使用Ansible将二进制文件添加到PATH [英] Add binaries to PATH with Ansible

问题描述

我正在尝试为

I'm trying to install the Kiex Version manager for the Elixir programming language using Ansible.

这些是我为此使用的戏剧:

These are the plays I use for this:

- name: Kiex Installation
  hosts: web
  gather_facts: false
  remote_user: deployer
  tasks:
    - shell: \curl -sSL https://raw.githubusercontent.com/taylor/kiex/master/install | bash -s
    - name: Add Kiex Bin to Path
      lineinfile:
        dest: /home/deployer/.bashrc
        regexp: '^test -s'
        line: '[[ -s "$HOME/.kiex/scripts/kiex" ]] && source "$HOME/.kiex/scripts/kiex"'
    - name: Reload Path
      shell: source /home/deployer/.bashrc
      args:
        executable: /bin/bash
    - shell: echo $PATH
      register: pathul
    - debug:
        var: pathul

- name: Elixir Installation
  hosts: web
  gather_facts: false
  remote_user: deployer
  tasks:
    - shell: echo $PATH
      register: pathul
    - debug:
        var: pathul
    - name: Install Elixir Version
      command: /home/deployer/.kiex/bin/kiex list
      args:
        executable: /bin/bash
        chdir: /home/deployer/
    - name: Set Elixir Version as Default
      shell: kiex default 1.4

Kiex的安装成功，如果我登录到远程计算机，只需使用kiex命令就可以运行它.之所以可以这样做，是因为我的二进制文件来自〜/.kiex/scripts/kiex".当我回显$PATH变量时，它会在其中显示kiex二进制路径/home/deployer/.kiex/bin:

The Installation of Kiex is a success and if I log in to the remote Machine I am able to run it simply by using the kiex command. I can do this because I sourced the binaries in "~/.kiex/scripts/kiex". When I echo the $PATH variable it shows the kiex binaries path /home/deployer/.kiex/bin in it:

$ echo $PATH
/home/deployer/.kiex/bin:/home/deployer/.kiex/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games

但是在上面显示的 Elixir安装中的kiex，kiex list甚至/home/deoployer/.kiex/bin/kiex list都失败，并显示以下消息:

However the kiex, kiex list and even the /home/deoployer/.kiex/bin/kiex list in the Elixir Installation Play shown above fail with the message:

TASK [Set Elixir Version as Default] *******************************************
fatal: [local-web-2]: FAILED! => {"changed": true, "cmd": "kiex default 1.4", "delta": "0:00:00.002042", "end": "2017-01-26 22:13:32.898082", "failed": true, "rc": 127, "start": "2017-01-26 22:13:32.896040", "stderr": "/bin/sh: 1: kiex: not found", "stdout": "", "stdout_lines": [], "warnings": []}

另外，通过ansible注册通过回声路径结果的pathul变量也不包含/home/deployer/.kiex/bin:

Also the pathul variable that registered the result of echoing the path via ansible doesn't contain /home/deployer/.kiex/bin:

"stdout": "/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games"

如何通过Ansible使kiex命令正常工作?

How can I make the kiex command work properly via Ansible?

推荐答案

只需使用完整的绝对路径，就像您在Install Elixir Version任务中尝试过的一样，但请注意，在示例中和在您发布的说明:

Just use the full, absolute path, like you tried in the Install Elixir Version task, but mind that you have a typo, both, in the example and in the explanation you posted:

command: /home/deoployer/.kiex/bin/kiex list

[]甚至/home/deoployer/.kiex/bin/kiex list []失败[s]

[ ] even the /home/deoployer/.kiex/bin/kiex list [ ] fail[s]

应该像第一次播放一样是deployer，而不是deoployer.

It should likely be deployer, like in the first play, not deoployer.

如果您提供正确的路径，则没有其他原因使Ansible失败并显示" kiex:not found "消息.

There is no reason otherwise for Ansible to fail with "kiex: not found" message, if you provide the correct path.

关于其他任务的说明:

• 引用man bash:

启动不是登录shell的交互式shell时，bash从~/.bashrc读取并执行命令(如果该文件存在).

When an interactive shell that is not a login shell is started, bash reads and executes commands from ~/.bashrc, if that file exists.

因此，当您使用Ansible执行任务时，甚至不会读取您的~/.bashrc，因为它不是交互式会话.

So your ~/.bashrc is not even read when you execute tasks with Ansible, because it's not an interactive session.

例如，这就是为什么您的pathul变量不包含在~/.bashrc中应用的更改的原因.

This is for example why your pathul variable does not contain changes applied in the ~/.bashrc.

以下两个任务运行单独的bash进程.第一项任务中的环境对第二项任务的环境没有影响:

The following two tasks run separate bash processes. The environment sourced in the first task has no influence on the environment of the second:

- name: Reload Path
  shell: source /home/deployer/.bashrc
  args:
    executable: /bin/bash
- shell: echo $PATH
  register: pathul

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