How can i set the system resource reservation using VI toolkit?

[Shaha]

Hi, does anyone know how i can set the CPU and memory reservation for the service console?

Thanks.

[LucD]

I don't know of any CPU reservation for the service console.

For the memory reservation you can have a look at

[Shaha]

I may not have explained myself well...

I am referring to system resource allocation as we would like to set the shares and minimum reservation etc.

[LucD]

So you are talking about resource pools ?

That can be done via the Set-ResourcePool cmdlet.

[Shaha]

Nope, if you are on the VI client and go to the host, configuration tab and then select System Resource Allocation - those are the settings we would like to configure using the vi toolkit.

Thanks.

[LucD]

Ok ,I finally understood what you want to do.

And no, there is no cmdlet in the VITK to do that.

But the SDK can do it.

Some info:

- we use the UpdateSystemResources method of the HostSystem object

- this method requires a HostSystemResourceInfo object as parameter

- in that object you can give the new settings for a system resource object (optionally with all it's child objects).

- the tree structure of these children is luckily always the same. The host/vim/console child is the one that has the settings you want to change.

- for other objects in the tree look at the key property of HostSystemResourceInfo object. In this case it contains host/vim/console.

- instead of defining all the properties I just copy the child object that I obtain from HostSystem object

- the resource parameters are found in the ResourceAllocationInfo object (1 for the CPU resources and 1 for the memory resources)

The script:

$esx = Get-View -Id (Get-VMHost <ESX-host>).Id

# The host/vim/console object 
$sysresinfo = $esx.SystemResources.Child[2].Child[0]

# The new values (just an example)
$sysresinfo.Config.cpuAllocation.reservation = 268 
$sysresinfo.Config.memoryAllocation.expandableReservation = $false

$esx.UpdateSystemResources($sysresinfo) 

Be careful changing the system resource allocation parameters !

Understand what you are doing !

[Shaha]

Hi,

I tried to run this code but i do not see any change although there is a task "Update System Resources".

Thanks for helping, i appreciate it.

[LucD]

Are you at the correct screen ?

In the VI Client, select the ESX server and go to Configuration - System Resource Allocation.

Click the button and select host/vim/console.

In the Details pane you should see the new values.

[Shaha]

But we want to set the following:

[LucD]

There seems to be something missing from your last post.

[Shaha]

But we want to adjust the settings in the simple screen, is that possible?

[LucD · Accepted solution]

Yes, with the same method.

You just need to know that what you see in the Simple view corresponds with host/system in the Advanced view.

I have added a few child indexes so you see the logic behind the Child -tree

The script then becomes

$esx = Get-View -Id (Get-VMHost <ESX-hostname>).Id
 
# The host/system object 
$sysresinfo = $esx.SystemResources.Child[1]
 
# Not the children of host/system  
$sysresinfo.Child = $null

# The new values (just an example)
$sysresinfo.Config.cpuAllocation.reservation = 300
$sysresinfo.Config.memoryAllocation.reservation = 1
 
$esx.UpdateSystemResources($sysresinfo) 

Again, be very careful what you are doing with this !!

[Shaha]

thanks for persevering and helping me out.

[sochry]

Any ideas what is causing this?

Exception calling "UpdateSystemResources" with "1" argument(s): "A specified parameter was not correct.

"

At :line:16 char:26

+ $esx.UpdateSystemResources <<<< ($sysresinfo)

[sochry]

The error is from the first scirpt Luc provided. It works fine on the second script. Just looking to see what the differences are between the two....

Steve