1 集群版本

{
  "name" : "es-cn-default",
  "cluster_name" : "es-cn-default",
  "cluster_uuid" : "MqayQ23q3443y29uUrw9bQ",
  "version" : {
    "number" : "7.7.1",
    "build_flavor" : "default",
    "build_type" : "tar",
    "build_hash" : "ad56dce891c901a492bb1ee393f12dfff473a423",
    "build_date" : "2020-05-28T16:30:01.040088Z",
    "build_snapshot" : false,
    "lucene_version" : "8.5.1",
    "minimum_wire_compatibility_version" : "6.8.0",
    "minimum_index_compatibility_version" : "6.0.0-beta1"
  },
  "tagline" : "You Know, for Search"
}

2 查看和设置配置

# 列出索引范围的设置（明确定义）
curl “localhost9200/index1/_settings”

# 列出 index1 和 index2 的索引范围设置（明确定义）
curl "localhost:9200/index1,index2/_settings"

# 列出以“index”开头的索引的索引范围设置（明确定义）
curl "localhost:9200/index*/_settings"

# 列出所有索引的索引范围设置（明确定义）
卷曲“本地主机：9200/_all/_settings”

# 以平面格式列出索引范围的设置（明确定义）
curl "localhost:9200/index1/_settings?flat_settings"

# 列出索引范围的设置（包括默认值）
curl "localhost:9200/index1/_settings?include_defaults"

# 以平面格式列出索引范围的设置（包括默认值）
curl "localhost:9200/index1/_settings?include_defaults&flat_settings"

# 更新 index1 的索引范围设置
curl -X PUT "localhost:9200/index1/_settings" -H 'Content-Type: application/json' -d'
{
  "index": {
    "number_of_replicas": 2
  }
}

# 将索引范围的设置重置为默认值
curl -X PUT "localhost:9200/index1/_settings" -H 'Content-Type: application/json' -d'
{
  "index": {
    "refresh_interval": null
  }
}

