Merge "Add role for installing docker and configuring registry mirror"

roles/install-docker/README.rst

@@ -0,0 +1,26 @@
+An ansible role to install docker and configure it to use mirrors if available.
+
+**Role Variables**
+
+.. zuul:rolevar:: mirror_fqdn
+   :default: {{ zuul_site_mirror_fqdn }}
+
+   The base host for mirror servers.
+
+.. zuul:rolevar:: docker_mirror
+
+   URL to override the generated docker hub mirror url based on
+   :zuul:rolevar:`install-docker.mirror_fqdn`.
+
+.. zuul:rolevar:: use_upstream_docker
+   :default: True
+
+   By default this role adds repositories to install docker from upstream
+   docker. Set this to False to use the docker that comes with the distro.
+
+.. zuul:rolevar:: docker_update_channel
+   :default: stable
+
+   Which update channel to use for upstream docker. The two choices are
+   ``stable``, which is the default and updates quarterly, and ``edge``
+   which updates monthly.

roles/install-docker/defaults/main.yaml

@@ -0,0 +1,2 @@
+use_upstream_docker: True
+docker_update_channel: stable

roles/install-docker/tasks/distro.yaml

@@ -0,0 +1,5 @@
+- name: Install docker
+  become: yes
+  package:
+    name: docker-engine
+    state: present

roles/install-docker/tasks/main.yaml

@@ -0,0 +1,30 @@
+- name: Set mirror_fqdn fact
+  when:
+    - mirror_fqdn is not defined
+    - zuul_site_mirror_fqdn is defined
+  set_fact:
+    mirror_fqdn: "{{ zuul_site_mirror_fqdn }}"
+
+- name: Set up docker mirrors
+  include: mirror.yaml
+  when: mirror_fqdn is defined
+  static: no
+
+- name: Install docker-ce from upstream
+  include: upstream.yaml
+  when: use_upstream_docker
+
+- name: Install docker-engine from distro
+  include: distro.yaml
+  when: not use_upstream_docker
+
+- name: Add user to docker group
+  become: yes
+  user:
+    name: "{{ ansible_user }}"
+    groups:
+      - docker
+    append: yes
+
+- name: reset ssh connection to pick up docker group
+  meta: reset_connection

roles/install-docker/tasks/mirror.yaml

@@ -0,0 +1,28 @@
+- name: Create docker directory
+  become: yes
+  file:
+    state: directory
+    path: /etc/docker
+
+- name: Set docker_mirror fact for upstream docker
+  when:
+    - docker_mirror is not defined
+    - use_upstream_docker
+  set_fact:
+    docker_mirror: "http://{{ mirror_fqdn }}:8082"
+
+- name: Set docker_mirror fact for distro docker
+  when:
+    - docker_mirror is not defined
+    - not use_upstream_docker
+  set_fact:
+    docker_mirror: "http://{{ mirror_fqdn }}:8081/registry-1.docker/"
+
+- name: Install dockerhub proxy configuration
+  become: yes
+  template:
+    dest: /etc/docker/daemon.json
+    group: root
+    mode: 0644
+    owner: root
+    src: daemon.json.j2

roles/install-docker/tasks/upstream.yaml

@@ -0,0 +1,32 @@
+- name: Install pre-reqs
+  package:
+    name: "{{ item }}"
+    state: present
+  with_items:
+    - apt-transport-https
+    - ca-certificates
+    - curl
+    - software-properties-common
+  become: yes
+
+- name: Add docker GPG key
+  become: yes
+  apt_key:
+    data: "{{ ubuntu_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
+    mode: 0644
+    owner: root
+    src: sources.list.j2
+
+- name: Install docker
+  become: yes
+  apt:
+    name: docker-ce
+    state: present
+    update_cache: yes

roles/install-docker/templates/daemon.json.j2

@@ -0,0 +1,3 @@
+{
+  "registry-mirrors": ["{{ docker_mirror }}"]
+}

roles/install-docker/templates/sources.list.j2

@@ -0,0 +1 @@
+deb [arch=amd64] https://download.docker.com/linux/ubuntu {{ ansible_lsb.codename }} {{ docker_update_channel }}

roles/install-docker/vars/default.yaml

@@ -0,0 +1,63 @@
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