okami101/blog
2
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases 46 Wiki Activity

init k8s guide

Browse Source
This commit is contained in:
Adrien Beaudouin
2023-08-26 15:35:44 +02:00
parent 2558c30189
commit 6c4a18cceb
1 changed files with 12 additions and 43 deletions
Download Patch File Download Diff File Expand all files Collapse all files

55
content/posts/17-build-your-own-kubernetes-cluster-part-8/index.md
View File

@ -805,57 +805,26 @@ After push, you should see `/metrics` live. Let's step back and exclude this int
* Force on the app side to listen only on private network on `/metrics` and `/healthz` endpoints
* Push all the app logic under `/api` path and let Traefik to include only this path
Let's do the option 2. Add the route prefix convention:
Let's do the option 2. Add the `api/` prefix to controllers to expose:
{{< highlight host="kuberocks-demo" file="src/KubeRocks.WebApi/Conventions/RoutePrefixConvention.cs" >}}
{{< highlight host="kuberocks-demo" file="src/KubeRocks.WebApi/Controllers/ArticlesController.cs" >}}
```cs
using Microsoft.AspNetCore.Mvc.ApplicationModels;
using Microsoft.AspNetCore.Mvc.Routing;
namespace KubeRocks.WebApi.Conventions;
public class RoutePrefixConvention : IApplicationModelConvention
{
private readonly AttributeRouteModel _routePrefix;
public RoutePrefixConvention(IRouteTemplateProvider route)
{
_routePrefix = new AttributeRouteModel(route);
}
public void Apply(ApplicationModel application)
{
foreach (var selector in application.Controllers.SelectMany(c => c.Selectors))
{
selector.AttributeRouteModel = selector.AttributeRouteModel != null
? AttributeRouteModel.CombineAttributeRouteModel(_routePrefix, selector.AttributeRouteModel)
: _routePrefix;
}
}
//...
[ApiController]
[Route("api/[controller]")]
public class ArticlesController {
//...
}
```
{{< /highlight >}}
Add this convention to controllers:
{{< alert >}}
You may use ASP.NET API versioning, which work the same way with [versioning URL path](https://github.com/dotnet/aspnet-api-versioning/wiki/Versioning-via-the-URL-Path).
{{< /alert >}}
{{< highlight host="kuberocks-demo" file="src/KubeRocks.WebApi/Program.cs" >}}
```cs
//...
builder.Services.AddControllers(opt =>
{
opt.Conventions.Add(
new RoutePrefixConvention(new RouteAttribute("/api"))
);
});
//...
```
{{< /highlight >}}
Now all MVC controllers, and ONLY the MVC controllers, will be under `/api` path. All is left is to add a path prefix to include only the API endpoints:
All is left is to include only the endpoints under `/api` prefix on Traefik IngressRoute:
{{< highlight host="demo-kube-flux" file="clusters/demo/kuberocks/deploy-demo.yaml" >}}
@ -872,7 +841,7 @@ spec:
{{< /highlight >}}
Now the new URL is `https://demo.kube.rocks/api/Articles`. Now any path different than `api` will return a 404, and internal path as `https://demo.kube.rocks/metrics` is not accessible anymore. The other additional advantage simple to put a separated frontend project under `/` path, which can use the under API without any CORS problem natively.
Now the new URL is `https://demo.kube.rocks/api/Articles`. Any path different from `api` will return the Traefik 404 page, and internal paths as `https://demo.kube.rocks/metrics` is not accessible anymore. An other additional advantage of this config, it's simple to put a separated frontend project under `/` path, which can use the under API without any CORS problem natively.
### Prometheus integration