AppArmor: Handle required profiles for neutron services

The haproxy, dnsmasq and ping processes are being used by the Neutron
services so we need to manage these profiles on the physical host where
these services are located.

Change-Id: Ic79a6b5160baa5232be5eca06b3a4e004aa1f2ed

tasks/neutron_apparmor.yml

@@ -0,0 +1,62 @@
+---
+# Copyright 2018, SUSE LINUX GmbH.
+#
+# 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 required apparmor packages on the physical host
+  package:
+    name: "{{ neutron_apparmor_distro_packages }}"
+    state: present
+  register: apparmor_packages
+  until: apparmor_packages is success
+  retries: 5
+  delay: 2
+  become: yes
+  delegate_to: "{{ physical_host | default('localhost') }}"
+
+- name: Ensure apparmor service is running
+  systemd:
+    name: "apparmor"
+    enabled: yes
+    state: "started"
+  become: yes
+  delegate_to: "{{ physical_host | default('localhost') }}"
+
+- name: "Disable apparmor profile"
+  shell: |
+    # empty line to workaround bug in EnvVarsInCommandRule.py lint test
+    # https://github.com/willthames/ansible-lint/issues/275
+    set -o pipefail
+    exit_code=0
+    if aa-status | grep -q {{ item.process  }} ; then
+       aa-disable {{ item.profile }}
+       if [[ $? == 0 ]]; then
+         exit_code=2
+       fi
+    fi
+    exit ${exit_code}
+  register: _apparmor_profile_disabled
+  changed_when: _apparmor_profile_disabled.rc == 2
+  failed_when: _apparmor_profile_disabled.rc not in [0,2]
+  args:
+    warn: no
+    executable: /bin/bash
+  become: yes
+  delegate_to: "{{ physical_host | default('localhost') }}"
+  with_items:
+    - profile: 'usr.sbin.haproxy'
+      process: 'haproxy'
+    - profile: 'bin.ping'
+      process: 'ping'
+    - profile: 'usr.sbin.dnsmasq'
+      process: 'dnsmasq'

tasks/neutron_install.yml

@@ -74,3 +74,31 @@
     state: started
     enabled: yes
   when: neutron_needs_openvswitch | bool
+
+# NOTE(hwoarang) contains may share the same physical host so we only
+# need to execute the apparmor configuration once per physical host.
+- name: Record the first container on each physical host
+  delegate_to: 'localhost'
+  run_once: True
+  set_fact:
+    neutron_apparmor_hosts: |
+      {%- set apparmor_hosts = [] -%}
+      {%- set physical_hosts = [] -%}
+      {%- for host in groups['all'] -%}
+      {%-   if hostvars[host]['physical_host'] is defined -%}
+      {%-     set phost = hostvars[host]['physical_host'] -%}
+      {%-     if phost not in physical_hosts -%}
+      {%-       set _ = apparmor_hosts.append(host) -%}
+      {%-       set _ = physical_hosts.append(phost) -%}
+      {%-     endif -%}
+      {%-   else -%}
+      {%-     set _ = apparmor_hosts.append('localhost') -%}
+      {%-   endif -%}
+      {%- endfor -%}
+      {{ apparmor_hosts | unique }}
+  when: ansible_pkg_mgr in ['apt', 'zypper']
+
+- include_tasks: neutron_apparmor.yml
+  when:
+    - ansible_pkg_mgr in ['apt', 'zypper']
+    - inventory_hostname in neutron_apparmor_hosts

vars/suse.yml

@@ -42,6 +42,11 @@ neutron_repos:
     auto_import_keys: yes
     priority: 98
 
+neutron_apparmor_distro_packages:
+  - apparmor-parser
+  - apparmor-profiles
+  - apparmor-utils
+
 neutron_distro_packages:
   - conntrack-tools
   - dnsmasq

vars/ubuntu.yml

@@ -40,6 +40,11 @@ neutron_ovs_nsh_required_packages:
 ## APT Cache options
 cache_timeout: 600
 
+neutron_apparmor_distro_packages:
+  - apparmor
+  - apparmor-profiles
+  - apparmor-utils
+
 neutron_distro_packages:
   - conntrack
   - dnsmasq-base