Merge pull request #38 from edx/jbau/upstart

role for upstart tasks, parameterized in the style the nginx role

playbooks/edxapp_prod.yml

@@ -6,5 +6,6 @@
   roles:
     - common
     - nginx
+    - gunicorn
     - lms
     - ruby

playbooks/edxapp_stage.yml

@@ -6,5 +6,6 @@
   roles:
     - common
     - nginx
+    - gunicorn
     - lms
     - ruby

playbooks/roles/gunicorn/tasks/main.yml

+---
+- name:  pip install gunicorn
+  pip: name=gunicorn virtualenv="{{venv_dir}}" state=present
+  tags:
+  - gunicorn

playbooks/roles/gunicorn/tasks/upstart.yml

+#write the gunicorn upstart script for {{ service_variant }}
+- name: writing ${service_variant} upstart script to /etc/init
+  sudo: True
+  template: src={{ item }} dest=/etc/init/${service_variant}.conf owner=root group=root
+  first_available_file:
+  - "{{ local_dir }}/gunicorn/templates/{{ service_variant }}.conf.j2"
+  # seems like paths in first_available_file must be relative to the playbooks dir
+  - "roles/gunicorn/templates/{{ service_variant }}.conf.j2"
+  tags:
+  - upstart
+  - gunicorn

playbooks/roles/gunicorn/templates/lms.conf.j2

+# gunicorn
+
+description "gunicorn server"
+author "Calen Pennington <cpennington@mitx.mit.edu>"
+
+start on runlevel [2345]
+stop on runlevel [!2345]
+
+respawn
+respawn limit 3 30
+
+env PID=/var/tmp/lms.pid
+#env NEW_RELIC_CONFIG_FILE=${app_base_dir}/opt/wwc/newrelic.ini
+#env NEWRELIC=${app_base_dir}/bin/newrelic-admin
+env WORKERS=${lms_num_workers}
+env PORT=8000
+env LANG=en_US.UTF-8
+env DJANGO_SETTINGS_MODULE=lms.envs.aws
+env SERVICE_VARIANT="lms"
+
+
+chdir ${app_base_dir}/mitx
+setuid www-data
+
+exec ${venv_dir}/bin/gunicorn --preload -b 127.0.0.1:$PORT -w $WORKERS --timeout=300 --pythonpath=${app_base_dir}/mitx lms.wsgi
+
+post-start script
+  while true
+  do
+    if $(curl -s -i localhost:$PORT/heartbeat | egrep -q '200 OK'); then
+      break;
+    else
+      sleep 1;
+    fi
+  done
+end script
+

playbooks/roles/gunicorn/vars/main.yml

+---
+lms_num_workers: 1
\ No newline at end of file

playbooks/roles/lms/tasks/main.yml

@@ -8,16 +8,19 @@
   sudo: True
   tags:
   - lms
+  - lms-env
 
 - name: create lms auth file
   template: src=auth.json.j2 dest=$app_base_dir/lms.auth.json
   sudo: True
   tags:
   - lms
+  - lms-env
 
 - include: ../../nginx/tasks/nginx_site.yml state=link site_name=lms
 - include: ../../nginx/tasks/nginx_site.yml state=link site_name=lms-backend
 
+
 # Install ssh keys for ubuntu account to be able to check out from mitx
 # Temprory behavior, not needed after June 1. Perhaps still useful as a recipe.
 # {{ secure_dir }} is relative to the top-level playbooks dir so there is some
@@ -111,3 +114,6 @@
   tags:
   - lms
   - cms
+  
+# Creates LMS upstart file
+- include: ../../gunicorn/tasks/upstart.yml service_variant=lms

playbooks/roles/nginx/tasks/nginx_site.yml

@@ -11,6 +11,7 @@
   tags:
   - nginx
   - lms
+  - nginx-env
 
 - name: Creating nginx config link {{ site_name }}
   sudo: True
@@ -19,3 +20,4 @@
   tags:
   - nginx
   - lms
+  - nginx-env