresses and the subnet (Heartbeat)

  Also fix this problem, disable Heartbeat NIC on two VMS and select heartbeat communication with the public LAN option in MSCS. This helps to isolate the problem.

• How a VMGuest can see a number of physical ESX host processor

  Hello

  Not sure if this is expected behavior or not, but I have some application that runs from a linux machine to vmguest in my cluster Vsphere 4.0 U1 that is able to see the number of sockets processor busy on the ESX host that it is currently at. I never saw that happen up to now on another system in our environment. On Linux operating plan, when you run the "cpuinfo", the show only reviews the number of virtual processors assigned to it. I don't know how this program is able to see all the way down beyond the virtualization layer to the actual physical hardware layer on the esx host.

  My first thought was that this was triggered after the installation of the VM Tools on the guest operating system, but even after turning off the service tools you can still see the real taken account on the host computer.

  Can someone explain to me how this is possible?

  Thanks for any info you can provide

  Regardless of the tool that allows you to watch the CPU I have a strong suspicion about what is happening here.
  The exact CPU type in/proc/cpuinfo is listed: "AMD Opteron Processor 6164 HE.
  I guess that the tool you are using has some knowledge (using an internal list of program or by retrieving this information somewhere on the internet) that this CPU has really 12 hearts and he only relies on it and reported that the machine has 12 cores, instead of looking at what is really reported by the operating system.
  So, he just does not have the right to work and is not aware of virtualization.
  In any case, it is not really able to look directly into the hypervisor.
  Andreas
  -Visit my Blog experience front of VMware