Unknown State

Microsoft.SQLServerAppliance.PDW.Cooling.TemperatureStateMonitor.Unknown (UnitMonitor)

This monitor detects if Temperature is in Unknown state.

Knowledge Base article:

Summary

The temperature sensor is reporting an unknown warning and is not in a normal operating state.

Treat this as a critical situation and address this situation immediately. If this situation is not addressed:

The system might shutdown if this condition is not addressed.
The sensor could fail and not able to report the temperature.

Causes

For more details, view the component's temp_status property in the PDW Admin Console or query the sys.dm_pdw_component_health_status DMV.

Resolutions

Contact Microsoft Support and provide them with the alert name and details.

To diagnose this issue,

1) Look for other alerts related to cooling devices. A possible cause is a data center air conditioning or other cooling device failure.

2) Microsoft Support will require Windows administrator access to the PDW Management node in order to access the vendor’s diagnostic tool to verify the server’s cooling devices and temperature sensors.

To resolve this issue, Microsoft Support will contact the vendor’s hardware support team. Depending on the problem, the vendor might require physical access to the appliance to replace a cooling device.

Element properties:

Target

Microsoft.SQLServerAppliance.PDW.Cooling.Temperature

Parent Monitor

System.Health.AvailabilityState

Category

AvailabilityHealth

Enabled

True

Alert Generate

True

Alert Severity

Warning

Alert Priority

Normal

Alert Auto Resolve

True

Monitor Type

Microsoft.SQLServerAppliance.PDW.ComponentTwoStateType

Remotable

True

Accessibility

Public

Alert Message

Temperature status is UNKNOWN

Appliance Name: {0}
Node Name: {1}
Component: {2}
Component Details: https://{3}/Topology/NodeDetails/{4}?compId={5}

RunAs

Default

Source Code:

<UnitMonitor ID="Microsoft.SQLServerAppliance.PDW.Cooling.TemperatureStateMonitor.Unknown" Accessibility="Public" Enabled="true" Target="PDWLibrary!Microsoft.SQLServerAppliance.PDW.Cooling.Temperature" ParentMonitorID="Health!System.Health.AvailabilityState" TypeID="Microsoft.SQLServerAppliance.PDW.ComponentTwoStateType" Remotable="true" Priority="Normal" ConfirmDelivery="false">

  <Category>AvailabilityHealth</Category>

  <AlertSettings AlertMessage="Microsoft.SQLServerAppliance.PDW.Cooling.TemperatureStateMonitor.Unknown.AlertMessage">

    <AlertOnState>Warning</AlertOnState>

    <AutoResolve>true</AutoResolve>

    <AlertPriority>Normal</AlertPriority>

    <AlertSeverity>Warning</AlertSeverity>

    <AlertParameters>

      <AlertParameter1>$Target/Property[Type="PDWLibrary!Microsoft.SQLServerAppliance.PDW.Component"]/ApplianceID$</AlertParameter1>

      <AlertParameter2>$Target/Property[Type="PDWLibrary!Microsoft.SQLServerAppliance.PDW.Component"]/NodeName$</AlertParameter2>

      <AlertParameter3>$Target/Property[Type="System!System.Entity"]/DisplayName$</AlertParameter3>

      <AlertParameter4>$Target/Property[Type="PDWLibrary!Microsoft.SQLServerAppliance.PDW.Component"]/ApplianceNetworkAddress$</AlertParameter4>

      <AlertParameter5>$Target/Property[Type="PDWLibrary!Microsoft.SQLServerAppliance.PDW.Component"]/NodeID$</AlertParameter5>

      <AlertParameter6>$Target/Property[Type="PDWLibrary!Microsoft.SQLServerAppliance.PDW.Component"]/ID$</AlertParameter6>

    </AlertParameters>

  </AlertSettings>

  <OperationalStates>

    <OperationalState ID="Good" MonitorTypeStateID="Good" HealthState="Success"/>

    <OperationalState ID="Bad" MonitorTypeStateID="Bad" HealthState="Warning"/>

  </OperationalStates>

  <Configuration>

    <IntervalSeconds>900</IntervalSeconds>

    <SyncTime/>

    <TimeoutSeconds>600</TimeoutSeconds>

    <ConnectionString>$Target/Property[Type="PDWLibrary!Microsoft.SQLServerAppliance.PDW.Component"]/ApplianceID$</ConnectionString>

    <NodeName>$Target/Property[Type="PDWLibrary!Microsoft.SQLServerAppliance.PDW.Component"]/NodeName$</NodeName>

    <GroupName>$Target/Property[Type="PDWLibrary!Microsoft.SQLServerAppliance.PDW.Component"]/GroupName$</GroupName>

    <ComponentName>$Target/Property[Type="System!System.Entity"]/DisplayName$</ComponentName>

    <MonitoredState>Unknown</MonitoredState>

  </Configuration>

</UnitMonitor>