backup, need to fill READMEs

Istio/istio-classic/traffic_management/03-HTTPRewrite/README.md

@@ -13,6 +13,8 @@ Through rewriting the URI we can point to the root directory from nginx.
         uri: "/"
 ```
 
+## The idea is that this rewrite is handled "internally" by Istio, not by the Client that started the request
+
 
 ## Practical usages:
 

Istio/istio-classic/traffic_management/04-HTTPRedirect/README.md

@@ -0,0 +1,61 @@
+
+
+# Continues from
+
+- 01-hello_world_1_service_1_deployment
+
+
+
+https://istio.io/latest/docs/reference/config/networking/virtual-service/#HTTPRedirect
+
+## The idea is that this rewrite is handled "externally" by the client, not by Istio.
+
+
+
+## Practical examples
+
+
+### HTTP to HTTPS redirect.
+
+The following Virtual Service configuration will redirect all the incoming traffic from the gateway `my-gateway` that uses the http protocol, to the https protocol.
+
+In this example, it would forward all the `http` traffic without taking into account which port is used. 
+
+```
+apiVersion: networking.istio.io/v1alpha3
+kind: VirtualService
+metadata:
+  name: to-https-vs
+spec:
+  hosts:
+    - "*"
+  gateways:
+    - my-gateway
+  http:
+  - match:
+    - name: to_https
+      match:
+        scheme: http
+      redirect:
+        scheme: https
+```
+
+### Migrated from a domain
+
+The following will update the requests coming "to" the domain `old.domain.com` and rewrite the URL to use the "new" `new.domain.com`
+
+```yaml
+apiVersion: networking.istio.io/v1alpha3
+kind: VirtualService
+metadata:
+  name: update-domain-vs
+spec:
+  hosts:
+    - "old.domain.com"
+  gateways:
+    - helloworld-gateway
+  http:
+    - name: forward-to-new-domain
+      redirect:
+        authority: "new.domain.com"
+```

Istio/istio-classic/traffic_management/04-HTTPRedirect/deployment.yaml

@@ -0,0 +1,40 @@
+# https://github.com/istio/istio/blob/master/samples/helloworld/helloworld.yaml
+apiVersion: v1
+kind: Service
+metadata:
+  name: helloworld
+  labels:
+    app: helloworld
+    service: helloworld
+spec:
+  ports:
+    - port: 80
+      name: http
+  selector:
+    app: helloworld
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: helloworld-nginx
+  labels:
+    app: helloworld
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      app: helloworld
+  template:
+    metadata:
+      labels:
+        app: helloworld
+    spec:
+      containers:
+        - name: helloworld
+          image: nginx
+          resources:
+            requests:
+              cpu: "100m"
+          imagePullPolicy: IfNotPresent #Always
+          ports:
+            - containerPort: 80

Istio/istio-classic/traffic_management/04-HTTPRedirect/gateway.yaml

@@ -0,0 +1,58 @@
+# https://github.com/istio/istio/blob/master/samples/helloworld/helloworld-gateway.yaml
+apiVersion: networking.istio.io/v1alpha3
+kind: Gateway
+metadata:
+  name: helloworld-gateway
+spec:
+  selector:
+    istio: ingressgateway # use istio default controller
+  servers:
+    - port:
+        number: 80
+        name: http
+        protocol: HTTP
+      hosts:
+        - "*"
+---
+apiVersion: networking.istio.io/v1alpha3
+kind: VirtualService
+metadata:
+  name: helloworld-vs
+spec:
+  hosts:
+    - "*"
+  gateways:
+    - helloworld-gateway
+  http:
+    - match:
+        - uri:
+            exact: /helloworld
+      route:
+        - destination:
+            host: helloworld.default.svc.cluster.local
+            port:
+              number: 80
+      rewrite:
+        uri: "/"
+    - name: to_https
+      match:
+        - uri:
+            exact: /https
+          scheme: http
+      redirect:
+        scheme: "https"
+    - name: wikipedia
+      match:
+        - uri:
+            exact: "/wiki"
+      redirect:
+        uri: "/"
+        scheme: "https"
+        authority: "en.wikipedia.org"
+    - name: wikipedia_search
+      match:
+        - uri:
+            prefix: "/wiki/"
+      redirect:
+        scheme: "https"
+        authority: "en.wikipedia.org"