此版本仍在开发中，尚未视为稳定版。如需最新稳定版本，请使用 Spring Boot 4.0.4！spring-doc.cadn.net.cn

Prometheus（prometheus）

prometheus 端点以 Prometheus 服务器抓取所需的格式提供 Spring Boot 应用程序的指标。spring-doc.cadn.net.cn

检索所有指标

要获取所有指标，请向 GET 发起一个 /actuator/prometheus 请求，如下列基于 curl 的示例所示：spring-doc.cadn.net.cn

$ curl 'http://localhost:8080/actuator/prometheus' -i -X GET

生成的响应类似于以下内容：spring-doc.cadn.net.cn

HTTP/1.1 200 OK
Content-Type: text/plain;version=0.0.4;charset=utf-8
Content-Length: 3087

# HELP jvm_buffer_count_buffers An estimate of the number of buffers in the pool
# TYPE jvm_buffer_count_buffers gauge
jvm_buffer_count_buffers{id="direct"} 2.0
jvm_buffer_count_buffers{id="mapped"} 0.0
jvm_buffer_count_buffers{id="mapped - 'non-volatile memory'"} 0.0
# HELP jvm_buffer_memory_used_bytes An estimate of the memory that the Java virtual machine is using for this buffer pool
# TYPE jvm_buffer_memory_used_bytes gauge
jvm_buffer_memory_used_bytes{id="direct"} 36864.0
jvm_buffer_memory_used_bytes{id="mapped"} 0.0
jvm_buffer_memory_used_bytes{id="mapped - 'non-volatile memory'"} 0.0
# HELP jvm_buffer_total_capacity_bytes An estimate of the total capacity of the buffers in this pool
# TYPE jvm_buffer_total_capacity_bytes gauge
jvm_buffer_total_capacity_bytes{id="direct"} 36864.0
jvm_buffer_total_capacity_bytes{id="mapped"} 0.0
jvm_buffer_total_capacity_bytes{id="mapped - 'non-volatile memory'"} 0.0
# HELP jvm_memory_committed_bytes The amount of memory in bytes that is committed for the Java virtual machine to use
# TYPE jvm_memory_committed_bytes gauge
jvm_memory_committed_bytes{area="heap",id="G1 Eden Space"} 6.815744E7
jvm_memory_committed_bytes{area="heap",id="G1 Old Gen"} 8.0740352E7
jvm_memory_committed_bytes{area="heap",id="G1 Survivor Space"} 8388608.0
jvm_memory_committed_bytes{area="nonheap",id="CodeHeap 'non-nmethods'"} 2555904.0
jvm_memory_committed_bytes{area="nonheap",id="CodeHeap 'non-profiled nmethods'"} 3211264.0
jvm_memory_committed_bytes{area="nonheap",id="CodeHeap 'profiled nmethods'"} 1.7629184E7
jvm_memory_committed_bytes{area="nonheap",id="Compressed Class Space"} 1.1534336E7
jvm_memory_committed_bytes{area="nonheap",id="Metaspace"} 8.126464E7
# HELP jvm_memory_max_bytes The maximum amount of memory in bytes that can be used for memory management
# TYPE jvm_memory_max_bytes gauge
jvm_memory_max_bytes{area="heap",id="G1 Eden Space"} -1.0
jvm_memory_max_bytes{area="heap",id="G1 Old Gen"} 1.610612736E9
jvm_memory_max_bytes{area="heap",id="G1 Survivor Space"} -1.0
jvm_memory_max_bytes{area="nonheap",id="CodeHeap 'non-nmethods'"} 5832704.0
jvm_memory_max_bytes{area="nonheap",id="CodeHeap 'non-profiled nmethods'"} 1.22916864E8
jvm_memory_max_bytes{area="nonheap",id="CodeHeap 'profiled nmethods'"} 1.22908672E8
jvm_memory_max_bytes{area="nonheap",id="Compressed Class Space"} 1.073741824E9
jvm_memory_max_bytes{area="nonheap",id="Metaspace"} -1.0
# HELP jvm_memory_used_bytes The amount of used memory
# TYPE jvm_memory_used_bytes gauge
jvm_memory_used_bytes{area="heap",id="G1 Eden Space"} 5.4525952E7
jvm_memory_used_bytes{area="heap",id="G1 Old Gen"} 5.9768832E7
jvm_memory_used_bytes{area="heap",id="G1 Survivor Space"} 7864320.0
jvm_memory_used_bytes{area="nonheap",id="CodeHeap 'non-nmethods'"} 1867264.0
jvm_memory_used_bytes{area="nonheap",id="CodeHeap 'non-profiled nmethods'"} 3197184.0
jvm_memory_used_bytes{area="nonheap",id="CodeHeap 'profiled nmethods'"} 1.7620736E7
jvm_memory_used_bytes{area="nonheap",id="Compressed Class Space"} 1.1191144E7
jvm_memory_used_bytes{area="nonheap",id="Metaspace"} 8.0533328E7

