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+---
+draft: false
+title: Setup public Ingress Controller to private ARO cluster
+summary: On this exercise, we will deploy an additional Ingress Controller to make application ingress available to the internet.
+authors:
+    - Hevellyn
+date:
+  created: 2024-06-16
+  updated: 2024-06-16
+categories:
+  - Labs
+slug: public-ingresscontroller-aro-private
+tags:
+  - aro, azure, ingresscontroller, openshift
+---
+On this exercise, we will deploy an additional Ingress Controller to make application ingress available to the internet.
+<!-- more -->
+
+## Environment
+
+- Private ARO cluster (v4.12), with both `apiserver-visibility` and `ingress-visibility` set to **Private**.
+```
+az aro create --resource-group $RESOURCEGROUP --name $CLUSTER --vnet aro-vnet --master-subnet master-subnet --worker-subnet worker-subnet --apiserver-visibility Private --ingress-visibility Private --pull-secret @pull-secret.txt
+```
+
+- A "jumphost" VM  inside same cluster resource group.
+
+- A DNS domain with hosting.
+
+## Setup 
+
+### The jumphost
+1.  Create a virtual machine; Access the virtual machine via Azure Portal, using  the web feature **SSH using Azure CLI** which, quickly connect via the browser; Or any preferred method.
+```
+az vm create --resource-group $RESOURCEGROUP --zone 1 --name 'hevs-jumphost' --image 'RedHat:RHEL:8-lvm-gen2:latest' --admin-username 'azureuser' --generate-ssh-keys --size 'Standard_D2s_v3'
+``` 
+
+2. Once inside the vm, download the `oc` client and add to path; **oc** client mirror, to download, [here](https://mirror.openshift.com/pub/openshift-v4/clients/ocp/).
+```
+$ wget https://mirror.openshift.com/pub/openshift-v4/clients/ocp/<path>.tar.gz
+$ tar -xf <file>.tar.gz
+$ sudo cp oc /usr/bin/oc
+```
+
+3. From the Azure Portal, in the `Azure Red Hat OpenShift` service, select the cluster, and in **Connect** to get the **kubeadmin** and password, as well the Cluster API. Then from the vm:
+```
+$ oc login -u kubeadmin -p $PASSWORD --server $APIserverURL
+```
+
+### Creating the application
+- For `hostname`, use the domain that you want to be used by the application.
+```
+oc new-project demo-application
+oc new-app --docker-image=docker.io/openshift/hello-openshift
+oc expose svc hello-openshift --hostname example.hevshow.dns-dynamic.net
+```
+
+???+ note
+    Got a free DNS domain and hosting in [Cloudns.net](https://www.cloudns.net/) : `hevshow.dns-dynamic.net`
+
+### Creating the Ingress Controller
+
+Created a `Ingress Controller` named `public-ingress`, setting as the domain the same as what was my route, and added a `routerSelector` for my application, and the `loadBalancer.scope: External`
+```
+spec:
+  domain: example.hevshow.dns-dynamic.net
+  routeSelector:
+    matchLabels:
+      app: hello-openshift
+  endpointPublishingStrategy:
+    loadBalancer:
+      scope: External
+    type: LoadBalancerService
+```
+
+- Once the IC is created, pods and services in the project `openshift-ingress` will be created.
+```
+oc get svc,pod -n openshift-ingress
+
+NAME                                  READY   STATUS    RESTARTS   AGE
+pod/router-public-ingress-979d5c5bb-dpx59     1/1     Running   0          66m
+pod/router-public-ingress-979d5c5bb-vzjfg     1/1     Running   0          66m
+
+NAME                                        TYPE           CLUSTER-IP       EXTERNAL-IP       PORT(S)                      AGE
+service/router-public-ingress             LoadBalancer   172.30.35.87     108.141.255.176   80:32484/TCP,443:31682/TCP   66m
+service/router-internal-public-ingress    ClusterIP      172.30.131.160   <none>            80/TCP,443/TCP,1936/TCP      66m
+```
+
+???+ note
+    Take note of the `EXTERNAL-IP` for the SVC of Load Balancer type, and set as the IP for the A record in the DNS provider. `*.hevshow.dns-dynamic.net A 172.30.35.87`
+
+## Test the Application 🚀
+
+And voila, application is reachable for the internet!
+```
+$ curl example.hevshow.dns-dynamic.net  
+Hello OpenShift!
+```
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