support for kubernetes 1.16+

[Maannniii]

Type: Bug

Affected Versions

MySQL Operator Version: All (tested with 0.2.0)
Kubernetes version: 1.16+

Behaviour:

mysql-operator doesn't run as expected due to the usage of deprecated APIs.

Expectation:

Should support and run properly in Kubernetes 1.16 and above. But runs properly only till version 1.15

Steps to reproduce:

1. Install any version of Kubernetes 1.16 and above.
2. Try to install mysql-operator using helm.

Possible Reasons:

1. Deployment version has to be changed from apiVersion: apps/v1beta1 to apiVersion: apps/v1.
2. CustomResourceDefinition has to be upgraded from apiextensions.k8s.io/v1beta1 to apiextensions.k8s.io/v1 with necessary addition of required objects.

Reference: Kunernetes Deprecations and Removals.

Reason for not taking pull request:

Beginner in Kubernetes and not sure how to work with CustomResourceDefinition.

[haneka2019]

Hi, I use the following workaround and it works: sudo nano /etc/kubernetes/manifests/kube-apiserver.yaml ; Go to section spec: -> containers: -> - command: And add this: - --runtime-config=apps/v1beta1=true,extensions/v1beta1/deployments=true.

[Maannniii]

Hi, I use the following workaround and it works: sudo nano /etc/kubernetes/manifests/kube-apiserver.yaml ; Go to section spec: -> containers: -> - command: And add this: - --runtime-config=apps/v1beta1=true,extensions/v1beta1/deployments=true.

Thanks for your efforts. It is really appreciated.
However, I'm not sure whether this is applicable in cloud providers like AWS, GCP, DigitalOcean, AKS.

[mvukadinoff]

We're hitting this:

E0814 14:45:45.672805       1 reflector.go:205] github.com/oracle/mysql-operator/vendor/k8s.io/client-go/informers/factory.go:87: Failed to list *v1beta1.StatefulSet: the server could not find the requested resource

Also v1beta1.StatefulSet has been depricated in 1.16