Restructure project: Move AKS cluster to beispiel-k8s-cluster directory

Major improvements:
- Import existing Azure AKS cluster with aztfexport
- Optimize VM size from Standard_D4d_v4 to Standard_D2as_v6 (50% cost reduction)
- Configure availability zones to [1, 2]
- Add comprehensive monitoring setup:
  * New Log Analytics Workspace
  * OMS Agent integration
  * Data Collection Rule for Container Insights
  * Email alerts for CPU and Memory
- Refactor configuration:
  * Extract all values to variables.tf
  * Rename resources with meaningful names
  * Add detailed outputs.tf
- Add project documentation:
  * Comprehensive README.md
  * cluster-status-commands.md with useful Azure CLI commands
  * terraform.tfvars.example template
  * .gitignore for sensitive files

Infrastructure changes:
- Resource Group: trusted_ai_demo_rg (Germany West Central)
- AKS Cluster: trai_k8s_cluster (Kubernetes 1.33)
- Node Pool: 2-3 nodes with auto-scaling
- Network: VNet 10.0.0.0/16, Subnet 10.0.0.0/24
- Monitoring: Full Container Insights with alerts

Cost optimization: ~€75/month (down from ~€140/month)

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

beispiel-terraform/beispiel-k8s-cluster/cluster-status-commands.md

@@ -0,0 +1,36 @@
+# AKS Cluster Status Befehle
+
+Hier sind die Bash-Befehle, mit denen ich den Cluster-Status geprüft habe:
+
+```bash
+# 1. Cluster-Status prüfen
+az aks show --resource-group trusted_ai_demo_rg --name trai_k8s_cluster --query "{name:name, powerState:powerState.code, provisioningState:provisioningState, kubernetesVersion:kubernetesVersion, nodeResourceGroup:nodeResourceGroup}" -o table
+
+# 2. Node Pool Status prüfen
+az aks nodepool list --resource-group trusted_ai_demo_rg --cluster-name trai_k8s_cluster --query "[].{name:name, count:count, vmSize:vmSize, provisioningState:provisioningState, powerState:powerState.code}" -o table
+
+# 3. Kubeconfig herunterladen (für kubectl Zugriff)
+az aks get-credentials --resource-group trusted_ai_demo_rg --name trai_k8s_cluster --overwrite-existing
+
+# 4. Kubernetes Nodes anzeigen
+kubectl get nodes
+
+# 5. Alle Pods in allen Namespaces anzeigen
+kubectl get pods -A
+```
+
+## Zusätzliche nützliche Befehle
+
+```bash
+# Detaillierte Cluster-Informationen
+az aks show --resource-group trusted_ai_demo_rg --name trai_k8s_cluster -o json
+
+# Cluster-Ressourcen anzeigen
+kubectl top nodes
+
+# Spezifische Namespace-Pods anzeigen
+kubectl get pods -n kube-system
+
+# Cluster-Events anzeigen
+kubectl get events -A --sort-by='.lastTimestamp'
+```