use copy and slurp module (#3313)

roles/etcd/tasks/gen_certs_script.yml

@@ -71,101 +71,61 @@
     - inventory_hostname == groups['etcd'][0]
   notify: set etcd_secret_changed
 
-- set_fact:
-    all_master_certs: "['ca-key.pem',
-                      {% for node in groups['etcd'] %}
-                      'admin-{{ node }}.pem',
-                      'admin-{{ node }}-key.pem',
-                      'member-{{ node }}.pem',
-                      'member-{{ node }}-key.pem',
-                      {% endfor %}]"
-    my_master_certs: ['ca-key.pem',
-                      'admin-{{ inventory_hostname }}.pem',
-                      'admin-{{ inventory_hostname }}-key.pem',
-                      'member-{{ inventory_hostname }}.pem',
-                      'member-{{ inventory_hostname }}-key.pem']
-    all_node_certs: "['ca.pem',
-                    {% for node in (groups['k8s-cluster'] + groups['calico-rr']|default([]))|unique %}
-                    'node-{{ node }}.pem',
-                    'node-{{ node }}-key.pem',
-                    {% endfor %}]"
-    my_node_certs: ['ca.pem', 'node-{{ inventory_hostname }}.pem', 'node-{{ inventory_hostname }}-key.pem']
-  tags:
-    - facts
-
 - name: Gen_certs | Gather etcd master certs
-  shell: "tar cfz - -C {{ etcd_cert_dir }} -T /dev/stdin <<< {{ my_master_certs|join(' ') }} {{ all_node_certs|join(' ') }} | base64 --wrap=0"
-  args:
-    executable: /bin/bash
-  register: etcd_master_cert_data
-  no_log: true
-  check_mode: no
+  slurp:
+    src: "{{ item }}"
+  register: etcd_master_certs
+  with_items:
+    - "{{ etcd_cert_dir }}/ca.pem"
+    - "{{ etcd_cert_dir }}/ca-key.pem"
+    - "[{% for node in groups['etcd'] %}
+        '{{ etcd_cert_dir }}/admin-{{ node }}.pem',
+        '{{ etcd_cert_dir }}/admin-{{ node }}-key.pem',
+        '{{ etcd_cert_dir }}/member-{{ node }}.pem',
+        '{{ etcd_cert_dir }}/member-{{ node }}-key.pem',
+        {% endfor %}]"
+    - "[{% for node in (groups['k8s-cluster'] + groups['calico-rr']|default([]))|unique %}
+        '{{ etcd_cert_dir }}/node-{{ node }}.pem',
+        '{{ etcd_cert_dir }}/node-{{ node }}-key.pem',
+        {% endfor %}]"
   delegate_to: "{{groups['etcd'][0]}}"
   when: inventory_hostname in groups['etcd'] and sync_certs|default(false) and
         inventory_hostname != groups['etcd'][0]
   notify: set etcd_secret_changed
 
 - name: Gen_certs | Gather etcd node certs
-  shell: "tar cfz - -C {{ etcd_cert_dir }} -T /dev/stdin <<< {{ my_node_certs|join(' ') }} | base64 --wrap=0"
-  args:
-    executable: /bin/bash
-  register: etcd_node_cert_data
-  no_log: true
-  check_mode: no
+  slurp:
+    src: "{{ item }}"
+  register: etcd_node_certs
+  with_items:
+    - "{{ etcd_cert_dir }}/ca.pem"
+    - "{{ etcd_cert_dir }}/node-{{ inventory_hostname }}.pem"
+    - "{{ etcd_cert_dir }}/node-{{ inventory_hostname }}-key.pem"
   delegate_to: "{{groups['etcd'][0]}}"
   when: (('calico-rr' in groups and inventory_hostname in groups['calico-rr']) or
         inventory_hostname in groups['k8s-cluster']) and
         sync_certs|default(false) and inventory_hostname not in groups['etcd']
   notify: set etcd_secret_changed
 
