Isolate installation mode

The role variables were making generalizations on distro package
and installation methods. This change further breaks things out,
now explicitly supporting ubuntu, debian, fedora, and
redhat(centos).

Change-Id: Ib1749721b32b21ba1ab661a64097d79037e416f3
Signed-off-by: Kevin Carter <kecarter@redhat.com>

roles/install-docker/handlers/main.yml

@@ -1,7 +1,7 @@
 ---
 
 - name: Assure docker service is running
-  become: yes
+  become: true
   service:
     name: docker
     enabled: yes
@@ -9,7 +9,7 @@
   listen: Restart docker
 
 - name: Correct group ownership on docker sock
-  become: yes
+  become: true
   file:
     path: /var/run/docker.sock
     group: "{{ docker_group }}"

roles/install-docker/tasks/docker-distro.yaml

@@ -0,0 +1,14 @@
+---
+
+- name: Distro block
+  become: true
+  block:
+    - name: Install docker
+      package:
+        name: "{{ docker_distro_packages }}"
+        state: present
+      when:
+        - not (use_upstream_docker | bool)
+      notify: Assure docker service is running
+
+    - include_tasks: docker-setup.yaml

roles/install-docker/tasks/docker-setup.yaml

@@ -0,0 +1,16 @@
+---
+
+- name: Ensure "docker" group exists
+  group:
+    name: "{{ docker_group }}"
+    state: present
+
+- name: Add user to docker group
+  user:
+    name: "{{ ansible_user }}"
+    groups:
+      - "{{ docker_group }}"
+    append: yes
+
+- name: Reset ssh connection to pick up docker group
+  meta: reset_connection

roles/install-docker/tasks/docker-upstream.yaml

@@ -0,0 +1,13 @@
+---
+
+- name: Upstream block
+  become: true
+  block:
+    - name: Set up docker mirrors
+      include_role:
+        name: use-docker-mirror
+
+    - name: Install docker-ce from upstream
+      include_tasks: "upstream-{{ ansible_pkg_mgr }}.yaml"
+
+    - include_tasks: docker-setup.yaml

roles/install-docker/tasks/main.yaml

@@ -17,10 +17,12 @@
 - name: Sanity check for distro selection
   fail:
     msg: >-
-      This role is not known to be compatible with this distro. Check the inventory and deployment
-      target settings. Make sure facts are being gathered prior to executing this role.
+      This role is not known to be compatible with this distro and no packages have been provided
+      for installation. Check the inventory and deployment target settings. Make sure facts are
+      being gathered prior to executing this role.
   when:
     - not (docker_distro_vars_loaded | bool)
+    - (docker_distro_packages | length) < 1
 
 - name: Sanity check for distro install
   fail:
@@ -53,54 +55,11 @@
     - (docker_mirror_base_url | length) < 1
     - use_upstream_docker | bool
 
-- name: Upstream block
-  when:
-    - use_upstream_docker | bool
-  block:
-    - name: Set up docker mirrors
-      include_role:
-        name: use-docker-mirror
-
-    - name: Install docker-ce from upstream
-      include_tasks: "upstream-{{ ansible_pkg_mgr }}.yaml"
-  rescue:
-    - name: Notice
-      debug:
-        msg: >-
-          The upstream installation of docker has failed, falling back to the distro packages.
-
-    - name: Re-Set the use upstream flag
-      set_fact:
-        use_upstream_docker: false
-
-- name: Install docker
-  become: yes
-  package:
-    name: "{{ docker_distro_packages }}"
-    state: present
-  when:
-    - not (use_upstream_docker | bool)
-  notify: Assure docker service is running
-
-- name: Ensure "docker" group exists
-  group:
-    name: "{{ docker_group }}"
-    state: present
-
-- name: Add user to docker group
-  become: yes
-  user:
-    name: "{{ ansible_user }}"
-    groups:
-      - "{{ docker_group }}"
-    append: yes
+- include_tasks: "docker-{{ (use_upstream_docker | bool) | ternary('upstream', 'distro') }}.yaml"
 
