Add new partitioner script, which can do job on first boot

roles/docker/README.rst

@@ -10,6 +10,17 @@ dependencies into a standardized unit for software development." Their site has
 Mantl to ship units of work around the cluster, combined
 with :doc:`marathon`'s scheduling.
 
+Variables
+---------
+
+.. data :: docker_source
+
+  Specify origin of docker packages.
+
+  Possible values:  ``docker``, ``redhat``.
+
+  Default: ``docker` -- using packages from ``Docker, inc``.
+
 Using a private Docker registry
 -------------------------------
 

roles/docker/defaults/main.yml

@@ -1,12 +1,38 @@
+# Where do we get docker packages from?
+# values are redhat or docker
+docker_package_source: docker
+
+docker_package: '{% if docker_package_source == "docker" %}docker-engine{% else %}docker{% endif %}'
+
+# inversion of docker_package for upgrade/transition code path
+docker_package_to_remove: '{% if docker_package_source == "docker" %}docker{% else %}docker-engine{% endif %}'
+
 do_private_docker_registry: false
 docker_lvm_backed: "{% if provider in ['gce', 'openstack', 'aws'] %}True{% else %}False{% endif %}"
 
+# Docker log options: See https://docs.docker.com/engine/admin/logging/overview/
+docker_log_driver: journald
+
+# Docker options
+docker_options:
+  - "--dns {{ private_ipv4 }}"
+  - "--log-driver={{ docker_log_driver }}"
+  - "{% if docker_selinux_enabled %}--selinux-enabled {% endif %}"
+  - "{% if kube_build is defined %}--dns-search {{ cluster_name }}{% endif %}"
+
+# Docker network options can be provided as a list
+docker_network_options:
+  - "-H unix:///var/run/docker.sock"
+# If you want to open the docker API, uncomment the line below.
+# Please note this is insecure
+#  - "-H tcp://0.0.0.0:2375"
+
 # Possible values: overlay (default), devicemapper, btrfs (unsupported)
 # Used with docker-storage-setup
 docker_storage_driver: overlay
 
-## Settings for devicemapper thinprovider
-
+## Settings for devicemapper thinprovider (docker-storage-setup)
+## These are not used for overlay on lvm
 ## Refer to commentaries in ../templates/docker-storage-setup.conf.j2
 ## or `man lvcreate` for acceptable sizes, and their syntax
 docker_lvm_data_volume_size: 40%FREE

roles/docker/files/20-ExecStart.conf.j2

@@ -0,0 +1,8 @@
+[Service]
+ExecStart=
+ExecStart=/usr/bin/docker daemon $OPTIONS \
+          $MANTL_STORAGE_OPTIONS \
+          $DOCKER_NETWORK_OPTIONS \
+          $ADD_REGISTRY \
+          $BLOCK_REGISTRY \
+          $INSECURE_REGISTRY

roles/docker/files/docker.repo

@@ -0,0 +1,6 @@
+[dockerrepo]
+name=Docker Repository
+baseurl=https://yum.dockerproject.org/repo/main/centos/$releasever/
+enabled=1
+gpgcheck=1
+gpgkey=https://yum.dockerproject.org/gpg

roles/docker/tasks/lvm.yml

@@ -9,3 +9,13 @@
   tags:
     - docker
     - bootstrap
+
+- name: configure lvm for docker
+  sudo: yes
+  template:
+    src: docker-volume.conf.j2
+    dest: /etc/mantl/filesystems.d/20-docker-volume.conf
+    mode: 0644
+  tags:
+    - docker
+    - disk