默认的响应内容类型为 text/plain;version=0.0.4。 当使用适当的 application/openmetrics-text;version=1.0.0 请求头调用该端点时，它也可以生成 Accept，如下列基于 curl 的示例所示：spring-doc.cadn.net.cn

$ curl 'http://localhost:8080/actuator/prometheus' -i -X GET \
    -H 'Accept: application/openmetrics-text; version=1.0.0; charset=utf-8'

生成的响应类似于以下内容：spring-doc.cadn.net.cn

HTTP/1.1 200 OK
Content-Type: application/openmetrics-text;version=1.0.0;charset=utf-8
Content-Length: 3090

# TYPE jvm_buffer_count_buffers gauge
# HELP jvm_buffer_count_buffers An estimate of the number of buffers in the pool
jvm_buffer_count_buffers{id="direct"} 2.0
jvm_buffer_count_buffers{id="mapped"} 0.0
jvm_buffer_count_buffers{id="mapped - 'non-volatile memory'"} 0.0
# TYPE jvm_buffer_memory_used_bytes gauge
# HELP jvm_buffer_memory_used_bytes An estimate of the memory that the Java virtual machine is using for this buffer pool
jvm_buffer_memory_used_bytes{id="direct"} 36864.0
jvm_buffer_memory_used_bytes{id="mapped"} 0.0
jvm_buffer_memory_used_bytes{id="mapped - 'non-volatile memory'"} 0.0
# TYPE jvm_buffer_total_capacity_bytes gauge
# HELP jvm_buffer_total_capacity_bytes An estimate of the total capacity of the buffers in this pool
jvm_buffer_total_capacity_bytes{id="direct"} 36864.0
jvm_buffer_total_capacity_bytes{id="mapped"} 0.0
jvm_buffer_total_capacity_bytes{id="mapped - 'non-volatile memory'"} 0.0
# TYPE jvm_memory_committed_bytes gauge
# HELP jvm_memory_committed_bytes The amount of memory in bytes that is committed for the Java virtual machine to use
jvm_memory_committed_bytes{area="heap",id="G1 Eden Space"} 6.815744E7
jvm_memory_committed_bytes{area="heap",id="G1 Old Gen"} 8.0740352E7
jvm_memory_committed_bytes{area="heap",id="G1 Survivor Space"} 8388608.0
jvm_memory_committed_bytes{area="nonheap",id="CodeHeap 'non-nmethods'"} 2555904.0
jvm_memory_committed_bytes{area="nonheap",id="CodeHeap 'non-profiled nmethods'"} 3211264.0
jvm_memory_committed_bytes{area="nonheap",id="CodeHeap 'profiled nmethods'"} 1.7629184E7
jvm_memory_committed_bytes{area="nonheap",id="Compressed Class Space"} 1.14688E7
jvm_memory_committed_bytes{area="nonheap",id="Metaspace"} 8.1002496E7
# TYPE jvm_memory_max_bytes gauge
# HELP jvm_memory_max_bytes The maximum amount of memory in bytes that can be used for memory management
jvm_memory_max_bytes{area="heap",id="G1 Eden Space"} -1.0
jvm_memory_max_bytes{area="heap",id="G1 Old Gen"} 1.610612736E9
jvm_memory_max_bytes{area="heap",id="G1 Survivor Space"} -1.0
jvm_memory_max_bytes{area="nonheap",id="CodeHeap 'non-nmethods'"} 5832704.0
jvm_memory_max_bytes{area="nonheap",id="CodeHeap 'non-profiled nmethods'"} 1.22916864E8
jvm_memory_max_bytes{area="nonheap",id="CodeHeap 'profiled nmethods'"} 1.22908672E8
jvm_memory_max_bytes{area="nonheap",id="Compressed Class Space"} 1.073741824E9
jvm_memory_max_bytes{area="nonheap",id="Metaspace"} -1.0
# TYPE jvm_memory_used_bytes gauge
# HELP jvm_memory_used_bytes The amount of used memory
jvm_memory_used_bytes{area="heap",id="G1 Eden Space"} 5.3477376E7
jvm_memory_used_bytes{area="heap",id="G1 Old Gen"} 5.9768832E7
jvm_memory_used_bytes{area="heap",id="G1 Survivor Space"} 7864320.0
jvm_memory_used_bytes{area="nonheap",id="CodeHeap 'non-nmethods'"} 1866112.0
jvm_memory_used_bytes{area="nonheap",id="CodeHeap 'non-profiled nmethods'"} 3192448.0
jvm_memory_used_bytes{area="nonheap",id="CodeHeap 'profiled nmethods'"} 1.7587584E7
jvm_memory_used_bytes{area="nonheap",id="Compressed Class Space"} 1.11672E7
jvm_memory_used_bytes{area="nonheap",id="Metaspace"} 8.0317504E7
# EOF

