- Elasticsearch 教程
- Elasticsearch - 首页
- Elasticsearch - 基本概念
- Elasticsearch - 安装
- Elasticsearch - 数据填充
- 版本迁移
- Elasticsearch - API 约定
- Elasticsearch - 文档 API
- Elasticsearch - 搜索 API
- Elasticsearch - 聚合
- Elasticsearch - 索引 API
- Elasticsearch - CAT API
- Elasticsearch 集群 API
- Elasticsearch - 查询 DSL
- Elasticsearch - 映射
- Elasticsearch - 分析
- Elasticsearch - 模块
- Elasticsearch - 索引模块
- Elasticsearch - Ingest 节点
- Elasticsearch - 管理索引生命周期
- Elasticsearch - SQL 访问
- Elasticsearch - 监控
- Elasticsearch - 数据汇总
- Elasticsearch - 冻结索引
- Elasticsearch - 测试
- Elasticsearch - Kibana 仪表盘
- Elasticsearch - 按字段过滤
- Elasticsearch - 数据表
- Elasticsearch - 区域地图
- Elasticsearch - 饼图
- Elasticsearch - 面积图和条形图
- Elasticsearch - 时间序列
- Elasticsearch - 词云
- Elasticsearch - 热力图
- Elasticsearch - Canvas
- Elasticsearch - 日志 UI
- Elasticsearch 有用资源
- Elasticsearch - 快速指南
- Elasticsearch - 有用资源
- Elasticsearch - 讨论
Elasticsearch 集群 API
集群 API 用于获取有关集群及其节点的信息,并对其进行更改。要调用此 API,我们需要指定节点名称、地址或 _local。
GET /_nodes/_local
运行以上代码后,我们将得到如下所示的响应:
………………………………………………
cluster_name" : "elasticsearch",
"nodes" : {
"FKH-5blYTJmff2rJ_lQOCg" : {
"name" : "ubuntu",
"transport_address" : "127.0.0.1:9300",
"host" : "127.0.0.1",
"ip" : "127.0.0.1",
"version" : "7.0.0",
"build_flavor" : "default",
"build_type" : "tar",
"build_hash" : "b7e28a7",
"total_indexing_buffer" : 106502553,
"roles" : [
"master",
"data",
"ingest"
],
"attributes" : {
………………………………………………
集群健康状况
此 API 用于通过附加“health”关键字来获取集群健康状况。
GET /_cluster/health
运行以上代码后,我们将得到如下所示的响应:
{
"cluster_name" : "elasticsearch",
"status" : "yellow",
"timed_out" : false,
"number_of_nodes" : 1,
"number_of_data_nodes" : 1,
"active_primary_shards" : 7,
"active_shards" : 7,
"relocating_shards" : 0,
"initializing_shards" : 0,
"unassigned_shards" : 4,
"delayed_unassigned_shards" : 0,
"number_of_pending_tasks" : 0,
"number_of_in_flight_fetch" : 0,
"task_max_waiting_in_queue_millis" : 0,
"active_shards_percent_as_number" : 63.63636363636363
}
集群状态
此 API 用于通过附加“state”关键字 URL 来获取有关集群的状态信息。状态信息包含版本、主节点、其他节点、路由表、元数据和块。
GET /_cluster/state
运行以上代码后,我们将得到如下所示的响应:
………………………………………………
{
"cluster_name" : "elasticsearch",
"cluster_uuid" : "IzKu0OoVTQ6LxqONJnN2eQ",
"version" : 89,
"state_uuid" : "y3BlwvspR1eUQBTo0aBjig",
"master_node" : "FKH-5blYTJmff2rJ_lQOCg",
"blocks" : { },
"nodes" : {
"FKH-5blYTJmff2rJ_lQOCg" : {
"name" : "ubuntu",
"ephemeral_id" : "426kTGpITGixhEzaM-5Qyg",
"transport
}
………………………………………………
集群统计信息
此 API 通过使用“stats”关键字来帮助检索有关集群的统计信息。此 API 返回分片数、存储大小、内存使用情况、节点数、角色、操作系统和文件系统。
GET /_cluster/stats
运行以上代码后,我们将得到如下所示的响应:
………………………………………….
"cluster_name" : "elasticsearch",
"cluster_uuid" : "IzKu0OoVTQ6LxqONJnN2eQ",
"timestamp" : 1556435464704,
"status" : "yellow",
"indices" : {
"count" : 7,
"shards" : {
"total" : 7,
"primaries" : 7,
"replication" : 0.0,
"index" : {
"shards" : {
"min" : 1,
"max" : 1,
"avg" : 1.0
},
"primaries" : {
"min" : 1,
"max" : 1,
"avg" : 1.0
},
"replication" : {
"min" : 0.0,
"max" : 0.0,
"avg" : 0.0
}
………………………………………….
集群更新设置
此 API 允许您使用“settings”关键字更新集群的设置。设置有两种类型:持久性设置(在重启后应用)和瞬态设置(不会在完整的集群重启后保留)。
节点统计信息
此 API 用于检索集群中一个或多个节点的统计信息。节点统计信息与集群统计信息几乎相同。
GET /_nodes/stats
运行以上代码后,我们将得到如下所示的响应:
{
"_nodes" : {
"total" : 1,
"successful" : 1,
"failed" : 0
},
"cluster_name" : "elasticsearch",
"nodes" : {
"FKH-5blYTJmff2rJ_lQOCg" : {
"timestamp" : 1556437348653,
"name" : "ubuntu",
"transport_address" : "127.0.0.1:9300",
"host" : "127.0.0.1",
"ip" : "127.0.0.1:9300",
"roles" : [
"master",
"data",
"ingest"
],
"attributes" : {
"ml.machine_memory" : "4112797696",
"xpack.installed" : "true",
"ml.max_open_jobs" : "20"
},
………………………………………………………….
节点热线程
此 API 可帮助您检索有关集群中每个节点上当前热线程的信息。
GET /_nodes/hot_threads
运行以上代码后,我们将得到如下所示的响应:
:::{ubuntu}{FKH-5blYTJmff2rJ_lQOCg}{426kTGpITGixhEzaM5Qyg}{127.0.0.1}{127.0.0.1:9300}{ml.machine_memory=4112797696,
xpack.installed=true, ml.max_open_jobs=20}
Hot threads at 2019-04-28T07:43:58.265Z, interval=500ms, busiestThreads=3,
ignoreIdleThreads=true:
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