roles/docker/tasks/main.yml

@@ -9,105 +9,38 @@
     - docker
     - bootstrap
 
-- name: install docker packages
-  sudo: yes
-  yum:
-    name: "{{ item }}"
-    state: present
-  with_items:
-    - docker
-    - docker-selinux
-  tags:
-    - docker
-    - bootstrap
-
-- name: check if docker storage already set up with devicemapper
-  sudo: yes
-  shell: "test -f /etc/sysconfig/docker-storage-setup && . /etc/sysconfig/docker-storage-setup && echo ${STORAGE_DRIVER:-NOT_SET}"
-  register: docker_storage_already_set_up
-  tags:
-    - disk
-    - docker
-
-- name: set docker_configure_lvm
-  set_fact:
-    docker_configure_lvm: '{{ docker_lvm_backed|bool and docker_storage_driver in ["btrfs", "overlay"] and docker_storage_already_set_up.stdout in ["NOT_SET", "btrfs", "overlay"] }}'
-  tags:
-    - disk
-    - docker
-
-- name: create backing storage volume for docker storage
-  sudo: yes
-  lvol:
-    vg: "{{ volume_group_name }}"
-    lv: "{{ docker_volume_name }}"
-    size: "{{ docker_volume_size }}"
-  when: docker_configure_lvm|bool
-  tags:
-    - disk
-    - docker
-
-- name: create backing storage filesystem for docker storage
+- name: enable Docker, Inc. yum repo
   sudo: yes
-  filesystem:
-    dev: "{{ docker_volume_device }}"
-    fstype: "{{ docker_volume_fs_type }}"
-    opts: "{{ docker_volume_fs_opts }}" 
-  when: docker_configure_lvm|bool
-  tags:
-    - disk
-    - docker
-
-- name: create mount point for docker storage
-  sudo: yes
-  file:
-    state: directory
-    name: "{{ docker_volume_mount }}"
-    mode: 0755
-  when: docker_configure_lvm|bool
+  copy:
+    src: docker.repo
+    dest: /etc/yum.repos.d/docker.repo
   tags:
-    - disk
     - docker
+  when: docker_package_source is defined and docker_package_source == "docker" 
 
-- name: mount docker storage
+- name: remove old docker package
   sudo: yes
-  mount:
-    state: mounted
-    name: "{{ docker_volume_mount }}"
-    fstype: "{{ docker_volume_fs_type }}"
-    src: "{{ docker_volume_device }}"
-    dump: 1
-    passno: 2
-  when: docker_configure_lvm|bool
+  yum:
+    name: "{{ item }}"
+    state: absent
+  with_items:
+    - "{{ docker_package_to_remove }}"
+    - "{{ docker_package_to_remove }}-selinux"
   tags:
-    - disk
     - docker
+    - bootstrap
 
-- name: setup docker storage
+- name: install docker packages
   sudo: yes
-  lineinfile:
-    dest: /etc/sysconfig/docker-storage-setup
-    regexp: "^{{ item.var }}=.*"
-    line: "{{ item.var }}={{ item.value }}"
+  yum:
+    name: "{{ item }}"
     state: present
-    create: yes
   with_items:
-    - var: STORAGE_DRIVER
-      value: "{{ docker_storage_driver }}"
-    - var: DATA_SIZE
-      value: "{{ docker_lvm_data_volume_size }}"
-    - var: VG
-      value: "{{ volume_group_name }}"
-    - var: MIN_DATA_SIZE
-      value: "{{ docker_lvm_data_volume_size_min }}"
-    - var: AUTO_EXTEND_POOL
-      value: "{{ docker_lvm_auto_extend_pool }}"
-  when: docker_lvm_backed|bool and docker_storage_already_set_up.stdout == "NOT_SET"
+    - "{{ docker_package }}"
+    - "{{ docker_package }}-selinux"
   tags:
     - docker
-
-- include: lvm.yml
-  when: docker_lvm_backed|bool and provider!="bare-metal"
+    - bootstrap
 
 - name: create rsyslog.d
   sudo: yes
@@ -131,19 +64,41 @@
     - docker
 
 
-- name: configure docker consul dns
+- name: create directory for systemd drop-ins
   sudo: yes
-  lineinfile:
-    dest: /etc/sysconfig/docker
-    regexp: ^OPTIONS=
-    line: OPTIONS='{% if docker_selinux_enabled %}--selinux-enabled {% endif %}--dns {{ private_ipv4 }} --dns-search service.{{ consul_dns_domain }} {% if kube_build is defined %}--dns-search {{ cluster_name }}{% endif %} --log-driver=syslog'
-    state: present
-    create: yes
+  file:
+    path: /etc/systemd/system/docker.service.d
+    state: directory
+    mode: 0755 
+  tags:
+    - docker
+
+# Not restart docker on file drop
+- name: systemd drop-in for options
+  sudo: yes
+  template:
+    src:  "{{ item }}.j2"
+    dest: "/etc/systemd/system/docker.service.d/{{ item }}"
+  with_items:
+    - 10-options.conf
+    - 12-network-options.conf
+    - 14-storage-options.conf
   notify:
-    - restart docker
+    - reload systemd
   tags:
     - docker
 
