在处理程序中使用块 - Ansible

Question

我正在为 Ansible 角色编写一个处理程序来停止和启动 Docker。 stop在handlers/main.yml中是这样写的

- name: stop docker
  block:
    - name: stop docker (Debian based)
      block:
        - name: stop service docker on debian, if running
          systemd: name=docker state=stopped
        - name: stop service docker.socket on debian, if running
          systemd: name=docker.socket state=stopped
      when: ansible_pkg_mgr == "apt"
  
    - name: stop docker (CentOS based)
      block:
        - name: stop service docker on CentOS, if running
          service:
            name: docker
            state: stopped
        - name: stop service docker.socket on CentOS, if running
          service:
            name: docker
            state: stopped
      when: ansible_pkg_mgr == "yum"

然后在我的任务/主文件中，我调用 stop docker

---
- name: test
  command: echo "Stopping docker" 
  notify:
    - stop docker

我收到的错误是ERROR! Unexpected Exception, this is probably a bug: 'Block' object has no attribute 'notified_hosts'

如果我在剧本中将其作为任务运行，它就可以工作。

有没有办法在 Ansible 处理程序中使用 block？

Answer 1

根据您的错误消息，Ansible 似乎没有为 handlers 提供 block 功能。

相反，您可以使用其他方法

handlers:
  - name: Stop Docker
    include_tasks: tasks/stop_docker.yaml

并将逻辑放入单独的任务文件中。

更多信息

• Ansible Issue #14270
• Ansible Issue #20493
• Ansible Issue #42353
• What's the difference between include_tasks and import_tasks?

Answer 2

对我来说，block 和import_tasks 都没有用（见https://docs.ansible.com/ansible/latest/user_guide/playbooks_blocks.html）。

- name: do something else in somewhere else:
  include_tasks: roles/jh_load_services/tasks/main.yml

如果这可以帮助