 - name: Flush handlers before role exit
   meta: flush_handlers
 
-- name: Reset ssh connection to pick up docker group
-  meta: reset_connection
-
 - name: Validate ability to talk with docker
   command: docker ps
   changed_when: false

roles/install-docker/tasks/upstream-apt.yaml

@@ -1,17 +1,16 @@
+---
+
 - name: Install pre-reqs
   package:
     name: "{{ _docker_upstream_distro_required_packages }}"
     state: present
-  become: yes
 
 - name: Add docker GPG key
-  become: yes
   apt_key:
     data: "{{ docker_gpg_key }}"
 
 # TODO(mordred) We should add a proxy cache mirror for this
 - name: Add docker apt repo
-  become: yes
   template:
     dest: /etc/apt/sources.list.d/docker.list
     group: root
@@ -19,10 +18,4 @@
     owner: root
     src: sources.list.j2
 
-- name: Install docker
-  become: yes
-  apt:
-    name: "{{ docker_upstream_distro_packages }}"
-    state: present
-    update_cache: yes
-  notify: Restart docker
+- include_tasks: upstream-package-installation.yaml

roles/install-docker/tasks/upstream-package-installation.yaml

@@ -0,0 +1,8 @@
+---
+
+- name: Install docker
+  package:
+    name: "{{ docker_upstream_distro_packages }}"
+    state: present
+    update_cache: yes
+  notify: Restart docker

roles/install-docker/tasks/upstream-yum.yaml

@@ -4,7 +4,6 @@
   package:
     name: "{{ _docker_upstream_distro_required_packages }}"
     state: present
-  become: yes
 
 - name: Create tmp gpg key file
   copy:
@@ -18,17 +17,11 @@
 
 # TODO(mordred) We should add a proxy cache mirror for this
 - name: Add docker repo
-  become: yes
-  copy:
+  template:
     dest: /etc/yum.repos.d/docker-ce.repo
     group: root
     mode: 0644
     owner: root
     src: "{{ docker_repo_template }}"
 
-- name: Install docker
-  become: yes
-  package:
-    name: "{{ docker_upstream_distro_packages }}"
-    state: present
-  notify: Restart docker
+- include_tasks: upstream-package-installation.yaml

roles/install-docker/vars/debian.yaml

@@ -16,4 +16,4 @@ _docker_upstream_distro_packages:
 
 docker_distro_vars_loaded: true
 
-_docker_mirror_base_url: "https://{{ docker_download_fqdn }}/linux/ubuntu"
+_docker_mirror_base_url: "https://{{ docker_download_fqdn }}/linux/debian"

roles/install-docker/vars/fedora.yaml

@@ -11,7 +11,7 @@ _docker_upstream_distro_packages:
   - docker-ce-cli
   - containerd.io
 
-docker_repo_template: docker-ce-centos.repo
+docker_repo_template: docker-ce-centos.repo.j2
 
 docker_distro_vars_loaded: true
 

roles/install-docker/vars/opensuse.yaml

@@ -7,4 +7,11 @@ _docker_upstream_distro_required_packages: []
 
 _docker_upstream_distro_packages: []
 
+docker_repo_template: null
+
 docker_distro_vars_loaded: true
+
+_docker_mirror_base_url: null
+
+# OpenSUSE has no upstream mirror
+use_upstream_docker: false

roles/install-docker/vars/redhat.yaml

@@ -13,7 +13,7 @@ _docker_upstream_distro_packages:
   - docker-ce-cli
   - containerd.io
 
-docker_repo_template: docker-ce-centos.repo
+docker_repo_template: docker-ce-centos.repo.j2
 
 docker_distro_vars_loaded: true
 

roles/install-docker/vars/ubuntu.yaml

@@ -0,0 +1,19 @@
+---
+
+_docker_distro_packages:
+  - docker.io
+
+_docker_upstream_distro_required_packages:
+  - apt-transport-https
+  - ca-certificates
+  - curl
+  - software-properties-common
+
+_docker_upstream_distro_packages:
+  - docker-ce
+  - docker-ce-cli
+  - containerd.io
+
+docker_distro_vars_loaded: true
+
+_docker_mirror_base_url: "https://{{ docker_download_fqdn }}/linux/ubuntu"