Merge pull request #1609 from consideRatio/pr/k8s1.21

breaking: require k8s 1.21 like z2jh does now

Author: manics

.github/workflows/test.yml

@@ -68,7 +68,7 @@ jobs:
           # which isn't documented anywhere, but is currently at 3.5.0. We also
           # test with the latest k8s and helm versions.
           #
-          - k3s-channel: v1.20
+          - k3s-channel: v1.21
             helm-version: v3.5.0
             test: helm
             test-variation: dind

helm-chart/binderhub/Chart.yaml

@@ -22,7 +22,7 @@ keywords: [jupyter, jupyterhub, binderhub]
 home: https://binderhub.readthedocs.io/en/latest/
 sources: [https://github.com/jupyterhub/binderhub]
 icon: https://jupyterhub.github.io/helm-chart/images/hublogo.svg
-kubeVersion: ">=1.20.0-0"
+kubeVersion: ">=1.21.0-0"
 maintainers:
   # Since it is a requirement of Artifact Hub to have specific maintainers
   # listed, we have added some below, but in practice the entire JupyterHub team

helm-chart/binderhub/schema.yaml

@@ -79,7 +79,7 @@ properties:
     additionalProperties: true
     description: |
       A k8s native specification of resources, see [the
-      documentation](https://kubernetes.io/docs/reference/generated/kubernetes-api/v1.20/#resourcerequirements-v1-core).
+      documentation](https://kubernetes.io/docs/reference/generated/kubernetes-api/v1.26/#resourcerequirements-v1-core).
 
   rbac:
     type: object
@@ -343,7 +343,7 @@ properties:
           flag.
 
           See [the k8s
-          documentation](https://kubernetes.io/docs/reference/generated/kubernetes-api/v1.20/#probe-v1-core)
+          documentation](https://kubernetes.io/docs/reference/generated/kubernetes-api/v1.26/#probe-v1-core)
           for more details.
         required: [enabled]
         properties:
@@ -397,7 +397,7 @@ properties:
             additionalProperties: false
             description: |
               A k8s native specification of lifecycle hooks on the container, see [the
-              documentation](https://kubernetes.io/docs/reference/generated/kubernetes-api/v1.20/#lifecycle-v1-core).
+              documentation](https://kubernetes.io/docs/reference/generated/kubernetes-api/v1.26/#lifecycle-v1-core).
             properties:
               postStart:
                 type: object