ansible 任务为 logrotate 定义文件生成奇怪的语法

Question

我在 ubuntu 14.04 中使用 ansible logrotate 定义，其定义如下

---

- name: dependencies
  apt: pkg={{item}} state=latest
  with_items:
    - unzip
    - jq

- name: check if already downloaded
  stat: path={{nomad_download_folder}}/{{nomad_archive}}
  register: nomad_archive_stat

- name: download
  get_url: >
    url={{nomad_download}}
    dest={{nomad_download_folder}}
    sha256sum={{nomad_checksum}}
  register: nomad_downloaded
  when: nomad_archive_stat.stat.exists == false

- name: group
  group: >
    name={{nomad_group}}
    state=present
  register: nomad_group_created

# On Nomad schedulers
- name: user
  user: >
    home={{nomad_home}}
    name={{nomad_user}}
    system=yes
    groups={{nomad_group}}
    append=yes
  when: (nomad_group_created | changed) and (nomad_is_server == true)

# On Nomad runners
- name: user
  user: >
    home={{nomad_home}}
    name={{nomad_user}}
    system=yes
    groups={{nomad_group}},docker
    append=yes
  when: (nomad_group_created | changed) and (nomad_is_server == false)

- name: directories
  file: >
    state=directory
    path={{item}}
    owner={{nomad_user}}
    group={{nomad_group}}
  with_items:
    - "{{nomad_home}}"
    - "{{nomad_home}}/bin"
    - "{{nomad_config_dir}}"

- name: check for log directory
  stat: path={{nomad_log_file | dirname}}
  register: nomad_log_directory_stat

- name: create log directory
  file: >
    state=directory
    path={{nomad_log_file | dirname}}
    owner={{nomad_user}}
    group={{nomad_group}}
  when: not nomad_log_directory_stat.stat.exists

- name: touch log file
  file: >
    state=touch
    path={{nomad_log_file}}
    owner={{nomad_user}}
    group={{nomad_group}}
  changed_when: false

- name: install
  unarchive: >
    src={{nomad_download_folder}}/{{nomad_archive}}
    dest={{nomad_home}}/bin
    copy=no
  when: nomad_downloaded | changed

- name: link executable in PATH
  file: >
    state=link
    src={{nomad_home}}/bin/nomad
    dest=/usr/local/bin/nomad

- name: set ownership
  file: >
    state=directory
    path={{nomad_home}}
    owner={{nomad_user}}
    group={{nomad_group}}
    recurse=yes
  when: nomad_downloaded | changed

- name: nomad config file
  template: >
    src=nomad.conf.j2
    dest={{nomad_config_file}}
    owner={{nomad_user}}
    group={{nomad_group}}
    mode=0755
  notify:
    - restart nomad

- name: copy nomad upstart script
  template: >
    src=nomad.upstart.conf.j2
    dest=/etc/init/nomad.conf
    owner={{nomad_user}}
    group={{nomad_group}}
    mode=0755
  notify:
    - restart nomad

- name: rotate log file
  logrotate: name=nomad path={{nomad_log_file}}
  args:
    options:
      - daily
      - missingok
      - rotate 3
      - compress
      - delaycompress
      - copytruncate
      - notifempty

这会导致生成具有下面奇怪语法的文件。

sudo cat /etc/logrotate.d/nomad

# Generated by Ansible.
# Local modifications will be overwritten.

/var/log/nomad.log {
  [
  '
  d
  a
  i
  l
  y
  '
  ,

  '
  m
  i
  s
  s
  i
  n
  g
  o
  k
  '
  ,

  '
  r
  o
  t
  a
  t
  e

  3
  '
  ,

  '
  c
  o
  m
  p
  r
  e
  s
  s
  '
  ,

  '
  d
  e
  l
  a
  y
  c
  o
  m
  p
  r
  e
  s
  s
  '
  ,

  '
  c
  o
  p
  y
  t
  r
  u
  n
  c
  a
  t
  e
  '
  ,

  '
  n
  o
  t
  i
  f
  e
  m
  p
  t
  y
  '
  ]
}

由于这个语法错误，我每天早上都会收到很多电子邮件。以下是有关服务器的更多详细信息。

$sudo ansible --version
ansible 2.2.1.0
  config file = /etc/ansible/ansible.cfg
  configured module search path = Default w/o overrides
$lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description:    Ubuntu 14.04.4 LTS
Release:    14.04
Codename:   trusty

Answer 1

如果我从 github 克隆该模块并创建如下剧本：

- hosts: localhost
  roles:
    - logrotate
  tasks:
    - logrotate: name=myapp path=/tmp/myapp.log
      args:
        options:
          - daily
          - rotate 8
          - postrotate
          - exec script
          - endscript

它运行正常，并生成如下 logrotate 配置文件：

# Generated by Ansible.
# Local modifications will be overwritten.
/tmp/myapp.log {
  daily
  rotate 8
  postrotate
  exec script
  endscript
}

如果您看到使用相同剧本的不同行为，您是否会更新您的问题以指出您正在使用哪个版本的 ansible（以及您在哪个平台上运行它）？

顺便说一句，您使用的语法有点奇怪；您将传统的 key=value 语法与首选的 YAML 字典语法混合在一起。它不会对操作产生影响（无论哪种方式，剧本的工作方式都相同），但一般来说，您会这样写：

- hosts: localhost
  roles:
    - logrotate
  tasks:
    - logrotate:
        name: myapp
        path: /tmp/myapp.log
        options:
          - daily
          - rotate 8
          - postrotate
          - exec script
          - endscript