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qwert1235
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Create alarm "monitor hardware" by script?

Hello:

I'm wondering how I can create alarm to monitor hardware by script?

For example, I want to write a script that will create alarm similar to default alarm “Status of other host hardware objects”.

Follow great docs from LucD website (http://www.lucd.info/2009/11/27/alarm-expressions-part-2-event-alarms/), I wrote the following code:

$alarm.Name = "Status of other host hardware objects"

$alarm.Description = "monitor other host hardware objects"

$alarm.Enabled = $TRUE

$expr1 = New-Object VMware.Vim.EventAlarmExpression

$expr1.EventType = "com.vmware.vc.cim.CIMGroupHealthStateChanged"

$expr1.ObjectType = "HostSystem"

$expr1.Status = "green"

$expr2 = New-Object VMware.Vim.EventAlarmExpression

$expr2.EventType = "EnteringMaintenanceModeEvent"

$expr2.ObjectType = "HostSystem"

$expr2.Status = "yellow"

$expr3 = New-Object VMware.Vim.EventAlarmExpression

$expr3.EventType = "EnteringMaintenanceModeEvent"

$expr3.ObjectType = "HostSystem"

$expr3.Status = "red"

$alarm.expression = New-Object VMware.Vim.OrAlarmExpression

$alarm.expression.expression += $expr1

$alarm.expression.expression += $expr2

$alarm.expression.expression += $expr3

$alarmMgr.CreateAlarm($entity.MoRef, $alarm)

But now I have problem to add Argument, Operator and Value to Condition (advanced) to all three different events?

Also, I know I have to restart VC after creating this alarm, but it’s fine with me (the same “issue” I had when added Network/Storage monitoring alarms by script).

I would really appreciate for help.

Thanks a lot!

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LucD
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Ok, I think I got it.

You need to use the Comparisons property to define the conditions.

Try this

$entity = (Get-VMHost <esx-hostname>).Extensiondata
$alarm = New-Object VMware.Vim.AlarmSpec
$alarmMgr = Get-View AlarmManager

$alarm.Name = "Status of other host hardware objects"
 
$alarm.Description = "monitor other host hardware objects"
$alarm.Enabled = $TRUE
 
$expr1 = New-Object VMware.Vim.EventAlarmExpression
$expr1.EventType = "EventEx"
$expr1.EventTypeId = "com.vmware.vc.cim.CIMGroupHealthStateChanged"
$expr1.ObjectType = "HostSystem"
$expr1.Status = "green"

$condition11 = New-Object VMware.Vim.EventAlarmExpressionComparison
$condition11.attributeName = "group"
$condition11.operator = "equals"
$condition11.value = "Other"

$condition12 = New-Object VMware.Vim.EventAlarmExpressionComparison
$condition12.attributeName = "newState"
$condition12.operator = "equals"
$condition12.value = "green"

$expr1.Comparisons += $condition11
$expr1.Comparisons += $condition12

$expr2 = New-Object VMware.Vim.EventAlarmExpression
$expr2.EventType = "EventEx"
$expr2.EventTypeId = "com.vmware.vc.cim.CIMGroupHealthStateChanged"
$expr2.ObjectType = "HostSystem"
$expr2.Status = "yellow"

$expr2.Comparisons += $condition11
$condition22 = New-Object VMware.Vim.EventAlarmExpressionComparison
$condition22.attributeName = "newState"
$condition22.operator = "equals"
$condition22.value = "yellow"
$expr2.Comparisons += $condition22

$expr3 = New-Object VMware.Vim.EventAlarmExpression
$expr3.EventType = "EventEx"
$expr3.EventTypeId = "com.vmware.vc.cim.CIMGroupHealthStateChanged"
$expr3.ObjectType = "HostSystem"
$expr3.Status = "red"

$expr3.Comparisons += $condition11
$condition32 = New-Object VMware.Vim.EventAlarmExpressionComparison
$condition32.attributeName = "newState"
$condition32.operator = "equals"
$condition32.value = "red"
$expr3.Comparisons += $condition32

$alarm.expression = New-Object VMware.Vim.OrAlarmExpression
$alarm.expression.expression += $expr1
$alarm.expression.expression += $expr2
$alarm.expression.expression += $expr3
 
