Use of DNS by ESX host

Similar Questions

• Virtualize vCenter and patching ESX hosts

  I have a host two cluster HA with VSphere Essentials Plus, so no vMotion. (I know... good budget restrictions). It's a whole new infrastructure, so I only have a VM... my vCenter server running on host 1 (config) supported in a small size like mine environment

  I use VUM patch my ESX host that requires that the guests of had no VM and be in maintenance mode.

  The problem: How can I migrate my virtual vCenter server to my other host in order to set the host mode of maintenance and patch 1 (requires a vCenter runs).

  My thought: two guests can see the LUNS for the vCenter server. I think I can go into host 1, power off the virtual machine and then remove from the inventory. Then, I'm going to host 2, browse the store of data LUN and ADD it to its inventory. Is this correct? If so, what file in the data store can I connect to the host (vmx, vmdk, etc.)

  Thank you.

  pageda79 wrote:

  My thought: two guests can see the LUNS for the vCenter server. I think I can go into host 1, power off the virtual machine and then remove from the inventory. Then, I'm going to host 2, browse the store of data LUN and ADD it to its inventory. Is this correct? If so, what file in the data store can I connect to the host (vmx, vmdk, etc.)

  Yes, it will work, but you will need to attach the base to a host at a time line.  You would add to inventory the .vmx

  Or use the command line

  http://www.VMware.com/PDF/vSphere4/R40/vsp_40_esxupdate.PDF

  http://www.VMware.com/PDF/vSphere4/r40_u1/vsp_40_u1_vcli.PDF

• 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)]
  }
  

• Changing the DNS server for ESX hosts?

  Our network administrator will change the IP address of the DNS server.  In this way, we will change those corresponding to ESX hosts.

  We would like to know

  (1) can we change the DNS server on execution of the ESX hosts without going into maintenance mode?

  (2) under what circumstances the ESX host will do use DNS servers?

  (3) memory, we should add all the IP addresses of ESX host in the hosts file in the Service Console, where is this hosts file located at?

  Thank you

  Tony,

  Use "service network restart" command to restart the network service

  Do not forget also that...

  Very dependent on DNS HA, HA will not work without the correct DNS configuration. The servers ESX and vCenter server must be able to resolve the name (FQDN full) / IPs in both feel to get a working HA.

• Planning of the names of the dns infrastructure and host esx (FQHN)

  Greetings,

  We plan our virtual environment for ESX 3.5 on IBM xSeries hardware. The environment will be made up (initially for short term) of two ESX host machines and a server that is running Microsoft Windows Server 2003 for virtual center and VCB to backup proxy functions. My questions and concerns, consider installing the management network and the host names of the servers themselves.

  I want to ensure the safety of the ESX servers and management functions by choosing a servo for all ESX hosts IP subnet and the virtual Center. Anyone done this? The back of the draw are more limited communication with the "machines" or more complicated infrastructure network that you need to add an interface on a router or an internal firewall for proper computers can access the host ESX and virtual Center. - What someone else? Are there better ways?

  I also have questions about a naming convention good/responsible for all vmware hosts. We have example.com as a public domain. Someone also created a domain in active directory (who did not understand what they were doing) in the same domain, so my structure active directory looks like "host.example.example.com" - silly, I know. I guess that it is more appropriate to not place ESX or other host vmware in the same logical domain/dns as members active directory. While the leaves creating a separate field or using the public domain from example.com (esx.example.com). I thought for security and separation, it may be more appropriate to use "esx.example.local". This command removes any way for virtual infrastructure mingle in the public domain. All comments, thoughts, carries on this?

  I also intended to appoint guests something like the following: ESX1.something.tld, ESX2.something.tld, etc. and virtual center something like VC.something.tld. Since virtual center needs to be a member of active directory to allow the mapping to user accounts, those who cause any issies with the ESX host with different domain names complete? Are there other ways to connect to active directory without being a domain member machine? Is anyone doing or having problems with it from a security point?

  ccandia wrote:

  fhrivers,

  Thank you. I suppose that by 'local management LAN', you hear the internal local production lan do you use?

  We actuallu use 2 subnets now, private, internal, and a DMZ for guests in public (although it's hard to keep everything under this distinction more). I assume that your recommendation is just to meet the host ESX and virtual center under the internal local subnets, even as the other hosts internal and access control on virtual Center allows to regulate access to the VI3. Certainly address more easily. You have concerns the fact that VC is running on a windows platform and is therefore vulnerable as such? I was trying to come up with a good armor for VC. I guess that windows firewall is always an option, or stop the services and other standard precautions. What is your opinion of securing virtual Center?

