Install will meet resource invalid problem when there are existed resources

[xxx7xxxx]

Backgroud

DeployXXX[1] will meet problems when update existed resources, it is a problem when use PUT method in kubernete APIs:

Error message example 1

customresourcedefinitions.apiextensions.k8s.io is invalid: metadata.resourceVersion: Invalid value: 0x0: must be specified for an update.

Error message example 2:

install mesh infrastructure error: invoke install func: deploy mesh control panel resource: deploy easemesh controlpanel inner service failed: Service "easemesh-controlplane-hs" is invalid: metadata.resourceVersion: Invalid value: "": must be specified for an update.

Same problems from the community:

• https://github.com/abonas/kubeclient/issues/403
• https://github.com/kubernetes/kubernetes/issues/70674
• https://www.timcosta.io/kubernetes-service-invalid-clusterip-or-resourceversion/

Proposal

1. Get the last resouceVersion to put in update spec, but it has a race condition.
2. Set annotation kubectl.kubernetes.io/last-applied-configuration then update (kubectl way).

3. Delete existed one and PUT brand new resource.

   Method 3 seems to be the best choice: simple and clean, won't change along with kubernetes implicit stuff. We could add a flag --replace to do it, by default we will output errors when there are existed resources.

Reference

[1] https://github.com/megaease/easemesh/blob/main/emctl/cmd/client/command/meshinstall/base/k8sutils.go

[zhao-kun]

I prefer to choosing solution No.2. The consequence of solution No.3 is equal to emctl reset and emctl install