$action = New-Object VMware.Vim.AlarmAction
 
$action = New-Object VMware.Vim.AlarmTriggeringAction 
$action.action = New-Object VMware.Vim.SendEmailAction 
$action.action.toList = "lucd@lucd.info;" 
$action.action.ccList = "" 
$action.action.subject = "" 
$action.action.body = "" 
$action.green2yellow = $false 
$action.yellow2red = $false 
$action.red2yellow = $false 
$action.yellow2green = $false
 
$spec = New-Object VMware.Vim.AlarmTriggeringActionTransitionSpec 
$spec.startState = "yellow" 
$spec.finalState = "red" 
$spec.repeats = $false
 
$action.transitionSpecs = $spec
 
$alarm.action = New-Object VMware.Vim.GroupAlarmAction
$alarm.action.action += $action
 
$setting = New-Object VMware.Vim.AlarmSetting 
$setting.toleranceRange = 0 
$setting.reportingFrequency = 0 
 
$alarm.setting = $setting
 
$alarmMgr.CreateAlarm($entity.MoRef, $alarm)

Note that I reused the $condition11 in all three expressions since it doesn't change.

____________

Blog: LucD notes

Twitter: lucd22


Blog: lucd.info  Twitter: @LucD22  Co-author PowerCLI Reference

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LucD
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The following script contains an action. In this case sending an email.

Some notes on your original script.

-) the EnteringMaintenanceModeEvent event was present twice. Not sure if that was the intention, so I commented it out

-) Extended Events, like the com.vmware.vc.cim.CIMGroupHealthStateChanged, require an EventType and an EventTypeId

-) I'm not sure why you say that you have to restart the VC. Afaik that is not needed

$entity = (Get-VMHost <hostname>).Extensiondata
$alarm = New-Object VMware.Vim.AlarmSpec
$alarmMgr = Get-View AlarmManager

$alarm.Name = "Status of other host hardware objects"
 
$alarm.Description = "monitor other host hardware objects"
$alarm.Enabled = $TRUE
 
$expr1 = New-Object VMware.Vim.EventAlarmExpression
$expr1.EventType = "EventEx"
$expr1.EventTypeId = "com.vmware.vc.cim.CIMGroupHealthStateChanged"
$expr1.ObjectType = "HostSystem"
$expr1.Status = "green"
 
$expr2 = New-Object VMware.Vim.EventAlarmExpression
$expr2.EventType = "EnteringMaintenanceModeEvent"
$expr2.ObjectType = "HostSystem"
$expr2.Status = "yellow"
 
# $expr3 = New-Object VMware.Vim.EventAlarmExpression
# $expr3.EventType = "EnteringMaintenanceModeEvent"
# $expr3.ObjectType = "HostSystem"
# $expr3.Status = "red"
 
$alarm.expression = New-Object VMware.Vim.OrAlarmExpression
$alarm.expression.expression += $expr1
$alarm.expression.expression += $expr2
# $alarm.expression.expression += $expr3
 
$action = New-Object VMware.Vim.AlarmAction
 
$action = New-Object VMware.Vim.AlarmTriggeringAction 
$action.action = New-Object VMware.Vim.SendEmailAction 
$action.action.toList = "lucd@lucd.info;" 
$action.action.ccList = "" 
$action.action.subject = "" 
$action.action.body = "" 
$action.green2yellow = $false 
$action.yellow2red = $false 
$action.red2yellow = $false 
$action.yellow2green = $false
 
$spec = New-Object VMware.Vim.AlarmTriggeringActionTransitionSpec 
$spec.startState = "yellow" 
$spec.finalState = "red" 
$spec.repeats = $false
 
$action.transitionSpecs = $spec
 
$alarm.action = New-Object VMware.Vim.GroupAlarmAction
$alarm.action.action += $action
 
$setting = New-Object VMware.Vim.AlarmSetting 
$setting.toleranceRange = 0 
$setting.reportingFrequency = 0 
 
$alarm.setting = $setting
 
$alarmMgr.CreateAlarm($entity.MoRef, $alarm)

____________

Blog: LucD notes

Twitter: lucd22


Blog: lucd.info  Twitter: @LucD22  Co-author PowerCLI Reference

qwert1235
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Luc,

Thanks a lot for your help!

