Not all Information is appearing in Kibana (Serilog) - serilog

Question

When I run my AspNetCore V5 app I only see logging appear in Kibana up to the point I call CreateHostBuilder(args).
So, in Kibana I see
Step 1
and
Starting app
But nothing after that. Even if I add Log.Information("Requested data"); in a controller method that is being executed, I don't see it.
appsettings.json
{
"Serilog": {
"MinimumLevel": {
"Default": "Information",
"Override": {
"Microsoft": "Information",
"System": "Warning"
}
}
},
"ElasticConfiguration": {
"Uri": "http://localhost:9200"
},
"AllowedHosts": "*"
}
Program.cs
using Microsoft.AspNetCore.Hosting;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.Hosting;
using Serilog;
using Serilog.Sinks.Elasticsearch;
using System;
using System.Reflection;
namespace BlazorElkSerilogTest.Server
{
public class Program
{
public static void Main(string[] args)
{
//configure logging first
ConfigureLogging();
Log.Information("Step {step}", 1);
IHostBuilder hostBuilder = CreateHostBuilder(args);
Log.Information("Step {step}", 2);
IHost host = hostBuilder.Build();
Log.Information("Step {step}", 3);
host.Run();
}
static void ConfigureLogging()
{
var environment = Environment.GetEnvironmentVariable("ASPNETCORE_ENVIRONMENT");
var configuration = new ConfigurationBuilder()
.AddJsonFile("appsettings.json", optional: false, reloadOnChange: true)
.AddJsonFile(
$"appsettings.{Environment.GetEnvironmentVariable("ASPNETCORE_ENVIRONMENT")}.json",
optional: true)
.Build();
Log.Logger = new LoggerConfiguration()
.Enrich.FromLogContext()
.Enrich.WithMachineName()
.WriteTo.Debug()
.WriteTo.Console()
.WriteTo.Elasticsearch(ConfigureElasticSink(configuration, environment))
.Enrich.WithProperty("Environment", environment)
.ReadFrom.Configuration(configuration)
.CreateLogger();
}
static ElasticsearchSinkOptions ConfigureElasticSink(IConfigurationRoot configuration, string environment)
{
return new ElasticsearchSinkOptions(new Uri(configuration["ElasticConfiguration:Uri"]))
{
AutoRegisterTemplate = true,
IndexFormat = $"{Assembly.GetExecutingAssembly().GetName().Name.ToLower().Replace(".", "-")}-{environment?.ToLower().Replace(".", "-")}-{DateTime.UtcNow:yyyy-MM}"
};
}
public static IHostBuilder CreateHostBuilder(string[] args)
{
try
{
Log.Information("Starting app");
return Host.CreateDefaultBuilder(args)
.ConfigureWebHostDefaults(webBuilder =>
{
webBuilder.UseStartup<Startup>();
})
.ConfigureAppConfiguration(configuration =>
{
configuration.AddJsonFile("appsettings.json", optional: false, reloadOnChange: true);
configuration.AddJsonFile(
$"appsettings.{Environment.GetEnvironmentVariable("ASPNETCORE_ENVIRONMENT")}.json",
optional: true);
})
.UseSerilog();
}
catch (Exception e)
{
Log.Fatal(e, "Application startup failed");
throw;
}
finally
{
Log.CloseAndFlush();
}
}
}
}

Answer 1

The try/catch/finally should wrap the code in Main, not CreateHostBuilder - otherwise the logger is closed before the app runs!