Enable Calico KDD needed as an additional MKE3 migration prerequisite

[rleap-m]

Description

In order to upgrade/migrate from MKE3 --> MKE4, Calico KDD must be enabled. However, at present we do not identify this pre-req on the Migrate from MKE 3.x doc page, nor do we provide instructions as to how to enable KDD in MKE3

URL of the page

Migrate from MKE 3.x

What we have currently

n/a - missing content

Suggested Edit

Prerequisites

...

• Calico KDD (Kubernetes Datastore Driver) must be enabled (see Calico Docs for details on Calico KDD) prior to migrating from MKE3. To enable Calico KDD:

  1. Ensure MKE has been upgraded to 3.7.12 or later (option to enable Calico KDD was first exposed with this release)
  2. Obtain an MKE3 configuration file
  3. Set calico_kdd = true in the cluster_config section of the the MKE3 configuration file
  4. Upload the MKE3 configuration file to apply the configuration change

  Note: Converting the Calico datastore from etcd to KDD may take up to 30 minutes, depending on the size of the cluster. Upon successful completion, the following output will be displayed in the console:

  {"message":"Calico datastore migration from etcd to kdd successful"}
  ...

[rleap-m]

This ticket is a duplicate of #231. Just didn't want things to get mixed up - if the other is applied first than this can be closed out. FYI @moshiurH @MagdaDziadosz @KoryKessel-Mirantis

[KoryKessel-Mirantis]

Ah. So we have battling PRs! OK. This should be curious.