如何动态馈送哈希数组对象到厨师ERB模板资源

Question

尝试使用模板资源使用数组作为厨师的来源来配置多个YUM存储库。一些存储库具有包括或排除参数。有些是针对镜子大多数瞄准单个碱基的目标。简而言之，回购定义在参数方面并非相同。这是我厨师属性文件中回购定义的示例。

default['ecmc_yum_repo']['server']['repos']['chef-stable'] = {
  'baseurl': 'https://rpm.ecmc.lan/repos/chef-stable',
  'name': 'Chef Repo',
  'enabled': '0',
  'gpgcheck': '1',
  'gpgkey': 'file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CHEF',
  'gpgkeysource': 'https://packages.chef.io/chef.asc',
  'gpgkeyversion': 'gpg-pubkey-83ef826a-4a690bb4',
  'includepkgs': 'chef-workstation',
}

default['yum_repo']['server']['repos']['epel'] = {
  'name': 'Extra Packages for Enterprise Linux 7 - $basearch',
  'enabled': '1',
  'gpgcheck': '1',
  'gpgkey': 'file:///etc/pki/rpm-gpg/RPM-GPG-KEY-EPEL-7',
  'gpgkeysource': 'https://dl.fedoraproject.org/pub/epel/RPM-GPG-KEY-EPEL-7',
  'gpgkeyversion': 'gpg-pubkey-352c64e5-52ae6884',
  'metalink': 'https://mirrors.fedoraproject.org/metalink?repo=epel-7&arch=x86_64',
}

default['yum_repo']['server']['repos']['teams'] = {
  'baseurl': 'https://packages.microsoft.com/yumrepos/ms-teams',
  'name': 'Microsoft Teams Repo',
  'enabled': '0',
  'exclude': 'teams-insiders*',
  'gpgcheck': '1',
  'gpgkey': 'file:///etc/pki/rpm-gpg/RPM-GPG-KEY-MICROSOFT',
  'gpgkeysource': 'https://packages.microsoft.com/keys/microsoft.asc',
  'gpgkeyversion': 'gpg-pubkey-be1229cf-5631588c',
}

在我的厨师食谱中，当我循环浏览阵列时，我想将阵列中的所有项目馈送到我的模板资源中，这些物品将创建YUM回购文件，除了GPGKeySource和GPGKeyversion。请记住，这缩短了我在食谱中所做的事情。除了使用这些数组项目的模板外，我还会调用其他资源。但是对于回购文件模板资源，我除了这两个项目外都需要所有。到目前为止，我一直无法以动态的方式实现这一目标（就像在模板中一样，除了这两个值以外的所有内容）。如果所有存储库都具有完全相同的参数，那将不是问题，但事实并非如此。

要开始故障排除，我只是尝试将所有参数传递到阵列中的所有参数如下：

node['yum_repo']['server']['repos'].each do |reponame, config|

  # Create repositories
  template "/etc/yum.repos.d/#{reponame}.repo" do
    source 'repofile.repo.erb'
    owner 'root'
    group 'root'
    mode '0644'
    variables(repoid: "#{reponame}",
              repo_config: "#{config}")
    action :create
  end
end

我的模板文件中，我尝试以下操作：

# This file was generated by Chef
# Do NOT modify this file by hand.
[<%= @repoid %>]
<%  @repo_config.each do |key, value| -%>
<%= key %>=<%= value %>
<% end -%>

将失败。

Error executing action `create` on resource 'template[/etc/yum.repos.d/chef-stable.repo]'

Chef::Mixin::Template::TemplateError
------------------------------------
undefined method `each' for "{\"baseurl\"=>\"https://rpm.mydomain.lan/repos/chef-stable\", \"name\"=>\"Chef Repo\", \"enabled\"=>\"0\", \"gpgcheck\"=>\"1\", \"gpgkey\"=>\"file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CHEF\", \"gpgkeysource\"=>\"https://packages.chef.io/chef.asc\", \"gpgkeyversion\"=>\"gpg-pubkey-83ef826a-4a690bb4\", \"includepkgs\"=>\"chef-workstation\"}":String

