create_ec2_instance.yml

---
- name: Multi purpose EC2 playbook 
  hosts: localhost #newly created and stored into inventory.yml
  gather_facts: False
  vars:
    vm_count: 1 #defaults to 1
    vpc_subnet_id: 'subnet-idxxxxx' #your pre-configured AWS subnet 
    my_aws_access_key: "" #your AWS access key
    my_aws_secret_key: "" #your AWS secret
    key_name: keyname #your ssh key name
    instance_name: "oc cluster-up instance" #the tag you want your instance to be named in the AWS console
    group_id: "" #your pre-configured security group in AWS enabling SSH, HTTP/80, HTTS/8443
    #further configurations below

  tasks:
  # https://aws.amazon.com/ec2/instance-types/
  # https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/instance-types.html
  - name: Create RHEL instance in ec2
    ec2:
      image: ami-1987757b 
      instance_type: t2.medium
      aws_access_key: "{{ my_aws_access_key }}"
      aws_secret_key: "{{ my_aws_secret_key }}"
      key_name: "{{ key_name }}"
      region: 'ap-southeast-2'
      wait: yes 
      count: "{{ vm_count|int }}"
      instance_tags:
        purpose: oc_cluster_up 
        Name: "{{ instance_name }}"
      vpc_subnet_id: "subnet-idxxxx" #subnet_id
      assign_public_ip: yes
      group: "{{ group_id }}"
    register: ec2

  - name: Create inventory.yml file with the instance public ip
    lineinfile:
      path: "./inventory.yml"
      backup: yes
      create: yes
      line: "{{ item.public_dns_name }}"
    with_items: "{{ ec2.instances }}"

  - name: Wait for SSH to come up
    wait_for:
      host: "{{ item.public_dns_name }}"
      port: 22
      delay: 60
      timeout: 120
      state: started
    with_items: "{{ ec2.instances }}"