powercli

# PowerCLI - Extend VMDK and Guest OS

So as always things change across multiple Window’s operating systems and VMware revisions. I had a need to extend the drives on about 50 VMs today and really didn’t want to do all that clicking. I remember awhile back it was easy to do this with a Basic Set-Harddisk and use the -ResizeGuestPartition but alas that has been removed from the current functionality. So I took my search to google and found a couple scripts that worked ok, but nothing that was a seamless experience.

# PowerCLI - Troubleshooting Multiple Default Servers

I use a customized version of http://www.virtu-al.net/vcheck-pluginsheaders/vcheck/ by Alan Renouf to connect to multiple servers. However a coworker of mine was trying to run it, and the script would only return data from the 2nd vCenter we were connecting to. Doing some troubleshooting we noticed their DefaultVIServerMode was set to single. This means that only a single servers connection will occur at once. Changing this setting is very easy, there are 3 scopes, but only one really needs to be set.

# PowerCLI - Enable CPU and Memory HotAdd

I had a need to enable CPU and Memory hotadd to many virtual machines prior to a template being updated, doing some research there is no easy way, however there are some functions out there to do it. You can copy and paste each function into a powershell window and then run the associated command. Enable-MemHotAdd $ServerName Disable-MemHotAdd$ServerName Enable-vCPUHotAdd $ServerName Disable-vCPUHotAdd$ServerName Enable Memory HotAdd Function Enable-MemHotAdd($vm){$vmview = Get-vm $vm | Get-View$vmConfigSpec = New-Object VMware.

# Sysprep runs repeatedly on virtual machines deployed to ESXi 5.1 build 1743533

We had a strange issue that any time a VM was snapshotted it then forced a reboot and sysprep. Reviewing the customization logs(C:\windows\temp\vmware-imc\guestcust.log) I noticed the following error..Unable to set customization status in vmx. Upon further research it seems this is a known issue and is resolved in ESXi 5.1 Express Patch 5 KB2077640 as referenced in this article KB2078352. However the hotfix only fixes future occurences, you still need to fix all the VMs affected.

# Create VMFS Datastore Using PowerCLI

For upcoming testing there was a need to create 140 datastores on a cluster for testing. Who wants to do that much clicking and typing? Not me! You can use the below PowerCLI commands to get the SCSI ID’s, Create the Datastore and then Rescan all hosts in the cluster. How do i get the CanonicalName for allocated disks? Get-SCSILun -VMhost 192.168.1.103 -LunType Disk | Select CanonicalName,Capacity How do I create a VMFS datastore for the CanonicalName I identified above?

# Get NAA.ID for Virtual Machine RDM's in VMware

This is a great script to keep handy. If you have multiple RDM’s on a VM and need to get the NAA_ID for them the below PowerCLI command will get you that information. Get-VM VMNAME| Get-HardDisk -DiskType "RawPhysical","RawVirtual" | Select Parent,Name,DiskType,ScsiCanonicalName,DeviceName,CapacityGB | fl If you then need to match the SCSI virtual disk to the Guest OS this is a great article on how to do so. KB2051606