Added helm docks to akami-edgedns

docs/tutorials/akamai-edgedns.md

@@ -34,7 +34,48 @@ In addition to specifying auth credentials individually, an Akamai Edgegrid .edg
 
 An operational External-DNS deployment consists of an External-DNS container and service. The following sections demonstrate the ConfigMap objects that would make up an example functional external DNS kubernetes configuration utilizing NGINX as the service.
 
-Connect your `kubectl` client to the External-DNS cluster, and then apply one of the following manifest files:
+Connect your `kubectl` client to the External-DNS cluster.
+
+Begin by creating a Kubernetes secret to securely store your  Akamai Edge DNS Access Tokens. This key will enable ExternalDNS to authenticate with Akamai Edge DNS:
+```shell
+kubectl create secret generic external-dns --from-literal=EXTERNAL_DNS_AKAMAI_SERVICECONSUMERDOMAIN=YOUR_SERVICECONSUMERDOMAIN --from-literal=EXTERNAL_DNS_AKAMAI_CLIENT_TOKEN=YOUR_CLIENT_TOKEN --from-literal=EXTERNAL_DNS_AKAMAI_CLIENT_SECRET=YOUR_CLIENT_SECRET --from-literal=EXTERNAL_DNS_AKAMAI_ACCESS_TOKEN=YOUR_ACCESS_TOKEN
+```
+Ensure to replace YOUR_SERVICECONSUMERDOMAIN, EXTERNAL_DNS_AKAMAI_CLIENT_TOKEN, YOUR_CLIENT_SECRET and YOUR_ACCESS_TOKEN with your actual Akamai Edge DNS API keys.
+
+Then apply one of the following manifests file to deploy ExternalDNS.
+
+### Using Helm
+
+Create a values.yaml file to configure ExternalDNS to use Akamai Edge DNS as the DNS provider. This file should include the necessary environment variables:
+```shell
+provider:
+  name: akamai
+env:
+  - name: EXTERNAL_DNS_AKAMAI_SERVICECONSUMERDOMAIN
+    valueFrom:
+      secretKeyRef:
+        name: external-dns
+        key: EXTERNAL_DNS_AKAMAI_SERVICECONSUMERDOMAIN
+  - name: EXTERNAL_DNS_AKAMAI_CLIENT_TOKEN
+    valueFrom:
+      secretKeyRef:
+        name: external-dns
+        key: EXTERNAL_DNS_AKAMAI_CLIENT_TOKEN
+  - name: EXTERNAL_DNS_AKAMAI_CLIENT_SECRET
+    valueFrom:
+      secretKeyRef:
+        name: external-dns
+        key: EXTERNAL_DNS_AKAMAI_CLIENT_SECRET
+  - name: EXTERNAL_DNS_AKAMAI_ACCESS_TOKEN
+    valueFrom:
+      secretKeyRef:
+        name: external-dns
+        key: EXTERNAL_DNS_AKAMAI_ACCESS_TOKEN
+```
+Finally, install the ExternalDNS chart with Helm using the configuration specified in your values.yaml file:
+```shell
+helm upgrade --install external-dns external-dns/external-dns --version 1.14.4 --values values.yaml
+```
 
 ### Manifest (for clusters without RBAC enabled)