Ansible：如何存储json_query的结果？

Question

In the Ansible documentation on filters , the following example is shown, which executes a JSON query on a data structure, selecting certain fields name and port :

- name: "Display all server ports and names from cluster1"
  debug: var=item
  with_items: "{{domain_definition|json_query(server_query)}}"
  vars:
    server_query: "domain.server[?cluster=='cluster2'].{name: name, port: port}"

I managed to use this logic to parse the JSON response of a REST service, but I would like to not only print out the result, but reuse it several times again during my playbook.

How is it possible to persist the above variable var for later use?

Answer 1

Just replace debug call with set_fact . For example:

- name: "Display all server ports and names from cluster1"
  set_fact:
    'name_{{ item.name }}': '{{ item.port }}'
  with_items: "{{domain_definition|json_query(server_query)}}"
  vars:
    server_query: "domain.server[?cluster=='cluster2'].{name: name, port: port}"

This will generate two persistent facts (based on docs data): name_server21 with value 9080 and name_server22 = 9090 .