docker - Escaping double curly braces in Ansible

Question

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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"

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1 Answer

深蓝 · Answer 1 · 2021-10-23T18:30:32+0000

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"