StartupcsMetrics.cs

public void ConfigureServices(IServiceCollection services)
{
    var database = "appmetricsdemo";
    var uri = new Uri("http://127.0.0.1:8086");

    services.AddMetrics(options =>
        {
            options.WithGlobalTags((globalTags, info) =>
            {
                globalTags.Add("app", info.EntryAssemblyName);
                globalTags.Add("env", "stage");
            });
        })
        .AddHealthChecks()
        .AddReporting(
            factory =>
            {
                factory.AddInfluxDb(
                    new InfluxDBReporterSettings
                    {
                        InfluxDbSettings = new InfluxDBSettings(database, uri),
                        ReportInterval = TimeSpan.FromSeconds(5)
                    });
            })
        .AddMetricsMiddleware(options => options.IgnoredHttpStatusCodes = new[] { 404 });

    services.AddMvc(options => options.AddMetricsResourceFilter());
}

// This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
public void Configure(IApplicationBuilder app, IHostingEnvironment env, ILoggerFactory loggerFactory, IApplicationLifetime lifetime)
{
    loggerFactory.AddConsole(Configuration.GetSection("Logging"));
    app.UseMetrics();
    app.UseMetricsReporting(lifetime);
    app.UseMvc();
}