use rsync instead of command

roles/kubernetes/master/tasks/main.yml

@@ -7,12 +7,14 @@
     src: kubectl_bash_completion.sh
     dest: /etc/bash_completion.d/kubectl.sh
 
-- name: Install kubernetes binaries
-  command: cp -pf "{{ local_release_dir }}/kubernetes/bin/{{ item }}" "{{ bin_dir }}/{{ item }}"
+- name: Copy kube-apiserver binary
+  command: rsync -piu "{{ local_release_dir }}/kubernetes/bin/kube-apiserver" "{{ bin_dir }}/kube-apiserver"
+  register: kube_apiserver_copy
+  changed_when: false
+
+- name: Copy kubectl binary
+  command: rsync -piu "{{ local_release_dir }}/kubernetes/bin/kubectl" "{{ bin_dir }}/kubectl"
   changed_when: false
-  with_items:
-    - kubectl
-    - kube-apiserver
 
 - name: populate users for basic auth in API
   lineinfile:
@@ -55,7 +57,11 @@
     mode: 755
     backup: yes
   when: init_system == "sysvinit" and ansible_os_family == "Debian"
+
+- name: Restart apiserver
+  command: /bin/true
   notify: restart kube-apiserver
+  changed_when: is_gentoken_calico|default(false) or kube_apiserver_copy.stdout_lines
 
 - name: Allow apiserver to bind on both secure and insecure ports
   shell: setcap cap_net_bind_service+ep {{ bin_dir }}/kube-apiserver

roles/kubernetes/node/tasks/install.yml

@@ -15,16 +15,15 @@
   notify: restart kubelet
 
 - name: install | Install kubelet binary
-  command: cp -pf "{{ local_release_dir }}/kubernetes/bin/kubelet" "{{ bin_dir }}/kubelet"
+  command: rsync -piu "{{ local_release_dir }}/kubernetes/bin/kubelet" "{{ bin_dir }}/kubelet"
+  register: kubelet_copy
   changed_when: false
-  notify: restart kubelet
 
 - name: install | Calico-plugin | Directory
   file: path=/usr/libexec/kubernetes/kubelet-plugins/net/exec/calico/ state=directory
   when: kube_network_plugin == "calico"
 
 - name: install | Calico-plugin | Binary
-  command: cp -pf "{{ local_release_dir }}/calico/bin/calico" "/usr/libexec/kubernetes/kubelet-plugins/net/exec/calico/calico"
+  command: rsync -piu "{{ local_release_dir }}/calico/bin/calico" "/usr/libexec/kubernetes/kubelet-plugins/net/exec/calico/calico"
   when: kube_network_plugin == "calico"
   changed_when: false
-  notify: restart kubelet

roles/kubernetes/node/tasks/main.yml

@@ -45,6 +45,11 @@
     src: manifests/kube-proxy.manifest.j2
     dest: "{{ kube_manifest_dir }}/kube-proxy.manifest"
 
+- name: Restart kubelet if binary changed
+  command: /bin/true
+  notify: restart kubelet
+  when: kubelet_copy.stdout_lines
+
 - name: Enable kubelet
   service:
     name: kubelet

roles/kubernetes/preinstall/tasks/main.yml

@@ -26,9 +26,12 @@
   always_run: True
   register: init_system_output
   changed_when: False
+  tags: always
 
 - set_fact:
     init_system: "{{ init_system_output.stdout }}"
+  always_run: True
+  tags: always
 
 - name: Install python-apt for Debian distribs
   shell: apt-get install -y python-apt