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如何修复 Elasticsearch Python elasticsearch.exceptions.NotFoundError: NotFoundError(404, index_not_found_exception)

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问题：

你想在 Python 中使用类似这样的代码更新 ElasticSearch 索引设置

es_put_settings.py
es.indices.put_settings(index="node", body={
    "index.mapping.total_fields.limit": 100000
})
notfound_trace.txt
Traceback (most recent call last):
  File "estest.py", line 11, in <module>
    es.indices.put_settings(index="node", body={
  File "/usr/local/lib/python3.8/dist-packages/elasticsearch/client/utils.py", line 168, in _wrapped
    return func(*args, params=params, headers=headers, **kwargs)
  File "/usr/local/lib/python3.8/dist-packages/elasticsearch/client/indices.py", line 786, in put_settings
    return self.transport.perform_request(
  File "/usr/local/lib/python3.8/dist-packages/elasticsearch/transport.py", line 415, in perform_request
    raise e
  File "/usr/local/lib/python3.8/dist-packages/elasticsearch/transport.py", line 381, in perform_request
    status, headers_response, data = connection.perform_request(
  File "/usr/local/lib/python3.8/dist-packages/elasticsearch/connection/http_urllib3.py", line 277, in perform_request
    self._raise_error(response.status, raw_data)
  File "/usr/local/lib/python3.8/dist-packages/elasticsearch/connection/base.py", line 330, in _raise_error
    raise HTTP_EXCEPTIONS.get(status_code, TransportError)(
elasticsearch.exceptions.NotFoundError: NotFoundError(404, 'index_not_found_exception', 'no such index [node]', node, index_or_alias)

解决方案

需要先创建索引才能设置。**首先，仔细检查索引名称拼写是否正确！**你可以在异常中看到索引名称：no such index [node] 表示索引名为 node

创建索引的直接方法是

es_indices_create_example.txt
es.indices.create("node")

但注意这在索引已存在时会失败。为了解决此问题，我推荐使用我们之前关于如何在 Python 中创建不存在的 ElasticSearch 索引的文章中的代码：

es_create_index_if_not_exists.py
def es_create_index_if_not_exists(es, index):
  """创建给定的 ElasticSearch 索引，如果已存在则忽略错误"""
  try:
    es.indices.create(index)
  except elasticsearch.exceptions.RequestError as ex:
    if ex.error == 'resource_already_exists_exception':
      pass # 索引已存在。忽略。
    else: # 其他异常 - 抛出它
      raise exnodes

并使用 es_create_index_if_not_exists() 函数创建你的索引：

create_node_index.py
es_create_index_if_not_exists(es, "node") # 创建 "node" 索引；如果已存在则不会失败
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