Question

Cannot access Kubernetes Cluster after deleting Load Balancer having custom Ingress

Posted April 22, 2021 267 views
KubernetesDigitalOcean Managed Kubernetes

I’ve recently created a managed Kubernetes cluster, deployed several services with a custom ingress, and I could access correctly the app at the IP provided by the ingress service.

Then I found out a load balancer was created automatically by DigitalOcean, and thinking I already had the ingress I didn’t need it so I deleted it. Now the app is no longer accessible.

I don’t really understand the connection between the cluster and the load balancer.

  • Should a managed cluster always have a DigitalOcean load balancer?
  • I see the cost of a managed cluster starts at 10/month. Is the cost of the load balancer included?

Thanks in advance.

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1 answer

Hi there,

As the load balancer is a separate resource, it is billed separately.

In case that you have a Kubernetes service created with type LoadBalancer, for example:

spec:
  type: LoadBalancer
  selector:
    app: nginx-example
  ports:
    - name: http
      protocol: TCP
      port: 80
      targetPort: 80

Once you apply this to your cluster, this will automatically spin up a Managed DigitalOcean Load Balancer under your account.

For more information, I could suggest taking a look at the first answer here:

https://www.digitalocean.com/community/questions/how-does-one-point-a-domain-to-a-kubernetes-cluster

Regards,
Bobby

  • Thanks Bobby,

    I understand what happened now. However, I’m not entirely sure why this extra load balancer is needed if the ingress provides an external IP, which I though was the same as the droplet one.

    • Hi there,

      I believe that if you were running an unmanaged Kubernetes cluster this would be the case. However with a managed cluster, if the Service is of type LoadBalancer, the cluster will automatically create a DigitalOcean Load Balancer, through which all external traffic will flow to the Controller.

      Regards,
      Bobby