elastic search in crashloopback.

docker logs shows an error in the schef runbook with the sdc

2018-04-25T13:00:06+00:00] INFO: Storing updated cookbooks/sdc-elasticsearch/recipes/ES_1_setup_elasticsearch.rb in the cache.

• sdc-elasticsearch (0.0.0)
  Installing Cookbook Gems:
  Compiling Cookbooks...

================================================================================
Recipe Compile Error in /root/chef-solo/cache/cookbooks/sdc-elasticsearch/recipes/ES_1_setup_elasticsearch.rb
================================================================================

NoMethodError
-------------
undefined method `each' for "dev-sdc-es.onap":String

Cookbook Trace:
---------------
/root/chef-solo/cache/cookbooks/sdc-elasticsearch/recipes/ES_1_setup_elasticsearch.rb:3:in `from_file'

Relevant File Content:
----------------------
/root/chef-solo/cache/cookbooks/sdc-elasticsearch/recipes/ES_1_setup_elasticsearch.rb:

1: elasticsearch_list = ''
2:
3>> node['Nodes']['ES'].each do |item|
4: elasticsearch_list += "- " + item + ":9300\n"
5: end
6:
7:
8: template "/usr/share/elasticsearch/config/elasticsearch.yml" do
9: source "ES-elasticsearch.yml.erb"
10: owner "elasticsearch"
11: group "elasticsearch"
12: mode "0755"

System Info:
------------
chef_version=14.0.202
platform=alpine
platform_version=3.7.0
ruby=ruby 2.4.4p296 (2018-03-28 revision 63013) [x86_64-linux-musl]
program_name=/usr/bin/chef-solo
executable=/usr/bin/chef-solo

Running handlers:
[2018-04-25T13:00:06+00:00] ERROR: Running exception handlers
[2018-04-25T13:00:06+00:00] ERROR: Running exception handlers
Running handlers complete
[2018-04-25T13:00:06+00:00] ERROR: Exception handlers complete
[2018-04-25T13:00:06+00:00] ERROR: Exception handlers complete
Chef Client failed. 0 resources updated in 01 seconds
[2018-04-25T13:00:06+00:00] FATAL: Stacktrace dumped to /root/chef-solo/cache/chef-stacktrace.out
[2018-04-25T13:00:06+00:00] FATAL: Stacktrace dumped to /root/chef-solo/cache/chef-stacktrace.out
[2018-04-25T13:00:06+00:00] FATAL: Please provide the contents of the stacktrace.out file if you file a bug report
[2018-04-25T13:00:06+00:00] FATAL: Please provide the contents of the stacktrace.out file if you file a bug report
[2018-04-25T13:00:06+00:00] FATAL: NoMethodError: undefined method `each' for "dev-sdc-es.onap":String
[2018-04-25T13:00:06+00:00] FATAL: NoMethodError: undefined method `each' for "dev-sdc-es.onap":String