add support for using ansible 2.10.x for deploying kubespray (#7600)

* add support for using ansible 2.10.x for deploying kubespray

* move dns-autoscaler-clusterrole{binding}.yml to files/ folder

* note that ansible 2.10 is now experimentally supported

* coredns: move files to templates like before #4341

README.md

@@ -162,7 +162,7 @@ Note: Upstart/SysV init based OS types are not supported.
 ## Requirements
 
 - **Minimum required version of Kubernetes is v1.19**
-- **Ansible v2.9.x, Jinja 2.11+ and python-netaddr is installed on the machine that will run Ansible commands, Ansible 2.10.x is not supported for now**
+- **Ansible v2.9.x, Jinja 2.11+ and python-netaddr is installed on the machine that will run Ansible commands, Ansible 2.10.x is experimentally supported for now**
 - The target servers must have **access to the Internet** in order to pull docker images. Otherwise, additional configuration is required (See [Offline Environment](docs/offline-environment.md))
 - The target servers are configured to allow **IPv4 forwarding**.
 - If using IPv6 for pods and services, the target servers are configured to allow **IPv6 forwarding**.

ansible_version.yml

@@ -4,7 +4,7 @@
   become: no
   vars:
     minimal_ansible_version: 2.9.0
-    maximal_ansible_version: 2.10.0
+    maximal_ansible_version: 2.11.0
     ansible_connection: local
   tasks:
     - name: "Check {{ minimal_ansible_version }} <= Ansible version < {{ maximal_ansible_version }}"

roles/kubernetes-apps/ansible/tasks/coredns.yml

@@ -1,20 +1,19 @@
 ---
-- name: Kubernetes Apps | Lay Down CoreDNS Template
-  action: "{{ item.module }}"
-  args:
-    src: "{{ item.file }}{% if item.module == 'template' %}.j2{% endif %}"
+- name: Kubernetes Apps | Lay Down CoreDNS templates
+  template:
+    src: "{{ item.file }}.j2"
     dest: "{{ kube_config_dir }}/{{ item.file }}"
-  with_items:
-    - { name: coredns, module: template, file: coredns-config.yml, type: configmap }
-    - { name: coredns, module: copy, file: coredns-sa.yml, type: sa }
-    - { name: coredns, module: template, file: coredns-deployment.yml, type: deployment }
-    - { name: coredns, module: template, file: coredns-svc.yml, type: svc }
-    - { name: coredns, module: copy, file: coredns-clusterrole.yml, type: clusterrole }
-    - { name: coredns, module: copy, file: coredns-clusterrolebinding.yml, type: clusterrolebinding }
-    - { name: dns-autoscaler, module: copy, file: dns-autoscaler-sa.yml, type: sa }
-    - { name: dns-autoscaler, module: copy, file: dns-autoscaler-clusterrole.yml, type: clusterrole }
-    - { name: dns-autoscaler, module: copy, file: dns-autoscaler-clusterrolebinding.yml, type: clusterrolebinding }
-    - { name: dns-autoscaler, module: template, file: dns-autoscaler.yml, type: deployment }
+  loop:
+    - { name: coredns, file: coredns-clusterrole.yml, type: clusterrole }
+    - { name: coredns, file: coredns-clusterrolebinding.yml, type: clusterrolebinding }
+    - { name: coredns, file: coredns-config.yml, type: configmap }
+    - { name: coredns, file: coredns-deployment.yml, type: deployment }
+    - { name: coredns, file: coredns-sa.yml, type: sa }
+    - { name: coredns, file: coredns-svc.yml, type: svc }
+    - { name: dns-autoscaler, file: dns-autoscaler.yml, type: deployment }
+    - { name: dns-autoscaler, file: dns-autoscaler-clusterrole.yml, type: clusterrole }
+    - { name: dns-autoscaler, file: dns-autoscaler-clusterrolebinding.yml, type: clusterrolebinding }
+    - { name: dns-autoscaler, file: dns-autoscaler-sa.yml, type: sa }
   register: coredns_manifests
   vars:
     clusterIP: "{{ skydns_server }}"