Add support for using distribution packages for OpenStack services

Distributions provide packages for the OpenStack services so we add
support for using these instead of the pip ones.

Change-Id: I7eb1cbe2c80ee889d2ae08dcfed6a19cc1bd3415
Depends-On: Ide70b5d8f67d8c8a87e3f16671f0f7fb72338b89
Depends-On: I8de48eb1fb4c8d321098ca54b9e21270edc7ac87
Depends-On: Ia5fda5d417b79189d048c8891b84d57331df1404
Implements: blueprint openstack-distribution-packages

defaults/main.yml

@@ -22,6 +22,9 @@ debug: False
 octavia_service_setup_host: "{{ openstack_service_setup_host | default('localhost') }}"
 octavia_service_setup_host_python_interpreter: "{{ openstack_service_setup_host_python_interpreter | default((octavia_service_setup_host == 'localhost') | ternary(ansible_playbook_python, ansible_python['executable'])) }}"
 
+# Set installation method.
+octavia_install_method: "source"
+
 ## Octavia standalone (v2)
 octavia_v2: True
 
@@ -54,7 +57,7 @@ octavia_pip_install_args: "{{ pip_install_options | default('') }}"
 
 # Name of the virtual env to deploy into
 octavia_venv_tag: "{{ venv_tag | default('untagged') }}"
-octavia_bin: "/openstack/venvs/octavia-{{ octavia_venv_tag }}/bin"
+octavia_bin: "{{ _octavia_bin }}"
 
 octavia_clients_endpoint: internalURL
 
@@ -177,14 +180,14 @@ octavia_services:
     service_name: octavia-api
     start_order: 4
     init_config_overrides: "{{ octavia_api_init_overrides }}"
-    execstarts: "{{ octavia_bin }}/uwsgi --ini /etc/uwsgi/octavia-api.ini"
-    execreloads: "{{ octavia_bin }}/uwsgi --reload /var/run/octavia-api/octavia-api.pid"
+    execstarts: "{{ octavia_uwsgi_bin }}/uwsgi --ini /etc/uwsgi/octavia-api.ini"
+    execreloads: "{{ octavia_uwsgi_bin }}/uwsgi --reload /var/run/octavia-api/octavia-api.pid"
     wsgi_overrides: "{{ octavia_api_uwsgi_ini_overrides }}"
     wsgi_app: True
     wsgi_name: octavia-wsgi
     uwsgi_port: "{{ octavia_service_port }}"
     uwsgi_bind_address: "{{ octavia_uwsgi_bind_address }}"
-    program_override: "{{ octavia_bin }}/uwsgi --ini /etc/uwsgi/octavia-api.ini"
+    program_override: "{{ octavia_uwsgi_bin }}/uwsgi --ini /etc/uwsgi/octavia-api.ini"
   octavia-worker:
     group: octavia-worker
     service_name: octavia-worker

releasenotes/notes/openstack-distribution-packages-bc0d1d606a362ffc.yaml

@@ -0,0 +1,7 @@
+---
+features:
+  - |
+    The role now supports using the distribution packages for the OpenStack
+    services instead of the pip ones. This feature is disabled by default
+    and can be enabled by simply setting the ``octavia_install_method``
+    variable to ``distro``.

tasks/main.yml

@@ -13,6 +13,16 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+- name: Fail if service was deployed using a different installation method
+  fail:
+    msg: "Switching installation methods for OpenStack services is not supported"
+  when:
+    - ansible_local is defined
+    - ansible_local.openstack_ansible is defined
+    - ansible_local.openstack_ansible.octavia is defined
+    - ansible_local.openstack_ansible.octavia.install_method is defined
+    - ansible_local.openstack_ansible.octavia.install_method != octavia_install_method
+
 - name: Gather variables for each operating system
   include_vars: "{{ item }}"
   with_first_found:
@@ -38,24 +48,16 @@
   tags:
     - octavia-config
 
