Average Memory Memory utilisation report

[Tat-Man]

Afternoon.  I have a client that has a small but heavily used environment.

2 x clusters with 2 x hosts in each cluster.  They have now unable to have a failure as they are consuming too much memory to allow us to perform patching as we can not put a host into maintenance as there are now not enough memory to support 1 host out of the cluster.

I am trying to get a report out that shows the average memory utilisation of each VM over 30 days.

The script is below.

 #Editable Varialbles.

$vCenterServerName = "removed"

$User = "removed"

$Password = "removed"

$Export = "removed"

$From = "removed"

$To = "removed"

$Subject = "Average Capacity Report"

$emailbody = "Please find attached the Average Capacity Report"

$SMTPserver = "removed"

#Non-Editable Variables.

$Attachment = $Export

#Virtual Centre Connection.

Add-PSSnapin VMware.VimAutomation.Core -ErrorAction SilentlyContinue

Connect-VIServer $vCenterServerName -AllLinked -User $User -Password $Password

#Collection Virtual Server Information.

Get-VM | Where {$_.PowerState -eq "PoweredOn"} | Select Name, Host, NumCpu, MemoryMB, `

@{N="CPU Usage (Average), Mhz" ; E={[Math]::Round((($_ | Get-Stat -Stat cpu.usagemhz.average -Start (Get-Date).AddDays(-30) -IntervalMins 60 | Measure-Object Value -Average).Average),2)}}, `

@{N="Memory Usage (Average), %" ; E={[Math]::Round((($_ | Get-Stat -Stat mem.usage.average -Start (Get-Date).AddDays(-30) -IntervalMins 60 | Measure-Object Value -Average).Average),2)}} , `

@{N="Network Usage (Average), KBps" ; E={[Math]::Round((($_ | Get-Stat -Stat net.usage.average -Start (Get-Date).AddDays(-30) -IntervalMins 60 | Measure-Object Value -Average).Average),2)}} , `

@{N="Disk Usage (Average), KBps" ; E={[Math]::Round((($_ | Get-Stat -Stat disk.usage.average -Start (Get-Date).AddDays(-30) -IntervalMins 60 | Measure-Object Value -Average).Average),2)}} |`

#Update export file location to be relevant to your network.

Export-Csv $Export

#Send Email Message.

Send-Mailmessage -From $From -To $To -Subject $Subject -Attachments $Attachment $emailbody -Priority Normal -SmtpServer $SMTPServer

Disconnect-VIServer $vCenterServerName -Force -confirm:$false 

When the script runs and emails it produces a csv and emails it which is what I am after but the output has columns in it below.  I am able to populate all fields except the Host field. What do I need to add to my script to populate the Host field.  I thought I could pull it from the Host area when looking at the summary of the VM.

Name

Host

NumCpu

MemoryMB

CPU Usage (Average), Mhz

Memory Usage (Average), %

Network Usage (Average), KBps

Disk Usage (Average), KBps

[LucD]

On the Select line, replace the Host entry with the calculated property

@{N='Host';E={$_.VMHost.Name}}

[Tat-Man]

Thank you very much. appreciate your assistance.

I edited the following line -

 Get-VM | Where {$_.PowerState -eq "PoweredOn"} | Select Name, Host, NumCpu, MemoryMB, ` 

To be

 Get-VM | Where {$_.PowerState -eq "PoweredOn"} | Select Name, @{N='Host';E={$_.VMHost.Name}}, NumCpu, MemoryMB, ` 

Is there a way to add in the cluster name?  Could I add in @{N='Cluster';E={$_.Cluster.Name}}

[LucD]

No, but you could add

@{N='Cluster';E={(Get-Cluster -VM $_).Name}}

[Tat-Man]

Thank you kind sir.

Much appreciative for the assistance.

[Tat-Man]

Last one.

Looking at getting the active memory utilisation of the VM.

So if assigned 20GB of memory but actually using 1.8GB, what would I require.

Thanks Again.

[LucD]

Isn't that what 'Memory Usage (Average), %' is already showing you?

Another option is looking at the Host memory used.

@{N='Memory Used MB';E={$_.ExtensionData.Summary.QuickStats.HostMemoryUsage}}

[Tat-Man]

Hi Lucid.

Maybe I was incorrect in my explanation.

I want to see the memory usage of the VM. not the % in ths case the the % is a average over the days of collection..

So if they have 20GB assigned but are at this time consuming 1.8GB of memory on the server, can I show that as per the screen capture.

If not that is fine.

[LucD]

Did you try the calculated property as well?

[Tat-Man]

Yes that gave me what was assigned to the VM not was in use by the VM.

I am not script writer, I google for them and try to make them work, so I might be wrong in my question.

I see utilisation of 20GB but 1.8GB memory Active for a VM.

