ELMAH未登录Azure

Question

我尝试使用elmah在我的服务器上记录错误。如果我的本地pc发生异常，elmah将保存此错误。但是在我上传到azure之后，它就不再工作了。数据库配置是正确的，因为我可以使用以下语句(Local/Azure)记录错误：

Elmah.ErrorSignal.FromCurrentContext().Raise(e);

我认为这是配置错误，因为azure有不同的IIS版本和不同的服务器配置。

这是我的web.config

<?xml version="1.0" encoding="utf-8"?>
<configuration>
  <configSections>
    <section name="RetryPolicyConfiguration" type="Microsoft.Practices.EnterpriseLibrary.WindowsAzure.TransientFaultHandling.Configuration.RetryPolicyConfigurationSettings, Microsoft.Practices.EnterpriseLibrary.WindowsAzure.TransientFaultHandling, Version=5.1.1209.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" requirePermission="true" />
    <section name="typeRegistrationProvidersConfiguration" type="Microsoft.Practices.EnterpriseLibrary.Common.Configuration.TypeRegistrationProvidersConfigurationSection, Microsoft.Practices.EnterpriseLibrary.Common, Version=5.0.505.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" />
    <sectionGroup name="elmah">
      <section name="security" requirePermission="false" type="Elmah.SecuritySectionHandler, Elmah" />
      <section name="errorLog" requirePermission="false" type="Elmah.ErrorLogSectionHandler, Elmah" />
      <section name="errorFilter" requirePermission="false" type="Elmah.ErrorFilterSectionHandler, Elmah" />
    </sectionGroup>
  </configSections>
  <RetryPolicyConfiguration defaultRetryStrategy="Fixed Interval Retry Strategy">
    <incremental name="Incremental Retry Strategy" maxRetryCount="5" retryIncrement="00:00:03" />
    <fixedInterval name="Fixed Interval Retry Strategy" maxRetryCount="6" retryInterval="00:00:04" />
    <exponentialBackoff name="Exponential Backoff Retry Strategy" />
  </RetryPolicyConfiguration>
  <typeRegistrationProvidersConfiguration>
    <clear />
    <add name="Caching" sectionName="cachingConfiguration" />
    <add name="Cryptography" sectionName="securityCryptographyConfiguration" />
    <add name="Exception Handling" sectionName="exceptionHandling" />
    <add name="Instrumentation" sectionName="instrumentationConfiguration" />
    <add name="Logging" sectionName="loggingConfiguration" />
    <add name="Policy Injection" sectionName="policyInjection" />
    <add name="Security" sectionName="securityConfiguration" />
    <add name="Data Access" providerType="Microsoft.Practices.EnterpriseLibrary.Data.Configuration.DatabaseSyntheticConfigSettings, Microsoft.Practices.EnterpriseLibrary.Data" />
    <add name="Validation" providerType="Microsoft.Practices.EnterpriseLibrary.Validation.Configuration.ValidationTypeRegistrationProvider, Microsoft.Practices.EnterpriseLibrary.Validation" />
    <add sectionName="RetryPolicyConfiguration" name="RetryPolicyConfiguration" />
  </typeRegistrationProvidersConfiguration>
  <connectionStrings>
    <add providerName="System.Data.SqlClient" name="elmah" connectionString="..." />
  </connectionStrings>
  <system.web>
    <globalization fileEncoding="utf-8" requestEncoding="utf-8" responseEncoding="utf-8" responseHeaderEncoding="utf-8" uiCulture="en-US" culture="en-US" enableClientBasedCulture="false" />
    <httpRuntime maxRequestLength="2000" enableVersionHeader="false" />
    <compilation debug="true" targetFramework="4.5">
      <assemblies>
        <add assembly="System.Web.Abstractions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />
        <add assembly="System.Web.Helpers, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />
        <add assembly="System.Web.Routing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />
        <add assembly="System.Web.Mvc, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />
        <add assembly="System.Web.WebPages, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />
        <add assembly="System.Data.Entity, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" />
        <add assembly="System.Web.WebPages.Razor, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />
      </assemblies>
    </compilation>
    <authentication mode="Forms">
      <forms loginUrl="~/#login" defaultUrl="~/" timeout="7200" />
    </authentication>
    <customErrors mode="On"></customErrors>
    <trust level="Full" />
    <machineKey validationKey="..." decryptionKey="..." validation="SHA1" decryption="AES" />
    <pages enableSessionState="false" enableViewState="false" validateRequest="false" controlRenderingCompatibilityVersion="4.0">
      <namespaces>
        <add namespace="System.Web.Helpers" />
        <add namespace="System.Web.Mvc" />
        <add namespace="System.Web.Mvc.Ajax" />
        <add namespace="System.Web.Mvc.Html" />
        <add namespace="System.Web.Routing" />
        <add namespace="System.Web.WebPages" />
      </namespaces>
    </pages>
    <sessionState mode="Off" timeout="120" />
    <httpHandlers>
      <add verb="POST,GET,HEAD" path="elmah.axd" type="Elmah.ErrorLogPageFactory, Elmah" />
    </httpHandlers>
    <httpModules>
      <add name="ErrorLog" type="Elmah.ErrorLogModule, Elmah" />
      <add name="ErrorFilter" type="Elmah.ErrorFilterModule, Elmah" />
    </httpModules>
  </system.web>
  <runtime>
    <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
      <dependentAssembly>
        <assemblyIdentity name="System.Web.Helpers" publicKeyToken="31bf3856ad364e35" />
        <bindingRedirect oldVersion="1.0.0.0-2.0.0.0" newVersion="2.0.0.0" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="System.Web.Mvc" publicKeyToken="31bf3856ad364e35" />
        <bindingRedirect oldVersion="1.0.0.0-4.0.0.0" newVersion="4.0.0.0" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="System.Web.WebPages" publicKeyToken="31bf3856ad364e35" />
        <bindingRedirect oldVersion="0.0.0.0-2.0.0.0" newVersion="2.0.0.0" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="System.Web.WebPages.Razor" publicKeyToken="31bf3856ad364e35" />
        <bindingRedirect oldVersion="1.0.0.0" newVersion="2.0.0.0" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="Microsoft.Practices.TransientFaultHandling.Core" publicKeyToken="31bf3856ad364e35" culture="neutral" />
        <bindingRedirect oldVersion="0.0.0.0-5.1.1209.0" newVersion="5.1.1209.0" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="WebGrease" publicKeyToken="31bf3856ad364e35" culture="neutral" />
        <bindingRedirect oldVersion="0.0.0.0-1.3.0.0" newVersion="1.3.0.0" />
      </dependentAssembly>
    </assemblyBinding>
  </runtime>
  <startup>
    <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.0" />
  </startup>
  <system.webServer>
    <modules runAllManagedModulesForAllRequests="true">
      <add name="ErrorLog" type="Elmah.ErrorLogModule, Elmah" preCondition="managedHandler" />
      <add name="ErrorFilter" type="Elmah.ErrorFilterModule, Elmah" preCondition="managedHandler" />
    </modules>
    <staticContent>
      <clientCache cacheControlMode="UseMaxAge" cacheControlMaxAge="2.00:00:00" />
    </staticContent>
    <urlCompression doStaticCompression="true" doDynamicCompression="true" dynamicCompressionBeforeCache="false" />
    <handlers>
      <add name="Elmah" path="elmah.axd" verb="POST,GET,HEAD" type="Elmah.ErrorLogPageFactory, Elmah" preCondition="integratedMode" />
    </handlers>
    <validation validateIntegratedModeConfiguration="false" />
    <httpErrors errorMode="Custom">
      <clear />
      <error statusCode="404" path="/error404" responseMode="ExecuteURL" />
    </httpErrors>
  </system.webServer>
  <elmah>
    <security allowRemoteAccess="true" />
    <errorLog type="Elmah.SqlErrorLog, Elmah" connectionStringName="elmah" applicationName="..." />
  </elmah>
  <location path="elmah.axd" inheritInChildApplications="false">
    <system.web>
      <authorization>
        <allow roles="admin" />
        <deny users="*" />
      </authorization>
      <httpHandlers>
        <add verb="POST,GET,HEAD" path="elmah.axd" type="Elmah.ErrorLogPageFactory, Elmah" />
      </httpHandlers>
    </system.web>
    <system.webServer>
      <handlers>
        <add name="ELMAH" verb="POST,GET,HEAD" path="elmah.axd" type="Elmah.ErrorLogPageFactory, Elmah" preCondition="integratedMode" />
      </handlers>
    </system.webServer>
  </location>
</configuration>

