我正在尝试运行一个相对简单的Ansible剧本,以通过Vagrant设置Ubuntu VM。大致可分为3个步骤:

  • 更新并安装基本软件包
  • 将rbenv安装到指定用户的家庭
  • 通过rbenv为指定用户
  • 安装指定的Ruby版本

    前两个步骤很好,但是我正在努力。使用其他剧本作为引用(rbenvnvm之一),我创建了以下基本剧本:
    ---
    - hosts: all
      vars:
        user: joe_bloggs
        ruby_version: 2.1.5
    
      tasks:
    
        #
        # System
        #
    
        - name: Update apt cache
          sudo: yes
          apt: update_cache=yes cache_valid_time=86400
    
        - name: Upgrade existing system packages
          sudo: yes
          apt: upgrade=dist
    
        - name: Install essential system packages
          sudo: yes
          apt: name={{ item }} state=latest
          with_items:
            - git
            - curl
            - openssl
            - build-essential
    
        - name: Add user
          sudo: yes
          user: name={{user}} shell=/bin/bash groups=sudo
    
        #
        # rbenv
        #
    
        - name: Install rbenv | Clone repo
          sudo: yes
          sudo_user: "{{ user }}"
          git: repo=https://github.com/sstephenson/rbenv.git dest=~/.rbenv accept_hostkey=yes update=yes
    
        - name: Install rbenv | Create plugins directory
          sudo: yes
          sudo_user: "{{ user }}"
          file: path=~/.rbenv/plugins/ mode=0755 state=directory
    
        - name: Install rbenv | Install ruby-build plugin
          sudo: yes
          sudo_user: "{{ user }}"
          git: repo=git://github.com/sstephenson/ruby-build.git dest=~/.rbenv/plugins/ruby-build accept_hostkey=yes
    
        - name: Install rbenv | Add path to profile
          sudo: yes
          sudo_user: "{{ user }}"
          lineinfile: line='export PATH="$HOME/.rbenv/bin:$PATH"' regexp="\$HOME\/\.rbenv\/bin:\$PATH" dest=~/.bashrc
    
        - name: Install rbenv | Enable shims in profile
          sudo: yes
          sudo_user: "{{ user }}"
          lineinfile: line='eval "$(rbenv init -)"' regexp="rbenv init \-" dest=~/.bashrc
    
        - name: Install Ruby | Install version
          sudo: yes
          sudo_user: "{{ user }}"
          shell: rbenv install {{ ruby_version }} executable=/bin/bash
    
        - name: Install Ruby | Set default version and rehash
          sudo: yes
          sudo_user: "{{ user }}"
          shell: rbenv global {{ ruby_version }} && rbenv rehash executable=/bin/bash
    

    运行上面的剧本时遇到错误:
    stderr: /bin/bash: rbenv: command not found
    

    有没有一种优雅的方式可以通过使用Ansible作为用户通过使用他们的shell和环境变量来运行命令?

    我尝试添加-i sudo标志和类似sudo -iu {{user}} rbenv install ...的命令,但是我还没有运气。

    我可以通过指定rbenv可执行文件的完整路径来运行Ruby安装,但是这种技术并不总是适用的(某些工具可能不提供单个可执行文件)。

    最佳答案

    在尝试在 Vagrant 的盒子上使用Ansible 2.1使用rbenv安装ruby-2.2.3时遇到了同样的问题。

    rbenv安装在ubuntu上名为rails的用户上,该用户没有sudo权限,但是当ansible连接到我的ubuntu盒时,它将释放环境。 $ PATH在/home/rails/.bashrc中定义,默认情况下仅为ansible_env.PATH

    假设您已经按照以下步骤安装了rbenv:

    git clone git://github.com/sstephenson/rbenv.git .rbenv
    echo 'export PATH="$HOME/.rbenv/bin:$PATH"' >> ~/.bashrc
    echo 'eval "$(rbenv init -)"' >> ~/.bashrc
    
    git clone git://github.com/sstephenson/ruby-build.git ~/.rbenv/plugins/ruby-build
    echo 'export PATH="$HOME/.rbenv/plugins/ruby-build/bin:$PATH"' >> ~/.bashrc
    source ~/.bashrc
    

    为了使路径正常工作,我需要手动设置它,因此对于该特定任务,我做了以下操作:
    - name: install rubies
      become_user: rails
      environment:
        PATH: "{{ ansible_env.PATH }}:/home/rails/.rbenv/shims:/home/rails/.rbenv/bin "
      shell: '{{ rbenv_shell }} -lc "rbenv install {{ item[0] }}"'
      with_together
        - "{{ rubies }}"
        - "{{ ruby_installed.results }}"
      ...
    

    这会将您的rbenv命令的路径附加到ansible_env.PATH查找,并使其按预期工作。

    关于ubuntu - Ansible剧本,可从用户 shell 执行命令,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/28550619/

    10-13 05:14