+- name: Gather variables for installation method
+  include_vars: "{{ octavia_install_method }}_install.yml"
+  tags:
+    - always
+
 - include_tasks: octavia_pre_install.yml
   tags:
     - octavia-install
 
-- name: Install the python venv
-  import_role:
-    name: "python_venv_build"
-  vars:
-    venv_build_constraints: "{{ octavia_git_constraints }}"
-    venv_install_destination_path: "{{ octavia_bin | dirname }}"
-    venv_install_distro_package_list: "{{ octavia_distro_packages }}"
-    venv_pip_install_args: "{{ octavia_pip_install_args }}"
-    venv_pip_packages: "{{ octavia_pip_packages | union(octavia_user_pip_packages) +
-    (octavia_oslomsg_amqp1_enabled | bool) | ternary(octavia_optional_oslomsg_amqp1_pip_packages, []) }}"
-    venv_facts_when_changed:
-      - section: "octavia"
-        option: "venv_tag"
-        value: "{{ octavia_venv_tag }}"
+- include_tasks: octavia_install.yml
   tags:
     - octavia-install
 

tasks/octavia_install.yml

@@ -0,0 +1,42 @@
+---
+
+- name: Record the installation method
+  ini_file:
+    dest: "/etc/ansible/facts.d/openstack_ansible.fact"
+    section: "octavia"
+    option: "install_method"
+    value: "{{ octavia_install_method }}"
+
+- name: Refresh local facts to ensure the octavia section is present
+  setup:
+    filter: ansible_local
+    gather_subset: "!all"
+
+- name: Install distro packages
+  package:
+    name: "{{ octavia_package_list }}"
+    state: "{{ octavia_package_state }}"
+    update_cache: "{{ (ansible_pkg_mgr in ['apt', 'zypper']) | ternary('yes', omit) }}"
+    cache_valid_time: "{{ (ansible_pkg_mgr == 'apt') | ternary(cache_timeout, omit) }}"
+  register: install_packages
+  until: install_packages is success
+  retries: 5
+  delay: 2
+
+- name: Install the python venv
+  import_role:
+    name: "python_venv_build"
+  vars:
+    venv_build_constraints: "{{ octavia_git_constraints }}"
+    venv_install_destination_path: "{{ octavia_bin | dirname }}"
+    venv_install_distro_package_list: "{{ octavia_distro_packages }}"
+    venv_pip_install_args: "{{ octavia_pip_install_args }}"
+    venv_pip_packages: "{{ octavia_pip_packages | union(octavia_user_pip_packages) +
+    (octavia_oslomsg_amqp1_enabled | bool) | ternary(octavia_optional_oslomsg_amqp1_pip_packages, []) }}"
+    venv_facts_when_changed:
+      - section: "octavia"
+        option: "venv_tag"
+        value: "{{ octavia_venv_tag }}"
+  tags:
+    - octavia-install
+  when: octavia_install_method == 'source'

templates/octavia-uwsgi.ini.j2

@@ -2,7 +2,9 @@
 uid = {{ octavia_system_user_name }}
 gid = {{ octavia_system_group_name }}
 
+{% if octavia_install_method == 'source' %}
 virtualenv = /openstack/venvs/octavia-{{ octavia_venv_tag }}
+{% endif %}
 wsgi-file = {{ octavia_bin }}/{{ item.wsgi_name }}
 http-socket = {{ item.uwsgi_bind_address }}:{{ item.uwsgi_port }}
 

tox.ini

@@ -93,6 +93,12 @@ basepython = python3
 commands =
     bash -c "{toxinidir}/tests/common/test-ansible-functional.sh"
 
+[testenv:distro_install]
+setenv =
+    {[testenv]setenv}
+    ANSIBLE_PARAMETERS=-e @{toxinidir}/tests/common/test-distro_install-vars.yml
+commands =
+    bash -c "{toxinidir}/tests/common/test-ansible-functional.sh"
 
