Microservice with Blazor Server UI inside kubernetes not working when spec.replicas > 1 #2063

truong.nguyen@outlook.com created 2 years ago

Hi, I'm having issue running the microservice template with blazor server ui running inside kubernetes. I was able to have all services and auth-server running fine inside kubernetes. Blazor Server UI runs fine if spec.replicas = 1; however, if I have Blazor Server spec.replicas > 1, I'd get a websocket connection failed from the browser. I've tried the following but none successful:

Environments:

Google GKE Kubernetes
Nginx Ingress Controller
Microservice Template v4.4.3

BlazorModule.cs

public override void PreConfigureServices(ServiceConfigurationContext context)
{
    ...

    context.Services.PreConfigure<ISignalRServerBuilder>(builder =>
    {
        builder.AddStackExchangeRedis(configuration["Redis:Configuration"], options =>
        {
            options.Configuration.ChannelPrefix = "Blazor-Channel";
        });
    });
}
        
public override void ConfigureServices(ServiceConfigurationContext context)
{
    ...
    
    context.Services.Configure<ForwardedHeadersOptions>(options =>
    {
        options.ForwardedHeaders =
            ForwardedHeaders.XForwardedFor | ForwardedHeaders.XForwardedProto;
    });
}
public override void OnApplicationInitialization(ApplicationInitializationContext context)
{
    ...
    
    app.UseCookiePolicy(); // added this, Before UseAuthentication or anything else that writes cookies.
    app.UseForwardedHeaders();
}

Ingress.yml

apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: blazor-ingress
  annotations:
    kubernetes.io/ingress.class: nginx
    nginx.ingress.kubernetes.io/ssl-redirect: "true"
    nginx.ingress.kubernetes.io/rewrite-target: /$1
    nginx.ingress.kubernetes.io/use-regex: "true"
    cert-manager.io/cluster-issuer: "letsencrypt-prod"
    nginx.ingress.kubernetes.io/affinity: "cookie"
    nginx.ingress.kubernetes.io/session-cookie-name: "affinity"
    nginx.ingress.kubernetes.io/session-cookie-expires: "14400"
    nginx.ingress.kubernetes.io/session-cookie-max-age: "14400"
    nginx.ingress.kubernetes.io/session-cookie-hash: "sha1"

If you're creating a bug/problem report, please include followings:

ABP Framework version: v4.4.3
UI type: Blazor
DB provider: EF Core
Tiered (MVC) or Identity Server Separated (Angular): yes

2 Answer(s)