这里总结一下考点的概览和摘要，正确在最后一周把英文文档再过一遍，查漏补缺。
重点看一下之前看过的doc是不是有一些参数被忽略了。

1. 官方的learn objectives

Topics

1. Installation and Configuration

1. Deploy and start an Elasticsearch cluster that satisfies a given set of requirements
   部署和启动Elastic集群以满足给定要求。
2. Configure the nodes of a cluster to satisfy a given set of requirements
   配置集群的节点以满足给定要求。
3. Secure a cluster using Elasticsearch Security
   使用Elasticsearch安全性保障集群安全。
4. Define role-based access control using Elasticsearch Security
   使用Elasticsearch安全性定义基于角色的访问控制。

1. Indexing Data

1. Define an index that satisfies a given set of requirements
   定义满足给定要求的索引。
2. Perform index, create, read, update, and delete operations on the documents of an index
   在给定索引上执行：索引、创建、读、更新、删除文档操作。
3. Define and use index aliases
   定义和使用索引别名。
4. Define and use an index template for a given pattern that satisfies a given set of requirements
   按照指定规则定义和适用索引模板，以满足给定需求。
5. Define and use a dynamic template that satisfies a given set of requirements
   定义和适用满足给定需求的动态模板。
6. Use the Reindex API and Update By Query API to reindex and/or update documents
   使用Reindex API 和 Update_by_query API reindex及更新文档。
7. Define and use an ingest pipeline that satisfies a given set of requirements, including the use of Painless to modify documents
   定义和使用管道（ingest pipeline)）以满足给定需求，包括：使用脚本修改文档(painless)。

1. Queries

1. Write and execute a search query for terms and/or phrases in one or more fields of an index
   在给定索引的一个或多个fields上撰写和执行terms或者phrases检索语句。
2. Write and execute a search query that is a Boolean combination of multiple queries and filters
   撰写和执行包含复杂检索(query)和过滤(filter)的bool检索语句。
3. Highlight the search terms in the response of a query
   在检索返回结果中高亮字段，也就是：执行特定字段的高亮检索。
4. Sort the results of a query by a given set of requirements
   为给定检索执行排序以满足一系列需求。
5. Implement pagination of the results of a search query
   为检索结果实施分页。
6. Use the scroll API to retrieve large numbers of results
   使用scroll API 获取超大数据量的返回结果。
7. Apply fuzzy matching to a query
   使用fuzzy匹配检索。
8. Define and use a search template
   定义和适用search template。
9. Write and execute a query that searches across multiple clusters
   撰写和执行跨集群检索query。

1. Aggregations

1. Write and execute metric and bucket aggregations
   撰写和执行Metric和bucket聚合。
2. Write and execute aggregations that contain sub-aggregations
   撰写和执行包含子聚合的聚合。
3. Write and execute pipeline aggregations
   撰写和执行pipeline（管道）聚合。

1. Mappings and Text Analysis

1. Define a mapping that satisfies a given set of requirements
   定义满足给定需求的映射（Mapping）。
2. Define and use a custom analyzer that satisfies a given set of requirements
   定义和使用自定义分词器，以满足给定需求。
3. Define and use multi-fields with different data types and/or analyzers
   定义和使用多fields以及不同field指定不同的分词器。
4. Configure an index so that it properly maintains the relationships of nested arrays of objects
   配置一个索引，使得它能恰当的管理nested嵌套对象类型。
5. Configure an index that implements a parent/child relationship
   配置父子关联关系索引。

1. Cluster Administration

1. Allocate the shards of an index to specific nodes based on a given set of requirements
   基于给定需求，在指定节点的索引上分配分片。
2. Configure shard allocation awareness and forced awareness for an index
   为索引配置分片感知和强制感知。
3. Diagnose shard issues and repair a cluster’s health
   诊断分片问题、修复集群健康问题。
4. Backup and restore a cluster and/or specific indices
   为集群或指定分片备份和恢复。
5. Configure a cluster for use with a hot/warm architecture
   为集群配置冷热架构。
6. Configure a cluster for cross cluster search
   为集群配置跨集群检索。

2. 脑图版

该脑图来自铭毅天下公众号


该图片来自毅铭天下的分享。

3. 对应文档链接分享

1、Installation and Configuration

1.1 Deploy and start an Elasticsearch cluster that satisfies a given set of requirements
https://www.elastic.co/guide/en/elasticsearch/reference/7.2/setup.html

1.2 Configure the nodes of a cluster to satisfy a given set of requirements
https://www.elastic.co/guide/en/elasticsearch/reference/7.2/important-settings.html
https://www.elastic.co/guide/en/elasticsearch/reference/7.2/modules-node.html

1.3 Secure a cluster using Elasticsearch Security
https://www.elastic.co/guide/en/elasticsearch/reference/7.2/security-settings.html
https://www.elastic.co/guide/en/elasticsearch/reference/7.2/configuring-security.html
https://www.elastic.co/guide/en/elasticsearch/reference/7.2/setup-passwords.html

1.4Define role-based access control using Elasticsearch Security
https://www.elastic.co/guide/en/elasticsearch/reference/7.2/security-api-put-role.html
https://www.elastic.co/guide/en/elasticsearch/reference/7.2/security-api-put-user.html

2、Indexing Data

2.1 Define an index that satisfies a given set of requirements
https://www.elastic.co/guide/en/elasticsearch/reference/7.2/indices-create-index.html

