print template variable

Archives Ansible Project
1

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 %}

2

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}

3

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.

4

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

5

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

6

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?

7

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