[13933] FenceAgent: no response to the SNMP queries

PSAlert_13933_SCL_ALERT_FENCEAGENT_NO_RESPONSE_Monitor (UnitMonitor)

Knowledge Base article:

Summary

Fabric fencing is configured and a node has lost network access or the FibreChannel switch is unresponsive. Possible causes of the error are: (a) The server has experienced a total loss of network access to the FibreChannel switch(es). (b) A FibreChannel switch has become unresponsive to snmp requests. (c) The dependent r/w community string has been changed or deleted.

For the Cisco MDS FibreChannel switch with firmware version 2.1 or later, the default VSAN (VSAN 1) is likely disabled, which causes fcFeFabricName (FA-MIB defined) to be unassigned (all zeros). Currently Matrix Server uses the OID assignment for fcFeFabricName to probe connected FC switches and will return the above error messages if it is unable to determine a value for fcFeFabricName. The messages can be quiesced by enabling the default VSAN (VSAN 1).

The following utility specifies whether a server can communicate with the FibreChannel switch. The command displays the name service entries of the WWPN and the Fabric IDs of the switch. It may take approximately five or six seconds for the output to be displayed.

PSANinfo -c <snmp community string> <IP address of FC switch>

Element properties:

Target

PolyServe.MatrixServer.Cluster

Parent Monitor

System.Health.AvailabilityState

Category

Custom

Enabled

True

Alert Generate

True

Alert Severity

Error

Alert Priority

Normal

Alert Auto Resolve

True

Monitor Type

Microsoft.Windows.2SingleEventLog2StateMonitorType

Remotable

True

Accessibility

Public

Alert Message

FenceAgent: no response to the SNMP queries

FenceAgent {0}: no response to queries from {1}.

RunAs

Default

Source Code:

<UnitMonitor ID="PSAlert_13933_SCL_ALERT_FENCEAGENT_NO_RESPONSE_Monitor" Accessibility="Public" Enabled="true" Target="PolyServe.MatrixServer.Cluster" ParentMonitorID="Health!System.Health.AvailabilityState" Remotable="true" Priority="Normal" TypeID="Windows!Microsoft.Windows.2SingleEventLog2StateMonitorType" ConfirmDelivery="false">

  <Category>Custom</Category>

  <AlertSettings AlertMessage="PSAlert_13933_SCL_ALERT_FENCEAGENT_NO_RESPONSE_AlertMessageResourceID">

    <AlertOnState>Error</AlertOnState>

    <AutoResolve>true</AutoResolve>

    <AlertPriority>Normal</AlertPriority>

    <AlertSeverity>Error</AlertSeverity>

    <AlertParameters>

      <AlertParameter1>$Data/Context/Params/Param[1]$</AlertParameter1>

      <AlertParameter2>$Data/Context/Params/Param[2]$</AlertParameter2>

    </AlertParameters>

  </AlertSettings>

  <OperationalStates>

    <OperationalState ID="PSAlert_13933_SCL_ALERT_FENCEAGENT_NO_RESPONSE_Monitor_Alert" MonitorTypeStateID="FirstEventRaised" HealthState="Error"/>

    <OperationalState ID="PSAlert_13933_SCL_ALERT_FENCEAGENT_NO_RESPONSE_Monitor_Resolve" MonitorTypeStateID="SecondEventRaised" HealthState="Success"/>

  </OperationalStates>

  <Configuration>

    <FirstComputerName>.</FirstComputerName>

    <FirstLogName>MatrixServer</FirstLogName>

    <FirstExpression>

      <And>

        <Expression>

          <SimpleExpression>

            <ValueExpression>

              <XPathQuery Type="UnsignedInteger">EventDisplayNumber</XPathQuery>

            </ValueExpression>

            <Operator>Equal</Operator>

            <ValueExpression>

              <Value Type="UnsignedInteger">13933</Value>

            </ValueExpression>

          </SimpleExpression>

        </Expression>

        <Expression>

          <RegExExpression>

            <ValueExpression>

              <XPathQuery Type="String">Params/Param[3]</XPathQuery>

            </ValueExpression>

            <Operator>MatchesRegularExpression</Operator>

            <Pattern>$Target/Property[Type="PolyServe.MatrixServer.PSObject"]/ObjectKey$</Pattern>

          </RegExExpression>

        </Expression>

      </And>

    </FirstExpression>

    <SecondComputerName>.</SecondComputerName>

    <SecondLogName>MatrixServer</SecondLogName>

    <SecondExpression>

      <And>

        <Expression>

          <SimpleExpression>

            <ValueExpression>

              <XPathQuery Type="UnsignedInteger">EventDisplayNumber</XPathQuery>

            </ValueExpression>

            <Operator>Equal</Operator>

            <ValueExpression>

              <Value Type="UnsignedInteger">13934</Value>

            </ValueExpression>

          </SimpleExpression>

        </Expression>

        <Expression>

          <RegExExpression>

            <ValueExpression>

              <XPathQuery Type="String">Params/Param[3]</XPathQuery>

            </ValueExpression>

            <Operator>MatchesRegularExpression</Operator>

            <Pattern>$Target/Property[Type="PolyServe.MatrixServer.PSObject"]/ObjectKey$</Pattern>

          </RegExExpression>

        </Expression>

      </And>

    </SecondExpression>

  </Configuration>

</UnitMonitor>