Start or stop ESXi services using PowerCLI

Start the ssh service on all hosts:

Get-VMHost | Foreach {
   Start-VMHostService -HostService ($_ | Get-VMHostService | Where { $_.Key -eq "TSM-SSH"} )
}

Thanks to Alan Renouf at virtu-al.net, where I found this snippet: http://www.virtu-al.net/2010/11/23/enabling-esx-ssh-via-powercli/

If you want to start the ssh service on a single host, change ESXiHostName to your ESXi FQDN:

Get-VMHost -Name ESXiHostName | Foreach {
   Start-VMHostService -HostService ( $_ | Get-VMHostService | Where { $_.Key -eq "TSM-SSH" } )
}

If you want to stop the ssh service on all hosts:

Get-VMHost | Foreach {
   Stop-VMHostService -HostService ($_ | Get-VMHostService | Where { $_.Key -eq "TSM-SSH"} )
}

If you have multiple cluster in vCenter, are connected to multiple vCenters, be sure to launch the command only to the necessary hosts:

  • Get-Cluster -Name ClusterName will filter to the specified Cluster
  • Get-VMHost -Name ESXiHostName will filter to the specified ESXi
  • Get-VMHost -Server vCenterServerName will filter to the specified vCenter server
Get-Cluster -Name ClusterName | Get-VMHost -Name ESXiHostName -Server vCenterServerName | Foreach {
   Stop-VMHostService -HostService ($_ | Get-VMHostService | Where { $_.Key -eq "TSM-SSH"} )
}

These are other services I frequently use:

  • DCUI (Direct Console UI)
  • lwsmd (Active Directory Service)
  • ntpd (NTP Daemon)
  • sfcbd-watchdog (CIM Server)
  • snmpd (SNMP Server)
  • TSM (ESXi Shell)
  • TSM-SSH (SSH)
  • vmsyslogd (Syslog Server)
  • vmware-fdm (vSphere High Availability Agent)
  • vpxa (VMware vCenter Agent)
  • xorg (X.Org Server)

There are other services available but I have never used them in this context (yet):

  • lbtd (Load-Based Teaming Daemon)
  • pcscd (PC/SC Smart Card Daemon)
  • vprobed (VProbe Daemon)

Change the startup policy for a service:

  • Automatic: Start automatically if any ports are open, and stop when all ports are closed
  • On: Start and stop with host
  • Off: Start and stop manually
get-vmhost | Foreach {Set-VMHostService -HostService ($_ | Get-VMHostService | where {$_.key -eq "tsm-ssh"}) -policy On}

 

Reconfigure diagnostic partition

Reconfigure diagnostic partition with PowerCLI using Get-EsxCli

The following Get-EsxCli command will unconfigure your diagnostic partition and reconfigure with smart selection. This was needed because the install partition uuid had changed due to an option in the NetApp system while doing system testing.

$server_list = Get-VMhost

Foreach ($srv in $server_list)
{
 $esxcli = Get-EsxCli -VMhost $srv
 #$esxcli.system.coredump.file.add($null,"VMFS_log_partition","$srv.name",$null)
 $esxcli.system.coredump.partition.set($null,$null,$null,$true)
 $esxcli.system.coredump.partition.set($true,$null,$true,$null)
 $esxcli.system.coredump.partition.get()
}

Many thanks to http://www.virten.net/2014/02/howto-use-esxcli-in-powercli/

PowerCLI goodies

PowerCLI goodies

These are powercli goodies I use on a regular base. I have collected them here to find them easily. Some I wrote myself, some are copied from other sites. If I didn’t reference the source, I don’t know anymore where I found it.

Change portgroup on a lot of vm’s

Testing with one vm

get-vm my_vm_name | Get-NetworkAdapter |where {$_.networkname -eq "current_network_label"} | set-networkadapter -portgroup "new_network_label" -confirm:$false

Reconfigure all vm’s with the string “vdi” in the name

get-vm *vdi* | Get-NetworkAdapter |where {$_.networkname -eq "current_network_label"} | set-networkadapter -portgroup "new_network_label" -confirm:$false

Find all vm’s with more than 8 CPUs

(get-view -viewtype virtualmachine).summary.config | where {$_.numcpu -gt 8}

Reload Syslog via esxcli

While executing the NetApp MetroCluster testplan, the syslog service stops logging to the presented syslog datastore. To restart the logging reload the syslog service on all impacted hosts. The following command will reload the syslog service on all hosts in the connected vCenters. Check the $global:defaultviservers to know which vCenters are connected.

