how to set defaults for ec2_facts when not in AWS ???

[Nicolas G]

Hi,

We have our ansible playbooks working with no problem to deploy our servers in Amazon ec2. One of the ansible modules we use is the ec2_facts in order to configure some files , as for example we use the {{ ansible_ec2_placement_availability_zone }}  value.

There is a chance we need to deploy some of our servers on a different cloud provider or on bare metal servers, in that case the ec2_facts module will fail.

I know I could just add an ignore_errors on the ec2_facts task but we need to make sure when in AWS environment the ec2_facts are populated successfully so I'm wondering how can we set default values when we run a playbook in a non AWS environment ? 

For example I would like to set the bellow without using "when:" or specifying in advance if the inventory hosts are in ec2 or not :

ansible_ec2_placement_availability_zone : NA 

Any ideas ? 

Regards,

N.

[Michael DeHaan]

 "There is a chance we need to deploy some of our servers on a different cloud provider or on bare metal servers, in that case the ec2_facts module will fail."

I would consider constraining the ec2 configuration items to a specific role and maybe do:

- hosts: ec2_webservers

  roles:

     - ec2_config

     - other_config

And in another playbook, maybe you apply all roles but the ec2 step.

If you wanted a fact on EC2 in a different variable, you could use the "set_fact" module to assign it from a different source, and leave the other roles independent.

Altenratively, you could have steps like:

when: ansible_ec2_blah is defined

or "is not defined"

using conditionals.

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