Ansible为每个主机结果加上分隔符（=====）

在汇总文件里加上分隔符，每个主机的结果之间用一条横线区分，方便阅读。

优化后的 Playbook

保存为 ping_baidu.yml：

- hosts: webservers
  become: no
  tasks:
    - name: Ping www.baidu.com from each host
      shell: ping -c 4 www.baidu.com
      register: ping_result

    - name: Collect results
      set_fact:
        ping_summary: "{{ ping_summary | default([]) + ['===== ' + inventory_hostname + ' =====\n' + ping_result.stdout] }}"

- hosts: localhost
  gather_facts: no
  tasks:
    - name: Ensure result directory exists
      file:
        path: /tmp/ping_results
        state: directory
        mode: '0755'

    - name: Save all results into one file
      copy:
        content: "{{ hostvars | dict2items | selectattr('value.ping_summary','defined') | map(attribute='value.ping_summary') | sum(start=[]) | join('\n\n') }}"
        dest: /tmp/ping_results/all.log

---

执行

ansible-playbook -i /etc/ansible/hosts/inventory.ini ping_baidu.yml

---

结果文件 /tmp/ping_results/all.log

内容示例：

===== 10.0.19.207 =====
PING www.a.shifen.com (14.215.177.39) 56(84) bytes of data.
64 bytes from 14.215.177.39: icmp_seq=1 ttl=54 time=12.3 ms
64 bytes from 14.215.177.39: icmp_seq=2 ttl=54 time=11.9 ms

===== 10.0.19.208 =====
PING www.a.shifen.com (14.215.177.39) 56(84) bytes of data.
64 bytes from 14.215.177.39: icmp_seq=1 ttl=54 time=15.6 ms
64 bytes from 14.215.177.39: icmp_seq=2 ttl=54 time=14.8 ms