$server_list = Get-VMhost

Foreach ($srv in $server_list)
{
   $esxcli = Get-EsxCli -VMhost $srv
   $esxcli.system.syslog.reload()
}

Speed-up the initialization of PowerCLI

This needs to be done for each registered version of PowerCLI. This one worked for me on Windows Server 2012 R2

C:\Windows\Microsoft.NET\Framework64\v4.0.30319\ngen.exe install “VimService55.XmlSerializers, Version=5.5.0.0, Culture=neutral, PublicKeyToken=10980b081e887e9f” /ExeConfig:c:\windows\system32\WindowsPowerShell\v1.0\PowerShell_ISE.exe

Change the Power Management Policy for each host in cluster

#get connected esxi hosts
$vmhostlist = get-vmhost |sort|select name

#for each host show the power management policy setting
foreach ($entry in $vmhostlist) {
   #list power management policy on all connected esxi hosts
   get-vmhost |sort|select name, @{ N="CurrentPolicy"; E={$_.ExtensionData.config.PowerSystemInfo.CurrentPolicy.ShortName}},@{N="CurrenPolicyKey"; E={$_.ExtensionData.config.PowerSystemInfo.CurrentPolicy.Key}},@{N="AvailablePolicies";E={$_.ExtensionData.config.PowerSystemCapability.AvailablePolicy.ShortName}
}

#for each host change the power management policy to high performance
foreach ($entry in $vmhostlist) {
   $view=(get-vmhost $entry.name|get-view);(get-view $view.configmanager.powersystem).configurepowerpolicy(1)}
   #list power management policy on all connected esxi hosts
   get-vmhost |sort|select name, @{ N="CurrentPolicy"; E={$_.ExtensionData.config.PowerSystemInfo.CurrentPolicy.ShortName}},@{N="CurrenPolicyKey"; E={$_.ExtensionData.config.PowerSystemInfo.CurrentPolicy.Key}},@{N="AvailablePolicies";E={$_.ExtensionData.config.PowerSystemCapability.AvailablePolicy.ShortName}
}

Update:

Apparently there were some errors (curly brackets missing or in the wrong place) in the previous code.

It also ran several times per host because per host there was a Get-VMHost in the ForEach iteration. So If you had three hosts it would run three times per host.

The updated and optimized code:

$VMHosts = Get-VMHost

#for each host show the power management policy setting
ForEach ($entry in $VMHosts) {
   #list power management policy on all connected esxi hosts
   $entry | Select Name, @{ N="CurrentPolicy"; E={$_.ExtensionData.Config.PowerSystemInfo.CurrentPolicy.ShortName}},@{N="CurrenPolicyKey"; E={$_.ExtensionData.Config.PowerSystemInfo.CurrentPolicy.Key}},@{N="AvailablePolicies";E={$_.ExtensionData.Config.PowerSystemCapability.AvailablePolicy.ShortName}}
}

#for each host change the power management policy to high performance
ForEach ($entry in $VMHosts) {
   $view=($entry | Get-View);(Get-View $view.ConfigManager.PowerSystem).ConfigurePowerPolicy(1)
   #list power management policy on all connected esxi hosts
   $entry | Select Name, @{ N="CurrentPolicy"; E={$_.ExtensionData.Config.PowerSystemInfo.CurrentPolicy.ShortName}},@{N="CurrenPolicyKey"; E={$_.ExtensionData.Config.PowerSystemInfo.CurrentPolicy.Key}},@{N="AvailablePolicies";E={$_.ExtensionData.Config.PowerSystemCapability.AvailablePolicy.ShortName}}
}

show connected vcenters/esxi’s

$Global:DefaultVIServers

connect to previously connected vcenters/esxi’s

connect-viserver -menu

move vm storage vmotion

get-vm Win* | move-vm -Datastore (Get-Datastore sdc-t*)

Mounting and unmounting NFS datastores

Mount NFS datastore

get-vmhost | New-Datastore -Nfs -Name Datastore_Name -Path /vol/Name_on_NFS_host -NfsHost NFS_host_IP

Remove NFS datastore

get-vmhost | Remove-Datastore -datastore Datastore_Name

Change the default ‘ESX Admins’ AD group to your group name

ESXi servers will by default search for the group ‘ESX Admins’ in Active Directory. The following command will change this to ‘my_group_name’.

get-vmhost | Get-AdvancedSetting "Config.HostAgent.plugins.hostsvc.esxAdminsGroup" | Set-AdvancedSetting -value "my_group_name" -Confirm:$false