-# NOTE(mattymo): Use temporary file to copy master certs because we have a ~200k
-# char limit when using shell command
-
-# FIXME(mattymo): Use tempfile module in ansible 2.3
-- name: Gen_certs | Prepare tempfile for unpacking certs
-  command: mktemp /tmp/certsXXXXX.tar.gz
-  register: cert_tempfile
-  when: inventory_hostname in groups['etcd'] and sync_certs|default(false) and
-        inventory_hostname != groups['etcd'][0]
-
-- name: Gen_certs | Write master certs to tempfile
+- name: Gen_certs | Write etcd master certs
   copy:
-    content: "{{etcd_master_cert_data.stdout}}"
-    dest: "{{cert_tempfile.stdout}}"
-    owner: root
-    mode: "0600"
-  when: inventory_hostname in groups['etcd'] and sync_certs|default(false) and
-        inventory_hostname != groups['etcd'][0]
-
-- name: Gen_certs | Unpack certs on masters
-  shell: "base64 -d < {{ cert_tempfile.stdout }} | tar xz -C {{ etcd_cert_dir }}"
-  no_log: true
-  changed_when: false
-  check_mode: no
-  when: inventory_hostname in groups['etcd'] and sync_certs|default(false) and
-        inventory_hostname != groups['etcd'][0]
-  notify: set secret_changed
-
-- name: Gen_certs | Cleanup tempfile
-  file:
-    path: "{{cert_tempfile.stdout}}"
-    state: absent
+    dest: "{{ item.item }}"
+    content: "{{ item.content | b64decode }}"
+    group: "{{ etcd_cert_group }}"
+    owner: kube
+    mode: 0640
+  with_items: "{{ etcd_master_certs.results }}"
   when: inventory_hostname in groups['etcd'] and sync_certs|default(false) and
         inventory_hostname != groups['etcd'][0]
 
-- name: Gen_certs | Copy certs on nodes
-  shell: "base64 -d <<< '{{etcd_node_cert_data.stdout|quote}}' | tar xz -C {{ etcd_cert_dir }}"
-  args:
-    executable: /bin/bash
-  changed_when: false
-  when: sync_certs|default(false) and
-        inventory_hostname not in groups['etcd']
-
-- name: Gen_certs | check certificate permissions
-  file:
-    path: "{{ etcd_cert_dir }}"
+- name: Gen_certs | Write etcd node certs
+  copy:
+    dest: "{{ item.item }}"
+    content: "{{ item.content | b64decode }}"
     group: "{{ etcd_cert_group }}"
-    state: directory
     owner: kube
-    mode: "640"
-    recurse: yes
+    mode: 0640
+  with_items: "{{ etcd_node_certs.results }}"
+  when: (('calico-rr' in groups and inventory_hostname in groups['calico-rr']) or
+        inventory_hostname in groups['k8s-cluster']) and
+        sync_certs|default(false) and inventory_hostname not in groups['etcd']

roles/etcd/tasks/install_host.yml

 ---
 - name: install | Copy etcd and etcdctl binary from download dir
-  synchronize:
+  copy:
     src: "{{ local_release_dir }}/etcd-{{ etcd_version }}-linux-amd64/{{ item }}"
     dest: "{{ bin_dir }}/{{ item }}"
-    compress: no
-    perms: yes
-    owner: no
-    group: no
-  changed_when: false
-  delegate_to: "{{ inventory_hostname }}"
+    mode: 0755
+    remote_src: yes
   with_items:
-    - "etcd"
-    - "etcdctl"
-  when: etcd_cluster_setup
-
-- name: install | Set etcd and etcdctl binary permissions
-  file:
-    path: "{{ bin_dir }}/{{ item }}"
-    mode: "0755"
-    state: file
-  with_items:
-    - "etcd"
-    - "etcdctl"
+  - etcd
+  - etcdctl
   when: etcd_cluster_setup