display-pool-members.yml

---
- name: "List pool members"
  hosts: lb
  gather_facts: false
  connection: local

  tasks:
    - name: Query BIG-IP facts
      f5networks.f5_modules.bigip_device_info:
        provider:
          server: "{{private_ip}}"
          user: "{{ansible_user}}"
          password: "{{ansible_password}}"
          server_port: 8443
          validate_certs: false
        gather_subset:
          - ltm-pools
      register: bigip_device_facts

    - name: "View complete output"
      debug: "msg={{bigip_device_facts}}"

    - name: "Show members belonging to pool"
      debug: "msg={{item}}"
      loop: "{{bigip_device_facts.ltm_pools | community.general.json_query(query_string)}}"
      vars:
        query_string: "[?name=='http_pool'].members[*].name[]"