Ansible playbook处理程序未通过notify语句启动服务

我不明白或不明白我做错了什么，但我似乎无法让我的ansible playbook在ubuntu服务器上启动rng工具服务

environment:
    remote server (configured): Ubuntu 14.04.1 LTS
    server with playbook: Debian GNU/Linux 7.6 (wheezy)
    > apt-cache policy ansible
    ansible:
      Installed: 1.7-0.git201406241728~unstable
      Candidate: 1.7-0.git201406241728~unstable
      Version table:
      *** 1.7-0.git201406241728~unstable 0
            100 /var/lib/dpkg/status

我的文件夹结构如下所示：

tasks/main.yml
tasks/packages.yml that is included from the main.yml file
handlers/main.yml
files/rng-tools    

TASK: [debian-repository | install common packages] ***************************
ok: [debian.home.dr] => (item=gnupg,rng-tools,reprepro,dpkg-sig,nginx) => {"changed": false, "item": "gnupg,rng-tools,reprepro,dpkg-sig,nginx"}

TASK: [debian-repository | copy urandom default conf file] ********************
ok: [debian.home.dr] => {"changed": false, "dest": "/etc/default/rng-tools", "gid": 0, "group": "root", "md5sum": "45ed1b1ee174494442296fdd262f3b09", "mode": "0644", "owner": "root", "path": "/etc/default/rng-tools", "size": 815, "state": "file", "uid": 0}

PLAY RECAP ********************************************************************
debian.home.dr             : ok=12   changed=2    unreachable=0    failed=0

我正在使用playbook安装包rng tools，它是在执行后安装的

- name: install common packages
  apt: name={{ item }}  state=present
  with_items:
    - gnupg
    - rng-tools
    - reprepro
    - dpkg-sig
    - nginx

是的，我正在安装多个软件包，但它们都已正确安装

安装后，我使用以下方式复制/etc/default/rng tools文件：

- name: copy urandom default conf file
  copy: src="rng-tools" dest="/etc/default/rng-tools"
  notify: start rng-tools 

您可以注意到，我在那里编写了

notify:restart rng tools

来启动服务

我的handlers/main.yml文件如下所示：

---
# Handler for rng-tools
- name: start rng-tools
  service: name=rng-tools state=started

- name: restart rng-tools
  service: name=rng-tools state=restarted

- name: stop rng-tools
  service: name=rng-tools state=stopped

- name: reload rng-tools
  service: name=rng-tools state=reloaded

运行剧本的日志生成以下内容：

tasks/main.yml
tasks/packages.yml that is included from the main.yml file
handlers/main.yml
files/rng-tools    

TASK: [debian-repository | install common packages] ***************************
ok: [debian.home.dr] => (item=gnupg,rng-tools,reprepro,dpkg-sig,nginx) => {"changed": false, "item": "gnupg,rng-tools,reprepro,dpkg-sig,nginx"}

TASK: [debian-repository | copy urandom default conf file] ********************
ok: [debian.home.dr] => {"changed": false, "dest": "/etc/default/rng-tools", "gid": 0, "group": "root", "md5sum": "45ed1b1ee174494442296fdd262f3b09", "mode": "0644", "owner": "root", "path": "/etc/default/rng-tools", "size": 815, "state": "file", "uid": 0}

PLAY RECAP ********************************************************************
debian.home.dr             : ok=12   changed=2    unreachable=0    failed=0

问题是该服务从未启动，我与

sudo ps aux | grep rng
root 29392  0.0  0.0  11740   884 pts/1    S+   22:45   0:00 grep rng

当我执行

sudo服务rng工具启动时

会启动，而且我可以看到流程运行良好

~:sudo service rng-tools start
Starting Hardware RNG entropy gatherer daemon: rngd.
~:sudo ps aux | grep rng
root     29431  0.0  0.0   8964   336 ?        Ss   22:47   0:00 /usr/sbin/rngd -r /dev/urandom
root 29433  0.0  0.0  11740   880 pts/1    S+   22:47   0:00 grep rng

我尝试了很多事情，比如评论所有的处理程序，除了一个。如果我在复制文件后输入命令类型，并且该命令启动了服务运行，那么这似乎不是权限问题，但不知何故我无法理解。 另外，使用handlers/main.yml是正确的，所以我相信我做得对

---

你知道为什么我不能用剧本开始吗？

更改：false

是解开谜团的关键：

TASK: [debian-repository | copy urandom default conf file] ********************
ok: [debian.home.dr] => {"changed": false, "dest": "/etc/default/rng-tools", "gid": 0, "group": "root", "md5sum": "45ed1b1ee174494442296fdd262f3b09", "mode": "0644", "owner": "root", "path": "/etc/default/rng-tools", "size": 815, "state": "file", "uid": 0}

---

“notify:started”仅在文件复制发生时调用。

它起作用了。谢谢，我确实删除了

/etc/default/rng tools

文件并重新运行了playbook，现在它已启动。谢谢