SpringBoot2.0 Actuator 监控参数说明

主要内容更 监控参数说明

Maven坐标

<dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-actuator</artifactId>
</dependency>
<dependency><groupId>io.micrometer</groupId><artifactId>micrometer-registry-prometheus</artifactId>
</dependency>

 

SpringBoot2.0 Actuator监控指标分析

序号	参数	参数说明	是否监控	监控手段	重要度
---JVM---
1	jvm.memory.max	JVM最大内存
2	jvm.memory.committed	JVM可用内存	是	展示并监控堆内存和Metaspace	重要
3	jvm.memory.used	JVM已用内存	是	展示并监控堆内存和Metaspace	重要
4	jvm.buffer.memory.used	JVM缓冲区已用内存
5	jvm.buffer.count	当前缓冲区数
6	jvm.threads.daemon	JVM守护线程数	是	显示在监控页面
7	jvm.threads.live	JVM当前活跃线程数	是	显示在监控页面；监控达到阈值时报警	重要
8	jvm.threads.peak	JVM峰值线程数	是	显示在监控页面
9	jvm.classes.loaded	加载classes数
10	jvm.classes.unloaded	未加载的classes数
11	jvm.gc.memory.allocated	GC时，年轻代分配的内存空间
12	jvm.gc.memory.promoted	GC时，老年代分配的内存空间
13	jvm.gc.max.data.size	GC时，老年代的最大内存空间
14	jvm.gc.live.data.size	FullGC时，老年代的内存空间
15	jvm.gc.pause	GC耗时	是	显示在监控页面
---TOMCAT---
16	tomcat.sessions.created	tomcat已创建session数
17	tomcat.sessions.expired	tomcat已过期session数
18	tomcat.sessions.active.current	tomcat活跃session数
19	tomcat.sessions.active.max	tomcat最多活跃session数	是	显示在监控页面，超过阈值可报警或者进行动态扩容	重要
20	tomcat.sessions.alive.max.second	tomcat最多活跃session数持续时间
21	tomcat.sessions.rejected	超过session最大配置后，拒绝的session个数	是	显示在监控页面，方便分析问题
22	tomcat.global.error	错误总数	是	显示在监控页面，方便分析问题
23	tomcat.global.sent	发送的字节数
24	tomcat.global.request.max	request最长时间
25	tomcat.global.request	全局request次数和时间
26	tomcat.global.received	全局received次数和时间
27	tomcat.servlet.request	servlet的请求次数和时间
28	tomcat.servlet.error	servlet发生错误总数
29	tomcat.servlet.request.max	servlet请求最长时间
30	tomcat.threads.busy	tomcat繁忙线程	是	显示在监控页面，据此检查是否有线程夯住
31	tomcat.threads.current	tomcat当前线程数（包括守护线程）	是	显示在监控页面	重要
32	tomcat.threads.config.max	tomcat配置的线程最大数	是	显示在监控页面	重要
33	tomcat.cache.access	tomcat读取缓存次数
34	tomcat.cache.hit	tomcat缓存命中次数
---CPU---
35	system.cpu.count	CPU数量
36	system.load.average.1m	load average	是	超过阈值报警	重要
37	system.cpu.usage	系统CPU使用率
38	process.cpu.usage	当前进程CPU使用率	是	超过阈值报警
39	http.server.requests	http请求调用情况	是	显示10个请求量最大，耗时最长的URL；统计非200的请求量	重要
40	process.uptime	应用已运行时间	是	显示在监控页面
41	process.files.max	允许最大句柄数	是	配合当前打开句柄数使用
42	process.start.time	应用启动时间点	是	显示在监控页面
43	process.files.open	当前打开句柄数	是	监控文件句柄使用率，超过阈值后报警	重要

附录

SpringBoot1.x的metrics信息

{"mem":568029,"mem.free":164376,"processors":16,"instance.uptime":223643888,"uptime":223835542,"systemload.average":0.18,"heap.committed":415232,"heap.init":419840,"heap.used":250855,"heap":415232,"nonheap.committed":156480,"nonheap.init":2496,"nonheap.used":152797,"nonheap":0,"threads.peak":114,"threads.daemon":99,"threads.totalStarted":234,"threads":113,"classes":15474,"classes.loaded":15474,"classes.unloaded":0,"gc.ps_scavenge.count":1808,"gc.ps_scavenge.time":99224,"gc.ps_marksweep.count":3,"gc.ps_marksweep.time":5314
}

 

SpringBoot2.0的metrics信息

{"names":["jvm.memory.committed","http.server.requests","jvm.buffer.memory.used","jvm.gc.memory.allocated","tomcat.sessions.created","tomcat.sessions.expired","jvm.memory.used","tomcat.global.error","jvm.gc.max.data.size","system.cpu.count","jvm.memory.max","tomcat.global.sent","jvm.buffer.total.capacity","jvm.buffer.count","process.files.max","jvm.threads.daemon","process.start.time","tomcat.sessions.active.max","tomcat.global.request.max","jvm.gc.live.data.size","process.files.open","process.cpu.usage","tomcat.threads.current","tomcat.servlet.request","jvm.gc.pause","process.uptime","tomcat.threads.busy","system.load.average.1m","tomcat.cache.hit","tomcat.global.request","tomcat.servlet.error","tomcat.servlet.request.max","tomcat.cache.access","tomcat.sessions.active.current","system.cpu.usage","jvm.threads.live","jvm.classes.loaded","jvm.classes.unloaded","jvm.threads.peak","tomcat.threads.config.max","jvm.gc.memory.promoted","tomcat.sessions.rejected","tomcat.global.received","tomcat.sessions.alive.max"]
}