  You're right, I want to talk about the normal subnet that all servers and users are connected to.  This works in my environment, but may not work in environments more serious questions of internal security.

  I actually run VCenter as a virtual machine in a HA cluster to eliminate the scenario of hardware failure, but I do not see why the vCenter running Windows makes it more vulnerable than any computer on your network.  Like any other essential service, I would make sure that running the server vCenter vCenter only and that essential services only run including a client anti-malware.  I tend to take an approach more inside-out security and not an outside in approach.  I'm more concerned with security at the application layer to the edge of the network.  Again, which works best for my environment.

• update of esx host, use do not update manager

  Hello

  We have some for security reason esx host we are do not allow to connect to the internet and Update Manager is no/prob can't be installed (security), so I need to download and install the patches manually.

  I need to apply the following patch, but at the bottom of the KB, I get

  To apply patches to ESXi host is via the VMware Update Manager. For more information, see installation and administration of VMware vSphere Update Manager.

  What is the typical whatsoever?  is this one?

  the hosts are 5.1

  kb = http://KB.VMware.com/selfservice/microsites/search.do?cmd=displayKC & docType = kc & docTypeID = DT_KB_1_1 & externalId = 2035778

  see you soon

  You can download the patches and copy it into the data store and apply it using ESXCLI

  Check the items below it will work by

  Install patches on an ESXi host from the command-line 5.x

  Fastest way to patch an ESX/ESXi by using the command line

• b/w esx hosts VMotion using CF Storage share.

  Hi, I wanted to know the esx communicate anything to the storage when its doing a vmotion. Lets say I make a vmotion between 2 esxi hosts share the same storage. I have a private just vnic to vmotion and a separate management and logging FT.  My vmkernel default gateway is the management of vnic. I do all the fiber channel for the shared storage.

  Once a vmotion over, the new esx host must tell the storage that the vm now lives on me. If storage is all CF, how do?

  Yes, locks are on the VMFS file system, so the connection of storage is used.

  André

• Call commands on the ESX host using powercli

  Hi all

  I need to run a specific command on some of my esx hosts, let's say "vmware - v", a powercli command, or automate by any means without using SSH.

  I see the invoke-expression command can do this, but I did not need to make it work.

  a syntax such as get-vmhost < hostname >. Invoke-expression-control 'vmware - v"does not work.

  Any ideas how I could do this?

  Thank you!

  I'm afraid that Invoke-Expression is a PowerShell cmdlet that is only intended to run code on the local computer.

  Without using SSH, I suspect that you will have a hard time finding a way to do it.

• Change DNS IP addresses on the ESX host server

  Hello

  I need to change the IP address of my Windows DNS servers on the my ESX hosts. I know I can do this through the vsphere client, but that requires a reboot of the servers. Is there a way I can do this via ssh by changing a file that will not cause a restart of the host? If so, please describe how to do this.

  Also, if the host is restarted, what will happen in the virtual machine of in the interval until the host is upward? It will cause the virtual machine to restart as well, or so I have to restart their after that the host is back? I also disabled HA until I did the DNS changes.

  Thank you.

  normally, I'm a "network service restart. sure enough...

• Make a single LUN can be used by multiple ESX hosts

  Is it possible for a single LUN to be made usable by multiple ESX hosts at the same time?  For example, if you have an image or used by a vSphere environment requiring other vSphere environments in the data center access, you can put the image on a storage place where completely separate ESX hosts vSphere environments completely separate can see the same lun and clone the image or necessary?

  If the logic unit number is locked by accessed by an ESX host will be lock expires when the ESX host is not an another ESX host in another environment vSphere allowing access to the logical unit number, or is the lock, as it is usable by a single ESX host, until the storage is reconfigured to make it usable by a different host?

  Is there a better solution to this scenario?

  Thank you

  You can deploy both at the same time.  Locking occurs only for changes to metadata and only for the shooting of subsecond.  It is not required for the entire deployment process.

  -Matt

  VCP, VCDX #52, Unix Geek, Nerd of storage

• Can we use use DELL R610 / R710 for execution of the ESX host?

  We will purchase a new server to run ESX 3.5 or vSphere.  We have new DELL servers.

