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: I61605b7820bb518fb809b01781f6d83f89487be8

defaults/main.yml

@@ -43,6 +43,7 @@ mistral_pip_packages:
   - mistral
   - PyMySQL
   - python-memcached
+  - systemd-python
   - uwsgi
 mistral_optional_oslomsg_amqp1_pip_packages:
   - oslo.messaging[amqp1]

tasks/mistral_install.yml

@@ -56,8 +56,6 @@
     - path: "/etc/mistral"
       mode: "0750"
     - path: "{{ mistral_system_user_home }}"
-    - path: "/var/log/mistral"
-      mode: "0755"
 
 - name: Install distro packages
   package:

templates/mistral-uwsgi.ini.j2

@@ -22,7 +22,7 @@ lazy-apps = true
 add-header = Connection: close
 buffer-size = {{ mistral_wsgi_buffer_size }}
 thunder-lock = true
-logfile-chmod = 644
+disable-logging = true
 pidfile = /var/run/{{ item.service_name }}/{{ item.service_name }}.pid
 
 # Avoid filling up the logs with health check requests from haproxy.

templates/mistral.conf.j2

@@ -2,7 +2,7 @@
 
 [DEFAULT]
 debug = {{ mistral_debug }}
-log_dir = /var/log/mistral
+use_journal = True
 transport_url = {{ mistral_oslomsg_rpc_transport }}://{% for host in mistral_oslomsg_rpc_servers.split(',') %}{{ mistral_oslomsg_rpc_userid }}:{{ mistral_oslomsg_rpc_password }}@{{ host }}:{{ mistral_oslomsg_rpc_port }}{% if not loop.last %},{% else %}/{{ mistral_oslomsg_rpc_vhost }}{% if mistral_oslomsg_rpc_use_ssl | bool %}?ssl=1{% else %}?ssl=0{% endif %}{% endif %}{% endfor %}
 
 [api]

vars/debian.yml

@@ -15,6 +15,7 @@
 
 mistral_devel_distro_packages:
   - git-core
+  - libsystemd-dev
 
 mistral_distro_packages:
   - libxml2
@@ -22,6 +23,7 @@ mistral_distro_packages:
 
 mistral_service_distro_packages:
   - python3-mistral
+  - python3-systemd
   - uwsgi
   - uwsgi-plugin-python3
 

vars/redhat-7.yml

@@ -15,6 +15,7 @@
 
 mistral_devel_distro_packages:
   - git
+  - systemd-devel
 
 mistral_distro_packages: []
 
@@ -23,6 +24,7 @@ mistral_service_distro_packages:
   - openstack-mistral-engine
   - openstack-mistral-executor
   - openstack-mistral-notifier
+  - systemd-python
 
 mistral_oslomsg_amqp1_distro_packages:
   - cyrus-sasl-lib

vars/suse.yml

@@ -15,11 +15,13 @@
 
 mistral_devel_distro_packages:
   - git
+  - systemd-devel
 
 mistral_distro_packages: []
 
 mistral_service_distro_packages:
   - openstack-mistral
+  - python-systemd
 
 mistral_oslomsg_amqp1_distro_packages:
   - cyrus-sasl