这

           Compiled Resource:
           ------------------
           # Declared in /tmp/kitchen/cache/cookbooks/yum_repo/recipes/repo-non-amazon.rb:43:in `block in from_file'
           
           template("/etc/yum.repos.d/chef-stable.repo") do
             action [:create]
             default_guard_interpreter :default
             source "repofile.repo.erb"
             declared_type :template
             cookbook_name "yum_repo"
             recipe_name "repo-non-amazon"
             owner "root"
             group "root"
             mode "0644"
             variables {:repoid=>"chef-stable", :repo_config=>"{\"baseurl\"=>\"https://rpm.mydomain.lan/repos/chef-stable\", \"name\"=>\"Chef Repo\", \"enabled\"=>\"0\", \"gpgcheck\"=>\"1\", \"gpgkey\"=>\"file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CHEF\", \"gpgkeysource\"=>\"https://packages.chef.io/chef.asc\", \"gpgkeyversion\"=>\"gpg-pubkey-83ef826a-4a690bb4\", \"includepkgs\"=>\"chef-workstation\"}"}
             path "/etc/yum.repos.d/chef-stable.repo"
           end
           
           Template Context:
           -----------------
           on line #4
             2: # Do NOT modify this file by hand.
             3: [<%= @repoid %>]
             4: <%  @repo_config.each do |key, value| -%>
             5: <%= key %>=<%= value %>
             6: <% end -%>
           
           System Info:
           ------------
           chef_version=17.1.35
           platform=amazon
           platform_version=2
           ruby=ruby 3.0.1p64 (2021-04-05 revision 0fb782ee38) [x86_64-linux]
           program_name=/opt/chef/bin/chef-client
           executable=/opt/chef/bin/chef-client
           
       
       Running handlers:
       [2022-05-24T14:57:42-05:00] ERROR: Running exception handlers
       Running handlers complete
       [2022-05-24T14:57:42-05:00] ERROR: Exception handlers complete
       Chef Infra Client failed. 0 resources updated in 06 seconds
       [2022-05-24T14:57:42-05:00] FATAL: Stacktrace dumped to /tmp/kitchen/cache/chef-stacktrace.out
       [2022-05-24T14:57:42-05:00] FATAL: Please provide the contents of the stacktrace.out file if you file a bug report
       [2022-05-24T14:57:42-05:00] FATAL: Chef::Mixin::Template::TemplateError: undefined method `each' for "{\"baseurl\"=>\"https://rpm.mydomain.lan/repos/chef-stable\", \"name\"=>\"Chef Repo\", \"enabled\"=>\"0\", \"gpgcheck\"=>\"1\", \"gpgkey\"=>\"file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CHEF\", \"gpgkeysource\"=>\"https://packages.chef.io/chef.asc\", \"gpgkeyversion\"=>\"gpg-pubkey-83ef826a-4a690bb4\", \"includepkgs\"=>\"chef-workstation\"}":String

在 通过馈送到模板的repo_config变量进行迭代。显然被视为字符串对象？

这甚至可以完成吗？我的搜索都没有产生解决方案，而我有限的大脑现在已经油炸了。

Answer 1

这似乎是由于模板变量分配期间使用“＃{...}”。当我尝试使用您的代码时，我会发现错误：

undefined method `each' for #<String:0x0000000004ed6238>

也从您的错误中，我们可以看到repo_config是字符串。 在消息中。

"{\"baseurl\"=>\"https://rpm.mydomain.lan/repos/chef-stable\", ...

注意“ {

{"baseurl"=>"https://rpm.ecmc.lan/repos/chef-stable", ...

请 以下似乎已将哈希人施加到一个字符串中，这就是为什么。方法不起作用

    variables(repoid: "#{reponame}",
              repo_config: "#{config}")

，以下资源声明应效果很好：

node['yum_repo']['server']['repos'].each do |reponame, config|

  # Create repositories
  template "/etc/yum.repos.d/#{reponame}.repo" do
    source 'repofile.repo.erb'
    owner 'root'
    group 'root'
    mode '0644'
    variables(repoid: reponame,
              repo_config: config)
    action :create
  end
end

---

您甚至可以考虑使用<<<< href =“ https://docs.chef.io/resources/yum_repository/” rel =“ nofollow noreferrer”> yum_repository Resource 它可以管理您的Yum reposoritories。所有属性：

node['yum_repo']['server']['repos'].each do |reponame, repoconfig|
  yum_repository reponame do
    baseurl repoconfig['baseurl']
    description repoconfig['name']
    enabled repoconfig['enabled']
    metalink repoconfig['metalink']
    action :create
  end
end

唯一考虑的是，需要针对以下布尔来调整属性：

  'name': 'Extra Packages for Enterprise Linux 7 - $basearch',
  'enabled': true,
  'gpgcheck': true,