data-structures - Ansible在dict中的列表中显示正确的结果和条件

Question

我如何在 with_items 中从 ping 中选择正确的“IP”

Ansible main.yml 代码：

IP_server:
  - north:
      192.168.1.1
      192.168.1.2

- name: Ping command
  shell:
    cmd: "ping -c -w 2 {{ item }}"
  register: "server_ok"
  ignore_errors: yes
  with_items:
    - "{{ IP_server.north }}"
  loop_control:
   loop_var: "correct_server"

- name: "Selected IP"
  debug:
    msg: "{{ IP_server.north.msg }}"
  when: IP_server.north.msg.0.rc == 0

结果：始终显示第一个 IP：192.168.1.1

---

期望的结果：“when”中的条件“....rc==0”选择的正确IP。

---

非常感谢！

标签： data-structuresansibleconditional-statements

Answer 1

例如

- hosts: localhost
  vars:
    IP_server:
      - 10.1.0.61
      - 10.1.0.62
      - 10.1.0.99
  tasks:
    - command: "ping -c 1 {{ item }}"
      register: server_ok
      ignore_errors: yes
      loop: "{{ IP_server }}"
    - debug:
        msg: "{{ server_ok.results|
                 selectattr('rc', 'eq', 0)|
                 map(attribute='item')|
                 list }}"

给

PLAY [localhost] ****************************************************************

TASK [command] ******************************************************************
changed: [localhost] => (item=10.1.0.61)
changed: [localhost] => (item=10.1.0.62)
failed: [localhost] (item=10.1.0.99) => changed=true 
  ansible_loop_var: item
  cmd:
  - ping
  - -c
  - '1'
  - 10.1.0.99
  delta: '0:00:03.078826'
  end: '2021-02-25 10:50:17.192211'
  item: 10.1.0.99
  msg: non-zero return code
  rc: 1
  start: '2021-02-25 10:50:14.113385'
  stderr: ''
  stderr_lines: <omitted>
  stdout: |-
    PING 10.1.0.99 (10.1.0.99) 56(84) bytes of data.
    From 10.1.0.27 icmp_seq=1 Destination Host Unreachable
  
    --- 10.1.0.99 ping statistics ---
    1 packets transmitted, 0 received, +1 errors, 100% packet loss, time 0ms
  stdout_lines: <omitted>
...ignoring

TASK [debug] ********************************************************************
ok: [localhost] => 
  msg:
  - 10.1.0.61
  - 10.1.0.62