3 查看默认索引的配置

{
  "index" : {
    "settings" : {
      "index.creation_date" : "1623243817431",
      "index.indexing.slowlog.level" : "info",
      "index.indexing.slowlog.source" : "1000",
      "index.indexing.slowlog.threshold.index.debug" : "50ms",
      "index.indexing.slowlog.threshold.index.info" : "100ms",
      "index.indexing.slowlog.threshold.index.trace" : "20ms",
      "index.indexing.slowlog.threshold.index.warn" : "200ms",
      "index.number_of_replicas" : "1",
      "index.number_of_shards" : "12",
      "index.provided_name" : "dmo_index_testdrive",
      "index.refresh_interval" : "10s",
      "index.search.slowlog.level" : "info",
      "index.search.slowlog.threshold.fetch.debug" : "80ms",
      "index.search.slowlog.threshold.fetch.info" : "100ms",
      "index.search.slowlog.threshold.fetch.trace" : "50ms",
      "index.search.slowlog.threshold.fetch.warn" : "200ms",
      "index.search.slowlog.threshold.query.debug" : "100ms",
      "index.search.slowlog.threshold.query.info" : "200ms",
      "index.search.slowlog.threshold.query.trace" : "50ms",
      "index.search.slowlog.threshold.query.warn" : "500ms",
      "index.unassigned.node_left.delayed_timeout" : "5m",
      "index.uuid" : "KsRHKTI3QbaHHjZ0QaHsFA",
      "index.version.created" : "7070199"
    },
    "defaults" : {
      "index.allocation.max_retries" : "5",
      "index.analyze.max_token_count" : "10000",
      "index.auto_expand_replicas" : "false",
      "index.blocks.metadata" : "false",
      "index.blocks.read" : "false",
      "index.blocks.read_only" : "false",
      "index.blocks.read_only_allow_delete" : "false",
      "index.blocks.write" : "false",
      "index.codec" : "default",
      "index.compound_format" : "0.1",
      "index.data_path" : "",
      "index.default_pipeline" : "_none",
      "index.fielddata.cache" : "node",
      "index.final_pipeline" : "_none",
      "index.flush_after_merge" : "512mb",
      "index.force_memory_id_terms_dictionary" : "false",
      "index.force_memory_term_dictionary" : "false",
      "index.format" : "0",
      "index.frozen" : "false",
      "index.gc_deletes" : "60s",
      "index.hidden" : "false",
      "index.highlight.max_analyzed_offset" : "1000000",
      "index.indexing.slowlog.reformat" : "true",
      "index.lifecycle.indexing_complete" : "false",
      "index.lifecycle.name" : "",
      "index.lifecycle.origination_date" : "-1",
      "index.lifecycle.parse_origination_date" : "false",
      "index.lifecycle.rollover_alias" : "",
      "index.load_fixed_bitset_filters_eagerly" : "true",
      "index.mapper.dynamic" : "true",
      "index.mapping.coerce" : "false",
      "index.mapping.depth.limit" : "20",
      "index.mapping.field_name_length.limit" : "9223372036854775807",
      "index.mapping.ignore_malformed" : "false",
      "index.mapping.nested_fields.limit" : "50",
      "index.mapping.nested_objects.limit" : "10000",
      "index.mapping.total_fields.limit" : "1000",
      "index.max_adjacency_matrix_filters" : "100",
      "index.max_docvalue_fields_search" : "100",
      "index.max_inner_result_window" : "100",
      "index.max_ngram_diff" : "1",
      "index.max_refresh_listeners" : "1000",
      "index.max_regex_length" : "1000",
      "index.max_rescore_window" : "10000",
      "index.max_result_window" : "10000",
      "index.max_script_fields" : "32",
      "index.max_shingle_diff" : "3",
      "index.max_slices_per_scroll" : "1024",
      "index.max_terms_count" : "65536",
      "index.merge.policy.deletes_pct_allowed" : "33.0",
      "index.merge.policy.expunge_deletes_allowed" : "10.0",
      "index.merge.policy.floor_segment" : "2mb",
      "index.merge.policy.max_merge_at_once" : "10",
      "index.merge.policy.max_merge_at_once_explicit" : "30",
      "index.merge.policy.max_merged_segment" : "5gb",
      "index.merge.policy.reclaim_deletes_weight" : "2.0",
      "index.merge.policy.segments_per_tier" : "10.0",
      "index.merge.scheduler.auto_throttle" : "true",
      "index.merge.scheduler.max_merge_count" : "6",
      "index.merge.scheduler.max_thread_count" : "1",
      "index.number_of_routing_shards" : "1",
      "index.optimize_auto_generated_id" : "true",
      "index.percolator.map_unmapped_fields_as_text" : "false",
      "index.priority" : "1",
      "index.queries.cache.enabled" : "true",
      "index.query.default_field" : [
        "*"
      ],
      "index.query.parse.allow_unmapped_fields" : "true",
      "index.query_string.lenient" : "false",
      "index.requests.cache.enable" : "true",
      "index.routing.allocation.enable" : "all",
      "index.routing.allocation.total_shards_per_node" : "-1",
      "index.routing.rebalance.enable" : "all",
      "index.routing_partition_size" : "1",
      "index.search.idle.after" : "30s",
      "index.search.throttled" : "false",
      "index.shard.check_on_startup" : "false",
      "index.soft_deletes.enabled" : "false",
      "index.soft_deletes.retention.operations" : "0",
      "index.soft_deletes.retention_lease.period" : "12h",
      "index.sort.field" : [ ],
      "index.sort.missing" : [ ],
      "index.sort.mode" : [ ],
      "index.sort.order" : [ ],
      "index.source_only" : "false",
      "index.store.fs.fs_lock" : "native",
      "index.store.preload" : [ ],
      "index.store.stats_refresh_interval" : "10s",
      "index.store.type" : "",
      "index.top_metrics_max_size" : "10",
      "index.translog.durability" : "REQUEST",
      "index.translog.flush_threshold_size" : "512mb",
      "index.translog.generation_threshold_size" : "64mb",
      "index.translog.retention.age" : "12h",
      "index.translog.retention.size" : "512MB",
      "index.translog.sync_interval" : "5s",
      "index.verified_before_close" : "false",
      "index.warmer.enabled" : "true",
      "index.write.wait_for_active_shards" : "1",
      "index.xpack.ccr.following_index" : "false",
      "index.xpack.version" : "",
      "index.xpack.watcher.template.version" : ""
    }
  }
}

4 配置项目说明

待补充