2.2 Perform index, create, read, update, and delete operations on the documents of an index
https://www.elastic.co/guide/en/elasticsearch/reference/7.2/docs.html

2.3 Define and use index aliases
https://www.elastic.co/guide/en/elasticsearch/reference/7.2/indices-aliases.html

2.4 Define and use an index template for a given pattern that satisfies a given set of requirements
https://www.elastic.co/guide/en/elasticsearch/reference/7.2/indices-templates.html

2.5 Define and use a dynamic template that satisfies a given set of requirements
https://www.elastic.co/guide/en/elasticsearch/reference/7.2/dynamic-templates.html

2.6 Use the Reindex API and Update By Query API to reindex and/or update documents
https://www.elastic.co/guide/en/elasticsearch/reference/7.2/docs-reindex.html
https://www.elastic.co/guide/en/elasticsearch/reference/7.2/docs-update-by-query.html

2.7 Define and use an ingest pipeline that satisfies a given set of requirements, including the use of Painless to modify documents
https://www.elastic.co/guide/en/elasticsearch/reference/7.2/ingest.html
https://www.elastic.co/guide/en/elasticsearch/reference/7.2/modules-scripting.html
https://www.elastic.co/guide/en/elasticsearch/painless/7.2/painless-lang-spec.html

3、Queries

3.1 Write and execute a search query for terms and/or phrases in one or more fields of an index
https://www.elastic.co/guide/en/elasticsearch/reference/7.2/query-dsl.html

3.2 Write and execute a search query that is a Boolean combination of multiple queries and filters
https://www.elastic.co/guide/en/elasticsearch/reference/7.2/query-dsl-bool-query.html

3.3 Highlight the search terms in the response of a query
https://www.elastic.co/guide/en/elasticsearch/reference/7.2/search-request-highlighting.html

3.4 Sort the results of a query by a given set of requirements
https://www.elastic.co/guide/en/elasticsearch/reference/7.2/search-request-sort.html

3.5Implement pagination of the results of a search query
https://www.elastic.co/guide/en/elasticsearch/reference/7.2/search-request-from-size.html

3.6 Use the scroll API to retrieve large numbers of results
https://www.elastic.co/guide/en/elasticsearch/reference/7.2/search-request-scroll.html

3.7 Apply fuzzy matching to a query
https://www.elastic.co/guide/en/elasticsearch/reference/7.2/query-dsl-fuzzy-query.html

3.8 Define and use a search template
https://www.elastic.co/guide/en/elasticsearch/reference/7.2/search-template.html

3.9 Write and execute a query that searches across multiple clusters
https://www.elastic.co/guide/en/elasticsearch/reference/7.2/modules-cross-cluster-search.html

4、Aggregations

4.1 Write and execute metric and bucket aggregations
https://www.elastic.co/guide/en/elasticsearch/reference/7.2/search-aggregations-metrics.html
https://www.elastic.co/guide/en/elasticsearch/reference/7.2/search-aggregations-bucket.html

4.2 Write and execute aggregations that contain sub-aggregations
https://www.elastic.co/guide/en/elasticsearch/reference/7.2/search-aggregations-pipeline.html

5、 Mappings and Text Analysis

5.1 Define a mapping that satisfies a given set of requirements
https://www.elastic.co/guide/en/elasticsearch/reference/7.2/mapping.html

5.2 Define and use a custom analyzer that satisfies a given set of requirements
https://www.elastic.co/guide/en/elasticsearch/reference/7.2/analysis.html
https://www.elastic.co/guide/en/elasticsearch/reference/7.2/analysis-custom-analyzer.html

5.3 Define and use multi-fields with different data types and/or analyzers
https://www.elastic.co/guide/en/elasticsearch/reference/7.2/multi-fields.html

5.4 Configure an index so that it properly maintains the relationships of nested arrays of objects
https://www.elastic.co/guide/en/elasticsearch/reference/7.2/nested.html
https://www.elastic.co/guide/en/elasticsearch/reference/7.2/parent-join.html

6、Cluster Administration

6.1 Allocate the shards of an index to specific nodes based on a given set of requirements
https://www.elastic.co/guide/en/elasticsearch/reference/7.2/index-modules-allocation.html
https://www.elastic.co/guide/en/elasticsearch/reference/7.2/modules-cluster.html

6.2 Configure shard allocation awareness and forced awareness for an index
https://www.elastic.co/guide/en/elasticsearch/reference/7.2/allocation-awareness.html

6.3 Diagnose shard issues and repair a cluster’s health
https://www.elastic.co/guide/en/elasticsearch/reference/7.2/cluster-health.html
https://www.elastic.co/guide/en/elasticsearch/reference/7.2/cluster-allocation-explain.html
https://www.elastic.co/guide/en/elasticsearch/reference/7.2/cluster-reroute.html

6.4 Backup and restore a cluster and/or specific indices
https://www.elastic.co/guide/en/elasticsearch/reference/7.2/backup-cluster.html
https://www.elastic.co/guide/en/elasticsearch/reference/7.2/modules-snapshots.html

6.5 Configure a cluster for use with a hot/warm architecture
https://www.elastic.co/guide/en/elasticsearch/reference/7.2/shard-allocation-filtering.html

6.6 Configure a cluster for cross cluster search
https://www.elastic.co/guide/en/elasticsearch/reference/7.2/modules-remote-clusters.html
https://www.elastic.co/guide/en/elasticsearch/reference/7.2/modules-cross-cluster-search.html

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