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They have a very good support. I had some issues configuring it and they helped me out.
During the course of my powershell learning, I realised this little one line script can help us to retrieve Hardware version from all the powered-on VMs which are running on old hardware version i.e version 4.
Get-VM | Where-Object {$_.PowerState -eq PoweredOn} | Where-Object {$_.version -lt "v7"}
Today, in out office we were facing a interesting problem. Every now and then one of the VM will timeout. This was causing lot of issues. The VM was in production. This VM was created few days ago and everything was running fine. We were not sure what was causing the problem.
We looked at couple of things like ;-
I just realized may be there might be a Duplicate MAC somewhere on the network that might be causing this problem. Here comes powershell to rescue. Did a google and found this nice script , from vNugglets which can tell us if there are any duplicate address on the network.
After running the script, we did find that there was indeed duplicate MAC address on the network which was causing this issue.
Thanks for the script it saved us lot of time.
On a side note :- I was wondering if there are duplicate MAC address across multiple VCenter Server, how are we going to troubleshoot that. Need to do some research to get answer to that question.
I am still new to powershell everyday I learn something new about it. Today, while going through the manuals, I noticed a interesting cmdlet called "Enter-PSSession"
The Enter-PSSession cmdlet starts an interactive session with a single remote computer. During the session, the commands that you type run on the remote computer, just as though you were typing directly on the remote computer. You can have only one interactive session at a time.
Typically, you use the ComputerName parameter to specify the name of the remote computer. However, you can also use a session that you create by using New-PSSession for the interactive session.
To end the interactive session and disconnect from the remote computer, use the Exit-PSSession cmdlet, or type "exit".
I was having trouble making this cmd work. Every time, I used to get the following error message
PS K:\> Enter-PSSession -computername 10.0.0.1 -credential USA\administrator
Enter-PSSession : Connecting to remote server failed with the following error message : The WinRM client cannot process the request. Default authentication may be used w
ith an IP address under the following conditions: the transport is HTTPS or the destination is in the TrustedHosts list, and explicit credentials are provided. Use winrm
.cmd to configure TrustedHosts. Note that computers in the TrustedHosts list might not be authenticated. For more information on how to set TrustedHosts run the followin
g command: winrm help config. For more information, see the about_Remote_Troubleshooting Help topic.
At line:1 char:16
+ Enter-PSSession <<<< -computername 10.0.0.1 -credential USA\administrator
+ CategoryInfo : InvalidArgument: (10.0.0.1:String) [Enter-PSSession], PSRemotingTransportException
+ FullyQualifiedErrorId : CreateRemoteRunspaceFailed
After looking at help manuals and Google I found, using the following cmd "winrm quickconfig" at Powershell prompt on the destination computer will do the trick. It will enable firewall exceptions and will accept WS-Man requests to any IP on this machine.
I would like to have firewall exceptions just for few Ip Address and not "ANY IP address". Will have to do more research on this topic. Perhaps it warrents for another blogpost.
PS K:\> Enter-PSSession corp
[corp]: PS C:\Users\TOM\Documents>
All though I have not tested it throughtly, but I think there is lot of potential to use this cmd-let for day to day troubleshooting specially if you need to quickly connect to vcenter server OR some other server and want to have the link to the log files Or services that are running on the computer for example:-
To get a quick look at the services that are running for vmware
[corp]: PS C:\> Get-Service | Where-Object {$_.Displayname -like '*vm*'}
Status Name DisplayName
—— —- ———–
Running ADAM_VMwareVCMSDS VMwareVCMSDS
Stopped vCOConfiguration VMware vCenter Orchestrator Configu…
Running vctomcat VMware VirtualCenter Management Web…
Running vimPBSM VMware vSphere Profile-Driven Stora…
Running VMTools VMware Tools Service
Stopped vmvss VMware Snapshot Provider
Running vpxd VMware VirtualCenter Server[corp]: PS C:\>
