Go build fails on k8s apimachinery, as alpha functionality was deprecated

[MatsNl]

Hi,

I'm trying to build your project from source for an ARM device. Mostly successful, but the go build of the initializer fails with the following messages:

tproxy-initializer/main.go:100:11: options.IncludeUninitialized undefined (type "k8s.io/apimachinery/pkg/apis/meta/v1".ListOptions has no field or method IncludeUninitialized)
tproxy-initializer/main.go:104:11: options.IncludeUninitialized undefined (type "k8s.io/apimachinery/pkg/apis/meta/v1".ListOptions has no field or method IncludeUninitialized)
tproxy-initializer/main.go:134:26: deployment.ObjectMeta.GetInitializers undefined (type "k8s.io/apimachinery/pkg/apis/meta/v1".ObjectMeta has no field or method GetInitializers)
tproxy-initializer/main.go:135:47: deployment.ObjectMeta.GetInitializers undefined (type "k8s.io/apimachinery/pkg/apis/meta/v1".ObjectMeta has no field or method GetInitializers)
tproxy-initializer/main.go:140:33: "k8s.io/apimachinery/pkg/runtime".NewScheme().DeepCopy undefined (type *"k8s.io/apimachinery/pkg/runtime".Scheme has no field or method DeepCopy)

It appears this functionality has been removed in k8s 1.14: https://discuss.kubernetes.io/t/kubernetes-initializer-includeuninitialized/5211
Therefore I think forcing a lower version would not be appropriate here, like is done in this solution: kuberhealthy/kuberhealthy#118
Any suggestions?
Thanks

[ScottGuymer]

I have run into the same issue here.

I think that the solution is to update to use a MutatingAdmissionWebhook.

Im not sure how much of the initializer code should "just work" with a webhook. It might be that no changes are needed but i havent looked that deep yet.

[ScottGuymer]

Some links for references

https://kubernetes.io/docs/reference/generated/kubernetes-api/v1.14/#mutatingwebhookconfiguration-v1beta1-admissionregistration-k8s-io

https://kubernetes.io/docs/reference/access-authn-authz/extensible-admission-controllers/

Some issues i have run into with this in the past
https://www.scottguymer.co.uk/post/kubernetes-mutating-webhook-configuration/