binding.pry added

zabbix_sync.rb

# ...

  def read_config_file
    if File.exists?(config_file_name)
      binding.pry
      config_file = YAML.load(File.read config_file_name)
    end
    if @config_file['blacklist'].class == Array
      blacklist = @config_file['blacklist']
    end
  end
  
# ...