原文链接 : https://www.elastic.co/guide/en/elasticsearch/reference/5.0/cluster-nodes-info.html
译文链接 : http://www.apache.wiki/display/Elasticsearch/Nodes+Info
贡献者 : [那伊抹微笑]
cluster nodes info(集群节点信息)API 可以获取集群中一个或多个节点的信息。
curl -XGET 'http://localhost:9200/_nodes'
curl -XGET 'http://localhost:9200/_nodes/nodeId1,nodeId2'
第一个命令获取了集群中所有节点的统计信息。
第二个只选择获取了 nodeId1 和 nodeId2 的节点的统计信息。
所有节点选择的选项在这里有更详细的说明。
默认情况下,它只节点所有属性和核心配置 :
属性/配置 | 描述 |
---|---|
build_hash | Short hash of the last git commit in this release. |
host | The node’s host name. |
http_address | Host and port where primary HTTP connections are accepted. |
ip | The node’s IP address. |
name | The node’s name. |
total_indexing_buffer | Total heap allowed to be used to hold recently indexed documents before they must be written to disk. This size is a shared pool across all shards on this node, and is controlled by Indexing Buffer settings. |
total_indexing_buffer_in_bytes | Same as total_indexing_buffer , but expressed in bytes. |
transport_address | Host and port where transport HTTP connections are accepted. |
version | Elasticsearch version running on this node. |
它也可以只获取 **settings**,``**os**,``**process**,``**jvm**,``**thread_pool**,``**transport**,``**http**,``**plugins**,
**ingest
**和 `indices的信息。
curl -XGET 'http://localhost:9200/_nodes/process'
curl -XGET 'http://localhost:9200/_nodes/_all/process'
curl -XGET 'http://localhost:9200/_nodes/nodeId1,nodeId2/jvm,process'
# same as above
curl -XGET 'http://localhost:9200/_nodes/nodeId1,nodeId2/info/jvm,process'
curl -XGET 'http://localhost:9200/_nodes/nodeId1,nodeId2/_all
```
可以设置 **_all** 标记以返回所有的信息 - 或者您也可以简单的忽略它。
## Operating System information(操作系统信息)
可以设置 **os** 标记以获取与操作系统有关的信息 :
| 标记 | 描述 |
| --- | --- |
| os.refresh_interval_in_millis | Refresh interval for the OS statistics |
| os.name | Name of the operating system (ex: Linux, Windows, Mac OS X) |
| os.arch | Name of the JVM architecture (ex: amd64, x86) |
| os.version | Version of the operating system |
| os.available_processors | Number of processors available to the Java virtual machine |
| os.allocated_processors | The number of processors actually used to calculate thread pool size. This number can be set with the `processors` setting of a node and defaults to the number of processors reported by the OS. In both cases this number will never be larger than 32. |
## Process information(进程信息)
可以设置 **process **标记以获取与当前正在运行的进程的有关的信息 :
| 标记 | 描述 |
| --- | --- |
| process.refresh_interval_in_millis | Refresh interval for the process statistics |
| process.id | Process identifier (PID) |
| process.mlockall | Indicates if the process address space has been successfully locked in memory |
## Plugins information(插件信息)
**`plugins`**- 如果被设置,那么结果将包含关于每一个节点已加载的插件的详细信息 :
* **`name`**: plugin name
* **`description`**: plugin description if any
* **`site`**: `true` if the plugin is a site plugin
* **`jvm`**: `true` if the plugin is a plugin running in the JVM
* **`url`**: URL if the plugin is a site plugin
其结果看起来和下面相似 :
```
{
"cluster_name" : "test-cluster-MacBook-Air-de-David.local",
"nodes" : {
"hJLXmY_NTrCytiIMbX4_1g" : {
"name" : "node4",
"transport_address" : "inet[/172.18.58.139:9303]",
"hostname" : "MacBook-Air-de-David.local",
"version" : "0.90.0.Beta2-SNAPSHOT",
"http_address" : "inet[/172.18.58.139:9203]",
"plugins" : [ {
"name" : "test-plugin",
"description" : "test-plugin description",
"site" : true,
"jvm" : false
}, {
"name" : "test-no-version-plugin",
"description" : "test-no-version-plugin description",
"site" : true,
"jvm" : false
}, {
"name" : "dummy",
"description" : "No description found for dummy.",
"url" : "/_plugin/dummy/",
"site" : false,
"jvm" : true
} ]
}
}
}
```
## Ingest information(摄取数据信息)
**ingest** - 如果被设置,那么结果将包含关于每一个节点可用的处理器的详细信息 :
* **`type`**: the processor type
其结果看起来和下面相似 :
```
{
"cluster_name": "elasticsearch",
"nodes": {
"O70_wBv6S9aPPcAKdSUBtw": {
"ingest": {
"processors": [
{
"type": "date"
},
{
"type": "uppercase"
},
{
"type": "set"
},
{
"type": "lowercase"
},
{
"type": "gsub"
},
{
"type": "convert"
},
{
"type": "remove"
},
{
"type": "fail"
},
{
"type": "foreach"
},
{
"type": "split"
},
{
"type": "trim"
},
{
"type": "rename"
},
{
"type": "join"
},
{
"type": "append"
}
]
}
}
}
}
```
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