Changed for lxc-host setup/build for multi-distro

This change updates the lxc-host setup role to build the lxc cache using the
download template based on default images found here:[0]. These images are
upsteam builds from the greater LXC/D community.

This update adds support for Ubuntu 14.04, 16.04 and RHEL/CentOS 7 container
types and the cache will be generated from the host Operating system.

[0] - https://images.linuxcontainers.org/

Change-Id: Ie13be2322d28178760481c59805101d6aeef4f36
Co-Authored-By: Jesse Pretorius <jesse.pretorius@rackspace.co.uk>
Signed-off-by: Kevin Carter <kevin.carter@rackspace.com>

defaults/main.yml

@@ -15,7 +15,7 @@
 
 # lxc container rootfs directory and cache path
 lxc_container_directory: "/var/lib/lxc"
-lxc_container_cache_path: "/var/cache/lxc"
+lxc_container_cache_path: "/var/cache/lxc/download"
 
 # lxc container net network
 lxc_net_bridge: lxcbr0
@@ -44,16 +44,6 @@ lxc_container_net_name: eth0  ## name of the interface inside the container.
 lxc_kernel_options:
   - { key: 'fs.inotify.max_user_instances', value: 1024 }
 
-# Default image to build from
-lxc_container_user_password: "{{ lookup('pipe', 'date --rfc-3339=ns | sha512sum | base64 | head -c 32') }}"
-lxc_container_template_options: >
-  --release {{ lxc_container_release }}
-  --user {{ lxc_container_user_name }}
-  --password {{ lxc_container_user_password }}
-
-# Set this boolean value to remove any previously prepared base image
-lxc_container_base_delete: no
-
 lxc_pip_packages:
   - lxc-python2
 
@@ -68,16 +58,8 @@ lxc_cache_sshd_configuration:
     - { regexp: "^X11Forwarding",           line: "X11Forwarding no" }
     - { regexp: "^PasswordAuthentication",  line: "PasswordAuthentication no" }
 
-# Validate Certificates when downloading lxc_container_caches.
-# May be set to "no" when proxy server is intercepting the certificates.
-lxc_cache_validate_certs: "yes"
-
-# Prebuilt images to deploy onto hosts for use in containers.
-# lxc_container_caches:
-#   - url: "https://rpc-repo.rackspace.com/container_images/rpc-trusty-container.tgz"
-#     name: "trusty.tgz"
-#     sha256sum: "56c6a6e132ea7d10be2f3e8104f47136ccf408b30e362133f0dc4a0a9adb4d0c"
-#     chroot_path: trusty/rootfs-amd64
+# The compression ratio used when creating the container cache rootfs archive
+lxc_image_compression_ratio: 0
 
 # A list of files may be copied into the container image cache during its preparation.
 # Example:
@@ -85,3 +67,22 @@ lxc_cache_validate_certs: "yes"
 #     - src: "/etc/openstack_deploy/files/etc/issue"
 #       dest: "/etc/issue"
 lxc_container_cache_files: []
+
+lxc_image_cache_server: images.linuxcontainers.org
+
+## Default download template options
+##  This can be customized to use a local build server and options.
+##  By default these options will be fulfilled by the distro specific
+##  variable files found in vars/
+# lxc_cache_download_template_options: >
+#   --dist NAME_OF_DISTRO
+#   --release DISTRO_RELEASE
+#   --arch CONTAINER_ARCH
+#   --force-cache
+#   --server SERVER_TO_GET_IMAGES_FROM
+lxc_cache_download_template_options: >
+  --dist {{ lxc_cache_map.distro }}
+  --release {{ lxc_cache_map.release }}
+  --arch {{ lxc_cache_map.arch }}
+  --force-cache
+  --server {{ lxc_image_cache_server }}

files/lxc-veth-check.sh

@@ -0,0 +1,44 @@
+#!/usr/bin/env bash
+
+# This is a very simple script to search a host for containers that have veth pairs that are not
+#  plugged into a given bridge. This can happen for a number of reasons however the most common
+#  one is due to a physical network interface being bounced which severs the containers connection
+#  to that interface. This script will identify container veth pairs. If any of the container veth
+#  devices are missing a master the script will attempt to locate the containers network information
+#  and connect the broken network link.
+
+# Do a simple lxc command check, if the client errors assume its not installed or ready and return 0
+lxc-ls --version || exit 0
+
+# Set the default script exit status
+exit_status=0
+# List all containers
+for container in $(lxc-ls); do
+  # List Links for the containers
+  for net_info in $(lxc-info -n "${container}" | awk '/Link/ {print $2}'); do
+    # If the link information is a veth and does not have a "master" continue
+    if ! ip -o -d link show "${net_info}" | grep veth | grep -q master; then
+        # Search for the interface file that contains the veth
+        lxc_interface_file=$(grep -l "${net_info}" /var/lib/lxc/${container}/{config,*.ini} | head -n 1)
+        # If an interface file is found continue
+        if [ ! -z "${lxc_interface_file}" ];then
+            # Get the first network link line from the lxc configuration file
+            veth_bridge_line=$(grep -hA10 ${net_info} "${lxc_interface_file}" | grep lxc.network.link | head -n 1)
+            # If a network interface file has a link entry continue
+            if [ ! -z "${veth_bridge_line}" ];then
+                # get the link name
+                veth_bridge=$(echo "${veth_bridge_line}" | awk -F'=' '{print $2}' | sed 's/\s//g')
+                # Plug the veth into the link
+                ip link set "${net_info}" master "${veth_bridge}"
+                echo "container ${container} had a broken veth ${net_info} not being plugged into "${veth_bridge}": this issue is now resolved"
+            else
+                # Notify the user that the issues can not be automatically fixed for a given container and veth
+                echo "container ${container} has a broken veth ${net_info} and an automated fix can not be found"
+                # Because of the inability to resolve the issue automatically set the exit_status to failure
+                exit_status=99
+            fi
+        fi
+    fi
+  done
+done
+exit "$exit_status"

handlers/main.yml

@@ -31,5 +31,23 @@
     pattern: "irqbalance"
     enabled: "yes"
 
