https://www.cnblogs.com/keithtt/p/13204497.html
apiVersion: v1 kind: ConfigMap metadata: name: coredns namespace: kube-system data: Corefile: | .:53 { errors health ready kubernetes cluster.local in-addr.arpa ip6.arpa { pods verified fallthrough in-addr.arpa ip6.arpa ttl 30 } template IN ANY linuxnb.com { answer "{{ .Name }} 60 IN A 223.5.5.5" additional "{{ .Name }} 60 IN A 223.5.5.5" fallthrough } hosts { 192.168.1.122 demo1.xx.com 192.168.1.123 demo2.xx.com fallthrough } autopath @kubernetes prometheus :9153 forward . /etc/resolv.conf { prefer_udp policy sequential } cache 30 loop reload loadbalance }