puppet hash iterate + template

# hiera
uptream:
  'abc_core':
    'ips':
      - '1.2.3.4'
      - '1.2.3.5'
    'port': 8080
  'abc_cp_core':
    'ips':
      - '1.2.3.4'
      - '1.2.3.5'
    'port': 8081
  'def_core':
    'ips':
      - '1.2.3.6'
      - '1.2.3.7'
    'port': 8080
  'def_cp_core':
    'ips':
      - '1.2.3.6'
      - '1.2.3.7'
    port: 8081

# Puppet class
class config (
  $upstream
){
  $upstream.each |$key, $value| {
    concat::fragment { $key:
      target => '/etc/config',
      content => template('config/upstream.erb'),
  }
}

# Puppet template
upstream portal<%= @key %> {
  <%- @value['ips'].each do |ip| -%>
  server <%= ip %>:<%= @value['port'] %> weight=1  max_fails=2  fail_timeout=5s;
  <%- end -%>
}

# declaration

class { 'config':
  upstream => {
   'abc_core' => {
      'ips' => [ '1.2.3.4', '1.2.3.5'],
      'port' => 8080
    },
    'abc_cp_core' => {
      'ips' => [ '1.2.3.4', '1.2.3.5'],
      'port' => 8081
    },
    'def_core' => {
      'ips' => [ '1.2.3.6', '1.2.3.7'],
      'port' => 8080
    },
    'def_cp_core' => {
      'ips' => [ '1.2.3.6', '1.2.3.7'],
      port => 8081
    }
 }
}