  We considered R610 and R710, but we see that there are only 2 PCIe slots.  As one of them be given for an image ADDITIONAL NIC card, there is only one location for HBA.   It is advisable to use a Dual Channel QLogic QLE2462 HBA.

  However, it seems that the Dual Channel HBA will be a single point of failure - if it is connected to 2 different switches FC.  We would love to hear if anyone uses these DELL servers to run the ESX host.

  Thank you

  Good question, I would have preferred two HBA cards. If storage fails everything disappeared. If network failure you will not have access to the outside, but the chances of data corruption is smaller.

  Duncan

  VMware communities user moderator | VCP | VCDX

  -

• ESX 3.5: copy files using the service console from a network share to the esx host data store

  Hello

  I wonder. Is there a command that I can run the service console that would allow me to copy a file from a network share on the data store on the esx host?

  Eric

  If sharing is a Windows, you can also use smbclient within the service console and ride sharing.

  André

  * If you found this device or any other answer useful please consider awarding points for correct or helpful answers

• How to add a new virtual machine to the ESX host using the existing files?

  I need to implement a function clone without the use of cloneVM_task. I copied (a special copy) a set existing VM Directory Active Directory to a new directory and renamed copied all files prefix name of the new direcotry.  What task VM (reconfigVM_task, createVM_task or registerVM_task) command can I use to add that the new copied VM on the ESX host? I need to manually update the .vmx for new UUID file and other parameters?

  Thanks for any help.

  I think that as long as you have updated all the names to reflect the new clone you must be fine and on the first step, you will be prompted with a question.

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

  William Lam

  VMware vExpert 2009

  Scripts for VMware ESX/ESXi and resources at: http://engineering.ucsb.edu/~duonglt/vmware/

  http://Twitter.com/lamw

• ESX host will not use VMotion

  Hi all

  I have a question maybe someone can help.

  I installed two new ESX hosts in their own cluster, managed by a single data center environment.

  After the installation and updates, adding them to the Cluster environment and adding new licenses to the license server VC.

  I have one of the two ESX host who won't use VMotion. Everything is allowed as should be. But in the section of the Add On to the Configuration of the license, I see the following:

  VMware DRS Licensed for 2 cpu

  VirtualCenter for ESX Server Licensed agent for 2 cpu

  VMotion will not used

  VMware Consolidated Backup for 2 cpu license

  VMware HA under license for 2 cpu

  Additional details:

  Both servers in the cluster are identical hardware profiles: Intel 3.2Gig Xeon, 2 cavities 4 hearts, no HT.

  32Gig of RAM, (Proliant DL380 G5)

  The two servers connected to the SAN via Fibre Chanel Switch, redundant.

  Concert NIC ((VMNic 0 (Console 1), VMNic 1 (Standby adapter), VMNic 2 (Console 2) (the Virtual Machine Network), (VMkernel), (ports of vSwitch 56 none VLAN not defined) VMNic 3 (Standby adapter)).)

  No errors in the Logs of license, the Console message, etc. Everything seems in good health with no update needed.

  Both servers see the unique data store, created on the same SAN which it connects through the switch channel.

  VMFS 3.31.  Unique data store with several extensions (8 in total, the creation of a size of 15 to storage).

  Any ideas?

  All my other hosts using VMotion, but it does not work and there is no difference in configuration, I know.

  Thank you

  • FPTHREE

  Some of the most common problems that cause problems VMotion - have you enabled for VMotion vmkernel port? VMkernel ports on the same segments of entwork?

  Can you provide the ip addresses for your vmkernel enabled for vmotion -

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

• Average use of CPU and memory of the ESX host

  Dear team

  script of powercli necessary to fetch the last 2 month avg cpu and memory utilzaition for all ESX hosts that are managed by vcenter server.

  concerning

  Mr. Vmware

  Try something like this

  $esx = Get-VMHost
  $start = (Get-Date).AddMonths(-2)
  $metric = "cpu.usage.average","mem.usage.average"
  Get-Stat -Entity $esx -Start $start -Stat $metric | Group-Object -Property {$_.Entity.Name} |
  Select @{N="VMHost";E={$_.Name}},  @{N="Avg CPU %";E={$_.Group | where {$_.MetricId -eq "cpu.usage.average"} |
      Measure-Object -Property Value -Average | Select -ExpandProperty Average}},  @{N="Avg Memory %";E={$_.Group | where {$_.MetricId -eq "mem.usage.average"} |
      Measure-Object -Property Value -Average | Select -ExpandProperty Average}}