Register Variable in Ansible

Question

Hi I'm new in Ansible and I'm having some problems using registered variables.

The problem is that I have multiple server with different operating systems.

I use roles to separate them, but in a case where there are no servers of one kind a conditional gives me an error saying that I must put an expression that evaluates to True or False.

This is the code with the problem.

 - name: Checking if Sources are Available
   action: shell echo a$(cat /etc/apt/sources.list | grep $(echo   'http://url/${ansible_distribution}/stable' | tr "[:upper:]" "[:lower:]"  ))
   register: sources
   ignore_errors: True

 - name: Adding source.
   action: shell echo "deb http://url/${ansible_distribution}/stable      ${ansible_lsb.codename} main" | tr "[:upper:]" "[:lower:]" >> /etc/apt/sources.list
   when: "ansible_os_family == 'RedHat' and sources.stdout == 'a'"

The error that gives me is this one:

fatal: [192.168.1.114] => Conditional expression must evaluate to True or False: ({% if     ansible_os_family == 'RedHat' and sources.stdout == 'a' %} True {% else %} False {% endif   %}) and ({% if ansible_os_family == 'Debian' %} True {% else %} False {% endif %})
fatal: [192.168.1.141] => Conditional expression must evaluate to True or False: ({% if ansible_os_family == 'RedHat' and sources.stdout == 'a' %} True {% else %} False {% endif   %}) and ({% if ansible_os_family == 'Debian' %} True {% else %} False {% endif %})

 FATAL: all hosts have already failed -- aborting

I already tried these ones: when: sources.stdout is defined and source.stdout == a only_if: sources.stdout is defined and source.stdout == a

And this gives me the same error.

I'm Using Ansible 1.3 in Ubuntu 13.04 To check this out I used ansible --version

Hope you can help me. Greetings

Solution

i think this is related to this issue: https://github.com/ansible/ansible/issues/3460

Seems to be fixed now in current dev version of ansible.