ElasticSearch: Unassigned Shards, how to fix?

Question

I have an ES cluster with 4 nodes:

number_of_replicas: 1
search01 - master: false, data: false
search02 - master: true, data: true
search03 - master: false,          


        

Answer 1

I was having this issue as well, and I found an easy way to resolve it.

• Get the index of unassigned shards

  $ curl -XGET http://172.16.4.140:9200/_cat/shards
  

• Install curator Tools, and use it to delete index

  $ curator --host 172.16.4.140 delete indices --older-than 1 \
         --timestring '%Y.%m.%d' --time-unit days --prefix logstash
  

  NOTE: In my case, the index is logstash of the day 2016-04-21

• Then check the shards again, all the unassigned shards go away!