Thanks Comradin, I tried upgrading to 2.4 (then will move to 5.5 ).
And I am using Elasticsearch Migration Plugin for re-indexing.
Issue I am facing with existing indices:
curl -XGET 'localhost:9200/_cat/indices?v&pretty'
health status index pri rep docs.count docs.deleted store.size pri.store.size
yellow open .kibana 5 1 9 0 41.3kb 41.3kb
yellow open logstash-2017.07.20 5 1 2148 0 634.5kb 634.5kb
yellow open .reindex-status 1 1 0 0 159b 159b
It is show health for all indices as yellow and plugin will not work until it moves to green.
What it the reason for yellow status of indices.
Can you please help in this how can I re-index my existing indexes.