But the main question is still unresolved…

You script will add trigger “Hardware Health Changed” (in my example I put there trigger "Entering maintenance mode" by mistake) and it’s exactly what I need, but the condition (Advanced will be empty, so it never will be triggered). Please see EmptySettings.png.

I need to be able add some advanced settings, so the end result would look like WithAdvanced.png

The question is, how can I add conditions/advanced settings for my event when creating new alarm by script?

Thank you.

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LucD
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Ok, I think I got it.

You need to use the Comparisons property to define the conditions.

Try this

$entity = (Get-VMHost <esx-hostname>).Extensiondata
$alarm = New-Object VMware.Vim.AlarmSpec
$alarmMgr = Get-View AlarmManager

$alarm.Name = "Status of other host hardware objects"
 
$alarm.Description = "monitor other host hardware objects"
$alarm.Enabled = $TRUE
 
$expr1 = New-Object VMware.Vim.EventAlarmExpression
$expr1.EventType = "EventEx"
$expr1.EventTypeId = "com.vmware.vc.cim.CIMGroupHealthStateChanged"
$expr1.ObjectType = "HostSystem"
$expr1.Status = "green"

$condition11 = New-Object VMware.Vim.EventAlarmExpressionComparison
$condition11.attributeName = "group"
$condition11.operator = "equals"
$condition11.value = "Other"

$condition12 = New-Object VMware.Vim.EventAlarmExpressionComparison
$condition12.attributeName = "newState"
$condition12.operator = "equals"
$condition12.value = "green"

$expr1.Comparisons += $condition11
$expr1.Comparisons += $condition12

$expr2 = New-Object VMware.Vim.EventAlarmExpression
$expr2.EventType = "EventEx"
$expr2.EventTypeId = "com.vmware.vc.cim.CIMGroupHealthStateChanged"
$expr2.ObjectType = "HostSystem"
$expr2.Status = "yellow"

$expr2.Comparisons += $condition11
$condition22 = New-Object VMware.Vim.EventAlarmExpressionComparison
$condition22.attributeName = "newState"
$condition22.operator = "equals"
$condition22.value = "yellow"
$expr2.Comparisons += $condition22

$expr3 = New-Object VMware.Vim.EventAlarmExpression
$expr3.EventType = "EventEx"
$expr3.EventTypeId = "com.vmware.vc.cim.CIMGroupHealthStateChanged"
$expr3.ObjectType = "HostSystem"
$expr3.Status = "red"

$expr3.Comparisons += $condition11
$condition32 = New-Object VMware.Vim.EventAlarmExpressionComparison
$condition32.attributeName = "newState"
$condition32.operator = "equals"
$condition32.value = "red"
$expr3.Comparisons += $condition32

$alarm.expression = New-Object VMware.Vim.OrAlarmExpression
$alarm.expression.expression += $expr1
$alarm.expression.expression += $expr2
$alarm.expression.expression += $expr3
 
$action = New-Object VMware.Vim.AlarmAction
 
$action = New-Object VMware.Vim.AlarmTriggeringAction 
$action.action = New-Object VMware.Vim.SendEmailAction 
$action.action.toList = "lucd@lucd.info;" 
$action.action.ccList = "" 
$action.action.subject = "" 
$action.action.body = "" 
$action.green2yellow = $false 
$action.yellow2red = $false 
$action.red2yellow = $false 
$action.yellow2green = $false
 
$spec = New-Object VMware.Vim.AlarmTriggeringActionTransitionSpec 
$spec.startState = "yellow" 
$spec.finalState = "red" 
$spec.repeats = $false
 
$action.transitionSpecs = $spec
 
$alarm.action = New-Object VMware.Vim.GroupAlarmAction
$alarm.action.action += $action
 
$setting = New-Object VMware.Vim.AlarmSetting 
$setting.toleranceRange = 0 
$setting.reportingFrequency = 0 
 
$alarm.setting = $setting
 
$alarmMgr.CreateAlarm($entity.MoRef, $alarm)

Note that I reused the $condition11 in all three expressions since it doesn't change.

____________

Blog: LucD notes

Twitter: lucd22


Blog: lucd.info  Twitter: @LucD22  Co-author PowerCLI Reference

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qwert1235
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Luc,

Thank you very much for your help!

That's exactly what I need.

Thanks a lot!!!

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