asp.net-core-3.1 - ASP.NET Core 3.1 - 运行状况检查 UI 不工作

Question

我开发了一个带有自定义健康检查的 ASP.NET Core 3.1 MVC 应用程序。它工作正常，如下所示。

但是，UI 始终为空，因为/health-api 始终返回空数组。

它位于 ASP.NET 3.1 Core 应用程序中，位于 https://github.com/prawin2k/HealhCheckMVC/tree/master/HealhCheckMVC。

.NET 核心版本 - 3.1 (MVC)健康检查版本 - 最新操作系统:Windows Server 2016其他:Visual Studio 2019

Answer 1

在我的例子中，健康检查 UI 本身没有启动和崩溃 .net core 3.1 Web API 应用程序。

错误信息:某些服务无法构建(验证服务描述符“ServiceType:HealthChecks.UI.Core.Notifications.IHealthCheckFailureNotifier Lifetime:Scoped ImplementationType:HealthChecks.UI.Core.Notifications.WebHookFailureNotifier”时出错:无法解析服务在尝试激活“HealthChecks.UI.Core.Notifications.WebHookFailureNotifier”时输入“HealthChecks.UI.Core.Data.HealthChecksDb”。)

修复:添加任何UI storage provider .在我的例子中，我选择了 AddInMemoryStorage()

Startup.cs

public void ConfigureServices(IServiceCollection services)
{
    ...
    
    services.AddHealthChecks() 
        .AddDbContextCheck<PollDbContext>() //nuget: Microsoft.Extensions.Diagnostics.HealthChecks.EntityFrameworkCore
        .AddApplicationInsightsPublisher(); //nuget: AspNetCore.HealthChecks.Publisher.ApplicationInsights

    services.AddHealthChecksUI() //nuget: AspNetCore.HealthChecks.UI
        .AddInMemoryStorage(); //nuget: AspNetCore.HealthChecks.UI.InMemory.Storage
        
    ...
}

public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
{
    ...
    
    app.UseHealthChecks("/healthcheck", new HealthCheckOptions
    {
        Predicate = _ => true,
        ResponseWriter = UIResponseWriter.WriteHealthCheckUIResponse //nuget: AspNetCore.HealthChecks.UI.Client
    });
    
    //nuget: AspNetCore.HealthChecks.UI
    app.UseHealthChecksUI(options =>
    {
        options.UIPath = "/healthchecks-ui";
        options.ApiPath = "/health-ui-api";
    });
    ...
}

appsettings.json

"HealthChecks-UI": {
    "DisableMigrations": true,
    "HealthChecks": [
        {
            "Name": "PollManager",
            "Uri": "/healthcheck"
        }
    ],
    "Webhooks": [
        {
            "Name": "",
            "Uri": "",
            "Payload": "",
            "RestoredPayload": ""
        }
    ],
    "EvaluationTimeOnSeconds": 10,
    "MinimumSecondsBetweenFailureNotifications": 60,
    "MaximumExecutionHistoriesPerEndpoint": 15
}