Add-on dns

Compatibility:
Source: CoreDNS

This deploys CoreDNS to supply address resolution services to
Kubernetes.

This service is commonly required by other addons, so it is
recommended that you enable it.

microk8s enable dns

By default it forwards requests to the system-defined servers in /etc/resolv.conf for resolving
addresses. This can be changed when you enable the addon, for example:

microk8s enable dns:1.1.1.1

(for multiple DNS addresses, a comma-separated list should be used)

The forward dns servers can also be altered after enabling the addon
by running the command:

microk8s kubectl -n kube-system edit configmap/coredns

This will invoke the vim editor so that you can alter the configuration.

Note: You can set a different default editor by setting the KUBE_EDITOR environment variable. E.g. export KUBE_EDITOR="/usr/bin/nano"

The addon can be disabled at any time:

microk8s disable dns

…but bear in mind this could have implications for services and pods which
may be relying on it.