Charts: coredns doesn't deploy if loadbalancer is metallb

[marklester]

BUG REPORT

Version of Helm and Kubernetes:
k8s: 1.14.1
helm: 2.13,1

Which chart:
stable/coredns

What happened:
try to deploy but failed with:

is invalid: spec.ports: Invalid value: []core.ServicePort{core.ServicePort{Name:"udp-53", Protocol:"UDP", Port:53, TargetPort:intstr.IntOrString{Type:0, IntVal:53, StrVal:""}, NodePort:0}, core.ServicePort{Name:"tcp-53", Protocol:"TCP", Port:53, TargetPort:intstr.IntOrString{Type:0, IntVal:53, StrVal:""}, NodePort:0}}: cannot create an external load balancer with mix protocols

How to reproduce it (as minimally and precisely as possible):
install coredns with value override of

serviceType: "LoadBalancer"
loadBalancerIP: "assignable ip"

Anything else we need to know:
k8s doesn't like service port on both tcp and udp for loadbalancer type services: https://metallb.universe.tf/usage/#ip-address-sharing

To resolve I believe 2 services need to be made one for udp and one for tcp
or wait til
https://github.com/kubernetes/kubernetes/issues/23880
is resolved

[dano0b]

workaround which work for me:

      servers:
        - zones:
            - zone: .
              scheme: dns://
              use_tcp: false

[rayterrill]

@dano0b's workaround worked for me as well. Thanks mate.

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