accessing a variable declared for host with {{ }} does not work

[i iordanov]

Hey guys,

If I have the following in an inventory file:

[somehostgroup]
somehost somevariable=1234

I can access the variable with:
${somevariable}

But I cannot access the variable with:
{{ somevariable }}

as I would expect. Is this expected?

Many thanks!
iordan

[David Karban]

Hi,

which version of ansible are you using?

David

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David Karban
Specialista na správu linuxových serverů
www.karban.eu

[i iordanov]

Hi David,

I'm using a package built from the devel branch a couple of days ago.
I.e. cutting edge.

Thanks!
iordan

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[Michael DeHaan]

This should be impossible as there is no legacy variable support on devel, and it's a pretty basic declaration.

Can we see the task, template, output, etc?

-- Michael

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[i iordanov]

1) My inventory file:

[ec2hosts]
10.130.0.123 instance-id=i-01234567

2) My yaml file, delete-instance.yml that *works*, adapted from an
ansible example:

---
- hosts: ec2hosts
gather_facts: True
connection: local
vars:
ec2_access_key: --DELETED--
ec2_secret_key: --DELETED--
region: "us-east-1"
tasks:
- name: destroy all instances
ec2: state='absent'
aws_access_key={{ ec2_access_key }}
aws_secret_key={{ ec2_secret_key }}
region={{ region }}
instance_ids=${instance-id}
wait=true

3) If I change the line that contains ${ansible_ec2_instance-id} above to:

instance_ids={{ instance-id }}

I get this error:

TASK: [destroy all instances] *************************************************
fatal: [10.130.0.123] => unable to look up a name or access an
attribute in template string

FATAL: all hosts have already failed -- aborting


Thank you very much!
iordan

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[Petros Moisiadis]

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'instance-id' seems to be an invalid identifier for jinja because of the dash ('-') character.
Take a look at: http://jinja.pocoo.org/docs/api/#identifier-naming

Try to rename your variable to 'instance_id' (replace dash '-' with underscore '_').

[Michael DeHaan]

Yep, that would be it, good catch :)

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[i iordanov]

Hey,

Indeed, that does seem to be the case, thanks!

The not-so-important question of why it still worked with $() even
though that support shouldn't be there, but I'm not concerned.

Many thanks!
iordan

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