安装 gem 时 Chef 崩溃

Question

我使用 chef 和 vagrant 作为供应商。

当我尝试按如下方式安装 gems 时，应用程序崩溃：

元数据.rb

gem 'faraday'
gem 'json'

default.rb

require 'faraday'
require 'json'

conn = Faraday.new(:url => 'http://127.0.0.1:8200')

引发此错误：

==> default: Running handlers:
==> default: [2017-10-25T09:42:43+00:00] ERROR: Running exception handlers
==> default: Running handlers complete
==> default: [2017-10-25T09:42:43+00:00] ERROR: Exception handlers complete
==> default: Chef Client failed. 0 resources updated in 19 seconds
==> default: [2017-10-25T09:42:43+00:00] INFO: Sending resource update report (run-id: 7f4593f5-1c86-409c-95fe-988f09501740)
==> default: [2017-10-25T09:42:43+00:00] FATAL: Stacktrace dumped to /var/chef/cache/chef-stacktrace.out
==> default: [2017-10-25T09:42:43+00:00] FATAL: Please provide the contents of the stacktrace.out file if you file a bug report
==> default: [2017-10-25T09:42:43+00:00] ERROR: Expected process to exit with [0], but received '5'
==> default: ---- Begin output of bundle install ----
==> default: STDOUT: Don't run Bundler as root. Bundler can ask for sudo if it is needed, and
==> default: installing your bundle as root will break this application for all non-root
==> default: users on this machine.
==> default: Fetching gem metadata from https://rubygems.org/
==> default: Fetching version metadata from https://rubygems.org/
==> default: Resolving dependencies...
==> default: Installing multipart-post 2.0.0
==> default: Installing json 2.1.0 with native extensions
==> default:
==> default: Gem::Ext::BuildError: ERROR: Failed to build gem native extension.
==> default:
==> default:     current directory: /opt/chef/embedded/lib/ruby/gems/2.3.0/gems/json-2.1.0/ext/json/ext/generator
==> default: /opt/chef/embedded/bin/ruby -r ./siteconf20171025-3434-1qh8whd.rb extconf.rb
==> default: creating Makefile
==> default:
==> default: current directory: /opt/chef/embedded/lib/ruby/gems/2.3.0/gems/json-2.1.0/ext/json/ext/generator
==> default: make "DESTDIR=" clean
==> default:
==> default: current directory: /opt/chef/embedded/lib/ruby/gems/2.3.0/gems/json-2.1.0/ext/json/ext/generator
==> default: make "DESTDIR="
==> default: compiling generator.c
==> default: make: gcc: Command not found
==> default: make: *** [generator.o] Error 127
==> default:
==> default: make failed, exit code 2
==> default:
==> default: Gem files will remain installed in /opt/chef/embedded/lib/ruby/gems/2.3.0/gems/json-2.1.0 for inspection.
==> default: Results logged to /opt/chef/embedded/lib/ruby/gems/2.3.0/extensions/x86_64-linux/2.3.0/json-2.1.0/gem_make.out
==> default: Using bundler 1.12.5
==> default: Installing faraday 0.13.1
==> default: An error occurred while installing json (2.1.0), and Bundler cannot continue.
==> default: Make sure that `gem install json -v '2.1.0'` succeeds before bundling.
==> default: STDERR:
==> default: ---- End output of bundle install ----
==> default: Ran bundle install returned 5
==> default: [2017-10-25T09:42:43+00:00] FATAL: Chef::Exceptions::ChildConvergeError: Chef run process exited unsuccessfully (exit code 1)
Chef never successfully completed! Any errors should be visible in the
output above. Please fix your recipes so that they properly complete.

gcc 似乎丢失了，但我无法安装它，因为它首先尝试安装 gems，然后执行配方，所以在我做任何事情之前它就崩溃了。

-- 编辑--

我已经添加了这些行并且正在工作：

metadata.rb: (从这里移除 gem 依赖)

depends 'hashicorp-vault', '~> 2.5.0'
depends 'build-essential', '~> 8.0.3'

default.rb:

include_recipe 'hashicorp-vault::default'
chef_gem 'faraday'
chef_gem 'json'
require 'faraday'
require 'json'

Answer 1

安装gcc 的Chef-y 方法是使用build-essential 食谱。

Answer 2

在主厨配置之前添加一个外壳配置器？

例如在你的 Vagrantfile 中：

Vagrant.configure("2") do |config|
    config.vm.provision :shell, inline: 'yum install -y gcc'
    config.vm.provision :chef, inline: '...'
end

Answer 3

Recipes 完全能够运行任意命令，因此，如果您知道如何手动执行此操作，您可以在紧要关头使用 Chef 执行此操作。话虽如此，您应该保护任何任意命令，这样它们就不会在每次运行配方时都运行，只有在需要时才运行。

execute 'sudo yum groupinstall \'Development Tools\'' unless <your logic for 
detecting gcc goes here>

Chef 还拥有 Ohai，它甚至可以在运行开始之前收集有关运行的元数据，包括您正在运行的操作系统，因此您可以利用它使您的食谱跨平台。

https://docs.chef.io/dsl_recipe.html

include_recipe 'mycookbook::debian' if node['platform_family'] == 'debian'
include_recipe 'mycookbook::rhel' if node['platform_family'] == 'rhel'

或者，如果您计划拥有多种平台类型，则为您提供更大的灵活性

possible_platforms = ['debian', 'rhel']
if possible_platforms.contains? node['platform_family']
   include_recipe "mycookbook::node['platform_family']"
else
    puts 'This platform isn't valid'
end