Several hostnames and targets

[guillomep]

Hello,

We are currently operating blue/green deployment for our clusters and we have a problem with external-dns.
We have creating several hostnames to create blue/green deployment for example we have:

• grafana.example.com pointing to loadbalancer.ourcluster.example.com
• grafana.green.ourcluster.example.com pointing to CNAME of the AWS LB for green cluster
• grafana.blue.ourcluster.example.com pointing to CNAME of the AWS LB for blue cluster
• loadbalancer.ourcluster.example.com, which is a weighted record that point to loadbalancer.blue.ourcluster.example.com or loadbalancer.green.ourcluster.example.com

We would like to create with external-dns the two first records when deploying grafana chart but I was not able to do so with the following annotations:

external-dns.alpha.kubernetes.io/hostname: "grafana.green.ourcluster.example.com,grafana.example.com"

The problem with that is that the two records point to the CNAME of AWS LB, which is not the right thing for grafana.example.com

or

external-dns.alpha.kubernetes.io/hostname: "grafana.green.ourcluster.example.com,grafana.example.com"
external-dns.alpha.kubernetes.io/target: "loadbalancer.ourcluster.example.com"

But in this case it is not the right record for grafana.green.ourcluster.example.com

Is it possible to handle that with external-dns has the grafana chart doesn't handle creation of multiple ingresses.

I also look at internal-hostname but it looks like it only for service and will not work in our case.