ingress to target one pod

target-one-pod.sh

# 1) Add a unique label to the target pod
kubectl -n "$NS" label pod "$POD" singled=true --overwrite

# 2) Service that selects only that pod
cat <<'YAML' | envsubst | kubectl apply -f -
apiVersion: v1
kind: Service
metadata:
  name: web-single
  namespace: ${NS}
spec:
  selector:
    app: web
    singled: "true"
  ports:
  - port: 80
    targetPort: 8080
YAML

# 3) Ingress host that points to that one-pod Service
cat <<'YAML' | envsubst | kubectl apply -f -
apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: web-single
  namespace: ${NS}
spec:
  ingressClassName: nginx
  rules:
  - host: ${POD}.${NS}.app.${LB_IP}.sslip.io
    http:
      paths:
      - path: /
        pathType: Prefix
        backend:
          service:
            name: web-single
            port:
              number: 80
YAML

# 4) Call that specific pod via Ingress
curl -sS "http://${POD}.${NS}.app.${LB_IP}.sslip.io/hostname"