Escaping double curly braces in Ansible

docker jinja2 ansible
Davide Guerri picture Davide Guerri · Aug 28, 2015 · Viewed 44.6k times · Source

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 
  shell: "docker inspect --format '{{ .NetworkSettings.IPAddress }}' instance1"

Answer

udondan picture udondan · Aug 29, 2015

Whenever you have problems with conflicting characters in Ansible, a rule of thumb is to output them as a string in a Jinja expression.

So instead of {{ you would use {{ '{{' }}:

- debug: msg="docker inspect --format '{{ '{{' }} .NetworkSettings.IPAddress {{ '}}' }}' instance1"

Topic "Escaping" in the Jinja2 docs.

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