使用WSO2官方Kubernetes仓库在AKS部署API Manager后服务无法访问的问题求助

Hey there, let's work through this step by step to get your WSO2 API Manager up and accessible via NGINX Ingress on AKS. Since you've already got pods, services, and ingress configured, let's focus on the NGINX-specific checks that are likely causing the problem:

1. Verify NGINX Ingress Controller Health #

First, make sure the controller itself is running properly:

• Check if NGINX pods are in a healthy state:

  kubectl get pods -n ingress-nginx
  

  Look for Running status with no unexpected restarts. If pods are crashing, dig into their logs with kubectl logs -n ingress-nginx <nginx-pod-name>.
• Confirm the controller's service has an external IP assigned:

  kubectl get svc -n ingress-nginx
  

  The EXTERNAL-IP field should show a valid Azure public IP (it might take a few minutes to provision initially). If it's stuck on <pending>, there might be an issue with your AKS cluster's load balancer permissions.

2. Validate Your Ingress Resource Configuration #

Next, check if your ingress is correctly linked to NGINX and your backend service:

• Check the ingress status and assigned address:

  kubectl get ingress
  

  The ADDRESS field should match the external IP from your NGINX service. If it's empty, NGINX isn't recognizing the ingress (often due to missing ingress class annotations).
• Inspect the ingress details and events for errors:

  kubectl describe ingress <your-apim-ingress-name>
  

  Look for events like "Failed to reconcile" or "No endpoints available"—these will directly point to configuration mismatches.
• Double-check critical annotations:
  Ensure you've set the correct ingress class that matches your NGINX setup:
  • For older K8s versions: kubernetes.io/ingress.class: nginx
  • For K8s 1.19+: spec.ingressClassName: nginx
    Also confirm your rules section maps the correct paths to your WSO2 APIM service and port (WSO2 typically uses ports like 8280, 8243, or 9443 depending on the component).

3. Confirm Backend Service & Pod Connectivity #

NGINX can't route traffic if your backend service isn't pointing to healthy pods:

• Check if your WSO2 service has active endpoints:

  kubectl get endpoints <your-apim-service-name>
  

  You should see the IPs of your running WSO2 pods listed here. If empty, your service selector doesn't match pod labels, or pods aren't passing their readiness/liveness probes.
• Test connectivity from NGINX to the backend:
  Exec into a NGINX pod and curl your WSO2 service directly to rule out network issues:

  kubectl exec -n ingress-nginx <nginx-pod-name> -- curl http://<your-apim-service-name>.<your-namespace>.svc.cluster.local:<service-port>
  

  If this fails, the problem is between NGINX and your APIM pods, not the ingress routing itself.

4. Check Azure Network Configurations #

AKS has additional network layers that might block traffic:

• NSG Rules: Verify the Network Security Group attached to your AKS node pool or load balancer allows inbound traffic on ports 80/443 (or whatever ports you're using for APIM).
• DNS & IP Access: If using a custom domain, ensure it's pointed to the NGINX external IP. If testing with the IP directly, try accessing http://<nginx-external-ip>/<your-apim-path> to see if you get a response (even a 404 from WSO2 means traffic is reaching the service).

5. Dig Into NGINX Logs #

Logs are your best friend for pinpointing issues:

• Stream NGINX access logs to see if requests are coming in:

  kubectl logs -n ingress-nginx <nginx-pod-name> -f
  

  Look for HTTP status codes (503 means backend is unavailable, 404 means path mismatch, 403 means access restrictions, etc.).
• Check error logs if your NGINX deployment separates them (some setups use a separate container or log path for errors).

Common Gotchas to Watch For #

• WSO2 APIM often requires specific host headers—make sure your ingress rules include the correct host value that matches WSO2's internal configuration (check the deployment.toml files in your APIM pods).
• If using TLS, confirm your SSL certificate secret is correctly referenced in the ingress, and the domain matches the certificate.
• Some WSO2 components require context paths (like /publisher or /devportal)—ensure your ingress paths are mapped correctly to these.

Let me know if any of these steps uncover the issue, or if you need help interpreting logs/command outputs!

内容的提问来源于stack exchange，提问作者Firas SOLTANI