adding role for ansible bootstrap

playbooks/roles/ansible/defaults/main.yml

+---
+#
+# edX Configuration
+#
+# github:     https://github.com/edx/configuration
+# wiki:       https://github.com/edx/configuration/wiki
+# code style: https://github.com/edx/configuration/wiki/Ansible-Coding-Conventions
+# license:    https://github.com/edx/configuration/blob/master/LICENSE.TXT
+#
+##
+# Defaults for role ansible, an ansible role to install ansible
+#
+#
+# OS packages
+#
+
+ansible_debian_pkgs:
+  - python-pip
+  - python-apt
+  - git-core
+  - build-essential
+  - python-dev
+  - libxml2-dev
+  - libxslt-dev
+  - curl
+ansible_app_dir: "{{ COMMON_APP_DIR }}/ansible"
+ansible_code_dir: "{{ ansible_app_dir }}/ansible"
+ansible_data_dir: "{{ COMMON_DATA_DIR }}/ansible"
+ansible_venvs_dir: "{{ ansible_app_dir }}/venvs"
+ansible_venv_dir: "{{ ansible_venvs_dir }}/ansible"
+ansible_venv_bin: "{{ ansible_venv_dir }}/bin"
+ansible_user: "ansible"
+
+ansible_source_repo: https://github.com/ansible/ansible.git

playbooks/roles/ansible/meta/main.yml

+---
+#
+# edX Configuration
+#
+# github:     https://github.com/edx/configuration
+# wiki:       https://github.com/edx/configuration/wiki
+# code style: https://github.com/edx/configuration/wiki/Ansible-Coding-Conventions
+# license:    https://github.com/edx/configuration/blob/master/LICENSE.TXT
+#
+##
+# Role includes for role ansible
+---
+dependencies:
+  - supervisor

playbooks/roles/ansible/tasks/main.yml

+---
+#
+# edX Configuration
+#
+# github:     https://github.com/edx/configuration
+# wiki:       https://github.com/edx/configuration/wiki
+# code style: https://github.com/edx/configuration/wiki/Ansible-Coding-Conventions
+# license:    https://github.com/edx/configuration/blob/master/LICENSE.TXT
+#
+#
+# Tasks for role ansible
+#
+# Overview:
+#
+# This is an ansible role that installs ansible :)
+# The purpose is to install ansible on a server so
+# that it can be updated locally.
+#
+# This role will also drop some helper scripts that
+# for running ansible tasks
+#
+# Example play:
+#
+#
+#
+- name: ansible | create application user
+  user: >
+    name="{{ ansible_user }}"
+    home="{{ ansible_app_dir }}"
+    createhome=no
+    shell=/bin/false
+
+- name: ansible | create ansible app and venv dir
+  file: >
+    path="{{ item }}"
+    state=directory
+    owner="{{ ansible_user }}"
+    group="{{ common_web_group }}"
+  with_items:
+    - "{{ ansible_app_dir }}"
+    - "{{ ansible_venvs_dir }}"
+
+- name: ansible | install a bunch of system packages on which ansible relies
+  apt: pkg={{','.join(ansible_debian_pkgs)}} state=present
+
+- name: ansible | git checkout ansible repo into ansible_code_dir
+  git: dest={{ ansible_code_dir }} repo={{ ansible_source_repo }} version={{ ansible_version }}
+  sudo_user: "{{ ansible_user }}"
+
+- name : ansible | install ansible venv requirements
+  pip: requirements="{{ ansible_requirements_file }}" virtualenv="{{ ansible_venv_dir }}" state=present
+  sudo_user: "{{ ansible_user }}"
+
+- name: ansible | create update script
+  template: >
+    dest={{ ansible_app_dir}}/update
+    src=update owner=ansible group=ansible mode=755
+
+- name: edxapp | create a symlink for update.sh
+  file: >
+    src={{ ansible_app_dir }}/update
+    dest={{ COMMON_BIN_DIR }}/update
+    state=link

playbooks/roles/ansible/templates/update.j2

+#!/usr/bin/env bash
+
+# This script runs ansible locally
+
+set -e
+usage() {
+SAVE_IFS=$IFS
+IFS=","
+    cat<<EO
+
+    Usage: $PROG <repo> <version>
+            -v        add verbosity to ansible run
+            -h        this
+
+    <repo> - must be one of [${!repos_to_cmd[*]}]
+    <version> - can be a commit or tag
+
+EO
+IFS=$SAVE_IFS
+}
+
+declare -A repos_to_cmd
+ansible_cmd="ansible-playbook -c local -vvvv --tags deploy"
+repos_to_cmd["edx-platform"]="$ansible_cmd edxapp.yml -e 'edx_platform_version=$2'"
+repos_to_cmd["xqueue"]="$ansible_cmd xqueue.yml -e 'xqueue_version=$2'"
+repos_to_cmd["forums"]="$ansible_cmd forums.yml -e 'forum_version=$2'"
+repos_to_cmd["xserver"]="$ansible_cmd forums.yml -e 'xserver_version=$2'"
+repos_to_cmd["ease"]="$ansible_cmd discern.yml -e 'discern_ease_version=$2' && $ansible_cmd ora.yml -e 'ora_ease_version=$2'"
+repos_to_cmd["discern"]="$ansible_cmd discern.yml -e 'discern_version=$2'"
+repos_to_cmd["edx-ora"]="$ansible_cmd ora.yml -e 'ora_version=$2'"
+
+PROG=${0##*/}
+while getopts "vh" opt; do
+  case $opt in
+    v)
+        verbose="-vvv"
+        shift
+        ;;
+    h)
+        usage
+        exit 0
+        ;;
+  esac
+done
+
+if [[ -z ${repos_to_cmd[$1]} ]]; then
+    echo
+    echo "ERROR: Invalid repo name"
+    usage
+    exit 1
+fi
+
+if [[ -z $2 ]]; then
+    echo
+    echo "ERROR: You must specify a commit or tag"
+    usage
+    exit 1
+fi
+
+cd {{ ansible_code_dir }}/playbooks/edx-east
+eval "sudo ${repos_to_cmd["$1"]} $verbose"