ES (8.1) certification topic

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This article is a Elasticsearch A list of topics required by certified engineers , Get the latest ES8.1 Certification of version , According to the information on the official website , from 2022 year 8 month 4 The day begins ,ES Certification from the original 7.13 Version changed to 8.1 edition , The latest exam questions are as follows , Provide it to small partners who need it . In the following words, the articles based on the following test questions will be updated in succession , It can also be regarded as a record of my study ES The process of , Try to pass this certification , Come on, everybody

The following is the examination version 7.13 Test questions of , stay 8.1 The test sites deleted and newly added in the version have been marked , You can taste it yourself according to your needs

Catalog

Data management module

1、 Define an index according to the given requirements

2、 Define the index template and use the index template according to the given requirements

3、 Dynamic template according to the definition of given requirements

4、 Define index lifecycle management policies for time series indexes （ILM）

5、 Define the index template for creating new data streams （data stream）

6、（ deleted ） Use the data visualization tool to upload the file to elasticsearch

Retrieval data module

7、 Write and execute statements that search for words or phrases in one or more fields of the index

8、 Write and execute a bool Comprehensive search statement of query

9、 Write an asynchronous retrieval

10、 Write and implement an index aggregation and bucket aggregation

11、 Write and execute an aggregation containing sub aggregations

12、 Write and execute a query statement that can search across multiple clusters

13、 Write and execute a run-time field search

Develop the retrieval application module

14、 Highlight the search term in the search response results

15、 Sort the query results according to the given requirements

16、 Realize paging query

17、 Define and use index aliases

18、 Define and use search templates

Data processing module

19、 Define a mapping

20、 Define a custom word breaker that meets the given requirements

21、 Use multi-fields Set up different types or word splitters for different fields

22、 Use reindex api and update by query To rebuild the index or update the document

23、 Define and use and process management to meet given requirements , Include use painless Modify the document

24、（ deleted ） Configuration index , Maintain the relationship between nested object arrays

25、（ newly added ） Define the run-time field to get the field information customized by the script

https://www.elastic.co/guide/en/elasticsearch/reference/8.1/runtime.html

Cluster management module

26、 Diagnose the fragmentation problem and repair the health of the cluster

27、 Backup and restore clusters or indexes

28、 Configure searchable snapshots

29、 Configure cross cluster retrieval

30、 Real time replication across clusters

31、（ deleted ） Use elasticsearch security Define role-based access control