修改ES索引分片副本数

索引一旦创建无法修改分片数，但是可以使用reindex重建索引。
可以修改单个索引副本数量

PUT /testindex/_settings
{
   "number_of_replicas" : 2
}

新建模板修改默认分片数
查看所有模板

GET _template

创建新索引模板，设置三个分片0个副本

PUT _template/logstash
{
        "template": "*",  匹配所有索引
        "order": 0,   优先级
        "settings": {   
            "index": {
                "number_of_replicas": "0",
                "number_of_shards": "3",
                "refresh_interval": "5s"
            }
        },
        "mappings": {
            "_default_": {
                "dynamic_templates": [
                    {
                        "message_field": {
                            "path_match": "message",
                            "mapping": {
                                "norms": false,
                                "type": "text"
                            },
                            "match_mapping_type": "string"
                        }
                    },
                    {
                        "string_fields": {
                            "mapping": {
                                "norms": false,
                                "type": "text",
                                "fields": {
                                    "keyword": {
                                        "type": "keyword"
                                    }
                                }
                            },
                            "match_mapping_type": "string",
                            "match": "*"
                        }
                    }
                ],
                "_all": {
                    "norms": false,
                    "enabled": true
                },
                "properties": {
                    "@timestamp": {
                        "include_in_all": false,
                        "type": "date"
                    },
                    "geoip": {
                        "dynamic": true,
                        "properties": {
                            "ip": {
                                "type": "ip"
                            },
                            "latitude": {
                                "type": "half_float"
                            },
                            "location": {
                                "type": "geo_point"
                            },
                            "longitude": {
                                "type": "half_float"
                            }
                        }
                    },
                    "@version": {
                        "include_in_all": false,
                        "type": "keyword"
                    }
                }
            }
        },
        "aliases": {}
    }

查看新创建模板信息

GET /_template/logstash