Got Ansible to install, config & run BigchainDB

ntools/one-m/ansible/roles/bigchaindb/files/start_bigchaindb.sh

@@ -0,0 +1,3 @@
+#!/bin/bash
+bigchaindb -y start &
+disown

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

@@ -1,5 +1,5 @@
 ---
-# ansible/roles/bcdb_base/tasks/main.yml
+# ansible/roles/bigchaindb/tasks/main.yml
 
 # Note: "become: true" basically means "become root user for this task" i.e. sudo <cmd>
 # See https://docs.ansible.com/ansible/become.html
@@ -25,6 +25,39 @@
   pip: executable=pip3 name=setuptools state=latest
   become: true
 
+- name: Install BigchainDB from PyPI using sudo pip3 install bigchaindb
+  pip: executable=pip3 name=bigchaindb state=latest
+  become: true
+
+- name: Gather facts about the file ~/.bigchaindb
+  stat: path={{ ansible_env.HOME }}/.bigchaindb
+  register: home_bigchaindb_config_file
+
+- name: If ~/.bigchaindb doesn't exist, generate a default BigchainDB config file there
+  shell: bigchaindb -y configure
+  when: not home_bigchaindb_config_file.stat.exists
+
+- name: Look up all processes with 'bigchaindb' in their name
+  shell: pgrep bigchaindb
+  ignore_errors: true
+  changed_when: false
+  register: pgrep_bigchaindb
+
+# pgrep_bigchaindb.rc (return code) should be 0 if a bigchaindb process is already running
+
+- name: Ensure a copy of start_bigchaindb.sh is on the remote host
+  copy: src=start_bigchaindb.sh dest=/tmp/start_bigchaindb.sh mode=0775
+  become: true
+
+# Running BigchainDB in the background from Ansible is tricky, see:
+# https://superuser.com/questions/870871/run-a-remote-script-application-in-detached-mode-in-ansible
+- name: If BigchainDB isn't running then run it
+  command: /tmp/start_bigchaindb.sh
+  async: 45
+  poll: 0
+  when: pgrep_bigchaindb.rc != 0
+
+
 # Notes about getting the latest version of pip3:
 #
 # The first way I tried to get the latest pip3 (commented-out below) didn't work.

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

@@ -23,14 +23,24 @@
   file: path=/data state=directory owner=rethinkdb group=rethinkdb
   become: true
 
-- name: Gather facts about the file /data/metadata
-  stat: path=/data/metadata
-  register: data_metadata_file
+- name: Gather facts about the file /tmp/created_on_run1
+  stat: path=/tmp/created_on_run1
+  register: file_created_on_run1
 
-- name: Create /data/metadata file if it doesn't exist
-  file: path=/data/metadata state=touch owner=rethinkdb group=rethinkdb mode=0664
-  when: not data_metadata_file.stat.exists
+- name: if the file /tmp/created_on_run1 doesn't exist then create /data/delete_me
+  file: path=/data/delete_me state=touch owner=rethinkdb group=rethinkdb
   become: true
+  when: not file_created_on_run1.stat.exists
+
+- name: if the file /tmp/created_on_run1 doesn't exist then do sudo rm -rf /data/*
+  shell: rm -rf /data/*
+  become: true
+  when: not file_created_on_run1.stat.exists
+
+- name: if the file /tmp/created_on_run1 doesn't exist then create it
+  file: path=/tmp/created_on_run1 state=touch
+  become: true
+  when: not file_created_on_run1.stat.exists
 
 # To enable starting RethinkDB on boot (on init.d systems),
 # the config file must be put in /etc/rethinkdb/instances.d/
@@ -43,8 +53,8 @@
   template:
     src=rethinkdb.conf.j2
     dest=/etc/rethinkdb/instances.d/instance1.conf
-    owner=rethinkdb
-    group=rethinkdb
+    owner=root
+    group=root
     mode=0664
   become: true
   register: config_file
@@ -54,6 +64,8 @@
   become: true
   register: rethinkdb_started
 
+- debug: var=rethinkdb_started
+
 - debug: msg="The RethinkDB config file changed while RethinkDB was already running. 
     RethinkDB was not stopped and restarted. You must do that manually."
   when: config_file.changed and (not rethinkdb_started.changed)

ntools/one-m/ansible/roles/rethinkdb/templates/rethinkdb.conf.j2

@@ -1,8 +1,10 @@
 directory=/data
+runuser=rethinkdb
+rungroup=rethinkdb
 bind=all
 # The IP address of localhost is 127.0.0.1
-bind-http=127.0.0.1
-direct-io
+#bind-http=127.0.0.1
+# direct-io
 # List of *other* hostnames in the cluster:
 # join=hostname1:29015
 # join=hostname2:29015