节点状态API
节点状态API可以获取Logstash的运行状态。
curl -XGET 'localhost:9600/_node/stats/<types>'
其中 <types> 是可选项，并且可以通过参数指定想要返回的类型。
默认情况下会返回所有状态，您可以通过参数组合，对返回值进行限制，多个参数用逗号分隔：
| 参数 | 说明 |
|---|---|
| jvm | 获取JVM状态，包括线程、内存、GC，以及运行时间等状态 |
| process | 获取处理状态，包括文件描述、内存消耗、CPU使用情况等状态 |
| events | 获取Logstash实例的事件相关统计信息（无论创建或销毁了多少管道） |
| pipelines | 获取Logstash每个管道的运行状态 |
| reloads | 获取重载配置成功或失败的运行状态 |
| os | 获取Logstash运行在容器中的运行状态 |
Logstash通用的监控API请查看 通用选项。
JVM状态
以下请求返回包含JVM统计信息的JSON文档：
curl -XGET 'localhost:9600/_node/stats/jvm?pretty'
响应示例：
{
"jvm" : {
"threads" : {
"count" : 49,
"peak_count" : 50
},
"mem" : {
"heap_used_percent" : 14,
"heap_committed_in_bytes" : 309866496,
"heap_max_in_bytes" : 1037959168,
"heap_used_in_bytes" : 151686096,
"non_heap_used_in_bytes" : 122486176,
"non_heap_committed_in_bytes" : 133222400,
"pools" : {
"survivor" : {
"peak_used_in_bytes" : 8912896,
"used_in_bytes" : 288776,
"peak_max_in_bytes" : 35782656,
"max_in_bytes" : 35782656,
"committed_in_bytes" : 8912896
},
"old" : {
"peak_used_in_bytes" : 148656848,
"used_in_bytes" : 148656848,
"peak_max_in_bytes" : 715849728,
"max_in_bytes" : 715849728,
"committed_in_bytes" : 229322752
},
"young" : {
"peak_used_in_bytes" : 71630848,
"used_in_bytes" : 2740472,
"peak_max_in_bytes" : 286326784,
"max_in_bytes" : 286326784,
"committed_in_bytes" : 71630848
}
}
},
"gc" : {
"collectors" : {
"old" : {
"collection_time_in_millis" : 607,
"collection_count" : 12
},
"young" : {
"collection_time_in_millis" : 4904,
"collection_count" : 1033
}
}
},
"uptime_in_millis" : 1809643
}
}
处理状态
以下请求返回包含处理统计信息的JSON文档：
curl -XGET 'localhost:9600/_node/stats/process?pretty'
响应示例：
{
"process" : {
"open_file_descriptors" : 184,
"peak_open_file_descriptors" : 185,
"max_file_descriptors" : 10240,
"mem" : {
"total_virtual_in_bytes" : 5486125056
},
"cpu" : {
"total_in_millis" : 657136,
"percent" : 2,
"load_average" : {
"1m" : 2.38134765625
}
}
}
}
事件状态
以下请求返回包含Logstash实例事件相关的统计信息的JSON文档：
curl -XGET 'localhost:9600/_node/stats/events?pretty'
响应示例：
{
"events" : {
"in" : 293658,
"filtered" : 293658,
"out" : 293658,
"duration_in_millis" : 2324391,
"queue_push_duration_in_millis" : 343816
}
}
管道状态
以下请求返回包含管道统计信息的JSON文档，包含：
curl -XGET 'localhost:9600/_node/stats/pipelines?pretty'
响应示例：
{
"pipelines" : {
"test" : {
"events" : {
"duration_in_millis" : 365495,
"in" : 216485,
"filtered" : 216485,
"out" : 216485,
"queue_push_duration_in_millis" : 342466
},
"plugins" : {
"inputs" : [ {
"id" : "35131f351e2dc5ed13ee04265a8a5a1f95292165-1",
"events" : {
"out" : 216485,
"queue_push_duration_in_millis" : 342466
},
"name" : "beats"
} ],
"filters" : [ {
"id" : "35131f351e2dc5ed13ee04265a8a5a1f95292165-2",
"events" : {
"duration_in_millis" : 55969,
"in" : 216485,
"out" : 216485
},
"failures" : 216485,
"patterns_per_field" : {
"message" : 1
},
"name" : "grok"
}, {
"id" : "35131f351e2dc5ed13ee04265a8a5a1f95292165-3",
"events" : {