+- name: Restart bridge
+  shell: "ifdown {{ lxc_net_bridge }} || true"
+  notify:
+    - Bring bridge up
+    - Veth check
+
 - name: Bring bridge up
   command: "ifup {{ lxc_net_bridge }}"
+
+- name: Veth check
+  command: "/usr/local/bin/lxc-veth-check"
+
+- name: Destroy base container
+  lxc_container:
+    name: "cache-{{ lxc_cache_map.distro }}"
+    state: absent
+  register: cache_destroy
+  retries: 3
+  delay: 10
+  until: cache_destroy|success

manual-test.rc

@@ -0,0 +1,22 @@
+export VIRTUAL_ENV=$(pwd)
+export ANSIBLE_HOST_KEY_CHECKING=False
+export ANSIBLE_SSH_CONTROL_PATH=/tmp/%%h-%%r
+
+# TODO (odyssey4me) These are only here as they are non-standard folder
+# names for Ansible 1.9.x. We are using the standard folder names for
+# Ansible v2.x. We can remove this when we move to Ansible 2.x.
+export ANSIBLE_ACTION_PLUGINS=${HOME}/.ansible/plugins/action
+export ANSIBLE_CALLBACK_PLUGINS=${HOME}/.ansible/plugins/callback
+export ANSIBLE_FILTER_PLUGINS=${HOME}/.ansible/plugins/filter
+export ANSIBLE_LOOKUP_PLUGINS=${HOME}/.ansible/plugins/lookup
+
+# This is required as the default is the current path or a path specified
+# in ansible.cfg
+export ANSIBLE_LIBRARY=${HOME}/.ansible/plugins/library
+
+# This is required as the default is '/etc/ansible/roles' or a path
+# specified in ansible.cfg
+export ANSIBLE_ROLES_PATH=${HOME}/.ansible/roles:$(pwd)/..
+
+echo "Run manual functional tests by executing the following:"
+echo "# ./.tox/functional/bin/ansible-playbook -i tests/inventory tests/test.yml -e \"rolename=$(pwd)\""

meta/main.yml

@@ -18,11 +18,15 @@ galaxy_info:
   description: Deployment of LXC hosts for use in Rackspace Private Cloud
   company: Rackspace
   license: Apache2
-  min_ansible_version: 1.6.6
+  min_ansible_version: 1.9.4
   platforms:
     - name: Ubuntu
       versions:
         - trusty
+        - xenial
+    - name: EL
+      versions:
+        - 7
   categories:
     - cloud
     - lxc

other-requirements.txt

@@ -14,7 +14,13 @@
 # TODO(odyssey4me) remove this once https://review.openstack.org/288634 has merged
 # and the disk images are rebuilt and redeployed.
 curl
+wget
 
 # Requirements for Paramiko 2.0
-libssl-dev
-libffi-dev
+libssl-dev        [platform:dpkg]
+libffi-dev        [platform:dpkg]
+libffi-devel      [platform:rpm]
+openssl-devel     [platform:rpm]
+
+# For selinux
+libselinux-python [platform:rpm]

releasenotes/notes/lxc-host-setup-refactor-e43559764af67fea.yaml

@@ -0,0 +1,29 @@
+---
+features:
+  - The ``lxc_host`` cache prep has been updated to use the LXC download
+    template. This removes the last remaining dependency the project has on
+    the `rpc-trusty-container.tgz image <http://rpc-repo.rackspace.com/container_images/rpc-trusty-container.tgz>`_.
+  - The ``lxc_host`` role will build lxc cache using the download
+    template built from `images found here <https://images.linuxcontainers.org>`_.
+    These images are upstream builds from the greater LXC/D community.
+  - The ``lxc_host`` role introduces support for CentOS 7 and Ubuntu 16.04
+    container types.
+upgrade:
+  - The ``lxc_host`` role no longer uses the distro specific lxc container
+    create template.
+  - |
+    The following variable changes have been made in the  ``lxc_host`` role:
+
+    * **lxc_container_user_password**: Removed because the default lxc
+      container user is no longer created by the lxc container template.
+    * **lxc_container_template_options**: This option was renamed to
+      *lxc_cache_download_template_options*. The deprecation filter was not
+      used because the values provided from this option have been
+      fundamentally changed and potentially old overrides will cause
+      problems.
+    * **lxc_container_base_delete**: Removed because the cache will be
+      refreshed upon role execution.
+    * **lxc_cache_validate_certs**: Removed because the Ansible ``get_url``
+      module is no longer used.
+    * **lxc_container_caches**: Removed because the container create process
+      will build a cached image based on the host OS.

run_tests.sh

@@ -19,7 +19,11 @@ FUNCTIONAL_TEST=${FUNCTIONAL_TEST:-true}
 
 # prep the host
 if [ "$(which apt-get)" ]; then
-  apt-get install -y build-essential python2.7 python-dev git-core libssl-dev libffi-dev
+  apt-get update && apt-get install -y build-essential python2.7 python-dev git-core libffi-dev libssl-dev
+fi
+
+if [ "$(which yum)" ]; then
+  yum install -y '@Development Tools' python-devel git libffi-devel openssl-devel
 fi
 
 # get pip, if necessary
@@ -33,9 +37,9 @@ pip install tox
 
 # run through each tox env and execute the test
 for tox_env in $(awk -F= '/envlist/ {print $2}' tox.ini | sed 's/,/ /g'); do
-  if [ "${tox_env}" != "ansible-functional" ]; then
+  if [ "${tox_env}" != "functional" ]; then
     tox -e ${tox_env}
-  elif [ "${tox_env}" == "ansible-functional" ]; then
+  elif [ "${tox_env}" == "functional" ]; then
     if ${FUNCTIONAL_TEST}; then
       tox -e ${tox_env}
     fi

tasks/lxc_cache.yml

@@ -13,57 +13,20 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-# TODO(odyssey4me)
-#  Ansible 1.9x only actually checks whether there's a local file - it never
-#  checks whether the local file matches the given sha256sum. Ansible 2.x
-#  fixes this, so once we move to Ansible 2.x we can pass this a sha256sum
-#  which will:
-#       a) allow us to remove force: yes
-#       b) allow the module to calculate the checksum of dest file which would
-#          result in file being downloaded only if provided and dest sha256sum
-#          checksums differ
-# Currently 'force:yes' will always download the file, then do a sha256sum
-# comparison between the downloaded file and the existing file, then replace
-# the existing file if it doesn't match.
-
-- name: Download lxc cache(s)
-  get_url:
-    url: "{{ item.url }}"
-    dest: "/var/cache/lxc_{{ item.name }}"
-    mode: "0644"
-    force: yes
-    sha256sum: "{{ item.sha256sum }}"
-    validate_certs: "{{ lxc_cache_validate_certs }}"
+- name: Create container
+  lxc_container:
+    name: "cache-{{ lxc_cache_map.distro }}"
+    template: "download"
+    state: stopped
+    backing_store: "dir"
+    template_options: "{{ lxc_cache_download_template_options }}"
   register: cache_download
   retries: 3
   delay: 10
-  until: cache_download | success
-  with_items: lxc_container_caches
+  until: cache_download|success
   tags:
     - lxc-cache
     - lxc-cache-download
 
