initial tasks to install RethinkDB

ntools/one-m/ansible/one-m-node.yml

@@ -9,3 +9,4 @@
     - bcdb_base
     - ntp
     - db_storage
+    - install_rethinkdb

ntools/one-m/ansible/roles/install_rethinkdb/tasks/main.yml

@@ -0,0 +1,22 @@
+---
+# ansible/roles/install_rethinkdb/tasks/main.yml
+
+# Note: the .list extension will be added to the rethinkdb filename automatically
+- name: Ensure RethinkDB's APT repository for Ubuntu trusty is present in /etc/apt/sources.list.d/rethinkdb.list
+  apt_repository:
+    repo='deb http://download.rethinkdb.com/apt trusty main'
+    filename=rethinkdb
+    state=present
+  become: true
+
+- name: Ensure RethinkDB's public GPG key is in the set of APT keys
+  apt_key: url=http://download.rethinkdb.com/apt/pubkey.gpg state=present
+  become: true
+
+- name: Ensure the latest rethinkdb Ubuntu package is installed
+  apt: name=rethinkdb state=latest update_cache=yes
+  become: true
+
+- name: Ensure the /data directory's owner and group are both 'rethinkdb'
+  file: path=/data state=directory owner=rethinkdb group=rethinkdb
+  become: true