012.Elasticsearch索引管理入门篇

1.1 创建索引

[root@node01 ~]# curl -X PUT "node01:9200/index1"

# 返回
{
    "acknowledged": true,
    "shards_acknowledged": true,
    "index": "index1"
}

1.2 查看索引

[root@node01 ~]# curl -X GET "node01:9200/index1"

# 返回
{
    "index1": {
        "aliases": {},
        "mappings": {}, # 字段信息
        "settings": {
            "index": {
                "creation_date": "1586503723100",
                "number_of_shards": "5", # 默认shard数：5
                "number_of_replicas": "1", # 默认replica数：1
                "uuid": "mnGGs-8yTbuDrcbwUmdTZQ",
                "version": {
                    "created": "6060099"
                },
                "provided_name": "index1"
            }
        }
    }
}

1.3 删除索引

curl -X DELETE "node01:9200/index1"

# 返回
{
    "acknowledged": true
}

# 语法 
DELETE /index_name1
DELETE /index_name1,index_name2
DELETE /index_prefix*
DELETE /_all

补充：
不允许删除全部索引(DELETE /_all)的配置：

action.destructive_requires_name: true

1.4 批量查看索引

curl -X GET "node01:9200/index1,index2"

# 返回
{
    "index1": {
        "aliases": {},
        "mappings": {},
        "settings": {
            "index": {
                "creation_date": "1586504252493",
                "number_of_shards": "5",
                "number_of_replicas": "1",
                "uuid": "ICoU-6pfT36cHvEGSys7Ww",
                "version": {
                    "created": "6060099"
                },
                "provided_name": "index1"
            }
        }
    },
    "index2": {
        "aliases": {},
        "mappings": {},
        "settings": {
            "index": {
                "creation_date": "1586504255661",
                "number_of_shards": "5",
                "number_of_replicas": "1",
                "uuid": "r3bVxPGRQUC1aZslG2N3yw",
                "version": {
                    "created": "6060099"
                },
                "provided_name": "index2"
            }
        }
    }
}

1.5 查看全部索引

# 方法一
curl -X GET "node01:9200/_all"
# 返回
{
    "index1": {
        "aliases": {},
        "mappings": {},
        "settings": {
            "index": {
                "creation_date": "1586504252493",
                "number_of_shards": "5",
                "number_of_replicas": "1",
                "uuid": "ICoU-6pfT36cHvEGSys7Ww",
                "version": {
                    "created": "6060099"
                },
                "provided_name": "index1"
            }
        }
    },
    "index2": {
        "aliases": {},
        "mappings": {},
        "settings": {
            "index": {
                "creation_date": "1586504255661",
                "number_of_shards": "5",
                "number_of_replicas": "1",
                "uuid": "r3bVxPGRQUC1aZslG2N3yw",
                "version": {
                    "created": "6060099"
                },
                "provided_name": "index2"
            }
        }
    },
    "index3": {
        "aliases": {},
        "mappings": {},
        "settings": {
            "index": {
                "creation_date": "1586504463960",
                "number_of_shards": "5",
                "number_of_replicas": "1",
                "uuid": "CrtgrJ7QSdyz0Qow_i0pBg",
                "version": {
                    "created": "6060099"
                },
                "provided_name": "index3"
            }
        }
    },
    "test_index": {
        "aliases": {},
        "mappings": {
            "test_type": {
                "properties": {
                    "message": {
                        "type": "text",
                        "fields": {
                            "keyword": {
                                "type": "keyword",
                                "ignore_above": 256
                            }
                        }
                    },
                    "user": {
                        "type": "text",
                        "fields": {
                            "keyword": {
                                "type": "keyword",
                                "ignore_above": 256
                            }
                        }
                    }
                }
            }
        },
        "settings": {
            "index": {
                "creation_date": "1586503491778",
                "number_of_shards": "5",
                "number_of_replicas": "1",
                "uuid": "KyWsIMTDQUyNPmRsR0DEvw",
                "version": {
                    "created": "6060099"
                },
                "provided_name": "test_index"
            }
        }
    }
}

# 方法二
curl -X GET "node01:9200/_cat/indices?v"
# 返回
health status index      uuid                   pri rep docs.count docs.deleted store.size pri.store.size
yellow open   index2     r3bVxPGRQUC1aZslG2N3yw   5   1          0            0      1.2kb          1.2kb
yellow open   index1     ICoU-6pfT36cHvEGSys7Ww   5   1          0            0      1.2kb          1.2kb
yellow open   test_index KyWsIMTDQUyNPmRsR0DEvw   5   1          1            0        5kb            5kb
yellow open   index3     CrtgrJ7QSdyz0Qow_i0pBg   5   1          0            0      1.1kb          1.1kb

1.6 判断索引是否存在

[root@node01 ~]# curl -I "node01:9200/index1"
HTTP/1.1 200 OK
content-type: application/json; charset=UTF-8
content-length: 231

[root@node01 ~]# curl -I "node01:9200/index100"
HTTP/1.1 404 Not Found
content-type: application/json; charset=UTF-8
content-length: 355

1.7 关闭索引

[root@node01 ~]# curl -X POST "node01:9200/index1/_close"
{
    "acknowledged":true
}

1.8 开启索引

[root@node01 ~]# curl -X POST "node01:9200/index1/_open"
{
    "acknowledged":true,
    "shards_acknowledged":true
}