What is the Maximum Nameservers on a PMK Node?

Problem

What is the maximum number of nameservers for a PMK Node?

Environment

Platform9 Managed Kubernetes - All Versions

Answer

Max nameservers for a PMK node is three, as implemented by upstream Kubernetes. If more than three nameservers are defined, only the first three will be utilized by Kubernetes. Nameservers are defined in _/etc/resolv.conf_.

If max nameservers is exceeded, kubectl get events -n kube-system will display warnings similar to the example below:

Example

Nameserver limits were exceeded, some nameservers have been omitted, the applied nameserver line is: 10.1.0.12 10.1.0.13 10.3.0.9.