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为什么Application Insights会阻止我的工作者角色启动？

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我有一个具有单个辅助角色的Azure Cloud 服务，每次都会部署，启动和运行，但我遇到了一些我想用Application Insights诊断的间歇性问题 . 我按照this article以及here的指示进行操作 .

在安装了块包并添加了一行代码之后，我在调试和发布模式下在本地运行了 Cloud 服务，并且能够看到向Application Insights资源报告的AI信息 . 所以我将其打包并将新配置上传到我的 Cloud 服务 .

但是从 Cloud 端开始，工作者角色实际上不会启动 - 它会进入循环死亡螺旋，并且在"Diagnose and Solve Problems"刀片中，我得到以下错误的变体，总是大约"System.Threading.AsyncLocal'1'"并且无法加载RoleEntryPoint . 以下this article没有对事情有所了解，因为错误几乎告诉我为什么它会继续回收，但没有任何关于如何应对的线索 .

Production - WebReportDownloader_IN_0：BusyRole等待角色启动...无法加载角色入口点 . System.TypeLoadException：无法从程序集'mscorlib，Version = 4.0.0.0，Culture = neutral，PublicKeyToken = b77a5c561934e089'加载类型'System.Threading.AsyncLocal`1' . 位于Microsoft.ApplicationInsights.Extensibility.Implementation.TelemetryConfigurationFactory.Initialize（TelemetryConfiguration配置，TelemetryModules模块，String serializedConfiguration）的Microsoft.ApplicationInsights.Extensibility.SdkInternalOperationsMonitor.Exit（），位于WebReportDownloader的Microsoft.ApplicationInsights.Extensibility.TelemetryConfiguration.get_Active（） . C：\ Users \ User \ Source \ Repos \ Program \ WebReportDownloader \ WebReportDownloader.cs中的ctor（）：第21行---内部异常堆栈跟踪结束---在System.RuntimeTypeHandle.CreateInstance（RuntimeType类型，布尔值publicOnly， System.RuntimeType.CreateInstaultSlow的布尔值noCheck，Boolean＆canBeCached，RuntimeMethodHandleInternal＆ctor，Boolean＆bNeedSecurityCheck）（布尔值publicOnly，布尔值为skipCheckThis，布尔值fillCache，StackCrawlMark和stackMark）布尔值publicOnly，布尔值skipCheckThis，布尔值fillCache，StackCrawlMark和stackMark）在System.Activator.C Microsoft.WindowsAzure上的Microsoft.WindowsAzure.ServiceRuntime.RoleEnvironment.CreateRoleEntryPoint（RoleType roleTypeEnum）中的Microsoft.WindowsAzure.ServiceRuntime.RoleEnvironment.GetRoleEntryPoint（Assembly entryPointAssembly）上的System.Activator.CreateInstance（Type type）中的reateInstance（Type type，Boolean nonPublic） .ServiceRuntime.RoleEnvironment.InitializeRoleInternal（RoleType roleTypeEnum）[2017-09-14T15：28：21Z]最后退出时间：[2017/09 / 14,15：28：21.944] . 最后退出代码：0 .

通常我可以从搜索异常和/或细节中获得足够的提示，但这次我找不到任何类似于我的问题的东西 . 我可以猜到的是，我的配置很小但很关键，但是根据我上面链接的说明，我无法确定我的位置 .

我的ServiceConfiguration.Cloud文件...

<?xml version="1.0" encoding="utf-8"?>
<ServiceConfiguration serviceName="WebReportDownloader" xmlns="http://schemas.microsoft.com/ServiceHosting/2008/10/ServiceConfiguration" osFamily="4" osVersion="*" schemaVersion="2015-04.2.6">
  <Role name="WebReportDownloader">
    <Instances count="2" />
    <ConfigurationSettings>
      <Setting name="Microsoft.WindowsAzure.Plugins.Diagnostics.ConnectionString" value="UseDevelopmentStorage=true" />
      <Setting name="Microsoft.WindowsAzure.Plugins.RemoteAccess.Enabled" value="true" />
      <Setting name="Microsoft.WindowsAzure.Plugins.RemoteAccess.AccountUsername" value="admin" />
      <Setting name="Microsoft.WindowsAzure.Plugins.RemoteAccess.AccountEncryptedPassword" value="ENCRYPTEDVALUE" />
      <Setting name="Microsoft.WindowsAzure.Plugins.RemoteAccess.AccountExpiration" value="2018-09-01T23:59:59.0000000-04:00" />
      <Setting name="Microsoft.WindowsAzure.Plugins.RemoteForwarder.Enabled" value="true" />
      <Setting name="APPINSIGHTS_INSTRUMENTATIONKEY" value="KEYVALUE" />
    </ConfigurationSettings>
    <Certificates>
      <Certificate name="Microsoft.WindowsAzure.Plugins.RemoteAccess.PasswordEncryption" thumbprint="847EEDE0084CF57A5A774CAE9E700713726CC856" thumbprintAlgorithm="sha1" />
    </Certificates>
  </Role>
</ServiceConfiguration>

而我的ApplicationInsights.config ......

<?xml version="1.0" encoding="utf-8"?>
<ApplicationInsights xmlns="http://schemas.microsoft.com/ApplicationInsights/2013/Settings">
    <TelemetryInitializers>
        <Add Type="Microsoft.ApplicationInsights.DependencyCollector.HttpDependenciesParsingTelemetryInitializer, Microsoft.AI.DependencyCollector"/>
        <Add Type="Microsoft.ApplicationInsights.WindowsServer.AzureRoleEnvironmentTelemetryInitializer, Microsoft.AI.WindowsServer"/>
        <Add Type="Microsoft.ApplicationInsights.WindowsServer.AzureWebAppRoleEnvironmentTelemetryInitializer, Microsoft.AI.WindowsServer"/>
        <Add Type="Microsoft.ApplicationInsights.WindowsServer.BuildInfoConfigComponentVersionTelemetryInitializer, Microsoft.AI.WindowsServer"/>
    </TelemetryInitializers>
    <TelemetryModules>
        <Add Type="Microsoft.ApplicationInsights.DependencyCollector.DependencyTrackingTelemetryModule, Microsoft.AI.DependencyCollector">
            <ExcludeComponentCorrelationHttpHeadersOnDomains>
                <!-- 
        Requests to the following hostnames will not be modified by adding correlation headers. 
        This is only applicable if Profiler is installed via either StatusMonitor or Azure Extension.
        Add entries here to exclude additional hostnames.
        NOTE: this configuration will be lost upon NuGet upgrade.
        -->
                <Add>core.windows.net</Add>
                <Add>core.chinacloudapi.cn</Add>
                <Add>core.cloudapi.de</Add>
                <Add>core.usgovcloudapi.net</Add>
                <Add>localhost</Add>
                <Add>127.0.0.1</Add>
            </ExcludeComponentCorrelationHttpHeadersOnDomains>
        </Add>
        <Add Type="Microsoft.ApplicationInsights.Extensibility.PerfCounterCollector.PerformanceCollectorModule, Microsoft.AI.PerfCounterCollector">
            <!--
      Use the following syntax here to collect additional performance counters:

      <Counters>
        <Add PerformanceCounter="\Process(??APP_WIN32_PROC??)\Handle Count" ReportAs="Process handle count" />
        ...
      </Counters>

      PerformanceCounter must be either \CategoryName(InstanceName)\CounterName or \CategoryName\CounterName

      NOTE: performance counters configuration will be lost upon NuGet upgrade.

      The following placeholders are supported as InstanceName:
        ??APP_WIN32_PROC?? - instance name of the application process  for Win32 counters.
        ??APP_W3SVC_PROC?? - instance name of the application IIS worker process for IIS/ASP.NET counters.
        ??APP_CLR_PROC?? - instance name of the application CLR process for .NET counters.
      -->
        </Add>
        <Add Type="Microsoft.ApplicationInsights.Extensibility.PerfCounterCollector.QuickPulse.QuickPulseTelemetryModule, Microsoft.AI.PerfCounterCollector"/>
        <Add Type="Microsoft.ApplicationInsights.WindowsServer.DeveloperModeWithDebuggerAttachedTelemetryModule, Microsoft.AI.WindowsServer"/>
        <Add Type="Microsoft.ApplicationInsights.WindowsServer.UnhandledExceptionTelemetryModule, Microsoft.AI.WindowsServer"/>
        <Add Type="Microsoft.ApplicationInsights.WindowsServer.UnobservedExceptionTelemetryModule, Microsoft.AI.WindowsServer">
            <!--</Add>
    <Add Type="Microsoft.ApplicationInsights.WindowsServer.FirstChanceExceptionStatisticsTelemetryModule, Microsoft.AI.WindowsServer">-->
        </Add>
    </TelemetryModules>
    <TelemetryProcessors>
        <Add Type="Microsoft.ApplicationInsights.Extensibility.PerfCounterCollector.QuickPulse.QuickPulseTelemetryProcessor, Microsoft.AI.PerfCounterCollector"/>
        <Add Type="Microsoft.ApplicationInsights.Extensibility.AutocollectedMetricsExtractor, Microsoft.ApplicationInsights"/>
        <Add Type="Microsoft.ApplicationInsights.WindowsServer.TelemetryChannel.AdaptiveSamplingTelemetryProcessor, Microsoft.AI.ServerTelemetryChannel">
            <MaxTelemetryItemsPerSecond>5</MaxTelemetryItemsPerSecond>
            <ExcludedTypes>Event</ExcludedTypes>
        </Add>
        <Add Type="Microsoft.ApplicationInsights.WindowsServer.TelemetryChannel.AdaptiveSamplingTelemetryProcessor, Microsoft.AI.ServerTelemetryChannel">
            <MaxTelemetryItemsPerSecond>5</MaxTelemetryItemsPerSecond>
            <IncludedTypes>Event</IncludedTypes>
        </Add>
    </TelemetryProcessors>
    <TelemetryChannel Type="Microsoft.ApplicationInsights.WindowsServer.TelemetryChannel.ServerTelemetryChannel, Microsoft.AI.ServerTelemetryChannel"/>
<!-- 
    Learn more about Application Insights configuration with ApplicationInsights.config here: 
    http://go.microsoft.com/fwlink/?LinkID=513840

