フィンガーイース

Terraform に埋もれがちですが Ansible でも AWS のリソース構築が出来るんですよね。

作るもの

・VPC
・public subnet x 2
・private subnet x 2
・internet gateway
・route table

ディレクトリ構造

├── README.md
├── ansible.cfg
├── hosts
├── roles
│   └── aws_vpc
│       ├── tasks
│       │   └── main.yml
│       └── vars
│           └── main.yml
└── vpc_create.yml

インベントリファイル

root@DESKTOP-MOGIJIA:/opt/playbook/aws-vpc-2layer# cat hosts
[localhost]
127.0.0.1

Role

root@DESKTOP-MOGIJIA:/opt/playbook/aws-vpc-2layer# cat roles/aws_vpc/tasks/main.yml
---
# tasks file for aws_vpc
- name: create_vpc
  ec2_vpc_net:
    name: "{{ vpc_name }}"
    cidr_block: "{{ vpc_cidr }}"
    region: "{{ region }}"
    dns_hostnames: yes
    dns_support: yes
  register: vpc_info

# PUBLIC_SUBNETの作成
- name: create_public_subnet
  ec2_vpc_subnet:
    vpc_id: "{{ vpc_info.vpc.id }}"
    cidr: "{{ item.pub_subnet_cidr }}"
    az: "{{ item.subnet_az }}"
    region: "{{ region }}"
    resource_tags: { "Name":"{{ item.pub_subnet_name }}" }
  register: pubsub_info
  with_items:
    - "{{ pub_subnet }}"

# PRIVATE_SUBNETの作成
- name: create_private_subnet
  ec2_vpc_subnet:
    vpc_id: "{{ vpc_info.vpc.id }}"
    cidr: "{{ item.pri_subnet_cidr }}"
    az: "{{ item.subnet_az }}"
    region: "{{ region }}"
    resource_tags: { "Name":"{{ item.pri_subnet_name }}" }
  register: prisub_info
  with_items:
    - "{{ pri_subnet }}"

# IGWの作成
- name: create_igw
  ec2_vpc_igw:
    vpc_id: "{{ vpc_info.vpc.id }}"
    region: "{{ region }}"
    tags: { "Name":"{{ igw_name }}" }
  register: igw_info

# ROUTETABLEの作成(IGW)
- name: create_route_table
  ec2_vpc_route_table:
    vpc_id: "{{ vpc_info.vpc.id }}"
    subnets: "{{ atache_igw_subnet }}"
    routes:
      - dest: 0.0.0.0/0
        gateway_id: "{{ igw_info.gateway_id }}"
    region: "{{ region }}"
    resource_tags: { "Name":"{{ rttable_pub_name }}" }

root@DESKTOP-MOGIJIA:/opt/playbook/aws-vpc-2layer# cat roles/aws_vpc/vars/main.yml
---
# vars file for aws_vpc

# REGION
  region: "ap-northeast-1"

# VPC
  vpc_name: "sanuki-wd-vpc"
  vpc_cidr: "10.0.0.0/16"

# IGW
  igw_name: "sanuki-igw"

# ROUTETABLE(PUBLIC)
  rttable_pub_name: "sanuki-pub-rt"

# PUBLIC_SUBNET
  pub_subnet:
    - { pub_subnet_cidr: "10.0.10.0/24" ,subnet_az: "ap-northeast-1a" ,pub_subnet_name: "sanuki-wd-public-subnet-a" }
    - { pub_subnet_cidr: "10.0.20.0/24" ,subnet_az: "ap-northeast-1c" ,pub_subnet_name: "sanuki-wd-public-subnet-c" }

# PRIVATE_SUBNET
  pri_subnet:
    - { pri_subnet_cidr: "10.0.50.0/24" ,subnet_az: "ap-northeast-1a" ,pri_subnet_name: "sanuki-wd-private-subnet-a" }
    - { pri_subnet_cidr: "10.0.60.0/24" ,subnet_az: "ap-northeast-1c" ,pri_subnet_name: "sanuki-wd-private-subnet-c" }

# IGWに紐付けるサブネット
  atache_igw_subnet:
    - "10.0.10.0/24"
    - "10.0.20.0/24"

playbook

root@DESKTOP-MOGIJIA:/opt/playbook/aws-vpc-2layer# cat vpc_create.yml
---
# VPC CREATE Playbook
- name: create vpc subnet igw routetable
  hosts: localhost
  connection: local
  gather_facts: False
  become: False
  roles:
    - aws_vpc

実行

root@DESKTOP-MOGIJIA:/opt/playbook/aws-vpc-2layer# ansible-playbook -i hosts vpc_create.yml

PLAY [create vpc subnet igw routetable] ********************************************************************************

TASK [aws_vpc : create_vpc] ********************************************************************************************
[DEPRECATION WARNING]: Distribution Ubuntu 18.04 on host 127.0.0.1 should use /usr/bin/python3, but is using
/usr/bin/python for backward compatibility with prior Ansible releases. A future Ansible release will default to using
the discovered platform python for this host. See
https://docs.ansible.com/ansible/2.9/reference_appendices/interpreter_discovery.html for more information. This feature
 will be removed in version 2.12. Deprecation warnings can be disabled by setting deprecation_warnings=False in
ansible.cfg.
changed: [127.0.0.1]

TASK [aws_vpc : create_public_subnet] **********************************************************************************
changed: [127.0.0.1] => (item={u'pub_subnet_name': u'sanuki-wd-public-subnet-a', u'subnet_az': u'ap-northeast-1a', u'pub_subnet_cidr': u'10.0.10.0/24'})
changed: [127.0.0.1] => (item={u'pub_subnet_name': u'sanuki-wd-public-subnet-c', u'subnet_az': u'ap-northeast-1c', u'pub_subnet_cidr': u'10.0.20.0/24'})

TASK [aws_vpc : create_private_subnet] *********************************************************************************
changed: [127.0.0.1] => (item={u'pri_subnet_cidr': u'10.0.50.0/24', u'pri_subnet_name': u'sanuki-wd-private-subnet-a', u'subnet_az': u'ap-northeast-1a'})
changed: [127.0.0.1] => (item={u'pri_subnet_cidr': u'10.0.60.0/24', u'pri_subnet_name': u'sanuki-wd-private-subnet-c', u'subnet_az': u'ap-northeast-1c'})

TASK [aws_vpc : create_igw] ********************************************************************************************
changed: [127.0.0.1]

TASK [aws_vpc : create_route_table] ************************************************************************************
changed: [127.0.0.1]

PLAY RECAP *************************************************************************************************************
127.0.0.1                  : ok=5    changed=5    unreachable=0    failed=0    skipped=0    rescued=0    ignored=0

補足

boto3 が必要になります。
pip でインストールしておいて下さい。

pip install boto boto3