deploy-aws-mongo.yml

# Example to create an AWS instance and install MongoDB
#
# The region, key_name, image and security group (group) must match your configuration
#
# Before running the playbook, ensure that:
#  - The key 'demo-key' has been added to ssh-agent
#  - export ANSIBLE_HOST_KEY_CHECKING=False
#  - The environment variables AWS_ACCESS_KEY_ID and AWS_SECRET_ACCESS_KEY match your credentials
#
---
- hosts: localhost
  connection: local
  gather_facts: no
  tasks:

      - name: EC2 provisioning of MongoDB instance
        ec2:
            region: eu-west-1
            key_name: demo-key
            instance_type: t2.micro
            image: ami-234ecc54
            wait: yes
            instance_tags:
                Name: mongo-server
            exact_count: 1
            count_tag:
                Name: mongo-server
            group:
                - SSH-ACCESS
            volumes:
                - device_name: /dev/xvdc
                  # /dev/xvdc of 5 GB
                  volume_size: 5
        register: ec2

      - name: Wait for SSH to come up
        wait_for: host={{ item.public_ip }} port=22 delay=10 timeout=320 state=started
        with_items: ec2.instances

      - name: Add the host to the group to be provisioned
        add_host: name={{ item.public_ip }} groupname=to_be_provisioned
        with_items: ec2.instances

- hosts: to_be_provisioned
  user: ubuntu
  sudo: yes
  roles:

      - {
          role: mongodb_server,
          small_files: true
        }

  tasks:

      - name: Install the pre-requisites
        apt: name={{ item }} update_cache=yes
        with_items:
            - lvm2

      - name: Create a vg named vgdata with /dev/xvdc
        lvg: vg=vgdata pvs=/dev/xvdc

      - name: Create a lv named lvdata01 in vgdata
        lvol: vg=vgdata lv=lvdata01 size=80%VG

      - name: Create an ext4 filesystem in /dev/mapper/vgdata-lvdata01
        filesystem: fstype=ext4 dev=/dev/mapper/vgdata-lvdata01

      - name: Make sure mongod is stopped
        service: name=mongod state=stopped

      - name: Mount the directory
        mount: name=/var/lib/mongodb src=/dev/mapper/vgdata-lvdata01 fstype=ext4 state=mounted

      - name: Re-establish permissions for the directory
        file: path=/var/lib/mongodb owner=mongodb group=nogroup state=directory recurse=yes

      - name: Make sure mongod is started
        service: name=mongod state=started