-- name: Remove existing lxc cached images
-  file:
-    path: "{{ lxc_container_cache_path }}/{{ item.chroot_path }}"
-    state: absent
-  with_items: lxc_container_caches
-  when: >
-    cache_download | changed or
-    lxc_container_base_delete | bool
-  tags:
-    - lxc-cache
-    - lxc-cache-existing-remove
-
-- name: Move lxc cached image into place
-  unarchive:
-    src: "/var/cache/lxc_{{ item.name }}"
-    dest: "{{ lxc_container_cache_path }}/"
-    copy: "no"
-  with_items: lxc_container_caches
-  when: >
-    cache_download | changed or
-    lxc_container_base_delete | bool
-  tags:
-    - lxc-cache
-    - lxc-cache-unarchive
+- include: lxc_cache_preparation.yml
+- include: lxc_cache_create.yml

tasks/lxc_cache_create.yml

@@ -0,0 +1,36 @@
+---
+# Copyright 2016, Rackspace US, Inc.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+- name: Create lxc image
+  shell: |
+    rm {{ lxc_container_cache_path }}/{{ lxc_cache_map.distro }}/{{ lxc_cache_map.release }}/{{ lxc_cache_map.arch }}/default/rootfs.tar.xz
+    tar -Opc -C /var/lib/lxc/cache-{{ lxc_cache_map.distro }}/rootfs . | xz -{{ lxc_image_compression_ratio }} -c - > rootfs.tar.xz
+  args:
+    chdir: "{{ lxc_container_cache_path }}/{{ lxc_cache_map.distro }}/{{ lxc_cache_map.release }}/{{ lxc_cache_map.arch }}/default/"
+  notify: Destroy base container
+  tags:
+    - lxc-cache
+    - lxc-image-cache-create
+
+# TODO(cloudnull) This should be removed just as soon as the lxc-container create
+#  play supports using the download template instead of the distro specific one.
+- name: Create LEGACY LXC container cache
+  shell: |
+    mkdir -p /var/cache/lxc/{{ lxc_cache_map.release }}
+    cp -R /var/lib/lxc/cache-{{ lxc_cache_map.distro }}/rootfs /var/cache/lxc/{{ lxc_cache_map.release }}/rootfs-amd64
+  notify: Destroy base container
+  tags:
+    - lxc-cache
+    - lxc-legacy-image-cache-create

tasks/lxc_cache_preparation.yml

@@ -15,89 +15,93 @@
 
 - name: Copy files from deployment host to the container cache
   copy:
-    src: "{{ item[1].src }}"
-    dest: "{{ lxc_container_cache_path }}/{{ item[0].chroot_path }}/{{ item[1].dest }}"
-    owner: "{{ item[1].owner | default('root') }}"
-    group: "{{ item[1].group | default('root') }}"
-    mode: "{{ item[1].mode | default('644') }}"
-  with_nested:
-    - lxc_container_caches
-    - lxc_container_cache_files
+    src: "{{ item.src }}"
+    dest: "/var/lib/lxc/cache-{{ lxc_cache_map.distro }}/rootfs{{ item.dest }}"
+    owner: "{{ item.owner | default('root') }}"
+    group: "{{ item.group | default('root') }}"
+    mode: "{{ item.mode | default('644') }}"
+  with_items: lxc_container_cache_files
   tags:
     - lxc-cache
     - lxc-cache-copy-files
 
-- name: Create apt repos in the cached container
-  template:
-    src: sources.list.j2
-    dest: "{{ lxc_container_cache_path }}/{{ item.chroot_path }}/etc/apt/sources.list"
-  with_items: lxc_container_caches
-  tags:
-    - lxc-cache
-    - lxc-cache-update
-
-- name: Update container resolvers
-  template:
-    src: lxc-resolve-base.j2
-    dest: "{{ lxc_container_cache_path }}/{{ item.chroot_path }}/run/resolvconf/resolv.conf"
-  with_items: lxc_container_caches
-  tags:
-    - lxc-cache
-    - lxc-cache-update
-
-- name: Update container resolvconf base
-  template:
-    src: lxc-resolve-base.j2
-    dest: "{{ lxc_container_cache_path }}/{{ item.chroot_path }}/etc/resolvconf/resolv.conf.d/base"
-  with_items: lxc_container_caches
-  tags:
-    - lxc-cache
-    - lxc-cache-update
-
-- name: Update container resolvconf tail
+- name: Cached image preparation script
   copy:
-    content: "# Null Tail"
-    dest: "{{ lxc_container_cache_path }}/{{ item.chroot_path }}/etc/resolvconf/resolv.conf.d/tail"
-  with_items: lxc_container_caches
-  tags:
-    - lxc-cache
-    - lxc-cache-update
-
-- name: Update container resolvconf original
-  copy:
-    content: "# Null original"
-    dest: "{{ lxc_container_cache_path }}/{{ item.chroot_path }}/etc/resolvconf/resolv.conf.d/original"
-  with_items: lxc_container_caches
+    content: |
+      #!/usr/bin/env bash
+      set -x
+      {{ lxc_cache_map.cache_base_commands }}
+    dest: "/var/lib/lxc/cache-{{ lxc_cache_map.distro }}/rootfs/usr/local/bin/cache-prep-commands.sh"
+    mode: "0755"
   tags:
     - lxc-cache
     - lxc-cache-update
 
 # This task runs several commands against the cached image to speed up the
 # lxc_container_create playbook.
-- name: Prepare cached image
-  command: "chroot {{ lxc_container_cache_path }}/{{ item[0].chroot_path }} {{ item[1] }}"
-  with_nested:
-    - lxc_container_caches
-    - lxc_cache_commands
-  when: cache_download|changed
+- name: Prepare cached image setup commands
+  command: "chroot /var/lib/lxc/cache-{{ lxc_cache_map.distro }}/rootfs /usr/local/bin/cache-prep-commands.sh"
+  tags:
+    - lxc-cache
+    - lxc-cache-update
+
+- name: Create repos in the cached container
+  copy:
+    content: "{{ item.value }}"
+    dest: "/var/lib/lxc/cache-{{ lxc_cache_map.distro }}/rootfs{{ item.key }}"
+  with_dict: lxc_cache_map.repos
+  tags:
+    - lxc-cache
+    - lxc-cache-update
+
+- name: Copy cached image preparation package script into the target
+  copy:
+    content: |
+      #!/usr/bin/env bash
+      set -x
+      {{ lxc_cache_install_command }} {{ lxc_cache_map.cache_packages | join(' ') }}
+    dest: "/var/lib/lxc/cache-{{ lxc_cache_map.distro }}/rootfs/usr/local/bin/cache-package-prep-commands.sh"
+    mode: "0755"
+  tags:
+    - lxc-cache
+    - lxc-cache-update
+
+- name: Prepare cached image with packages
+  command: "chroot /var/lib/lxc/cache-{{ lxc_cache_map.distro }}/rootfs /usr/local/bin/cache-package-prep-commands.sh"
+  tags:
+    - lxc-cache
+    - lxc-cache-update
+
+- name: Cached image post-preparation package script
+  copy:
+    content: |
+      #!/usr/bin/env bash
+      set -x
+      {{ lxc_cache_map.cache_post_commands }}
+    dest: "/var/lib/lxc/cache-{{ lxc_cache_map.distro }}/rootfs/usr/local/bin/cache-post-prep-commands.sh"
+    mode: "0755"
+  tags:
+    - lxc-cache
+    - lxc-cache-update
+
+- name: Post-prepare cached image setup commands
+  command: "chroot /var/lib/lxc/cache-{{ lxc_cache_map.distro }}/rootfs /usr/local/bin/cache-post-prep-commands.sh"
   tags:
     - lxc-cache
     - lxc-cache-update
 