查询参数

该端点使用查询参数来限制其返回的样本。 下表列出了支持的查询参数：spring-doc.cadn.net.cn

参数 <description> </description>

includedNamesspring-doc.cadn.net.cn

将示例限制为与名称匹配的那些。可选。spring-doc.cadn.net.cn

检索过滤后的指标

要检索匹配特定名称的指标，请向 GET 发起一个 /actuator/prometheus 请求，并附带 includedNames 查询参数，如下列基于 curl 的示例所示：spring-doc.cadn.net.cn

$ curl 'http://localhost:8080/actuator/prometheus?includedNames=jvm_memory_used_bytes%2Cjvm_memory_committed_bytes' -i -X GET

生成的响应类似于以下内容：spring-doc.cadn.net.cn

HTTP/1.1 200 OK
Content-Type: text/plain;version=0.0.4;charset=utf-8
Content-Length: 1459

# HELP jvm_memory_committed_bytes The amount of memory in bytes that is committed for the Java virtual machine to use
# TYPE jvm_memory_committed_bytes gauge
jvm_memory_committed_bytes{area="heap",id="G1 Eden Space"} 6.815744E7
jvm_memory_committed_bytes{area="heap",id="G1 Old Gen"} 8.0740352E7
jvm_memory_committed_bytes{area="heap",id="G1 Survivor Space"} 8388608.0
jvm_memory_committed_bytes{area="nonheap",id="CodeHeap 'non-nmethods'"} 2555904.0
jvm_memory_committed_bytes{area="nonheap",id="CodeHeap 'non-profiled nmethods'"} 3211264.0
jvm_memory_committed_bytes{area="nonheap",id="CodeHeap 'profiled nmethods'"} 1.769472E7
jvm_memory_committed_bytes{area="nonheap",id="Compressed Class Space"} 1.1534336E7
jvm_memory_committed_bytes{area="nonheap",id="Metaspace"} 8.126464E7
# HELP jvm_memory_used_bytes The amount of used memory
# TYPE jvm_memory_used_bytes gauge
jvm_memory_used_bytes{area="heap",id="G1 Eden Space"} 5.5574528E7
jvm_memory_used_bytes{area="heap",id="G1 Old Gen"} 5.9768832E7
jvm_memory_used_bytes{area="heap",id="G1 Survivor Space"} 7864320.0
jvm_memory_used_bytes{area="nonheap",id="CodeHeap 'non-nmethods'"} 1867264.0
jvm_memory_used_bytes{area="nonheap",id="CodeHeap 'non-profiled nmethods'"} 3203328.0
jvm_memory_used_bytes{area="nonheap",id="CodeHeap 'profiled nmethods'"} 1.7649152E7
jvm_memory_used_bytes{area="nonheap",id="Compressed Class Space"} 1.1191752E7
jvm_memory_used_bytes{area="nonheap",id="Metaspace"} 8.0547128E7