Separate installing mysql for configuring apps that use it.

edxlocal is too generic and does a lot of things.  This is the beginning
of separating it into roles that are more single purpose and easier to
understand.

playbooks/edx-east/analytics_single.yml

@@ -9,6 +9,7 @@
     EDXAPP_OAUTH_ENFORCE_SECURE: false
     EDXAPP_LMS_BASE_SCHEME: http
   roles:
+    - mysql
     - edxlocal
     - analytics_api
     - analytics_pipeline

playbooks/edx-east/edx_continuous_integration.yml

@@ -19,6 +19,7 @@
       - ecommerce
       nginx_default_sites:
       - lms
+    - mysql
     - role: edxlocal
       tags: edxlocal
     - mongo

playbooks/edx-east/edx_jenkins_tests.yml

@@ -24,6 +24,7 @@
       - ora
       nginx_default_sites:
       - lms
+    - mysql
     - edxlocal
     - mongo
     - edxapp

playbooks/edx-east/jenkins_worker.yml

@@ -18,6 +18,7 @@
     - roles/xserver/defaults/main.yml
     - roles/forum/defaults/main.yml
   roles:
+    - mysql
     - edxlocal
     - mongo
     - browsers

playbooks/edx_sandbox.yml

@@ -30,6 +30,7 @@
       - xqueue
       nginx_default_sites:
       - lms
+    - mysql
     - edxlocal
     - mongo
     - { role: 'edxapp', celery_worker: True }

playbooks/roles/edxlocal/defaults/main.yml

 ---
 edxlocal_debian_pkgs:
-  # Note that mysql 5.6 is installed from a non standard PPA in tasks/main.yml
-  # It is not listed here because of non-standard steps required to install
-  # mysql 5.6 on 12.04
-  - python-mysqldb
   - postfix
   - libjpeg-dev
 

playbooks/roles/edxlocal/tasks/main.yml

 # Installs packages to run edx locally on a single instance
-# requires:
-#  - group_vars/all
-#  - common/tasks/main.yml
-#
-#  This installs mysql-server-5.5 though
-#  in production we use mysql-5.1.62.
-#
-#  We could install from source instead:
-#  http://downloads.mysql.com/archives/mysql-5.1/mysql-5.1.62.tar.gz
 #
 ---
 
-# Install PPA for installing MySQL 5.6 on Ubuntu 12.04LTS
-- name: install ppa key
-  apt_key:
-    id=E5267A6C
-    url='{{ COMMON_UBUNTU_APT_KEYSERVER }}0x14AA40EC0831756756D7F66C4F4EA0AAE5267A6C'
-    state=present
-
-- name: install apt repository
-  apt_repository:
-    repo='deb http://ppa.launchpad.net/ondrej/mysql-5.6/ubuntu precise main'
-    update_cache=yes
-  
-- name: look for mysql 5.5
-  shell: dpkg -L mysql-server-5.5
-  ignore_errors: true
-  register: mysql_55_installed
-
-- include: remove_mysql_55.yml
-  when: mysql_55_installed.rc != 1
-
-- name: install mysql 56 and dependencies
-  apt: pkg={{ item }} install_recommends=yes force=yes state=present
-  with_items:
-    - software-properties-common
-    - mysql-server
-
-- name: start mysql
-  service: name=mysql state=started
-    
-- name: install packages needed for single server
-  apt: pkg={{','.join(edxlocal_debian_pkgs)}} install_recommends=yes state=present
+# TODO: Add a test to make sure mysql is running.
 
 - name: create databases
   mysql_db:

playbooks/roles/mysql/defaults/main.yml

+---
+mysql_debian_pkgs:
+  # Note that mysql 5.6 is installed from a non standard PPA in tasks/main.yml
+  # It is not listed here because of non-standard steps required to install
+  # mysql 5.6 on 12.04
+  - python-mysqldb

playbooks/roles/mysql/meta/main.yml

+---
+dependencies:
+  - common

playbooks/roles/mysql/tasks/main.yml

+# Installs packages to run edx locally on a single instance
+# requires:
+#  - group_vars/all
+#  - common/tasks/main.yml
+#
+#  This installs mysql-server-5.5 though
+#  in production we use mysql-5.1.62.
+#
+#  We could install from source instead:
+#  http://downloads.mysql.com/archives/mysql-5.1/mysql-5.1.62.tar.gz
+#
+---
+
+# Install PPA for installing MySQL 5.6 on Ubuntu 12.04LTS
+- name: install ppa key
+  apt_key:
+    id=E5267A6C
+    url='{{ COMMON_UBUNTU_APT_KEYSERVER }}0x14AA40EC0831756756D7F66C4F4EA0AAE5267A6C'
+    state=present
+
+- name: install apt repository
+  apt_repository:
+    repo='deb http://ppa.launchpad.net/ondrej/mysql-5.6/ubuntu precise main'
+    update_cache=yes
+  
+- name: look for mysql 5.5
+  shell: dpkg -L mysql-server-5.5
+  ignore_errors: true
+  register: mysql_55_installed
+
+- include: remove_mysql_55.yml
+  when: mysql_55_installed.rc != 1
+
+- name: install mysql 56 and dependencies
+  apt: pkg={{ item }} install_recommends=yes force=yes state=present
+  with_items:
+    - software-properties-common
+    - mysql-server
+
+- name: start mysql
+  service: name=mysql state=started
+    
+- name: install packages needed for single server
+  apt: pkg={{','.join(mysql_debian_pkgs)}} install_recommends=yes state=present

playbooks/vagrant-analytics.yml

@@ -17,6 +17,7 @@
     EDXAPP_LMS_BASE_SCHEME: http
   roles:
     - edx_ansible
+    - mysql
     - edxlocal
     - mongo
     - edxapp
@@ -27,4 +28,4 @@
     - analytics_api
     - analytics_pipeline
     - insights
-    - local_dev
+    - local_dev
\ No newline at end of file

playbooks/vagrant-devstack.yml

@@ -17,6 +17,7 @@
     EDXAPP_LMS_BASE_SCHEME: http
   roles:
     - edx_ansible
+    - mysql
     - edxlocal
     - mongo
     - edxapp

playbooks/vagrant-fullstack.yml

@@ -27,6 +27,7 @@
       nginx_default_sites:
       - lms
       - cms
+    - mysql
     - edxlocal
     - mongo
     - edxapp