遍历 puppet 中的哈希数组

Question

我在 puppet 中有 hiera 数据如下：

elasticsearch::cluster_name: 'elasticsearch-dev'
elasticsearch::masterlist: [ "elasticsearchdev01.domain.com", "elasticsearchdev02.domain.com", "elasticsearchdev03.domain.com" ]
elasticsearch::kibanalist: [ "kibanadev01.domain.com" ]

我的清单包含以下内容：

  $masterlist = hiera('elasticsearch::masterlist')
  $kibanalist = hiera('elasticsearch::kibanalist')

  if ( $::fqdn in $masterlist ) or ( $::fqdn in $kibanalist ) {
    $cluster_name = hiera('elasticsearch::cluster_name')
  }

  else {
    notify { 'No cluster for node':
      message => "${::fqdn} is not configured to be in any cluster in the hiera data",
    }
  }

我想修改它以允许为单个环境配置多个集群，但我不确定实现它的最佳方法。我希望能够将主列表与其对应的集群名称分组，然后为每个节点调用相关的集群名称。

我想也许我需要使用哈希数组并对其进行迭代，但我不知道如何在清单中涵盖这一点。

Answer 1

您可能希望将数据重组为哈希的哈希：

elasticsearch::clusters:
  'elasticsearch-dev':
    masterlist: [ "elasticsearchdev01.domain.com", "elasticsearchdev02.domain.com", "elasticsearchdev03.domain.com" ]
    kibanalist: [ "kibanadev01.domain.com" ]

然后在您的清单中添加：

$clusters = hiera('elasticsearch::clusters')

$mycluster = $clusters.filter |$cluster, $data| {
  ($::fqdn in $data['masterlist']) or ($::fqdn in $data['kibanalist'])
}

if ($mycluster.empty) {
  notify { 'No cluster for node':
    message => "${::fqdn} is not configured to be in any cluster in the hiera data",
  }
}

$cluster_name = $mycluster.keys[0]
notice($cluster_name)

您可能还想考虑用lookup() 替换已弃用的hiera() 调用，并使用$facts['networking']['fqdn'] 代替旧的$::fqdn。