Set Kubernetes default version to 1.20.4

Dockerfile

@@ -1,7 +1,7 @@
 # Use imutable image tags rather than mutable tags (like ubuntu:18.04)
 FROM ubuntu:bionic-20200807
 
-ENV KUBE_VERSION=v1.20.2
+ENV KUBE_VERSION=v1.20.4
 
 RUN mkdir /kubespray
 WORKDIR /kubespray

README.md

@@ -128,7 +128,7 @@ Note: Upstart/SysV init based OS types are not supported.
 ## Supported Components
 
 - Core
-  - [kubernetes](https://github.com/kubernetes/kubernetes) v1.20.2
+  - [kubernetes](https://github.com/kubernetes/kubernetes) v1.20.4
   - [etcd](https://github.com/coreos/etcd) v3.4.13
   - [docker](https://www.docker.com/) v19.03 (see note)
   - [containerd](https://containerd.io/) v1.3.9

inventory/sample/group_vars/k8s-cluster/k8s-cluster.yml

@@ -17,7 +17,7 @@ kube_token_dir: "{{ kube_config_dir }}/tokens"
 kube_api_anonymous_auth: true
 
 ## Change this to use another Kubernetes version, e.g. a current beta release
-kube_version: v1.20.2
+kube_version: v1.20.4
 
 # Where the binaries will be downloaded.
 # Note: ensure that you've enough disk space (about 1G)

roles/kubespray-defaults/defaults/main.yaml

@@ -15,7 +15,7 @@ is_fedora_coreos: false
 disable_swap: true
 
 ## Change this to use another Kubernetes version, e.g. a current beta release
-kube_version: v1.20.2
+kube_version: v1.20.4
 
 ## The minimum version working
 kube_version_min_required: v1.18.0