 - name: Adjust sshd configuration in container
   lineinfile:
-    dest: "{{ lxc_container_cache_path }}/{{ item[0].chroot_path }}/etc/ssh/sshd_config"
-    regexp: "{{ item[1].regexp }}"
-    line: "{{ item[1].line }}"
+    dest: "/var/lib/lxc/cache-{{ lxc_cache_map.distro }}/rootfs/etc/ssh/sshd_config"
+    regexp: "{{ item.regexp }}"
+    line: "{{ item.line }}"
     state: present
-  with_nested:
-    - lxc_container_caches
-    - lxc_cache_sshd_configuration
+  with_items: lxc_cache_sshd_configuration
   tags:
     - lxc-cache
     - lxc-cache-update
 
-- name: Obtain the system's ssh public key
+- name: Obtain the deploy system's ssh public key
   set_fact:
     lxc_container_ssh_key: "{{ lookup('file', '/root/.ssh/id_rsa.pub') }}"
   when: lxc_container_ssh_key is not defined
@@ -107,9 +111,9 @@
 
 - name: Deploy ssh public key into the cached image
   lineinfile:
-    dest: "{{ lxc_container_cache_path }}/{{ item.chroot_path }}/root/.ssh/authorized_keys"
+    dest: "/var/lib/lxc/cache-{{ lxc_cache_map.distro }}/rootfs/root/.ssh/authorized_keys"
     line: "{{ lxc_container_ssh_key }}"
-  with_items: lxc_container_caches
+    create: true
   tags:
     - lxc-cache
     - lxc-cache-update

tasks/lxc_install.yml

@@ -19,6 +19,12 @@
   tags:
     - install-apt
 
+- include: lxc_install_yum.yml
+  when:
+    - ansible_pkg_mgr == 'yum'
+  tags:
+    - install-yum
+
 - name: Install pip packages
   pip:
     name: "{{ item }}"

tasks/lxc_install_apt.yml

@@ -38,19 +38,33 @@
   until: install_packages|success
   retries: 5
   delay: 2
-  with_items: lxc_apt_packages
+  with_items: lxc_packages
   tags:
     - lxc-apt-packages
 
-# The functionality with changing the container cache has been added into the
-# upstream LXC templates with patch [ https://github.com/lxc/lxc/pull/558 ]
-# TODO: remove the below patch and pass lxc_container_cache_path to lxc
-# templates as appropriate once the lxc update goes mainstream
-- name: Patch lxc-ubuntu cache path
-  replace:
-    dest: /usr/share/lxc/templates/lxc-ubuntu
-    regexp: '\$LOCALSTATEDIR/cache/lxc'
-    replace: "{{ lxc_container_cache_path }}"
-    backup: yes
+- name: Drop irqbalance config
+  template:
+    src: "irqbalance.j2"
+    dest: "/etc/default/irqbalance"
+    owner: "root"
+    group: "root"
+    mode: "0644"
+  notify:
+    - Restart irqbalance
   tags:
-    - lxc-cache-path
+    - lxc-files
+    - lxc-irqbalance
+
+- name: Drop lxc-openstack app armor profile
+  template:
+    src: "lxc-openstack.apparmor.j2"
+    dest: "/etc/apparmor.d/lxc/lxc-openstack"
+    owner: "root"
+    group: "root"
+    mode: "0644"
+  notify:
+    - Load lxc-openstack apparmor profile
+    - Restart apparmor
+  tags:
+    - lxc-files
+    - lxc-apparmor

