Ansible ERROR！ “重试”不是TaskInclude的有效属性

Question

我的要求是将脚本stop-all运行多次（重试5次，直到ps -fu user1 |wc -l的输出小于2。

我为同一本书写了以下有趣的剧本：

cat stop.yml

  - hosts: dest_nodes
    tasks:
      - name: Start service
        include_tasks: "{{ playbook-dir }}/inner.yml"
        retries: 5
        delay: 4
        until: stopprocesscount.stdout is version('2', '<')


cat inner.yml

      - name: Start service
          shell: ~/stop-all
          register: stopprocess

      - name: Start service
          shell: ps -fu user1 |wc -l
          register: stopprocesscount

但是，在运行剧本时出现以下错误。

ERROR! 'retries' is not a valid attribute for a TaskInclude

The error appears to be in '/app/playbook/stop.yml': line 19, column 9, but may
be elsewhere in the file depending on the exact syntax problem.

The offending line appears to be:


      - name: Start service
        ^ here

你能建议吗？

Answer 1

首先，纠正inner.yml中任务的缩进。其次，从retries中删除delay，until和stop.yml并将它们移至特定任务，因为它们是任务级别参数。

由于您需要基于另一个任务重试一个任务，因此您可以将脚本和命令组合在一起并提取wc -l命令的结果，如下所示：

由于stdout_lines将包含字符串列表，并且版本需要int，因此需要进行转换。

inner.yml

  - name: Start service
    shell: ~/stop-all; ps -fu user1 | wc -l
    register: stopprocesscount
    retries: 5
    delay: 4
    until: stopprocesscount.stdout_lines[stopprocesscount.stdout_lines | length - 1] | int  is version('2', '<')

stop.yml

  - hosts: dest_nodes
    tasks:
      - name: Start service
        include_tasks: "{{ playbook-dir }}/inner.yml"