tomwwright

# hosts.inventory
# ---
# the host and group list for this example "Ansibled" project

[elasticsearch]
big.elasticsearch.ansibled
small.elasticsearch.ansibled

[vpc]
vpc.ansibled

tomwwright

# group_vars/elasticsearch.yml
# ---
# specify defaults for our Elasticsearch clusters

elasticsearch_version: 6.0
elasticsearch_instance_type: r4.large
elasticsearch_instance_count: 3
elasticsearch_dedicated_masters_enabled: false

tomwwright

# elasticsearch.yml
# ---
# playbook that builds elasticsearch clusters: run our facts tasks for the VPC
# to define some necessary details, then run the setup tasks

- hosts: elasticsearch
  environment:
    AWS_ACCESS_KEY_ID: "{{ aws_access_key }}"
    AWS_SECRET_ACCESS_KEY: "{{ aws_secret_key }}"
    AWS_REGION: "{{ aws_region }}"

tomwwright

# tasks/aurora/setup.parameter-group.yml
# ---
# use the AWS CLI to create a (default) parameter group for Aurora clusters

# list existing cluster parameter groups using the AWS CLI
- name: check for DB cluster parameter group
  command: >
    aws rds describe-db-cluster-parameter-groups
      --no-paginate
      --region {{ aws_region }}

tomwwright

# tasks/auroradb/setup.cluster.yml
# ---
# check if an Aurora DB cluster exists, and create it if it doesn't. Then update the VPC DNS

# look for an existing Aurora DB cluster for this host using the AWS CLI
- name: check for Aurora DB cluster
  command: aws rds describe-db-clusters --filters Name=db-cluster-id,Values={{ aurora_cluster_name }} --region {{ aws_region }}
  changed_when: false
  register: aurora_cluster_query

tomwwright

# aurora.yml
# ---
# playbook that builds Aurora clusters and Aurora DB instances

# first run a play for any cluster hosts to create them
- hosts: aurora.cluster
  environment:
    AWS_ACCESS_KEY_ID: "{{ aws_access_key }}"
    AWS_SECRET_ACCESS_KEY: "{{ aws_secret_key }}"
    AWS_REGION: "{{ aws_region }}"

tomwwright

# hosts.inventory
# ---
# the host and group list for this example "Ansibled" project

[elasticsearch]
big.elasticsearch.ansibled
small.elasticsearch.ansibled

[aurora.cluster]
cluster.aurora.ansibled

tomwwright

# group_vars/aurora.cluster.yml
# ---
# default variables for hosts in the group for Aurora clusters

aurora_cluster_port: 3306

aurora_cluster_security_group_ids:
  - "{{ vpc_security_group_ids['vpc'] }}"

aurora_cluster_availability_zones:

tomwwright

# host_vars/cluster.aurora.ansibled.yml
# ---
# specific variables for the "auroradb.ansibled" host

aurora_cluster_name: ansibled-aurora-cluster
aurora_cluster_dns: auroradb.{{ vpc_dns_zone }}

# credentials for the master user of our db cluster -- password (ansibled-db-password) encrypted with Ansible Vault
aurora_cluster_username: ansibled_db_user
aurora_cluster_password: !vault |

tomwwright

# aurora.yml
# ---
# playbook that builds Aurora clusters

# first run a play for any cluster hosts to create them
- hosts: aurora.cluster
  environment:
    AWS_ACCESS_KEY_ID: "{{ aws_access_key }}"
    AWS_SECRET_ACCESS_KEY: "{{ aws_secret_key }}"
    AWS_REGION: "{{ aws_region }}"