deploy-using-helm

Setup in ingress with Nginx ingress controller

Nginx ingress is one of the common way to access a containerized service.

References:

Configuring Nginx ingress

References:

https://kubernetes.io/docs/tasks/access-application-cluster/ingress-minikube/

If you are using minikube, confirm that ingress addon is enabled
```
 minikube addons enable ingress
```
Create a namespace to run the deployments
```
 kubectl create namespace ingress
```

Deploy the app in the namespace.

 helm install tr-webapp ./tr-webapp --namespace ingress

Create a file (ingress.yaml) to apply ingress:

 apiVersion: networking.k8s.io/v1
 kind: Ingress
 metadata:
 name: ingress
 annotations:
     nginx.ingress.kubernetes.io/rewrite-target: /$1
 spec:
 rules:
     - host: hello-world.ingress
     http:
         paths:
         - path: /
             pathType: Prefix
             backend:
             service:
                 name: tr-webapp
                 port:
                 number: 8080

Apply the new settings

 kubectl apply -f ingress.yaml --namespace ingress

Check service and ingress resources

 [roberto@vmlab01 ingress]$ kubectl get svc --namespace ingress
 NAME        TYPE       CLUSTER-IP      EXTERNAL-IP   PORT(S)          AGE
 tr-webapp   NodePort   10.100.96.113   <none>        8080:31682/TCP   6m52s

 [roberto@vmlab01 ingress]$ kubectl get ingress --namespace ingress
 NAME      CLASS    HOSTS                 ADDRESS        PORTS   AGE
 ingress   <none>   hello-world.ingress   192.168.49.2   80      4m4s

(you should wait a few seconds until “ADDRESS” list an IP address for the ingress resource)

Create a static entry in /etc/hosts to point to the new hostname hello-world.ingress
```
 sudo echo "192.168.49.2 hello-world.ingress" >> /etc/hosts
```

Now you should be able to access the url:

 [roberto@vmlab01 ingress]$ curl hello-world.ingress
 Hello World