Query and Set HA Settings

[nicholas1982]

Hi All,

I need to query and possibly set HA settings in particular " Heartbeat Monitoring Sensitivity" (See Screenshot Attached)

[LucD]

Try like this, there are in fact three possible combinationes (Low, Medium and High)

$clusterName = 'MyCluster'

$HMSensitivity = @(

    @{

    Name = 'Low'

    MinUptime = 480

    FailureInterval = 120

    MaxFailureWindow = 604800

    },

    @{

    Name = 'Medium'

    MinUptime = 240

    FailureInterval = 60

    MaxFailureWindow = 86400

    },

    @{

    Name = 'High'

    MinUptime = 120

    FailureInterval = 30

    MaxFailureWindow = 3600

    }

)

# Query the setting

$cluster = Get-Cluster -Name $clusterName

$cluster | Select Name,

    @{N='Heartbeat Monitoring Sensitivity';E={

        $sensitivity = $HMSensitivity | where{$_.MinUptime -eq $cluster.ExtensionData.ConfigurationEx.DasConfig.DefaultVmSettings.VmToolsMonitoringSettings.MinUpTime}

        $sensitivity['Name']

    }}

# Change the setting

$request = 'Low'   # Use Low, Medium or High

$sensitivity = $HMSensitivity | where{$_.Name -eq $request}

$spec = New-Object VMware.Vim.ClusterConfigSpec

$spec.DasConfig = New-Object VMware.Vim.ClusterDasConfigInfo

$spec.DasConfig.DefaultVmSettings = New-Object VMware.Vim.ClusterDasVmSettings

$spec.DasConfig.DefaultVmSettings.VmToolsMonitoringSettings = New-Object VMware.Vim.ClusterVmToolsMonitoringSettings

$spec.DasConfig.DefaultVmSettings.VmToolsMonitoringSettings.MinUpTime = $sensitivity['MinUpTime']

$spec.DasConfig.DefaultVmSettings.VmToolsMonitoringSettings.FailureInterval = $sensitivity['FailureInterval']

$spec.DasConfig.DefaultVmSettings.VmToolsMonitoringSettings.MaxFailureWindow = $sensitivity['MaxFailureWdinow']

$cluster.ExtensionData.ReconfigureCluster($spec,$true)

# Query the setting

$cluster = Get-Cluster -Name $clusterName

$cluster  | Select Name,

    @{N='Heartbeat Monitoring Sensitivity';E={

        $sensitivity = $HMSensitivity | where{$_.MinUptime -eq $cluster.ExtensionData.ConfigurationEx.DasConfig.DefaultVmSettings.VmToolsMonitoringSettings.MinUpTime}

        $sensitivity['Name']

    }}

[nicholas1982]

Thanks Luc, this looks like it will do the trick.

On the flip side the amount of code required for just one cluster is overwhelming considering this is just a tiny bit of what I'm trying to build which a DSC health check.

I might be back for more help if I can't work out the rest, thanks again Luc.

[LucD]

That's the drawback when functionality is not available directly through a PowerCLI cmdlet.

The API methods most of the time do require a bit more code I'm afraid.

On the other hand it makes you appreciate the PowerCLI cmdlets even more :smileygrin:

And sure, feel free to ask!

[nicholas1982]

Hi Luc,

Just want say I tested it and works perfectly, in fact I was trying to query this last night but never thought to dive into "ConfigurationEx" of the extensionData. I also just checked out I can so many other things I need for my DSC health check. :smileyhappy:

[LucD]

Quick question, does DSC stand for Desired State Configuration in this case?

[nicholas1982]

Yes, it does, I've recently become very fascinated with desired state. Imagine having to manage 200+ all flash VSAN nodes, NSX, Stretched vsan, the entire vRealize suite, 1000's VM's. desired state plays a huge role in maintaining compliance , resiliency, performance etc. I truly believe maintaining DSC against a VVD (VMware Validated Design) the end result is a robust bulletproof environment no matter big it is.

As side note, after getting really interested in DSC for VMware Infrastructure I stumbled across the DSC stuff you've been working on. DSC might not be buzz concept yet when it comes to VMware, but its only a matter of time.

[LucD]

Great to hear.

I'm planning a major update of my DSC resources in the coming weeks (just need to find some time).

The update will include guidelines on how to contribute.

[nicholas1982]

That's amazing, I totally get it, DSC is a beast and needs time, you've done amazing work Luc, looking forward to seeing more of this!

As side question my powershell skills are very limited but currently super keen to keep learning, my end goal is codify/automate infrastructure and maintain DSC.

Would you recommend this book, is there a new addition I should wait for?

VMware vSphere PowerCLI Reference: Automating vSphere Administration

[LucD]

That book is a reference, so it is not a learning guide.
It tries to cover all aspects of your vSphere admin tasks. and how you can automate these through PowerCLI.

Make sure to get the 2nd edition, which was released last year, and contains new and updated chapters.

[nicholas1982]

Cheers Luc

[_Parakiss_]

If you want to add a Heartbeat Datastore,

$spec.DasConfig.HeartbeatDatastore = $(Get-DataStore -Name “DatastoreName”).Id