print template variable

[ddffgpmfn]

Trying to debug a template and want to display the data for a variable.

How can I do that from inside a template?

{% for foo in bar %}

  <print foo to stdout?>

{% endfor %}

[ddffgpmfn]

Trying to work out why this works:

TASK: [debug var=groups.security_group_app] ***********************************

Friday 17 April 2015  12:15:01 +0100 (0:00:00.301)       0:00:13.586 **********

ok: [52.17.198.95] => {

    "var": {

        "groups.security_group_app": [

            "52.xx.xx.xx",

            "52.xx.xx.xx"

        ]

    }

} 

But this doesn't:

{% for ec2_host_ip in groups.security_group_app %}

  {{ ec2_host_ip|pprint }}

{% endfor %}

fatal: [52.xx.xx.xx] => {'msg': "AnsibleUndefinedVariable: One or more undefined variables: ansible.runner.HostVars object has no element [u'52.xx.xx.xx', u'52.xx.xx.xx']", 'failed': True}

[Brian Coca]

you can do this:

{% for ec2_host_ip in groups.security_group_app %}
{{ ec2_host_ip}}

{% endfor %}

or

{{ groups.security_group_app|pprint}}

the combination of both does not make sense.




--
Brian Coca

[ddffgpmfn]

Can it be displayed on the playbook output? I'd prefer not to have to go and check the template each run during debug.

[Brian Coca]

then you don't want a template, use the debug: module.



--
Brian Coca

[ddffgpmfn]

I'm aware of the debug module, but I need to debug a temporary template variable.

Is the answer that it cannot be 'printed' to the console and you have to just watch the file?

[Dan Vaida]

If I recall correctly, the --diff flag might come in handy in your case.