Escaping double curly braces in Ansible

Question

How to escape double curly braces in Ansible 1.9.2?

For instance, how can I escape double curly braces in the following shell command?

- name: Test 
         


        

Answer 1

I was unable to get @Ben's answer to work (shell: !unsafe ...)

What follows here is a complete (and working!) answer to the OP's question, updated for Ansible >2.0

---
# file: play.yml

- hosts: localhost
  connection: local
  gather_facts: no
  vars:
    # regarding !unsafe, please see:
    # https://docs.ansible.com/ansible/latest/user_guide/playbooks_advanced_syntax.html
    #
    - NetworkSettings_IPAddress: !unsafe "{{.NetworkSettings.IPAddress}}"
  tasks:
    - shell: "docker inspect --format '{{NetworkSettings_IPAddress}}' instance1"
      register: out
    - debug: var="{{item}}"                                                                                                   
      with_items:                                                                                                             
        - out.cmd                                                                                                             
        - out.stdout                                                                                                          

outputs: ([WARNINGS] removed)

# ansible-playbook play.yml
PLAY [localhost] ***************************************************************

TASK [shell] *******************************************************************
changed: [localhost]

TASK [debug] *******************************************************************
ok: [localhost] => (item=out.cmd) => {
    "item": "out.cmd", 
    "out.cmd": "docker inspect --format '{{.NetworkSettings.IPAddress}}' instance1"
}
ok: [localhost] => (item=out.stdout) => {
    "item": "out.stdout", 
    "out.stdout": "172.17.0.2"
}

PLAY RECAP *********************************************************************
localhost                  : ok=2    changed=1    unreachable=0    failed=0   

---

# ansible --version | head -1
ansible 2.6.1