使用Ansible，如何安装PythonBrew系统？

Question

我正在尝试创建一个带有Ansible (v1.3.3)的剧本，以便按照Pythonbrew文件中的说明在Debian服务器上安装Pythonbrew。

我能够安装Python，但是我无法安装我想要的Python的特定版本。我怀疑这个问题与当前运行的shell环境有关。

这是我的剧本：

- name: Install and configure PythonBrew
  hosts: dev
  user: root
  vars_files:
    - vars.yml
  gather_facts: false

  tasks:
    - name: Install PythonBrew Debian packages
      apt: pkg=${item} state=installed update-cache=yes
      with_items: ${pythonbrew_packages}

    - name: Install PythonBrew system-wide
      shell: curl -kL http://xrl.us/pythonbrewinstall | bash creates=/usr/local/pythonbrew executable=/bin/bash

    - name: Update bashrc for PythonBrew
      lineinfile:
        dest=~/.bashrc
        regexp='^'
        line='[[ -s $HOME/.pythonbrew/etc/bashrc ]] && source $HOME/.pythonbrew/etc/bashrc'
        state=present
        create=True

    - name: Install python binary
      shell: pythonbrew install -v ${python_version} executable=/bin/bash

当我运行这个剧本时，它会失败，输出如下

失败: devserver => {“已更改”：真，"cmd"："pythonbrew -v 2.7.3 "，"delta"："0:00:00.016639"，"end"："2013-10-11 15:21:40.989677"，"rc"：127，"start"："2013-10-11 15:21:40.973038"} stderr: /bin/bash: pythonbrew:命令找不到

在过去的一个小时里，我一直在调整事情，但没有结果。有人对此有什么建议吗？

Answer 1

通过偷看PythonBrew安装脚本，我就能弄明白这一点。(正好赶上对PythonBrew的否定!)

下面是在不需要人工干预的情况下安装PythonBrew的剧本。这可能是任何试图脚本PythonBrew自动安装的人感兴趣的。

vars.yml

#
# Python/PythonBrew Settings
# TODO: replace old-style Ansible ${vars} with jinja-style {{ vars }}
#
project_name: MY_PROJECT

python:
  version: 2.7.3

pythonbrew:
  root: /usr/local/pythonbrew
  bashrc_path: $HOME/.pythonbrew/etc/bashrc

  packages:
    - curl
    - zlib1g-dev
    - libsqlite3-dev
    - libssl-dev
    - libxml2
    - libxml2-dev
    - libxslt1-dev
    - libmysqlclient-dev
    - libbz2-dev

pythonbrew.yml

---

#
# Install and Configure PythonBrew
#
- name: Install and configure PythonBrew
  hosts: MY_HOST
  user: root
  vars_files:
    - vars.yml
  gather_facts: false

  tasks:
    - name: Install PythonBrew Debian packages
      apt: pkg=${item} state=installed update-cache=yes
      with_items: ${pythonbrew.packages}

    - name: Install PythonBrew system-wide
      shell: curl -kL http://xrl.us/pythonbrewinstall | bash
        executable=/bin/bash
        creates=${pythonbrew.root}

    - name: Update bashrc for PythonBrew
      lineinfile:
        dest=/root/.bashrc
        regexp='^'
        line='[[ -s ${pythonbrew.bashrc_path} ]] && source ${pythonbrew.bashrc_path}'
        state=present
        create=True

    # This step allows install to continue without new shell. Pulled from:
    # https://github.com/utahta/pythonbrew/blob/master/pythonbrew/installer/pythonbrewinstaller.py#L91
    - name: Install python binary
      shell: export PYTHONBREW_ROOT=${pythonbrew.root}; source ${pythonbrew.root}/etc/bashrc; pythonbrew install ${python.version}
        executable=/bin/bash

    - name: Switch to python version
      shell: export PYTHONBREW_ROOT=${pythonbrew.root}; source ${pythonbrew.root}/etc/bashrc; pythonbrew switch ${python.version}
        executable=/bin/bash