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常见ElasticSearch API

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查看符合某个模式的索引, 输出标头, 并按照索引大小倒序排列. 参考 cat indices API

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GET _cat/indices/some-*20210806*?v&s=ss:desc

查看某个索引的设置

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GET /some-index-20210806/_settings

查看符合某个模式的模板设置

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GET _template/some-index-*

查看某个索引下分片的分布情况, 输出表头.

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GET _cat/shards/some-index-20210806?v

查看集群设置

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GET /_cluster/settings

查看集群中正在进行的任务. 例如reindex

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GET /_tasks?detailed=true&actions=*reindex

终止集群中某个正在进行的任务，根据上一条中查到的任务ID. 参考：Task Management API

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POST _tasks/nodeID:taskID/_cancel

删除某个索引

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DELETE /some-index-20210806

调整某个模板设置（举例）

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PUT /_template/some-template-1
{
    "order": 9,
    "index_patterns": [
        "some-index-*"
    ],
    "settings": {
        "index": {
            "number_of_shards": "30",
            "routing": {
                "allocation": {
                    "include": {
                        "temperature": "hot"
                    },
                    "require": {
                        "temperature": "hot"
                    }
                }
            }
        }
    },
    "mappings": {
        "doc": {
            "dynamic_templates": [
                {
                    "message_field": {
                        "path_match": "message",
                        "mapping": {
                            "norms": false,
                            "type": "text"
                        },
                        "match_mapping_type": "string"
                    }
                },
                {
                    "string_fields": {
                        "mapping": {
                            "fields": {
                                "keyword": {
                                    "ignore_above": 256,
                                    "type": "keyword"
                                }
                            },
                            "type": "text"
                        },
                        "match_mapping_type": "string",
                        "match": "*"
                    }
                }
            ],
            "date_detection": false,
            "properties": {
                "@timestamp": {
                    "type": "date"
                },
                "@version": {
                    "type": "keyword"
                }
            }
        }
    },
    "aliases": {}
}