如何使用 puppet 安装 yum 软件包组?

如何使用 puppet 安装 yum 软件包组?

除了 exec 之外,puppet 还有其他方法可以安装 yum 软件包组(例如“开发工具”)吗?

答案1

我今天也遇到了类似的请求,但如果可以通过其他方式解决问题,我不喜欢使用 exec。所以我选择了一条不同的路径,并为“yumgroup”编写了一个简单的自定义类型。只需将这些文件放入模块路径中的任何模块中即可:

“模块名称/lib/puppet/provider/yumgroup/default.rb”

Puppet::Type.type(:yumgroup).provide(:default) do
  desc 'Support for managing the yum groups'

  commands :yum => '/usr/bin/yum'

  # TODO
  # find out how yum parses groups and reimplement that in ruby

  def self.instances
    groups = []

    # get list of all groups
    yum_content = yum('grouplist').split("\n")

    # turn of collecting to avoid lines like 'Loaded plugins'
    collect_groups = false

    # loop through lines of yum output
    yum_content.each do |line|
      # if we get to 'Available Groups:' string, break the loop
      break if line.chomp =~ /Available Groups:/

      # collect groups
      if collect_groups and line.chomp !~ /(Installed|Available)/
        current_name = line.chomp.sub(/^\s+/,'\1').sub(/ \[.*\]/,'')
        groups << new(
          :name   => current_name,
          :ensure => :present
        )
      end

      # turn on collecting when the 'Installed Groups:' is reached
      collect_groups = true if line.chomp =~ /Installed Groups:/
    end
    groups
  end

  def self.prefetch(resources)
    instances.each do |prov|
      if resource = resources[prov.name]
        resource.provider = prov
      end
    end
  end

  def create
    yum('-y', 'groupinstall', @resource[:name])
    @property_hash[:ensure] == :present
  end

  def destroy
    yum('-y', 'groupremove', @resource[:name])
    @property_hash[:ensure] == :absent
  end

  def exists?
    @property_hash[:ensure] == :absent
  end

end

“模块名称/lib/puppet/类型/yumgroup.rb”

Puppet::Type.newtype(:yumgroup) do
@doc = "Manage Yum groups

A typical rule will look like this:

yumgroup { 'Development tools':
  ensure => present,
}
"
    ensurable

    newparam(:name) do
       isnamevar
       desc 'The name of the group'
    end

end

然后,运行启用 pluginsync 的 puppet agent,您就可以使用如下自定义类型:

yumgroup {'Base': ensure => present, }

或者:

yumgroup {'Development tools': ensure => absent, }

您可以通过运行以下命令查看安装了哪些组:

puppet resource yumgroup

享受!

答案2

这里是 'yumgroup' puppet 资源类型的定义。它默认安装默认和强制包,并可以安装可选包。

虽然这个定义很容易实现,但目前还不能删除 yum 组。我自己没有这么做,因为在某些情况下,它会导致 puppet 出现循环。

这种类型需要安装 yum-downloadonly rpm,我认为它只适用于 RHEL/CentOS/SL 6。在我写这篇文章的时候,以前版本的 yum 的退出状态是错误的,因此如果不扩展到 grep 进行输出,“unless”参数将无法工作。

define yumgroup($ensure = "present", $optional = false) {
   case $ensure {
      present,installed: {
         $pkg_types_arg = $optional ? {
            true => "--setopt=group_package_types=optional,default,mandatory",
            default => ""
         }
         exec { "Installing $name yum group":
            command => "yum -y groupinstall $pkg_types_arg $name",
            unless => "yum -y groupinstall $pkg_types_arg $name --downloadonly",
            timeout => 600,
         }
      }
   }
}

我故意省略了将 yum-downloadonly 设为依赖项,因为它可能与其他人的清单冲突。如果您想这样做,请在单独的清单中声明 yum-downloadonly 包并将其包含在此定义中。不要直接在此定义中声明,否则如果您多次使用此资源类型,puppet 将给出错误。然后,exec 资源应该需要 Package['yum-downloadonly']。

答案3

我在傀儡类型参考对于包类型,因此我在 Freenode 上的 Puppet IRC 频道(奇怪的是#puppet)上询问,但没有得到任何答案,所以我认为答案是“还没有”。

答案4

我喜欢使用自定义资源的解决方案,但它不是幂等的。我对exists?函数的看法:

Puppet::Type.type(:yumgroup).provide(:default) do
  desc 'Support for managing the yum groups'

  commands :yum => '/usr/bin/yum'

  # TODO
  # find out how yum parses groups and reimplement that in ruby

  def self.instances
    groups = []

    # get list of all groups
    yum_content = yum('grouplist')

    # turn of collecting to avoid lines like 'Loaded plugins'
    collect_groups = false

    # loop through lines of yum output
    yum_content.each do |line|
      # if we get to 'Available Groups:' string, break the loop
      break if line.chomp =~ /Available Groups:/

      # collect groups
      if collect_groups and line.chomp !~ /(Installed|Available)/
        current_name = line.chomp.sub(/^\s+/,'\1').sub(/ \[.*\]/,'')
        groups << new(
          :name   => current_name,
          :ensure => :present
        )
      end

      # turn on collecting when the 'Installed Groups:' is reached
      collect_groups = true if line.chomp =~ /Installed Groups:/
    end
    groups
  end

  def self.prefetch(resources)
    instances.each do |prov|
      if resource = resources[prov.name]
        resource.provider = prov
      end
    end
  end

  def create
    yum('-y', 'groupinstall', @resource[:name])
    @property_hash[:ensure] == :present
  end

  def destroy
    yum('-y', 'groupremove', @resource[:name])
    @property_hash[:ensure] == :absent
  end


  def exists?
    cmd = "/usr/bin/yum grouplist hidden \"" + @resource[:name] + "\" | /bin/grep \"^Installed\" > /dev/null"
    system(cmd)
    $?.success?
  end

end

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