elasticsearch5.X版本集群主分片未分配如何处置？

curl -XPUT "master:9200/zebra_info?pretty" -H 'Content-Type: application/json' -d'

{

    "settings": {

        "number_of_shards":5,

        "number_of_replicas":1

    },

    "mappings": {

         "zebra_info": {

              "properties": {

                    "name" : {"type": "text", "analyzer": "ik_max_word", "search_analyzer": "ik_max_word", "fielddata": true, "fields": {"raw": {"type":"keyword"}}},

                    "firstly_classification": {"type": "keyword"},

                    "secondary_classification": {"type": "keyword"}

                }

            }

        }

    }

}