Merge pull request kubernetes-sigs#537 from KohlsTechnology/docs-0.21.0

Update Docs and Manifests for v0.21.0

README.md

@@ -91,12 +91,12 @@ See the [resources | Kustomize](https://kubectl.docs.kubernetes.io/references/ku
 
 Run As A Job
 ```
-kustomize build 'github.com/kubernetes-sigs/descheduler/kubernetes/job?ref=v0.20.0' | kubectl apply -f -
+kustomize build 'github.com/kubernetes-sigs/descheduler/kubernetes/job?ref=v0.21.0' | kubectl apply -f -
 ```
 
 Run As A CronJob
 ```
-kustomize build 'github.com/kubernetes-sigs/descheduler/kubernetes/cronjob?ref=v0.20.0' | kubectl apply -f -
+kustomize build 'github.com/kubernetes-sigs/descheduler/kubernetes/cronjob?ref=v0.21.0' | kubectl apply -f -
 ```
 
 ## User Guide
@@ -521,7 +521,7 @@ does not exist, descheduler won't create it and will throw an error.
 
 ### Label filtering
 
-The following strategies can configure a [standard kubernetes labelSelector](https://kubernetes.io/docs/reference/generated/kubernetes-api/v1.20/#labelselector-v1-meta)
+The following strategies can configure a [standard kubernetes labelSelector](https://kubernetes.io/docs/reference/generated/kubernetes-api/v1.21/#labelselector-v1-meta)
 to filter pods by their labels:
 
 * `PodLifeTime`
@@ -595,6 +595,7 @@ packages that it is compiled with.
 
 Descheduler  | Supported Kubernetes Version
 -------------|-----------------------------
+v0.21        | v1.21
 v0.20        | v1.20
 v0.19        | v1.19
 v0.18        | v1.18

docs/user-guide.md

@@ -1,11 +1,17 @@
 # User Guide
 
 Starting with descheduler release v0.10.0 container images are available in the official k8s container registry.
-* `k8s.gcr.io/descheduler/descheduler`
 
-Also, starting with descheduler release v0.20.0 multi-arch container images are provided. Currently AMD64 and ARM64
-container images are provided. Multi-arch container images cannot be pulled by [kind](https://kind.sigs.k8s.io) from
-a registry. Therefore starting with descheduler release v0.20.0 use the below process to download the official descheduler
+Descheduler Version | Container Image                                     | Architectures           |
+------------------- |-----------------------------------------------------|-------------------------|
+v0.21.0             | k8s.gcr.io/descheduler/descheduler:v0.21.0          | AMD64<br>ARM64<br>ARMv7 |
+v0.20.0             | k8s.gcr.io/descheduler/descheduler:v0.20.0          | AMD64<br>ARM64          |
+v0.19.0             | k8s.gcr.io/descheduler/descheduler:v0.19.0          | AMD64                   |
+v0.18.0             | k8s.gcr.io/descheduler/descheduler:v0.18.0          | AMD64                   |
+v0.10.0             | k8s.gcr.io/descheduler/descheduler:v0.10.0          | AMD64                   |
+
+Note that multi-arch container images cannot be pulled by [kind](https://kind.sigs.k8s.io) from a registry. Therefore
+starting with descheduler release v0.20.0 use the below process to download the official descheduler
 image into a kind cluster.
 ```
 kind create cluster

kubernetes/cronjob/cronjob.yaml

@@ -16,7 +16,7 @@ spec:
           priorityClassName: system-cluster-critical
           containers:
           - name: descheduler
-            image: k8s.gcr.io/descheduler/descheduler:v0.20.0
+            image: k8s.gcr.io/descheduler/descheduler:v0.21.0
             volumeMounts:
             - mountPath: /policy-dir
               name: policy-volume

kubernetes/job/job.yaml

@@ -14,7 +14,7 @@ spec:
       priorityClassName: system-cluster-critical
       containers:
         - name: descheduler
-          image: k8s.gcr.io/descheduler/descheduler:v0.20.0
+          image: k8s.gcr.io/descheduler/descheduler:v0.21.0
           volumeMounts:
           - mountPath: /policy-dir
             name: policy-volume