[LucD]

That would be

@{N='Memory Used MB';E={$_.ExtensionData.Summary.QuickStats.ActiveMemory}}

[Tat-Man]

Thanks for that, but unfortunately field is blank.

Name	Cluster	Host	NumCpu	MemoryMB	Current Memory Used, MB	Memory Usage (Average), %	CPU Usage (Average), Mhz	Network Usage (Average), KBps	Disk Usage (Average), KBps
removed	removed	removed	4	20480		7.52	428.53	64.83	341.27
removed	removed	removed	4	16384		1.32	34.68	0.05	3.59

they would hopefully read the 2200 for the first one and  163 as MB for Current Memory Used in MB.

Script - #Virtual Centre Connection.

Add-PSSnapin VMware.VimAutomation.Core -ErrorAction SilentlyContinue

Connect-VIServer $vCenterServerName -AllLinked -User $User -Password $Password

#Collection Virtual Server Information.

Get-VM | Where {$_.PowerState -eq "PoweredOn"} | Select Name, @{N='Cluster';E={(Get-Cluster -VM $_).Name}}, @{N='Host';E={$_.VMHost.Name}}, NumCpu, MemoryMB, `

@{N="Current Memory Used, MB";E={$_.ExtensionData.Summary.QuickStats.MemoryActive}}, ` @{N="Memory Usage (Average), %" ; E={[Math]::Round((($_ | Get-Stat -Stat mem.usage.average -Start (Get-Date).AddDays(-30) -IntervalMins 60 | Measure-Object Value -Average).Average),2)}}, `

@{N="CPU Usage (Average), Mhz" ; E={[Math]::Round((($_ | Get-Stat -Stat cpu.usagemhz.average -Start (Get-Date).AddDays(-30) -IntervalMins 60 | Measure-Object Value -Average).Average),2)}}, `

@{N="Network Usage (Average), KBps" ; E={[Math]::Round((($_ | Get-Stat -Stat net.usage.average -Start (Get-Date).AddDays(-30) -IntervalMins 60 | Measure-Object Value -Average).Average),2)}}, `

@{N="Disk Usage (Average), KBps" ; E={[Math]::Round((($_ | Get-Stat -Stat disk.usage.average -Start (Get-Date).AddDays(-30) -IntervalMins 60 | Measure-Object Value -Average).Average),2)}} |`

#Update export file location to be relevant to your network.

Export-Csv $Export

#Send Email Message.

Send-Mailmessage -From $From -To $To -Subject $Subject -Attachments $Attachment $emailbody -Priority Normal -SmtpServer $SMTPServer

Disconnect-VIServer $vCenterServerName -Force -confirm:$false

[LucD]

That is ActiveMemory, not MemoryActive.


PS1: you don't need those back-ticks at the end of the lines
PS2: if your PowerCLI installation is > 6.5R1, you don't need the Add-PSSnapin anymore

Connect-VIServer $vCenterServerName -AllLinked -User $User -Password $Password

#Collection Virtual Server Information.

Get-VM | Where-Object { $_.PowerState -eq "PoweredOn" } |
Select-Object Name, @{N = 'Cluster'; E = { (Get-Cluster -VM $_).Name } }, @{N = 'Host'; E = { $_.VMHost.Name } }, NumCpu, MemoryMB,
@{N = "Current Memory Used, MB"; E = { $_.ExtensionData.Summary.QuickStats.ActiveMemory } },
@{N = "Memory Usage (Average), %" ; E = { [Math]::Round((($_ | Get-Stat -Stat mem.usage.average -Start (Get-Date).AddDays(-30) -IntervalMins 60 | Measure-Object Value -Average).Average), 2) } },
@{N = "CPU Usage (Average), Mhz" ; E = { [Math]::Round((($_ | Get-Stat -Stat cpu.usagemhz.average -Start (Get-Date).AddDays(-30) -IntervalMins 60 | Measure-Object Value -Average).Average), 2) } },
@{N = "Network Usage (Average), KBps" ; E = { [Math]::Round((($_ | Get-Stat -Stat net.usage.average -Start (Get-Date).AddDays(-30) -IntervalMins 60 | Measure-Object Value -Average).Average), 2) } },
@{N = "Disk Usage (Average), KBps" ; E = { [Math]::Round((($_ | Get-Stat -Stat disk.usage.average -Start (Get-Date).AddDays(-30) -IntervalMins 60 | Measure-Object Value -Average).Average), 2) } } |

#Update export file location to be relevant to your network.
Export-Csv $Export
#Send Email Message.
Send-MailMessage -From $From -To $To -Subject $Subject -Attachments $Attachment $emailbody -Priority Normal -SmtpServer $SMTPServer

Disconnect-VIServer $vCenterServerName -Force -Confirm:$false