Ansible: allocating an elastic ip to newly created instance - amazon-web-services

Question

I am creating a new instance with ansible and want to associate an elastic ip to it. What value should i write in instance_id? instance_id: "{{ newinstance.instances[0].id }}" ??? But this value seems to be wrong, because i have an output after checking:
TASK: [Allocating elastic IP to instance] *************************************
fatal: [localhost] => One or more undefined variables: 'dict object' has no attribute 'instances'
---
- name: Setup an EC2 instance
hosts: localhost
connection: local
tasks:
- name: Create an EC2 machine
ec2:
aws_access_key: my_access_key
aws_secret_key: my_secret_key
key_name: my_key
instance_type: t1.micro
region: us-east-1
image: some_ami
wait: yes
vpc_subnet_id: my_subnet
assign_public_ip: yes
register: newinstance
- name: Allocating elastic IP to instance
ec2_eip:
aws_access_key: my_access_key
aws_secret_key: my_secret_key
in_vpc: yes
reuse_existing_ip_allowed: yes
state: present
region: us-east-1
instance_id: "{{ newinstance.instances[0].id }}"
register: instance_eip
- debug: var=instance_eip.public_ip
- name: Wait for SSH to start
wait_for:
host: "{{ newinstance.instances[0].private_ip }}"
port: 22
timeout: 300
sudo: false
delegate_to: "127.0.0.1"
- name: Add the machine to the inventory
add_host:
hostname: "{{ newinstance.instances[0].private_ip }}"
groupname: new
What should i put instead "{{ newinstance.instances[0].id }}"? The same question is about "{{ newinstance.instances[0].private_ip }}".

Answer 1

You are basically trying to parse data from the JSON output of Ansible task which is given to your variable. instance_ids is an array and child of newinstance JSON. Similarly private_ip is a direct child of newinstance
---
- name: Setup an EC2 instance
hosts: localhost
connection: local
tasks:
- name: Create an EC2 machine
ec2:
aws_access_key: my_access_key
aws_secret_key: my_secret_key
key_name: my_key
instance_type: t1.micro
region: us-east-1
image: some_ami
wait: yes
vpc_subnet_id: my_subnet
assign_public_ip: yes
register: newinstance
- name: Allocating elastic IP to instance
ec2_eip:
aws_access_key: my_access_key
aws_secret_key: my_secret_key
in_vpc: yes
reuse_existing_ip_allowed: yes
state: present
region: us-east-1
instance_id: "{{ newinstance.instance_ids[0] }}"
register: instance_eip
- debug: var=instance_eip.public_ip
- name: Wait for SSH to start
wait_for:
host: "{{ newinstance.private_ip }}"
port: 22
timeout: 300
sudo: false
delegate_to: "127.0.0.1"
- name: Add the machine to the inventory
add_host:
hostname: "{{ newinstance.private_ip }}"
groupname: new