---
# ------------------------
# Deploy the general stuff
# ------------------------
- hosts: all
  sudo: yes
  
  vars:
    ssh_keys_to_use: files/cloud.key
    user: ubuntu
 
  pre_tasks:
    - name: Update APT cache
      apt: update_cache=yes

  tasks:
    - name: install java
      apt: name=openjdk-7-jre state=present update_cache=yes

    - name: disable net.ipv6.conf.all.disable_ipv6
      sysctl: name=net.ipv6.conf.all.disable_ipv6 value=1 state=present

    - name: disable net.ipv6.conf.default.disable_ipv6
      sysctl: name=net.ipv6.conf.default.disable_ipv6 value=1 state=present
 
    - name: disable net.ipv6.conf.lo.disable_ipv6
      sysctl: name=net.ipv6.conf.lo.disable_ipv6 value=1 state=present

    - name: distribute host file
      template: src=templates/hosts.j2 dest=/etc/hosts

    - name: deploy ssh-keys
      copy: src={{ssh_keys_to_use}} dest=/home/{{ user }}/.ssh/
      register: ssh_key

    - name: distribute ssh config
      template: src=templates/config.j2 dest=/home/{{ user }}/.ssh/config
      register: ssh_debug

    - name: download spark
      get_url:
        url=http://d3kbcqa49mib13.cloudfront.net/spark-1.2.1-bin-hadoop2.4.tgz 
        dest=/opt/ 
        sha256sum=8e618cf67b3090acf87119a96e5e2e20e51f6266c44468844c185122b492b454
 
    - name: unzip spark
      unarchive: copy=no src=/opt/spark-1.2.1-bin-hadoop2.4.tgz  dest=/opt

    - name: deploy slaves configuration
      template: src=templates/slaves.j2 dest=/opt/spark-1.2.1-bin-hadoop2.4/conf/slaves
       
# --------------------------------------------------
# Kick of spark (making the master start the slaves)
# --------------------------------------------------
- hosts: spark_masters

  tasks:

    - name: stop spark master (if running)
      command: /opt/spark-1.2.1-bin-hadoop2.4/sbin/stop-master.sh

    - name: start spark master
      shell: SPARK_MASTER_IP="{{ ansible_hostname }}" /opt/spark-1.2.1-bin-hadoop2.4/sbin/start-master.sh

    - name: stop the slaves (if running)
      shell: /opt/spark-1.2.1-bin-hadoop2.4/sbin/stop-slaves.sh

    - name: start the slaves
      shell: /opt/spark-1.2.1-bin-hadoop2.4/sbin/start-slaves.sh