Answer 1

出于好奇心，将Elmah处理程序从<location>节点中删除，并将它们移回<system.web>和<system.webServer>节点下，看看是否可以工作。我知道这不是一个理想的解决方案，但它将确保您的日志是开箱即用的，不需要特殊处理。

我之所以建议这样做，是因为我在Azure上遇到了与Elmah完全相同的问题。它在没有在节点中处理的情况下正在寻找工作，但是当我移动它来保护它的时候，它停止了工作。我还没有时间挖掘根本原因，但这可能会给您一些调查的东西。

Answer 2

您可能已经解决了这个问题，以防万一--当您将我的web.config与您的比较时，似乎缺少<system.webServer>节点中的<modules>部分。这同样适用于<system.web>节点。

下面是我的：

<system.web>
    <httpModules>
      <add name="ErrorLog" type="Elmah.ErrorLogModule, Elmah" />
    </httpModules>
    <httpHandlers>
      <add verb="POST,GET,HEAD" path="elmah.axd" type="Elmah.ErrorLogPageFactory, Elmah" />
    </httpHandlers>
</system.web>

<system.webServer>
    <modules runAllManagedModulesForAllRequests="true">
      <add name="ErrorLog" type="Elmah.ErrorLogModule, Elmah" />
    </modules>
    <handlers>
      <add name="Elmah" verb="POST,GET,HEAD" path="elmah.axd" type="Elmah.ErrorLogPageFactory, Elmah" />
    </handlers>
</system.webServer>

同样，请注意<httpModules>和<modules>节点。