Gardener: ☂️-Issue for "Support for Kubernetes v1.20”

Created on 2 Dec 2020 · 3Comments · Source: gardener/gardener

/area open-source
/kind enhancement
/priority normal
/topology garden seed shoot

Kubernetes v1.20 will be released soon, find the changelog here: https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG/CHANGELOG-1.20.md

Work has been started and is pushed to the kubernetes-v1.20 branch. There should be similar branches in the provider extension repositories in case the work has been started already.

Identified TODOs so far:

| | Status |
| --- | --- |
| ✅| completed |
| ☑️ | partly completed |
| 🚧| in progress |
| ❔| to be clarified |
| ℹ️| interesting, but not relevant (yet) |
| ⏸| won't fix |
| 🚩|postponed|
| ❌| incomplete |

gardener/gardener ➡️ #3296

✅ Allow instantiating v1.20 Kubernetes clients
✅ Add v1.20 to supported Kubernetes versions in the documentation
✅ Build new gardener/hyperkube images for v1.20
✅ Check whether the CRDs have preserveUnknownFields=false if possible, see https://github.com/kubernetes/kubernetes/pull/93078
✅ Adapt egress selector configuration for KonnectivityTunnel feature gate, see https://github.com/kubernetes/kubernetes/pull/95235
ℹ️ Disable watch caches for events, see https://github.com/kubernetes/kubernetes/pull/96052
✅ Replace node-role.kubernetes.io/master with node-role.kubernetes.io/control-plane, see https://github.com/kubernetes/kubernetes/pull/95382
ℹ️ Replace failure-domain.beta.kubernetes.io/{zone,region} with topology.kubernetes.io/{zone,region}, see https://github.com/kubernetes/kubernetes/pull/96033
✅ kube-controller-manager uses Lease for its leader election

gardener/gardener-extension-provider-alicloud ➡️ #204

✅ Revendor gardener/gardener to allow instantiation of 1.20 Kubernetes client

gardener/gardener-extension-provider-aws ➡️ #237

✅ Revendor gardener/gardener to allow instantiation of 1.20 Kubernetes client
✅ Revendor gardener/cloud-provider-aws with v1.20.0 sources

gardener/gardener-extension-provider-azure ➡️ #228

✅ Revendor gardener/gardener to allow instantiation of 1.20 Kubernetes client
✅ Revendor gardener/cloud-provider-azure with v1.20.0 sources
ℹ️ Azure blob disk feature (kind: Shared/Dedicated) has been deprecated, see https://github.com/kubernetes/kubernetes/pull/92905
✅ Postpone Azure CSI migration to 1.21, see https://github.com/gardener/gardener-extension-provider-azure/issues/3 (Result: https://github.com/gardener/gardener-extension-provider-azure/pull/215)

gardener/gardener-extension-provider-gcp ➡️ #219

✅ Revendor gardener/gardener to allow instantiation of 1.20 Kubernetes client
✅ Revendor gardener/cloud-provider-gcp with v1.20.0 sources

gardener/gardener-extension-provider-openstack ➡️ #192

✅ Revendor gardener/gardener to allow instantiation of 1.20 Kubernetes client
🚩 Use latest version of OpenStack cloud-controller-manager (postponed until v1.20 version gets released; in the meantime we continue to use the current versions until https://github.com/gardener/gardener-extension-provider-openstack/issues/148 is tackled)

gardener/gardener-extension-provider-packet ➡️ #96

✅ Revendor gardener/gardener to allow instantiation of 1.20 Kubernetes client

gardener/gardener-extension-provider-vsphere ➡️ #118

✅ Revendor gardener/gardener to allow instantiation of 1.20 Kubernetes client

areopen-source kinenhancement prioritnormal topologgarden topologseed topologshoot

Source

rfranzke

🚀3

Most helpful comment

/cc @dguendisch @schrodit FYI :) Please prepare the execution and publishing of the conformance tests for 1.20

rfranzke on 17 Dec 2020

👍2

All 3 comments

Disable watch caches for events, see kubernetes/kubernetes#96052

As investigated, watch cache for events.v1 was already disabled and every new release from >= 1.17 will disable the cache also for events.events.k8s.io. I don't see an action item from our side, i.e. let's move it to ℹ️?