Ch15 Error on ingress deployment

[rpjeff]

Chapter 15 command produces and error on later API versions,

# kubectl apply -f hello-kiamol/ingress/localhost.yaml 
Error from server (BadRequest): error when creating "hello-kiamol/ingress/localhost.yaml": Ingress in version "v1" cannot be handled as a Ingress: strict decoding error: unknown field "spec.rules[0].http.paths[0].backend.serviceName", unknown field "spec.rules[0].http.paths[0].backend.servicePort"

The fix is to upgrade from the v1beta1 API to v1 API , thus,

diff --git a/ch15/hello-kiamol/ingress/localhost.yaml b/ch15/hello-kiamol/ingress/localhost.yaml
index 83e95a1..d2f5732 100644
--- a/ch15/hello-kiamol/ingress/localhost.yaml
+++ b/ch15/hello-kiamol/ingress/localhost.yaml
@@ -1,4 +1,4 @@
-apiVersion: networking.k8s.io/v1beta1 
+apiVersion: networking.k8s.io/v1
 kind: Ingress
 metadata:
   name: hello-kiamol
@@ -8,7 +8,10 @@ spec:
   rules:
   - http:
       paths:
-      - path: /
-        backend:
-          serviceName: hello-kiamol
-          servicePort: 80
\ No newline at end of file
+        - pathType: Prefix
+          path: /
+          backend:
+            service:
+              name: hello-kiamol
+              port:
+                number: 80

The rest of the examples in the chapter which use "kind: ingress" also suffer from this.