8

I'm currently installing Pear packages for PHP with Ansible like so:

- name: Add Phergie PEAR channel.
  command: pear channel-discover pear.phergie.org
  ignore_errors: yes

- name: Install Phergie and related plugins.
  command: pear install pear.phergie.org/{{ item }}
  with_items:
  - Phergie
  - Phergie_Plugin_AltNick
  ignore_errors: yes

The ignore_errors is required because pear always reports an error when running a command that's been run/completed successfully before (like:

TASK: [Add Phergie PEAR channel.] ********************************************* 
failed: [10.31.9.210] => {"changed": true, "cmd": ["pear", "channel-discover", "pear.phergie.org"], "delta": "0:00:01.089340", "end": "2013-12-27 10:16:25.640083", "item": "", "rc": 1, "start": "2013-12-27 10:16:24.550743"}
stdout: Channel "pear.phergie.org" is already initialized
...ignoring

TASK: [Install Phergie and related plugins.] ********************************** 
failed: [10.31.9.210] => (item=Phergie) => {"changed": true, "cmd": ["pear", "install", "pear.phergie.org/Phergie"], "delta": "0:00:03.698780", "end": "2013-12-27 10:16:30.337371", "item": "Phergie", "rc": 1, "start": "2013-12-27 10:16:26.638591"}
stdout: phergie/Phergie is already installed and is the same as the released version 2.1.0
install failed
...ignoring
failed: [10.31.9.210] => (item=Phergie_Plugin_AltNick) => {"changed": true, "cmd": ["pear", "install", "pear.phergie.org/Phergie_Plugin_AltNick"], "delta": "0:00:01.779589", "end": "2013-12-27 10:16:33.231524", "item": "Phergie_Plugin_AltNick", "rc": 1, "start": "2013-12-27 10:16:31.451935"}
stdout: phergie/Phergie_Plugin_AltNick is already installed and is the same as the released version 2.1.0
install failed
...ignoring

Is there a better (more idempotent) way to run pear commands, and not have to scroll through a bunch of big, red ignored errors?

4

3 回答 3

9

好的，所以在使用了 changed_when 属性之后，我终于找到了一个解决方案（在不同的剧本上进行测试，我安装的是 drush 而不是 Phergie，但问题/解决方案完全相同：

剧本：

- name: Setup drush PEAR channel.
  command: pear channel-discover pear.drush.org
  register: channel_result
  environment: proxy_env
  changed_when: "'initialized' not in channel_result.stdout"
  # TODO: This will always error out the first time it's run.
  failed_when: "'already initialized' not in channel_result.stdout"

- name: Install drush.
  command: pear install drush/drush
  register: drush_result
  environment: proxy_env
  changed_when: "'installed' not in drush_result.stdout"
  failed_when: "'6.2.0.0' not in drush_result.stdout"

Ansible 的新输出：

TASK: [Setup drush PEAR channel.] ********************************************* 
ok: [midwesternmac]

TASK: [Install drush.] ******************************************************** 
ok: [midwesternmac]

因此，现在在摘要中，Ansible 不会为每个服务器和每个 pear 命令报告额外的“更改”，而是仅在发生更改时才报告“更改”。有关 changed_when 和 failed_when （需要 Ansible >= 1.3）的更多文档（虽然很少）可在此处获得：Playbooks 中的错误处理

于 2013-12-31T04:37:47.147 回答
2

Starting from Ansible v2 there is an extra module for managing PEAR extensions: http://docs.ansible.com/ansible/pear_module.html

So now you can just use:

- pear: name=Net_URL2 state=latest
于 2016-01-25T17:21:08.267 回答
1 
- 名称：安装 drush。
  命令：pear upgrade drush/drush

不确定使用“升级”而不是“安装”是否能很好地转换为您领先的频道发现命令

于 2014-11-04T13:36:46.460 回答