如何从包含 YAML 的字符串中读取 Ansible 变量？

Question

我的任务是运行调用 uri 获取包含 YAML 片段的 JSON 文件（它是从 Rancher API 获得的）。我可以使用以下任务提取 YAML 片段

- name: generate_stack_call_body.yml read docker compose from catalog
  set_fact:
    docker_compose: '{{ template_detail|json_query(dc_query) }}'

当我运行 ansible调试策略时，它表明我的docker_compose变量包含

(debug) p vars['docker_compose']
u"consul:\n  labels:\n    io.rancher.container.hostname_override: container_name\n    io.rancher.container.pull_image: always\n    io.rancher.container.hostname_override: container_name\n    io.rancher.scheduler.global: 'true'\n  stdin_open: true\n  image: registry.mycompany.com/my-project/consul-rancher:0.9.0\n  volumes:\n  - /data/consul:/consul/data\nload-balancer:\n  ports:\n  - 8500:8500\n  labels:\n    io.rancher.container.hostname_override: container_name\n    io.rancher.scheduler.global: 'true'\n  stdin_open: true\n  image: rancher/load-balancer-service\n  links:\n
  - consul:consul\n"

对我来说这看起来像是有效的 YAML。

因此，我想应该可以将该值解释为有效的 Ansible 变量。

但是我怎样才能将它解释为一个变量呢？

我以后如何将该变量放回字符串中？

Answer 1

But how can I have it interpreted as a variable?

set_fact:
  docker_compose: '{{ template_detail | json_query(dc_query) | from_yaml }}'

And how can I later put back that variable in a string?

{{ docker_compose | to_yaml }}

Reference

如何从包含 YAML 的字符串中读取 Ansible 变量？

How to read an Ansible variable from a string containing YAML?

ansible

yaml

ansible-template