Ensure addon-resizer 1.8.11 only effective at arch amd64. (kubernetes…

…-sigs#8144)

* Ensure addon-resizer 1.8.11 only effective at arch amd64.

k8s.gcr.io/addon-resizer:1.8.11 returns the amd64 image which is not executable at arm64.

Disable addon-resizer when the platform is not amd64.

When metrics-server upgrade and use addon-resizer:2.3, then revert this
commit and `image_arch` will determine the `addon_resizer_image_tag`.

* Add metrics_server_resizer architectures check

roles/kubernetes-apps/metrics_server/defaults/main.yml

@@ -1,4 +1,5 @@
 ---
+# metrics_server_resizer only effective in arch amd64
 metrics_server_resizer: false
 metrics_server_kubelet_insecure_tls: true
 metrics_server_kubelet_preferred_address_types: "InternalIP"

roles/kubernetes-apps/metrics_server/tasks/main.yml

@@ -4,6 +4,12 @@
   set_fact:
     masters_are_not_tainted: "{{ groups['kube_node'] | intersect(groups['kube_control_plane']) == groups['kube_control_plane'] }}"
 
+- name: check host_architecture is amd64 for metrics_server_resizer
+  assert:
+    that: host_architecture == "amd64"
+    msg: "metrics_server_resizer is not available on other architectures than amd64"
+  when: metrics_server_resizer
+
 - name: Metrics Server | Delete addon dir
   file:
     path: "{{ kube_config_dir }}/addons/metrics_server"