gcloud deployment: unable to change dnsconfig (DNSConfig: custom pod DNS is disabled by feature gate)
I´m trying to set an additional nameserver for a deployment on gcloud Kubernetes like this:
dnsConfig:
nameservers:
- 172.16.248.32
searches:
- ns1.svc.cluster.local
- mynetwork.local
options:
- name: ndots
value: "2"
- name: edns0This fails with the following error:
spec.template.spec.dnsConfig: Forbidden: DNSConfig: custom pod DNS is disabled by feature gate
How can I fix this?
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2 Answers
Answering own question:
Update to 1.10.9-gke.0 fixed this issue.
Afterwards I spun up an DNS Machine in the cluster with bind9 in order to be able to route cluster.local hostnames inside the cluster and mycompany.local to the company dns.
Just a bit of background on why:
spec.template.spec.dnsConfig: Forbidden: DNSConfig: custom pod DNS is disabled by feature gate
Starting with Kubernetes 1.10 the CustomPodDNS feature became beta and enabled by default. You would have had to add --feature-gates=CustomPodDNS=true to the kube-apiserver and kubelets for this to work on Kubernetes 1.9 and earlier:
