Use systemd-journald instead of log files

This patch aims to migrate service from usage of regular syslog files
to journald. We also disable uwsgi logging, since it dublicates
requests that are logged by service itself.

Change-Id: Ib16362a8becb6666f36e5abdb93c548de2a269da

defaults/main.yml

@@ -220,6 +220,7 @@ trove_pip_packages:
   - PyMySQL
   - python-troveclient
   - python-memcached
+  - systemd-python
   - trove
 
 trove_optional_oslomsg_amqp1_pip_packages:

tasks/trove_pre_install.yml

@@ -59,26 +59,3 @@
   when:
     - trove_use_mod_wsgi | bool
     - inventory_hostname in groups['trove_api']
-
-- name: Test for log directory or link
-  shell: |
-    if [ -h "/var/log/trove"  ]; then
-      chown -h {{ trove_system_user_name }}:{{ trove_system_group_name }} "/var/log/trove"
-      chown -R {{ trove_system_user_name }}:{{ trove_system_group_name }} "$(readlink /var/log/trove)"
-    else
-      exit 1
-    fi
-  register: log_dir
-  failed_when: false
-  changed_when: log_dir.rc != 0
-
-- name: Create trove log dir
-  file:
-    path: "{{ item.path }}"
-    state: directory
-    owner: "{{ item.owner|default(trove_system_user_name) }}"
-    group: "{{ item.group|default(trove_system_group_name) }}"
-    mode: "{{ item.mode|default('0755') }}"
-  with_items:
-    - { path: "/var/log/trove" }
-  when: log_dir.rc != 0

templates/trove.conf.j2

@@ -1,6 +1,7 @@
 # {{ ansible_managed }}
 [DEFAULT]
 debug = {{ debug }}
+use_journal = true
 bind_host = {{ trove_service_host }}
 bind_port = {{ trove_service_port }}
 trove_api_workers={{ trove_api_workers }}

vars/debian.yml

@@ -21,4 +21,5 @@ trove_distro_packages:
   - apache2
   - apache2-utils
   - libapache2-mod-wsgi
+  - libsystemd-dev
   - qemu-utils

vars/redhat.yml

@@ -21,4 +21,5 @@ trove_distro_packages:
   - httpd
   - httpd-tools
   - mod_wsgi
+  - systemd-devel
   - qemu-img

vars/suse.yml

@@ -20,4 +20,5 @@ trove_distro_packages:
   - apache2
   - apache2-utils
   - apache2-mod_wsgi
+  - systemd-devel
   - qemu-tools