CODEWITHSUNDEEP
google-compute-enginegoogle-cloud-platformkubernetes
Azr
Azr

Reputation: 1143

Name kubernete generated Google cloud ingress load balancer

I have multiple kubernetes clusters that have Google powered load balancers (ingress lbs).

So right now to access my k8s cluster service (s) I just have to ping the public IP given by the $ kubectl get service, cool.

My problem is that sometimes I need to tear down/create clusters, reconfigure services, those services might also need SSL certificates very soon, and my clusters'/services' builds needs to be easily reproducible too (for cloud devs!).

The question is simple: can I instead of having an ingress load balancer IP have an ingress load balancer hostname?

Something like ${LOAD_BALANCER_NAME}.${GOOGLE_PROJECT_NAME}.appspot.com would be uber awesome.

Upvotes: 0

Views: 356

Answers (1)

Prashanth B
Prashanth B

Reputation: 5113

Kubernetes integration with google cloud DNS is a feature request for which there is no immediate timeline (it will happen, I cannot comment on when). You can however create DNS records with the static ip of a loadbalancer.

If I've understood your problem correctly, you're using an L4 loadbalancer (service.Type=LoadBalancer) and you want to be able to delete the service/nodes etc and continue using the same IP (because you have DNS records for it). In other words, you want a loadbalancer not tied to the service lifecycle. This is possible through an L7 loadbalancer [1] & [2], or by recreating the service with an existing IP [3].

Note that [1] divorces the loadbalancer from service lifetime, but if you take down your entire cluster you will lose the loadbalancer. [2] is tied to the Ingress resource, so if you delete your cluster and recreate it, start the loadbalancer controller pod, and recreate the same Ingress resource, it will use the existing loadbalancer. Also note that both [1] and [2] depend on a "beta" resource that will be released with kubernetes 1.1, I'd appreciate your feedback if you deploy them :)

[1] https://github.com/kubernetes/contrib/tree/master/service-loadbalancer

[2] https://github.com/kubernetes/contrib/pull/132

[3] github.com/kubernetes/kubernetes/issues/10323

Upvotes: 1

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