I’ve looked at multiple StackOverflow answers and still cannot get Serilog to write to a sink beside the local console. Using --verbose doesn’t reveal anything.

I’ve tried using as sinks:

• Console
• BetterStack
• GrafanaLoki

Again, the only one that works is Console.

I’m using .NET 8 and Azure Functions in Isolated Mode.

Here is my source:

using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Hosting;
using Microsoft.Extensions.Logging;
using Serilog;
using Serilog.Extensions.Logging;
using Serilog.Formatting.Compact;
using Serilog.Sinks.Grafana.Loki;

Log.Logger = new LoggerConfiguration()
    .MinimumLevel.Override("Microsoft", Serilog.Events.LogEventLevel.Warning)
    .Enrich.FromLogContext()
    .WriteTo.Console()
    .WriteTo.BetterStack(sourceToken: "redacted")
    .WriteTo.GrafanaLoki(
        "https://logs-prod-us-central2.grafana.net",
        credentials: new LokiCredentials()
        {
            Login = "######",
            Password = "redacted"
        })
    .CreateLogger();


var host = new HostBuilder()
    .ConfigureFunctionsWorkerDefaults()
    .ConfigureServices(services =>
    {

// I've tried uncommenting each of the three following lines, but nothing works.

        //services.AddSerilog(Log.Logger, dispose: true);
        //services.AddLogging(lb => lb.AddSerilog(dispose: true));
        //services.AddSingleton<ILoggerProvider>(new SerilogLoggerProvider(logger));
    })
    .UseSerilog((ctx, cfg) =>
    {
        cfg.Enrich.WithProperty("Application", ctx.HostingEnvironment.ApplicationName)
            .Enrich.WithProperty("Environment", ctx.HostingEnvironment.EnvironmentName)
            .WriteTo.Console(new RenderedCompactJsonFormatter());
    })
    .Build();

try
{
    Log.Information("Starting the Host");
    host.Run();
}
catch (Exception exc)
{
    Log.Fatal(exc, "Host Terminated Unexpectedly");
}

Log.CloseAndFlush();