examples: updated to latest api

examples/cdn/README.md

@@ -3,6 +3,10 @@
 
 This example demonstrates the isolation of traffic between pods using custom networks with L2S-M. In this scenario, two networks, v-network-1 and v-network-2, are created, and three pods (cdn-server, router, and content-server) are connected. The objective is to showcase how traffic can be isolated through a router connecting the two networks.
 
+## Pre-requisites
+
+In order to get this example moving, it's required to have L2S-M installed alongside an overlay topology deployed. You can learn how to do so in [the overlay example section](../overlay-setup).
+
 ## Topology
 This example can be seen in action [in the screencast provided](#procedure), where it's presented a Cluster scenario with three nodes, where a Pod will be deployed in each Node, as shown in the following figure:
 
@@ -10,6 +14,7 @@ This example can be seen in action [in the screencast provided](#procedure), whe
   <img src="../../assets/video-server-example.svg" width="400">
 </p>
 
+
 The following example doesn't really need a three Node scenario, it can be used with just a Node in the Cluster. Through the example guide, we will create the following resources:
 
 ### Networks
@@ -39,6 +44,8 @@ Note: The configurations specified can be seen in each Pod YAML specification.
   - IP: 10.0.2.2
   - Network: v-network-2
 
+
+It's required to specify which node you want to schedule your pod in, in order to do so, change the "NodeName" field inside the yaml files.
 ## Procedure
 
 Follow the steps below to demonstrate the isolation of traffic between pods using custom networks with L2S-M. You can watch a screencast of how this operates and how it should follow through this youtube video: 

examples/cdn/cdn-server.yaml

@@ -4,6 +4,7 @@ metadata:
   name: cdn-server
   labels:
     app: test4
+    l2sm: "true"
   annotations:
     l2sm/networks: '[{"name": "v-network-1", "ips":["10.0.1.2/24"]}]'
 spec:
@@ -14,4 +15,4 @@ spec:
     securityContext:
       capabilities:
         add: ["NET_ADMIN"]
-  #nodeName: test-l2sm-uc3m-polito-1
+  nodeName: test-l2sm-uc3m-polito-1

examples/cdn/content-server.yaml

@@ -22,4 +22,4 @@ spec:
           securityContext:
             capabilities:
               add: ["NET_ADMIN"]
-    #nodeName: test-l2sm-uc3m-polito-3
\ No newline at end of file
+    nodeName: test-l2sm-uc3m-polito-3
\ No newline at end of file

examples/cdn/router.yaml

@@ -4,6 +4,7 @@ metadata:
   name: router
   labels:
     app: test4
+    l2sm: "true"
   annotations:
     l2sm/networks: '[{"name": "v-network-1","ips": ["10.0.1.1/24"]}, {"name": "v-network-2","ips": ["10.0.2.1/24"]}]'
 spec:
@@ -17,5 +18,5 @@ spec:
       privileged: true
       capabilities:
         add: ["NET_ADMIN"]
-  #nodeName: test-l2sm-uc3m-polito-2
+  nodeName: test-l2sm-uc3m-polito-2