Implement Ubuntu 16.04 support with SystemD

This change updates the aodh role to support Ubuntu 14.04 with
upstart init and 16.04 with a systemd init.

Some tags for tasks are updated to conform to convention as well.

Change-Id: Ice81e049475b31559c861c0d20bcd26867da321c
Implements: blueprint support-ubuntu-1604

meta/main.yml

@@ -23,6 +23,7 @@ galaxy_info:
     - name: Ubuntu
       versions:
         - trusty
+        - xenial
   categories:
     - cloud
     - python

releasenotes/notes/add-xenial-support-5c117335b7b7b407.yaml

@@ -0,0 +1,3 @@
+---
+feature:
+  - Support has been added to deploy Aodh services for Ubuntu 16.04 LTS.

tasks/aodh_init.yml

@@ -0,0 +1,58 @@
+---
+# 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.
+
+- include: aodh_init_common.yml
+  vars:
+    program_name: "{{ aodh_alarm_notifier_program_name }}"
+    service_name: "{{ aodh_service_name }}"
+    system_user: "{{ aodh_system_user_name }}"
+    system_group: "{{ aodh_system_group_name }}"
+    service_home: "{{ aodh_system_user_home }}"
+  when: inventory_hostname in groups['aodh_alarm_notifier']
+  tags:
+    - aodh-notifier-init
+
+- include: aodh_init_common.yml
+  vars:
+    program_name: "{{ aodh_alarm_evaluator_program_name }}"
+    service_name: "{{ aodh_service_name }}"
+    system_user: "{{ aodh_system_user_name }}"
+    system_group: "{{ aodh_system_group_name }}"
+    service_home: "{{ aodh_system_user_home }}"
+  when: inventory_hostname in groups['aodh_alarm_evaluator']
+  tags:
+    - aodh-evaluator-init
+
+- include: aodh_init_common.yml
+  vars:
+    program_name: "{{ aodh_api_program_name }}"
+    service_name: "{{ aodh_service_name }}"
+    system_user: "{{ aodh_system_user_name }}"
+    system_group: "{{ aodh_system_group_name }}"
+    service_home: "{{ aodh_system_user_home }}"
+  when: inventory_hostname in groups['aodh_api']
+  tags:
+    - aodh-api-init
+
+- include: aodh_init_common.yml
+  vars:
+    program_name: "{{ aodh_listener_program_name }}"
+    service_name: "{{ aodh_service_name }}"
+    system_user: "{{ aodh_system_user_name }}"
+    system_group: "{{ aodh_system_group_name }}"
+    service_home: "{{ aodh_system_user_home }}"
+  when: inventory_hostname in groups['aodh_listener']
+  tags:
+    - aodh-listener-init

tasks/aodh_init_common.yml

@@ -0,0 +1,31 @@
+---
+# 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.
+
+- include: aodh_init_upstart.yml
+  when: pid1_name == "init"
+  tags:
+    - aodh-init
+
+- include: aodh_init_systemd.yml
+  when: pid1_name == "systemd"
+  tags:
+    - aodh-init
+
+- name: Load service
+  service:
+   name: "{{ program_name }}"
+   enabled: "yes"
+  notify:
+    - Restart aodh services

tasks/aodh_init_systemd.yml

@@ -0,0 +1,48 @@
+---
+# 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 aodh TEMP dirs
+  file:
+    path: "{{ item.path }}/{{ program_name }}"
+    state: directory
+    owner: "{{ system_user }}"
+    group: "{{ system_group }}"
+    mode: "2755"
+  with_items:
+    - { path: "/var/run" }
+    - { path: "/var/lock" }
+
+- name: Create tempfile.d entry
+  template:
+    src: "aodh-systemd-tempfiles.j2"
+    dest: "/etc/tmpfiles.d/aodh.conf"
+    mode: "0644"
+    owner: "root"
+    group: "root"
+
+- name: Place the systemd init script
+  template:
+    src: "aodh-systemd-init.j2"
+    dest: "/etc/systemd/system/{{ program_name }}.service"
+    mode: "0644"
+    owner: "root"
+    group: "root"
+  register: systemd_init
+
+- name: Reload the systemd daemon
+  command: "systemctl daemon-reload"
+  when: systemd_init | changed
+  notify:
+    - Restart aodh services

tasks/aodh_init_upstart.yml

@@ -20,6 +20,7 @@
     mode: "0644"
     owner: "root"
     group: "root"
+  register: upstart_init
   notify:
     - Restart aodh services
   tags:
@@ -29,6 +30,7 @@
 - name: Reload init scripts
   shell: |
     initctl reload-configuration
+  register: upstart_init
   notify:
     - Restart aodh services
   tags:

tasks/main.yml

@@ -21,6 +21,18 @@
   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
+
 - name: Gather variables for each operating system
   include_vars: "{{ item }}"
   with_first_found:
@@ -33,14 +45,30 @@
     - always
 
 - include: aodh_pre_install.yml
+  tags:
+    - aodh-install
+
 - include: aodh_install.yml
+  tags:
+    - aodh-install
+    - aodh-config
+
 - include: aodh_post_install.yml
-- include: aodh_upstart_init.yml
+  tags:
+    - aodh-install
+
+- include: aodh_init.yml
+  tags:
+    - aodh-install
 
 - include: aodh_db_setup.yml
   when: >
     inventory_hostname == groups['aodh_all'][0]
+  tags:
+    - aodh-install
 
 - include: aodh_service_setup.yml
   when: >
     inventory_hostname == groups['aodh_api'][0]
+  tags:
+    - aodh-install

templates/aodh-systemd-init.j2

@@ -0,0 +1,25 @@
+# {{ ansible_managed }}
+
+[Unit]
+Description=aodh openstack service
+After=syslog.target
+After=network.target
+
+[Service]
+Type=simple
+User={{ system_user }}
+Group={{ system_group }}
+
+{% if program_override is defined %}
+ExecStart={{ program_override }} {{ program_config_options|default('') }} --log-file=/var/log/aodh/{{ program_name }}.log
+{% else %}
+ExecStart={{ aodh_bin }}/{{ program_name }} {{ program_config_options|default('') }} --log-file=/var/log/aodh/{{ program_name }}.log
+{% endif %}
+
+# Give a reasonable amount of time for the server to start up/shut down
+TimeoutSec=300
+Restart=on-failure
+RestartSec=150
+
+[Install]
+WantedBy=multi-user.target

templates/aodh-systemd-tempfiles.j2

@@ -0,0 +1,4 @@
+# {{ ansible_managed }}
+
+D /var/lock/{{ program_name }} 2755 {{ system_user }} {{ system_group }}
+D /var/run/{{ program_name }} 2755 {{ system_user }} {{ system_group }}