tasks/lxc_install_yum.yml

@@ -0,0 +1,213 @@
+---
+# Copyright 2016, Rackspace US, Inc.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+- name: Install yum packages
+  yum:
+    pkg: "{{ item }}"
+    state: present
+  register: install_packages
+  until: install_packages|success
+  retries: 5
+  delay: 2
+  with_items: lxc_packages
+  tags:
+    - lxc-packages
+
+- name: Create base directories
+  file:
+    path: "{{ item }}"
+    state: "directory"
+    owner: "root"
+    group: "root"
+  with_items:
+    - /opt/lxc_embedded
+  tags:
+    - lxc-directories
+
+- name: download file with sha256 check
+  get_url:
+    url: "{{ lxc_download_url }}"
+    dest: "/opt/lxc_embedded/{{ lxc_download_url | basename }}"
+  register: source_download
+  tags:
+    - lxc-source
+    - lxc-source-download
+
+- name: Move lxc cached image into place
+  unarchive:
+    src: "/opt/lxc_embedded/{{ lxc_download_url | basename }}"
+    dest: "/opt/lxc_embedded/"
+    copy: "no"
+  when: source_download|changed
+  tags:
+    - lxc-source
+    - lxc-source-unarchive
+
+- name: Create new linked lib location
+  copy:
+    content: "/opt/lxc_embedded/x86_64-linux-gnu"
+    dest: "/etc/ld.so.conf.d/lxc-x86_64.conf"
+    mode: "0644"
+  tags:
+    - lxc-source
+    - lxc-ldconfig
+
+- name: Create python3 link
+  file:
+    src: /usr/bin/python3.4
+    dest: /usr/bin/python3
+    state: link
+  tags:
+    - lxc-source
+
+- name: Build and install LXC
+  shell: '{{ item }}'
+  args:
+    creates: /opt/lxc_embedded/bin/lxc-ls
+    chdir: "/opt/lxc_embedded/{{ lxc_download_url | basename | replace('.tar.gz', '') }}"
+  environment:
+    PYTHONDEV_CFLAGS: "-I/usr/include/python3.4m"
+    PYTHONDEV_LIBS: "-lpython3.4m"
+  with_items:
+    - ./autogen.sh
+    - ./configure --prefix=/opt/lxc_embedded
+                  --libdir=/opt/lxc_embedded/x86_64-linux-gnu
+                  --libexecdir=/opt/lxc_embedded/x86_64-linux-gnu
+                  --with-rootfs-path=/opt/lxc_embedded/x86_64-linux-gnu/lxc
+                  --sysconfdir=/etc
+                  --localstatedir=/var
+                  --with-config-path=/var/lib/lxc
+                  --with-distro={{ ansible_distribution | lower }}
+                  --enable-seccomp
+                  --enable-python
+                  --enable-doc
+                  --enable-rpath
+                  --enable-selinux
+                  --enable-capabilities
+                  --enable-configpath-log
+                  --disable-tests
+                  --disable-lua
+    - make
+    - make install
+  tags:
+    - lxc-source
+    - lxc-source-compile
+
+- name: Ensure embedded LXC is within the PATH
+  lineinfile:
+    dest: "{{ item.dest }}"
+    line: "{{ item.line }}"
+    create: "true"
+  with_items:
+    - { dest: "/etc/profile.d/lxc-path.sh", line: "pathmunge /opt/lxc_embedded/bin" }
+  tags:
+    - lxc-source
+    - lxc-path
+
+- name: Remove sub system lock if found
+  file:
+    path: "{{ item }}"
+    state: "absent"
+    owner: "root"
+    group: "root"
+  with_items:
+    - /var/lock/subsys/lxc
+  tags:
+    - lxc-directories
+
+- name: Drop post up script
+  copy:
+    content: |
+      #!/usr/bin/env bash
+      if [ "${DEVICE}" == "{{ lxc_net_bridge }}" ];then
+        if [ "{{ lxc_net_nat }}" == "True" ];then
+          /usr/local/bin/lxc-system-manage iptables-create
+          /usr/local/bin/lxc-system-manage dnsmasq-start || true
+        fi
+      fi
+    dest: "/etc/sysconfig/network-scripts/ifup-post-{{ lxc_net_bridge }}"
+    owner: "root"
+    group: "root"
+    mode: "0755"
+  tags:
+    - lxc-post-up
+
+- name: Drop post down script
+  copy:
+    content: |
+      #!/usr/bin/env bash
+      if [ "${DEVICE}" == "{{ lxc_net_bridge }}" ];then
+        if [ "{{ lxc_net_nat }}" == "True" ];then
+          /usr/local/bin/lxc-system-manage dnsmasq-stop
+          /usr/local/bin/lxc-system-manage iptables-remove
+        fi
+      fi
+    dest: "/etc/sysconfig/network-scripts/ifdown-post-{{ lxc_net_bridge }}"
+    owner: "root"
+    group: "root"
+    mode: "0755"
+  tags:
+    - lxc-post-down
+
+- name: Create networking post-up data
+  lineinfile:
+    dest: "{{ item.dest }}"
+    line: "{{ item.line }}"
+    insertbefore: "^exit\ 0$"
+  with_items:
+    - dest: "/etc/sysconfig/network-scripts/ifup-post"
+      line: ". /etc/sysconfig/network-scripts/ifup-post-{{ lxc_net_bridge }}"
+  tags:
+    - lxc-post-up
+
+- name: Create networking post-down data
+  lineinfile:
+    dest: "{{ item.dest }}"
+    line: "{{ item.line }}"
+    insertbefore: "^exit\ 0$"
+  with_items:
+    - dest: "/etc/sysconfig/network-scripts/ifdown-post"
+      line: ". /etc/sysconfig/network-scripts/ifdown-post-{{ lxc_net_bridge }}"
+  tags:
+    - lxc-post-down
+
+- name: Link embedded lxc to python3
+  shell: >
+    find /opt/lxc_embedded/lib64/python3.4/site-packages/* -maxdepth 0 | xargs -n1 ln -sf
+  args:
+    chdir: /usr/lib64/python3.4
+  tags:
+    - lxc-links
+
+- name: Run ldconfig to make sure all libs are linked
+  command: ldconfig -v
+  tags:
+    - lxc-links
+
+# This is needed because Ansible will not read an exported PATH and the default path is too restrictive
+- name: Update the sudoers defaults
+  lineinfile:
+    dest: /etc/sudoers
+    state: present
+    regexp: '{{ item.regexp }}'
+    line: '{{ item.line }}'
+    validate: 'visudo -cf %s'
+  with_items:
+    - regexp: '^Defaults.*env_reset.*'
+      line: 'Defaults env_reset'
+    - regexp: '^Defaults.*secure_path.*'
+      line: 'Defaults secure_path="/opt/lxc_embedded/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"'
+  tags:
+    - lxc-path

tasks/lxc_net.yml

@@ -13,27 +13,79 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+- name: Drop lxc net bridge
+  template:
+    src: "{{ item.src }}"
+    dest: "{{ item.dest }}"
+    owner: "root"
+    group: "root"
+    mode: "0644"
+  with_items: "{{ lxc_cached_network_interfaces }}"
+  notify:
+    - Bring bridge up
+  tags:
+    - lxc-files
+    - lxc-net
+    - lxc-bridge
+    - lxc-interfaces
+
+# All Debian installations of LXC use the lxc-net service. This service breaks our network
+#  model and needs to be disabled
+- name: Disable and stop lxc-net
+  service:
+    name: lxc-net
+    enabled: no
+    state: stopped
+  when:
+    - ansible_os_family == "Debian"
+  tags:
+    - lxc-net
+
+# All installations of LXC on init based systems (upstart primarily) will need to have the
+#  the lxc-net service override in place to ensure its not restarted on system boot
+- name: Drop lxc-net override file for upstart
+  template:
+    src: manual-init.override.j2
+    dest: /etc/init/lxc-net.override
+    owner: root
+    group: root
+    mode: 0644
+  when:
+    - pid1_name == "init"
+  tags:
+    - lxc-files
+    - lxc-net
+
+# All Debian based systems use the interfaces.d directory for extra network configs
+#  this check ensures the needed source line is in the base config file
 - name: Ensure networking includes interfaces.d
   lineinfile:
     dest: "/etc/network/interfaces"
     line: "source /etc/network/interfaces.d/*.cfg"
     backup: "yes"
+  when:
+    - ansible_os_family == "Debian"
   tags:
     - lxc-net
     - lxc-interfaces
 
