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Querying for SPNs
While troubleshooting connectivity problems in VMM 2012 I had to query AD to check if SPNs have been created for the service account used to run VMM. Here is what I used to query AD: setspn –l Domain_name\VMM_service_account_name Incidentally, this showed me that I have two SPNs for this service account. One was for the current VMM server and the second one was for the old VMM server. I had an old VMM server at one time. Then I killed it and created a new VMM server. I deleted the old SPN using this command: setspn -d SCVMM/VMM_server_name Domain_name\VMM_service_account_name PS: Microsoft PSS told me to do this.
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PowerShell command to check checkpoints in Hyper-V
Here is a quick PS command to check how many of your VMs have a snapshot: Get-VMCheckpoint |format-List -Property Name,Description It is always a good ideal to keep an eye on snapshots of your VMs.
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Hyper-V 2012 cluster installation troubleshooting
While installing a Hyper-V 2012 cluster I ran into some trouble. The cluster got installed successfully but a few things did not work properly. Live migration problems: Live migration does not work…well…sometimes. Sometimes it does work. So it behaves intermittently. I started a thread about it here. CSV not visible on all nodes. When using VMM console, the 2 CSVs I created are not available for placement of new or migrated VMs on all 3 nodes clusters in the cluster. Interestingly the CSV mount point under c:\ClusterStorage\VolumeX is visible on all nodes. Witness disk is visible on all nodes. Here are the steps I took towards solving the problem:
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Accounts for managing hosts in SCVMM 2012
I just learnt (the hard way) the correct way to add Hyper-V hosts to SCVMM. You… should not use the service account used to run SCVMM admin service. should not use your own domain admin or admin level credentials. Instead you should… Create a VMM host management account in AD. Add that AD account to the local admin group on all your Hyper-V hosts. Add that AD account to your VMM as a “Run As Account”. Then while adding a new host to VMM, specify that run as account as the account to be used to add that hyper- host. Until I did it this way, I was having trouble…
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SC VMM does not see dynamic GPT volumes
Ok so I found this one out the hard way…hit and trial No matter what I did, one volume on a Hyper-V 2012 server did not show up in my SC VMM. I finally figured it out. I had to delete and recreate that volume as a basic disk (not dynamic), which is by default anyway. ONLY then the VMM was able to see the volume. I hope this helps someone out there.