register ec2 instance id and use it in ec2_ami module

[Navid Paya]

Hi all

I'm trying to make some kind of automation to create an AMI out of an EC2 instance. So I have this chunk that creates the instance:

- name: Launch an Ubuntu 14.04 EC2 instance

  hosts: localhost

  connection: local

  gather_facts: no

  tasks:

  - name: Find the latest Ubuntu AMI

    ec2_ami_search: distro=ubuntu release=trusty region=ap-southeast-1 store=ebs-ssd virt=hvm

    register: ubuntu_image

  - name: Start the new EC2 instance

    ec2:

      image: "{{ ubuntu_image.ami }}"

      region: ap-southeast-1

      zone: ap-southeast-1b

      instance_type: t2.small

      vpc_subnet_id: xxxxxxxxxxxxxxxx

      group_id: ['sg-xxxxxxxx', 'sg-xxxxxxx']

      key_name: random_key

      wait: yes

      wait_timeout: 500

    register: ec2

  - name: Add the new instance to host group

    add_host: hostname={{ item.private_ip }} groupname=launched

    with_items: ec2.instances

  - name: Wait for SSH to come up on the new instance

    wait_for: host={{ item.private_ip }} port=22 delay=60 timeout=320 state=started

    with_items: ec2.instances

Then I try to use the instance and generate an AMI out of that:

- name: Create an AMI from the provisioned instance

  hosts: localhost

  connection: local

  gather_facts: no

  tasks:

  - ec2_ami: region=ap-southeast-1 instance_id={{ item.id }} wait=no name=basebox-2000000

    with_items:

      - ec2.instances

- name: Delete the instance now that the AMI is created

  hosts: localhost

  connection: local

  gather_facts: no

  tasks:

  - ec2:

      region: ap-southeast-1

      instance_ids: "{{ item.id }}"

      state: 'absent'

    with_items:

      - ec2.instances

But I get errors like this:

TASK: [ec2_ami region=ap-southeast-1 instance_id={{ item.id }} wait=no name=basebox-2000000] ***

fatal: [localhost] => One or more undefined variables: 'str object' has no attribute 'id'

I guess I'm missing something with iterating over a hash but can't figure what. Any ideas?

[James Cammarata]

Hi Navid, what version of Ansible are you running? You might try using jinja2 braces around the ec2.instances variable in the with_items list, as there was a bug recently about variables like that not expanding properly (which should be fixed in 1.8.2).

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[Navid Paya]

Thanks, James. Upgrading Ansible from 1.8.1 to 1.8.2 and adding the braces totally did the job.

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[Stuart Davidson]

Hey Navid, you couldn't post an example could you? 

I seem to be running into the same problem as you, but 1.8.2 nor the brackets are fixing the problem.

[Navid Paya]

Hi Stuart

This works fine for me with Ansible 1.8 onwards:

  - name: Create an AMI from the provisioned instance

    ec2_ami: region=ap-southeast-1 instance_id={{ item.id }} name=baseami-{{ timestamp.stdout }} wait=yes wait_timeout=600

    with_items:

      - "{{ ec2.instances }}"

    register: instance

  - name: Delete the instance now that the AMI is created

    ec2:

      region: ap-southeast-1

      instance_ids: "{{ ec2.instance_ids }}"

      state: 'absent'

To view this discussion on the web visit https://groups.google.com/d/msgid/ansible-project/910c13a9-bb28-4ba7-8ebb-4a3638bc457c%40googlegroups.com.