-- name: Drop lxc net bridge
+- name: Drop lxc net bridge - Debian
   template:
     src: "lxc-net-bridge.cfg.j2"
     dest: "/etc/network/interfaces.d/lxc-net-bridge.cfg"
     owner: "root"
     group: "root"
     mode: "0644"
+  when:
+    - ansible_os_family == "Debian"
+  notify:
+    - Restart bridge
   tags:
     - lxc-files
     - lxc-net
     - lxc-bridge
 
+# Check that the container bridge exists, if not bring it up
 - name: Check Container Bridge exists
   file:
     state: "file"
@@ -44,5 +96,7 @@
   notify:
     - Bring bridge up
   tags:
-    - lxc-net
     - lxc-bridge
+
+# Ensure lxc networks are running as they're supposed to
+- meta: flush_handlers

tasks/lxc_post_install.yml

@@ -32,38 +32,23 @@
     mode: "{{ item.mode|default('0644') }}"
   with_items:
     - { src: lxc-openstack.conf.j2, dest: "/etc/lxc/lxc-openstack.conf" }
+    - { src: default.conf.j2, dest: "/etc/lxc/default.conf" }
     - { src: lxc.default.j2, dest: "/etc/default/lxc-net", mode: "0644" }
     - { src: lxc-system-manage.j2, dest: "/usr/local/bin/lxc-system-manage", mode: "0755" }
   tags:
     - lxc-files
     - lxc-config
 
-- name: Drop irqbalance config
-  template:
-    src: "irqbalance.j2"
-    dest: "/etc/default/irqbalance"
+- name: Drop lxc veth check script
+  copy:
+    src: "lxc-veth-check.sh"
+    dest: "/usr/local/bin/lxc-veth-check"
     owner: "root"
     group: "root"
-    mode: "0644"
-  notify:
-    - Restart irqbalance
+    mode: "0755"
   tags:
     - lxc-files
-    - lxc-irqbalance
-
-- name: Drop lxc-openstack app armor profile
-  template:
-    src: "lxc-openstack.apparmor.j2"
-    dest: "/etc/apparmor.d/lxc/lxc-openstack"
-    owner: "root"
-    group: "root"
-    mode: "0644"
-  notify:
-    - Load lxc-openstack apparmor profile
-    - Restart apparmor
-  tags:
-    - lxc-files
-    - lxc-apparmor
+    - lxc-config
 
 # Ensure apparmor reindex runs before other things that may fail
 - meta: flush_handlers

tasks/lxc_pre_install.yml

@@ -32,14 +32,3 @@
     - "{{ lxc_container_cache_path }}"
   tags:
     - lxc-directories
-
-- name: Drop lxc-net override file
-  template:
-    src: manual-init.override.j2
-    dest: /etc/init/lxc-net.override
-    owner: root
-    group: root
-    mode: 0644
-  tags:
-    - lxc-files
-    - lxc-config

tasks/main.yml

@@ -35,10 +35,23 @@
   with_first_found:
     - "{{ ansible_distribution | lower }}-{{ ansible_distribution_version | lower }}.yml"
     - "{{ ansible_distribution | lower }}.yml"
+    - "{{ ansible_os_family | lower }}-{{ ansible_distribution_version.split('.')[0] }}.yml"
     - "{{ ansible_os_family | lower }}.yml"
   tags:
     - always
 
+- name: Check init system
+  command: cat /proc/1/comm
+  register: _pid1_name
+  tags:
+    - always
+
+- name: Set the name of pid1
+  set_fact:
+    pid1_name: "{{ _pid1_name.stdout }}"
+  tags:
+    - always
+
 - include: lxc_pre_install.yml
 - include: lxc_install.yml
 - include: lxc_post_install.yml
@@ -46,7 +59,6 @@
 - include: lxc_net.yml
 - include: lxc_dnsmasq_cleanup.yml
 - include: lxc_cache.yml
-- include: lxc_cache_preparation.yml
-  when: lxc_container_caches is defined
+
 - name: Flush handlers
   meta: flush_handlers

templates/default.conf.j2

@@ -0,0 +1,5 @@
+lxc.network.type = {{ lxc_container_net_type }}
+lxc.network.name = {{ lxc_container_net_name }}
+lxc.network.link = {{ lxc_container_net_link }}
+lxc.network.flags = up
+lxc.network.hwaddr = 00:16:3e:xx:xx:xx

templates/lxc-net-ifcfg-bridge.cfg.j2

@@ -0,0 +1,17 @@
+# {{ ansible_managed }}
+
+DEVICE={{ lxc_net_bridge }}
+TYPE=Bridge
+IPADDR={{ lxc_net_address }}
+NETMASK={{ lxc_net_netmask }}
+{% if lxc_net_gateway is not none %}
+GATEWAY={{ lxc_net_gateway }}
+{% endif %}
+{% if lxc_net_mtu is defined %}
+MTU={{ lxc_net_mtu }}
+{% endif %}
+ONBOOT=yes
+BOOTPROTO=none
+NM_CONTROLLED=no
+DELAY=0
+STP=no

templates/lxc-resolve-base.j2

@@ -1,3 +0,0 @@
-{% for item in lxc_cache_resolvers %}
-{{ item }}
-{% endfor %}

templates/sources.list.j2

@@ -1,5 +0,0 @@
-# {{ ansible_managed }}
-deb {{ lxc_container_template_main_apt_repo }} {{ lxc_container_release }} {{ lxc_container_template_apt_components | join(" ") }}
-deb {{ lxc_container_template_main_apt_repo }} {{ lxc_container_release }}-updates {{ lxc_container_template_apt_components | join(" ") }}
-deb {{ lxc_container_template_main_apt_repo }} {{ lxc_container_release }}-backports {{ lxc_container_template_apt_components | join(" ") }}
-deb {{ lxc_container_template_security_apt_repo }} {{ lxc_container_release }}-security {{ lxc_container_template_apt_components | join(" ") }}

tests/files/expected-lxc-net-bridge.cfg

@@ -1,15 +0,0 @@
-auto lxcbr0
-iface lxcbr0 inet static
-    address 10.100.100.1
-    netmask 255.255.255.0
-    # dnsmasq start and stop
-    post-up /usr/local/bin/lxc-system-manage iptables-create
-    post-up /usr/local/bin/lxc-system-manage dnsmasq-start || true
-    post-down /usr/local/bin/lxc-system-manage iptables-remove
-    post-down /usr/local/bin/lxc-system-manage dnsmasq-stop
-    bridge_fd 0
-    bridge_maxwait 0
-    bridge_ports none
-    bridge_hello 2
-    bridge_maxage 12
-    bridge_stp off

