[BUG] booking-api CrashLoopBackOff — ConfigMap key mismatch

[alain-Sortnext]

Bug — HIGH

Service: booking-api
Status: CrashLoopBackOff

Problem

infrastructure/kubernetes/deployment.yaml references ConfigMap key DB_HOST but infrastructure/kubernetes/configmap.yaml defines the key as DATABASE_HOST.

Kubernetes cannot inject the environment variable — pod crashes on startup.

Steps to reproduce

kubectl get pods  # shows CrashLoopBackOff
kubectl logs booking-api-<pod-id> --previous
kubectl describe pod booking-api-<pod-id>

Fix

Either rename DATABASE_HOST → DB_HOST in configmap.yaml, or update the deployment to reference DATABASE_HOST.

Business Impact

booking-api is unavailable. All client bookings failing. Part of INC-2024-047 context.