"duration_in_millis" : 3326,
"in" : 216485,
"out" : 216485
},
"name" : "geoip"
} ],
"outputs" : [ {
"id" : "35131f351e2dc5ed13ee04265a8a5a1f95292165-4",
"events" : {
"duration_in_millis" : 278557,
"in" : 216485,
"out" : 216485
},
"name" : "elasticsearch"
} ]
},
"reloads" : {
"last_error" : null,
"successes" : 0,
"last_success_timestamp" : null,
"last_failure_timestamp" : null,
"failures" : 0
},
"queue" : {
"type" : "memory"
}
},
"test2" : {
"events" : {
"duration_in_millis" : 2222229,
"in" : 87247,
"filtered" : 87247,
"out" : 87247,
"queue_push_duration_in_millis" : 1532
},
"plugins" : {
"inputs" : [ {
"id" : "d7ea8941c0fc48ac58f89c84a9da482107472b82-1",
"events" : {
"out" : 87247,
"queue_push_duration_in_millis" : 1532
},
"name" : "twitter"
} ],
"filters" : [ ],
"outputs" : [ {
"id" : "d7ea8941c0fc48ac58f89c84a9da482107472b82-2",
"events" : {
"duration_in_millis" : 139545,
"in" : 87247,
"out" : 87247
},
"name" : "elasticsearch"
} ]
},
"reloads" : {
"last_error" : null,
"successes" : 0,
"last_success_timestamp" : null,
"last_failure_timestamp" : null,
"failures" : 0
},
"queue" : {
"type" : "memory"
}
}
}
}
您可以通过指定管道ID来查看特定管道的状态，下面的示例中，管道ID为 test：
curl -XGET 'localhost:9600/_node/stats/pipelines/test?pretty'
响应示例：
{
"test" : {
"events" : {
"duration_in_millis" : 365495,
"in" : 216485,
"filtered" : 216485,
"out" : 216485,
"queue_push_duration_in_millis" : 342466
},
"plugins" : {
"inputs" : [ {
"id" : "35131f351e2dc5ed13ee04265a8a5a1f95292165-1",
"events" : {
"out" : 216485,
"queue_push_duration_in_millis" : 342466
},
"name" : "beats"
} ],
"filters" : [ {
"id" : "35131f351e2dc5ed13ee04265a8a5a1f95292165-2",
"events" : {
"duration_in_millis" : 55969,
"in" : 216485,
"out" : 216485
},
"failures" : 216485,
"patterns_per_field" : {
"message" : 1
},
"name" : "grok"
}, {
"id" : "35131f351e2dc5ed13ee04265a8a5a1f95292165-3",
"events" : {
"duration_in_millis" : 3326,
"in" : 216485,
"out" : 216485
},
"name" : "geoip"
} ],
"outputs" : [ {
"id" : "35131f351e2dc5ed13ee04265a8a5a1f95292165-4",
"events" : {
"duration_in_millis" : 278557,
"in" : 216485,
"out" : 216485
},
"name" : "elasticsearch"
} ]
},
"reloads" : {
"last_error" : null,
"successes" : 0,
"last_success_timestamp" : null,
"last_failure_timestamp" : null,
"failures" : 0
},
"queue" : {
"type" : "memory"
}
}
}
}
重载状态
以下请求返回包含重载成败状态信息的JSON文档，包含：
curl -XGET 'localhost:9600/_node/stats/reloads?pretty'
响应示例：
{
"reloads": {
"successes": 0,
"failures": 0
}
}
操作系统状态
当Logstash在容器中运行时，以下请求将返回包含cgroup信息的JSON文档，以便更准确地查看CPU负载，包括是否对容器进行了限制。
curl -XGET 'localhost:9600/_node/stats/os?pretty'
响应示例：
{
"os" : {
"cgroup" : {
"cpuacct" : {
"control_group" : "/elastic1",
"usage_nanos" : 378477588075
},
"cpu" : {
"control_group" : "/elastic1",
"cfs_period_micros" : 1000000,
"cfs_quota_micros" : 800000,
"stat" : {
"number_of_elapsed_periods" : 4157,
"number_of_times_throttled" : 460,
"time_throttled_nanos" : 581617440755
}
}
}
}