tests/test.yml

@@ -17,9 +17,14 @@
   hosts: localhost
   connection: local
   pre_tasks:
+    - name: Show host facts
+      debug:
+        var: hostvars
     - name: First ensure apt cache is always refreshed
       apt:
         update_cache: yes
+      when:
+        - ansible_pkg_mgr == 'apt'
     - name: Ensure root ssh key
       user:
         name: "{{ ansible_env.USER | default('root') }}"
@@ -46,43 +51,34 @@
         - src: files/container-file-copy-test.txt
           dest: /tmp/file-copied-from-deployment-host.txt
   post_tasks:
-    - name: Open sysctl file
-      slurp:
-        src: /etc/sysctl.conf
-      register: sysctl_file
-    - name: Read files
-      set_fact:
-        sysctl_content: "{{ sysctl_file.content | b64decode }}"
-    - name: Check for container tar
-      stat:
-        path: /var/cache/lxc_trusty.tgz
-      register: container_tar_file
-    - name: Check for container cache dir
-      stat:
-        path: /var/cache/lxc/trusty/rootfs-amd64/
-      register: container_cache_dir
+    - name: Get sysctl content
+      shell: |
+        cat /etc/sysctl.conf
+      register: sysctl_content
     - name: Check for lxc bridge
       stat:
         path: /sys/class/net/lxcbr0/bridge/bridge_id
       register: lxc_bridge_file
     - name: Check dnsmasq is running
       shell: ps auxfww | grep -w 'dnsmasq -u lxc-dnsmasq'
-    - name: Get deployed interface file contents, without Ansible managed line
+    - name: DEBIAN - Get deployed interface file contents, without Ansible managed line
       shell: |
         cat /etc/network/interfaces.d/lxc-net-bridge.cfg | tail -n +3
-      register: interface_file
-    - name: Get expected interface file contents
+      register: _debian_interface_file
+      when: ansible_os_family | lower == "debian"
+    - name: DEBIAN - interface file fact
+      set_fact:
+        interface_file: "{{ _debian_interface_file.stdout }}"
+      when: ansible_os_family | lower == "debian"
+    - name: RHEL - Get deployed interface file contents, without Ansible managed line
       shell: |
-        cat files/expected-lxc-net-bridge.cfg
-      register: expected_interface_file
-    - name: Get the deployed test file from the container cache
-      slurp:
-        src: /var/cache/lxc/trusty/rootfs-amd64/tmp/file-copied-from-deployment-host.txt
-      register: copied_file
-    - name: Get the expected test file which should have been copied
-      slurp:
-        src: files/container-file-copy-test.txt
-      register: expected_copied_file
+        cat /etc/sysconfig/network-scripts/ifcfg-lxcbr0 | tail -n +3
+      register: _rhel_interface_file
+      when: ansible_os_family | lower == "redhat"
+    - name: RHEL - interface file fact
+      set_fact:
+        interface_file: "{{ _rhel_interface_file.stdout }}"
+      when: ansible_os_family | lower == "redhat"
     - name: Get bridge interface facts
       setup:
         filter: ansible_lxcbr0
@@ -90,10 +86,9 @@
     - name: Check role functions
       assert:
         that:
-          - "'fs.inotify.max_user_instances' in sysctl_content"
+          - interface_file | search('.*lxcbr0.*')
+          - interface_file | search('.*10.100.100.1.*')
+          - interface_file | search('.*255.255.255.0.*')
+          - sysctl_content.stdout | search('fs.inotify.max_user_instances.*')
           - "lxc_bridge_file.stat.exists"
-          - "container_cache_dir.stat.isdir"
-          - "container_tar_file.stat.exists"
-          - "interface_file.stdout | match(expected_interface_file.stdout)"
-          - "copied_file.content | match(expected_copied_file.content)"
           - "lxcbr0_facts.ansible_facts.ansible_lxcbr0.ipv4.address | match('10.100.100.1')"

vars/redhat-7.yml

@@ -0,0 +1,70 @@
+---
+# Copyright 2016, Rackspace US, Inc.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+lxc_download_url: "https://linuxcontainers.org/downloads/lxc/lxc-1.0.8.tar.gz"
+
+# Required rpm packages.
+lxc_packages:
+  - '@Development Tools'
+  - automake
+  - autoconf
+  - bridge-utils
+  - debootstrap
+  - docbook2X
+  - dnsmasq
+  - git
+  - libseccomp
+  - libseccomp-devel
+  - libcap-devel
+  - libselinux
+  - libselinux-devel
+  - python-devel
+  - python34-libs
+  - python34-devel
+  - pkgconfig
+  - redhat-lsb
+  - xz
+
+lxc_cache_map:
+  distro: centos
+  arch: amd64
+  release: 7
+  cache_packages:
+    - openssh-server
+    - sudo
+  repos: {}
+  cache_base_commands: |
+    rm /etc/resolv.conf
+    {% for resolver in lxc_cache_resolvers %}
+    echo "{{ resolver }}" | tee -a /etc/resolv.conf
+    {% endfor %}
+    {{ lxc_cache_install_command }} wget python2
+    rm -f /usr/bin/python
+    ln -s /usr/bin/python2.7 /usr/bin/python
+    /usr/bin/wget https://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm -O /tmp/epel-release-latest-7.noarch.rpm
+    /usr/bin/rpm -ivh /tmp/epel-release-latest-7.noarch.rpm || true
+  cache_post_commands: |
+    yum clean all
+
+lxc_cache_install_command: "yum install -y"
+
+pip_install_options: >
+  --global-option=build_ext
+  --global-option="-L/opt/lxc_embedded/x86_64-linux-gnu/"
+  --global-option="-I/opt/lxc_embedded/include/"
+
+lxc_cached_network_interfaces:
+  - src: "lxc-net-ifcfg-bridge.cfg.j2"
+    dest: "/etc/sysconfig/network-scripts/ifcfg-lxcbr0"

vars/ubuntu-14.04.yml

@@ -18,17 +18,13 @@ cache_timeout: 600
 
 # Container repos
 lxc_container_template_main_apt_repo: "https://mirror.rackspace.com/ubuntu"
-lxc_container_template_security_apt_repo: "https://mirror.rackspace.com/ubuntu"
+lxc_container_template_security_apt_repo: "{{ lxc_container_template_main_apt_repo }}"
 lxc_container_template_apt_components:
   - main
   - universe
 
-# Default image to build from
-lxc_container_release: trusty
-lxc_container_user_name: ubuntu
-
 # Required apt packages.
-lxc_apt_packages:
+lxc_packages:
   - apparmor
   - apparmor-utils
   - bridge-utils
@@ -45,11 +41,91 @@ lxc_apt_packages:
   - lxc-templates
   - python-dev
   - python3-lxc
+  - pxz
 
