CODEWITHSUNDEEP
kuberneteskops
Ojas Kale
Ojas Kale

Reputation: 2159

kops kubernetes cluster with multiple DNS

There are two parts to this.

  1. I am using kops v1.17.0 to standup kubernetes cluster on ec2 instances. I am followinf these docs for doing so. https://kubernetes.io/docs/setup/production-environment/tools/kops/

on of the points go as follows.

kops has a strong opinion on the cluster name: it should be a valid DNS name.

this got me confused. Can my cluster serve requests to only one DNS and its subdomains?

  1. I tried this on a domain example.com I created a hosted zone for it. created a cluster named example.com.k8s.local.

I pointed this domain to my clusters load balancer. and I can access example.com. All good till now.

now, I want one of the services in my cluster to be served on abc.com. I created another hosted zone, and a new record set within it which points to this load balancer. I am expecting to visit abc.com and see this service but all I see is nginx 404 not found

Is this happening because of the first point I mentioned or totally separate issue? If it is because of 1st point is there aa way around or one cluster is always tied to one domain in the kops world?

Upvotes: 0

Views: 279

Answers (1)

Ojas Kale
Ojas Kale

Reputation: 2159

As far as the first part is concerned, Yes I can serve multiple domains from same kubernetes cluster with this setup. upto certain version there was a hard requirement of matching domain name with cluster name, its not the case anymore.

Couple of things you need to consider. while issuing a certificate from ACM, make sure all your domains are listed

example

example.com
*example.com
bar.com
*.bar.com

make sure that all of the domains are validated and are not in pending or any other state.

I think reason for second issue was one of the domains in my certificate generated by ACM was invalid state and thus in pending state.

@jt97 ^^

Upvotes: 1

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