+# Not restart docker on file drop
+- name: systemd drop-in for ExecStart
+  sudo: yes
+  copy:
+    src: 20-ExecStart.conf.j2
+    dest: /etc/systemd/system/docker.service.d/20-ExecStart.conf
+  notify: 
+    - reload systemd
+  tags: 
+    - docker
+
 - name: ensure docker config dir exists
   sudo: yes
   file:
@@ -172,6 +127,9 @@
     - docker
     - skip_ansible_lint
 
+- include: lvm.yml
+  when: docker_lvm_backed|bool
+
 - name: enable docker
   sudo: yes
   service:
@@ -181,3 +139,4 @@
   tags:
     - docker
     - bootstrap # needed to install Docker images during bootstrap
+

roles/docker/templates/10-options.conf.j2

@@ -0,0 +1,3 @@
+# /etc/systemd/systemd/docker.service.d/10-options.conf
+[Service]
+Environment='OPTIONS={{ docker_options | join (" ") }}'

roles/docker/templates/12-network-options.conf.j2

@@ -0,0 +1,3 @@
+# /etc/systemd/systemd/docker.service.d/12-network-options.conf
+[Service]
+Environment='DOCKER_NETWORK_OPTIONS={{ docker_network_options | join (" ") }}'

roles/docker/templates/14-storage-options.conf.j2

@@ -0,0 +1,3 @@
+# /etc/systemd/systemd/docker.service.d/14-storage-options.conf
+[Service]
+EnvironmentFile=/etc/sysconfig/mantl-storage

roles/docker/templates/docker-volume.conf.j2

@@ -0,0 +1,25 @@
+{% if docker_lvm_backed|bool and docker_storage_driver in ["btrfs", "overlay"] %}
+[volume:docker]
+group = {{ volume_group_name }}
+volume = {{ docker_volume_name }}
+size = {{ docker_volume_size }}
+
+[filesystem:docker]
+dev = {{ docker_volume_device }}
+fstype = {{ docker_volume_fs_type }}
+mount = {{ docker_volume_mount }}
+required_by = docker-storage-setup.service docker.service
+
+[write:config]
+file = /etc/sysconfig/mantl-storage
+content = MANTL_STORAGE_OPTIONS=--storage-driver {{ docker_storage_driver }} 
+{% endif %}
+{%if docker_lvm_backed|bool and docker_storage_driver == "devicemapper" %}
+[thin:docker]
+group = {{ volume_group_name }}
+# Fixed volume name, to be compatible with docker-storage-setup
+pool = docker-pool
+size = {{ docker_lvm_data_volume_size }}
+config = /etc/sysconfig/mantl-storage
+
+{% endif %}

roles/lvm/README.rst

@@ -29,6 +29,14 @@ Variables
    - For GCE: /dev/disk/by-id/google-lvm 
    - For AWS: /dev/xvdh
 
+.. debug_storage_setup:
+
+   Define source of partitioner script. If set to ``True`` then
+   ``mantl-storage-setup`` script and associated files deployed from ansible tree,
+   otherwise it come with ``mantl-storage-setup`` package from Mantl repository.
+
+   default: ``False``
+
 Facts
 -----
 

roles/lvm/defaults/main.yml

@@ -6,3 +6,5 @@ lvm_physical_device: >
   {%- elif provider == 'aws' -%}/dev/xvdh
   {%- elif provider == 'openstack' -%}/dev/vdb
   {%- endif -%}{%- endif -%}
+
+debug_storage_setup: False