Merge pull request #2515 from edx/jibsheet/create_mongo_users

Playbook to create mongo users

playbooks/edx-east/create_mongo_users.yml

+#
+# This play expects PyMongo to be installed locally.  You need to provide
+# the hostname or IP address of one of the mongo hosts, 
+#
+# ansible-playbook -i localhost, create_mongo_users.yml -e@edx.yml -e@stage-edx.yml -e@db/edxapp-mongo.yml
+#
+# edxapp-mongo.yml should define MONGO_USERS with the following format
+#
+# MONGO_USERS:
+#   - user: edxapp001
+#     password: secret
+#     database: edxapp
+#     roles: readWrite
+# 
+# It should also define a login_host and repl_set.  You can set login_host to
+# be any member of your cluster as this code will find and connect to the
+# primary.
+#
+# login_host: 10.17.90.123
+# repl_set: prod-edx-edxapp
+
+- name: Create mongo users
+  hosts: all
+  gather_facts: False
+  connection: local
+# This allows you to use your virtualenv's pymongo instead of installing it globally
+  vars:
+    ansible_python_interpreter: "/usr/bin/env python"
+  tasks:
+    - name: install python mongo module
+      pip: name=pymongo state=present
+
+    - name: create a mongodb user
+      mongodb_user:
+        database: "{{ item.database }}"
+        login_user: "{{ MONGO_ADMIN_USER }}"
+        login_password: "{{ MONGO_ADMIN_PASSWORD }}"
+        login_host: "{{ login_host }}"
+        name: "{{ item.user }}"
+        password: "{{ item.password }}"
+        roles: "{{ item.roles }}"
+        state: present
+        replica_set: "{{ repl_set }}"
+      with_items: MONGO_USERS