 [testenv:linters]
 basepython = python3
@@ -103,4 +109,3 @@ commands =
     {[testenv:ansible-lint]commands}
     {[testenv:ansible-syntax]commands}
     doc8 doc
-

vars/debian.yml

@@ -21,3 +21,15 @@ octavia_distro_packages:
   - iptables-persistent
   - libxml2-dev
   - netfilter-persistent
+
+octavia_service_distro_packages:
+  - octavia-common
+  - octavia-api
+  - octavia-health-manager
+  - octavia-housekeeping
+  - octavia-worker
+  - python-pymysql
+  - uwsgi
+  - uwsgi-plugin-python
+
+octavia_uwsgi_bin: '/usr/bin'

vars/distro_install.yml

@@ -0,0 +1,4 @@
+---
+
+octavia_package_list: "{{ octavia_distro_packages + octavia_service_distro_packages + octavia_distro_openstack_clients_packages }}"
+_octavia_bin: "/usr/bin"

vars/redhat-7.yml

@@ -18,3 +18,23 @@ octavia_distro_packages:
   - iptables-services
   - libxml2-devel
   - git
+
+octavia_service_distro_packages:
+  - openstack-octavia-common
+  - openstack-octavia-api
+  - openstack-octavia-health-manager
+  - openstack-octavia-housekeeping
+  - openstack-octavia-worker
+  - uwsgi
+  - uwsgi-plugin-python
+
+octavia_distro_openstack_clients_packages:
+  - python-shade
+  - python-keystoneclient
+  - python-neutronclient
+  - python-novaclient
+  - python-cinderclient
+  - python-octaviaclient
+  - python-openstackclient
+
+octavia_uwsgi_bin: '/usr/sbin'

vars/source_install.yml

@@ -0,0 +1,5 @@
+---
+
+octavia_package_list: "{{ octavia_distro_packages }}"
+_octavia_bin: "/openstack/venvs/octavia-{{ octavia_venv_tag }}/bin"
+octavia_uwsgi_bin: "{{ _octavia_bin }}"

zuul.d/jobs.yaml

@@ -43,3 +43,30 @@
     vars:
       action: deploy
       scenario: aio_metal_octavia
+
+- job:
+    name: openstack-ansible-deploy-aio_distro_metal_octaviav2-centos-7
+    parent: openstack-ansible-deploy-aio
+    nodeset: centos-7
+    vars:
+      action: deploy
+      scenario: aio_metal_octaviav2
+      install_method: distro
+
+- job:
+    name: openstack-ansible-deploy-aio_distro_metal_octavia-debian-stable
+    parent: openstack-ansible-deploy-aio
+    nodeset: debian-stable
+    vars:
+      action: deploy
+      scenario: aio_metal_octavia
+      install_method: distro
+
+- job:
+    name: openstack-ansible-deploy-aio_distro_metal_octavia-ubuntu-bionic
+    parent: openstack-ansible-deploy-aio
+    nodeset: ubuntu-bionic
+    vars:
+      action: deploy
+      scenario: aio_metal_octavia
+      install_method: distro

zuul.d/project.yaml

@@ -23,6 +23,8 @@
         - openstack-ansible-deploy-aio_metal_octavia-centos-7
         - openstack-ansible-deploy-aio_metal_octavia-debian-stable
         - openstack-ansible-deploy-aio_metal_octavia-ubuntu-bionic
+        - openstack-ansible-deploy-aio_distro_metal_octaviav2-centos-7
+
     experimental:
       jobs:
         - openstack-ansible-deploy-aio_metal_octavia-opensuse-150
@@ -31,3 +33,4 @@
         - openstack-ansible-deploy-aio_metal_octavia-centos-7
         - openstack-ansible-deploy-aio_metal_octavia-debian-stable
         - openstack-ansible-deploy-aio_metal_octavia-ubuntu-bionic
+        - openstack-ansible-deploy-aio_distro_metal_octaviav2-centos-7