    Note: If not present, please add <InstrumentationKey>Your Key</InstrumentationKey> to the top of this file.
  --></ApplicationInsights>

我的“OnStart（）”方法，我实际设置了InstrumentationKey ...

public override bool OnStart()
        {
            // Set the maximum number of concurrent connections
            ServicePointManager.DefaultConnectionLimit = 12;
            TelemetryConfiguration.Active.InstrumentationKey = RoleEnvironment.GetConfigurationSettingValue("APPINSIGHTS_INSTRUMENTATIONKEY");

            // For information on handling configuration changes
            // see the MSDN topic at https://go.microsoft.com/fwlink/?LinkId=166357.

            bool result = base.OnStart();

            Trace.TraceInformation("WebReportDownloader has been started");

            return result;
        }

我很感激任何洞察力（哈！）或任何人都可以提供的指导......

Update:

通过进一步的实验，我确定每当我试图直接调用Application Insights程序集时（例如创建遥测客户端或直接设置ApplicationInsights资源键）或者因为跟踪而调用ApplicationInsight TraceListener时下面叫

无法从程序集'mscorlib，Version = 4.0.0.0，Culture = neutral，PublicKeyToken = b77a5c561934e089'加载类型'System.Threading.AsyncLocal`1' .

如果我执行运行时检测，我可以获得一些基本的跟踪和日志到我的Insight资源，但试图获得更多的东西仍然逃避我 .

另外，我目前的目标是.NET 4.6.1（我之前忽略的信息） .

c# azure azure-worker-roles azure-cloud-services azure-application-insights

2 回答

  • 0

    经过Azure支持的大量来回，我终于能够设置屏幕共享会话 . 这位乐于助人的绅士几乎立即将问题归结为： Because my worker role project targets .NET 4.6.1 ServiceConfiguration文件（.Cloud.cscfg和.Local.cscfg） need to be targeting osFamily 5 .

    VS17向导生成的默认值将其设置为osFamily = 4 as如下所示......

    .NET 4.5.2 configuration

    但是，我需要使一切正常运行的目标是osFamily = 5，如下所示......

    .NET 4.6.1 configuration

    在实例化TelemetryClient时，一个小的更改允许Web角色正确部署 .

    回复于
  • 2

    根据您的描述，我创建了我的Azure Cloud 服务项目，并在.NET Framework 4.5上添加了单个工作者角色目标，然后安装了Microsoft.ApplicationInsights.WindowsServer 2.4.1，并添加了您提到的用于设置检测密钥的代码，如下所示：

    WorkerRole.cs

    public class WorkerRole : RoleEntryPoint
{
    private readonly CancellationTokenSource cancellationTokenSource = new CancellationTokenSource();
    private readonly ManualResetEvent runCompleteEvent = new ManualResetEvent(false);

    public override void Run()
    {
        Trace.TraceInformation("WorkerRoleB is running");

        try
        {
            this.RunAsync(this.cancellationTokenSource.Token).Wait();
        }
        finally
        {
            this.runCompleteEvent.Set();
        }
    }

    public override bool OnStart()
    {
        // Set the maximum number of concurrent connections
        ServicePointManager.DefaultConnectionLimit = 12;

        TelemetryConfiguration.Active.InstrumentationKey = RoleEnvironment.GetConfigurationSettingValue("APPINSIGHTS_INSTRUMENTATIONKEY");

        // For information on handling configuration changes
        // see the MSDN topic at https://go.microsoft.com/fwlink/?LinkId=166357.

        bool result = base.OnStart();

        Trace.TraceInformation("WorkerRoleB has been started");

        return result;
    }

    public override void OnStop()
    {
        Trace.TraceInformation("WorkerRoleB is stopping");

        this.cancellationTokenSource.Cancel();
        this.runCompleteEvent.WaitOne();

        base.OnStop();

        Trace.TraceInformation("WorkerRoleB has stopped");
    }

    private async Task RunAsync(CancellationToken cancellationToken)
    {
        // TODO: Replace the following with your own logic.
        while (!cancellationToken.IsCancellationRequested)
        {
            Trace.TraceInformation("Working");
            await Task.Delay(1000);
        }
    }
}

    部署到Azure Cloud 服务后，它可以按预期工作，我可以从AI检索诊断数据，如下所示：

    enter image description here

    Note: 由于Install the SDK in each project表示您需要将 ApplicationInsights.config 文件设置为始终复制到输出目录 .

    此外，您可以参考quick start并在运行时检测您的应用程序以缩小此问题 . 此外，如果我遗漏了某些内容或您执行了其他特殊代码，您可以更新我的问题以解决此问题 .

    回复于

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