Using ec2_vol with dynamic inventory

[Max León]

Hi,
I'm trying to create a playbook that will attach a volume to the specified instances and install casssandra as a cluster.

I have almost everything worked out but the ec2_vol part.

 # tasks file for cassandra
   - name: gather ec2 facts
      action: ec2_facts
      register: ec2_facts
 
   - debug: var=ec2_facts
 
   - name: Add volume for cassandra nodes
     local_action:
       module: ec2_vol
       instance: "{{ ansible_ec2_instance_id }}"
       volume_size: 50
       volume_type: gp2
       region: us-east-1
       device_name: /dev/xvdb

With that in mind I can see the ec2_facts of the tagged instances that I'm going to use in the cluster but when executed it doesn't recognized the ansible_ec2_instance_id variable that I can actually see when running the ec2_facts.

Any idea why?


Thank you.

[Joanna Delaporte]

Hi Max, 

Are you running this playbook with the ec2 instance as the remote target? 

You are missing the reference to the registered fact, I think:

  - name: gather ec2 facts
      action: ec2_facts
      register: ec2_facts
 
   - debug: var=ec2_facts
 
   - name: Add volume for cassandra nodes
     local_action:
       module: ec2_vol

       instance: "{{ ec2_facts.ansible_ec2_instance_id }}"

       volume_size: 50
       volume_type: gp2
       region: us-east-1
       device_name: /dev/xvdb

I haven't used the ec2_facts module yet myself, however, since I usually provision and register facts from the ec2 module, so I might be wrong. 

Joanna

[Max Leon]

Hi Joanna,

Thanks for your post, I just tried your suggestion but still isn't working.  But you pointed me in the right direction.  I was running ec2_facts as a local action which was incorrect and using a tripple debug flag I noticed that aws_access_key and aws_secret_key were null, seems kind of dump having to set them up as variables for ec2_vol to work, but after doing that but it worked, bellow how I end up doing it

---

# tasks file for cassandra
  - name: gather ec2 facts
    action: ec2_facts
    register: ec2_facts
 
    - debug: var=ec2_facts
 
  - name: Add volume for cassandra nodes

    action:
       module: ec2_vol
       instance: "{{ ansible_ec2_instance_id }}"
       volume_size: 50
       volume_type: gp2
       region: us-east-1
       device_name: /dev/xvdb

       aws_access_key: "{{ aws_access_key }}"
       aws_secret_key: "{{ aws_secret_key }}"