-# Commands to run against cached LXC image
-lxc_cache_commands:
-  - apt-get update
-  - apt-get -y upgrade
-  - apt-get -y install python2.7
-  - rm -f /usr/bin/python
-  - ln -s /usr/bin/python2.7 /usr/bin/python
+lxc_cache_map:
+  distro: ubuntu
+  arch: amd64
+  release: trusty
+  cache_packages:
+    - bridge-utils
+    - bsdmainutils
+    - build-essential
+    - cgmanager
+    - cgmanager-utils
+    - cgroup-lite
+    - comerr-dev
+    - curl
+    - debconf-utils
+    - debhelper
+    - dh-apparmor
+    - gettext
+    - gir1.2-glib-2.0
+    - git
+    - groff-base
+    - intltool-debian
+    - iptables
+    - iso-codes
+    - krb5-multidev
+    - libcgmanager-dev
+    - libdbus-1-dev
+    - libdbus-glib-1-2
+    - libdevmapper-event1.02.1
+    - libexpat1-dev
+    - libffi-dev
+    - libpq-dev
+    - libpq5
+    - libpython-dev
+    - libxml2-dev
+    - libxslt1-dev
+    - libxslt1.1
+    - lvm2
+    - openssh-server
+    - python-apt
+    - python-apt-common
+    - python-dev
+    - python-pycurl
+    - python-software-properties
+    - python3-apt
+    - python3-dbus
+    - python3-gi
+    - python3-minimal
+    - python3-pycurl
+    - python3-software-properties
+    - software-properties-common
+    - sqlite3
+    - ssh
+    - sshpass
+    - time
+  repos:
+    "/etc/apt/sources.list": |
+      deb {{ lxc_container_template_main_apt_repo }} trusty {{ lxc_container_template_apt_components | join(' ') }}
+      deb {{ lxc_container_template_main_apt_repo }} trusty-updates {{ lxc_container_template_apt_components | join(' ') }}
+      deb {{ lxc_container_template_main_apt_repo }} trusty-backports {{ lxc_container_template_apt_components | join(' ') }}
+      deb {{ lxc_container_template_security_apt_repo }} trusty-security {{ lxc_container_template_apt_components | join(' ') }}
+  cache_base_commands: |
+    rm /run/resolvconf/resolv.conf
+    # This enforces the resolvers from within the image
+    {% for resolver in lxc_cache_resolvers %}
+    echo "{{ resolver }}" | tee -a /run/resolvconf/resolv.conf
+    {% endfor %}
+    cp /run/resolvconf/resolv.conf /etc/resolvconf/resolv.conf.d/base
+    echo "# NONE" > /etc/resolvconf/resolv.conf.d/tail
+    echo "# NONE" > /etc/resolvconf/resolv.conf.d/original
+    # This is done because its possible the base repos being installed will use https
+    #  and ansible needs access to python2.7 which the system may not have by default
+    {{ lxc_cache_install_command }} apt-transport-https python2.7
+    apt-get -y upgrade
+    rm -f /usr/bin/python
+    ln -s /usr/bin/python2.7 /usr/bin/python
+    mkdir -p /root/.ssh
+    chmod 700 /root/.ssh
+    userdel --force --remove ubuntu || true
+  cache_post_commands: |
+    apt-get clean
+
+lxc_cache_install_command: "export DEBIAN_FRONTEND=noninteractive && apt-get update && apt-get install -y"
+
+lxc_cached_network_interfaces:
+  - src: "lxc-net-bridge.cfg.j2"
+    dest: "/etc/network/interfaces.d/lxc-net-bridge.cfg"

vars/ubuntu-16.04.yml

@@ -0,0 +1,84 @@
+---
+# Copyright 2016, Rackspace US, Inc.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+## APT Cache Options
+cache_timeout: 600
+
+# Container repos
+lxc_container_template_main_apt_repo: "https://mirror.rackspace.com/ubuntu"
+lxc_container_template_security_apt_repo: "{{ lxc_container_template_main_apt_repo }}"
+
+lxc_container_template_apt_components:
+  - main
+  - universe
+
+# Required apt packages.
+lxc_packages:
+  - apparmor
+  - apparmor-utils
+  - bridge-utils
+  - cgmanager
+  - cgroup-lite
+  - debootstrap
+  - dnsmasq
+  - git
+  - irqbalance
+  - language-pack-en
+  - liblxc1
+  - lxc
+  - lxc-dev
+  - lxc-templates
+  - python-dev
+  - python3-lxc
+  - pxz
+
+lxc_cache_map:
+  distro: ubuntu
+  arch: amd64
+  release: xenial
+  cache_packages:
+    - openssh-server
+  repos:
+    "/etc/apt/sources.list": |
+      deb {{ lxc_container_template_main_apt_repo }} xenial {{ lxc_container_template_apt_components | join(' ') }}
+      deb {{ lxc_container_template_main_apt_repo }} xenial-updates {{ lxc_container_template_apt_components | join(' ') }}
+      deb {{ lxc_container_template_main_apt_repo }} xenial-backports {{ lxc_container_template_apt_components | join(' ') }}
+      deb {{ lxc_container_template_security_apt_repo }} xenial-security {{ lxc_container_template_apt_components | join(' ') }}
+  cache_base_commands: |
+    rm /run/resolvconf/resolv.conf
+    # This enforces the resolvers from within the image
+    {% for resolver in lxc_cache_resolvers %}
+    echo "{{ resolver }}" | tee -a /run/resolvconf/resolv.conf
+    {% endfor %}
+    cp /run/resolvconf/resolv.conf /etc/resolvconf/resolv.conf.d/base
+    echo "# NONE" > /etc/resolvconf/resolv.conf.d/tail
+    echo "# NONE" > /etc/resolvconf/resolv.conf.d/original
+    # This is done because its possible the base repos being installed will use https
+    #  and ansible needs access to python2.7 which the system may not have by default
+    {{ lxc_cache_install_command }} apt-transport-https python2.7
+    apt-get -y upgrade
+    rm -f /usr/bin/python
+    ln -s /usr/bin/python2.7 /usr/bin/python
+    mkdir -p /root/.ssh
+    chmod 700 /root/.ssh
+    userdel --force --remove ubuntu || true
+  cache_post_commands: |
+    apt-get clean
+
+lxc_cache_install_command: "export DEBIAN_FRONTEND=noninteractive && apt-get update && apt-get install -y"
+
+lxc_cached_network_interfaces:
+  - src: "lxc-net-bridge.cfg.j2"
+    dest: "/etc/network/interfaces.d/lxc-net-bridge.cfg"