use .net 8 app

content/posts/16-a-beautiful-gitops-day-6/index.md

@@ -303,7 +303,7 @@ You should be able to log in `https://gitea.kube.rocks` with chosen admin creden
 
 ### Push a basic Web API project
 
-Let's generate a basic .NET Web API project. Create a new dotnet project like following (you may install [last .NET SDK](https://dotnet.microsoft.com/en-us/download)):
+Let's generate a basic .NET Web API project. Create a new dotnet 8 project like following (you may install [.NET 8 SDK](https://dotnet.microsoft.com/en-us/download)):
 
 ```sh
 mkdir kuberocks-demo
@@ -311,7 +311,7 @@ cd kuberocks-demo
 dotnet new sln
 dotnet new gitignore
 dotnet new editorconfig
-dotnet new webapi -o src/KubeRocks.WebApi
+dotnet new webapi -o src/KubeRocks.WebApi --use-controllers
 dotnet sln add src/KubeRocks.WebApi
 git init
 git add .

content/posts/17-a-beautiful-gitops-day-7/index.md

@@ -193,7 +193,7 @@ Firstly create following files in root of your repo that we'll use for building
 {{< highlight host="kuberocks-demo" file="Dockerfile" >}}
 
 ```Dockerfile
-FROM mcr.microsoft.com/dotnet/aspnet:7.0
+FROM mcr.microsoft.com/dotnet/aspnet:8.0
 
 WORKDIR /publish
 COPY /publish .
@@ -253,7 +253,7 @@ jobs:
             type: registry-image
             source:
               repository: mcr.microsoft.com/dotnet/sdk
-              tag: "7.0"
+              tag: "8.0"
           inputs:
             - name: source-code
               path: .

content/posts/19-a-beautiful-gitops-day-9/index.md

@@ -135,7 +135,11 @@ builder.Services.AddOpenTelemetry()
     {
         b
             .AddAspNetCoreInstrumentation()
-            .AddPrometheusExporter();
+            .AddPrometheusExporter()
+            .AddMeter(
+                "Microsoft.AspNetCore.Hosting",
+                "Microsoft.AspNetCore.Server.Kestrel"
+            );
     });
 
 var app = builder.Build();
@@ -149,9 +153,7 @@ app.UseOpenTelemetryPrometheusScrapingEndpoint();
 
 Relaunch app and go to `https://demo.kube.rocks/metrics` to confirm it's working. It should show metrics after each endpoint call, simply try `https://demo.kube.rocks/Articles`.
 
-{{< alert >}}
-.NET metrics are currently pretty basic, but the next .NET 8 version will provide far better metrics from internal components allowing some [useful dashboard](https://github.com/JamesNK/aspnetcore-grafana).
-{{< /alert >}}
+Now you can easily import ASP.NET [specific grafana dashboards](https://github.com/dotnet/aspire/tree/main/src/Grafana) for visualizing.
 
 #### Hide internal endpoints