使用jmx_agent监控java程序

1.下载jmx_prometheus_javaagent.jar

从https://github.com/prometheus/jmx_exporter/releases下载最新版本的jmx_prometheus_javaagent.jar

2.创建一个名为jmx_exporter_config.yml的文件

用于配置jmx_prometheus_javaagent.jar的监控参数。该文件应该包含要暴露的MBean的名称，以及它们要被暴露的端口号。

---
lowercaseOutputName: true
rules:
- pattern: 'java.lang<type=MemoryPool,name=([^,]+)><>(Usage|PeakUsage)\.(used|committed|max)'
  name: jvm_memory_pool_$1_$2_$3_bytes
  type: GAUGE
- pattern: 'java.lang<type=MemoryPool,name=([^,]+)><>CollectionUsage\.(used|committed)'
  name: jvm_memory_pool_$1_collection_usage_$2_bytes
  type: GAUGE
- pattern: 'java.lang<type=GarbageCollector,name=([^,]+)><>CollectionTime'
  name: jvm_gc_collection_seconds_total
  help: Time spent in a given JVM garbage collector in seconds.
  labels:
    collector: '$1'
  type: COUNTER
- pattern: 'java.lang<type=GarbageCollector,name=([^,]+)><>CollectionCount'
  name: jvm_gc_collection_count_total
  help: Number of collections that have occurred for a given JVM garbage collector.
  labels:
    collector: '$1'
  type: COUNTER
- pattern: 'java.lang<type=Memory><>HeapMemoryUsage\.(used|committed|max)'
  name: jvm_memory_heap_$1_bytes
  type: GAUGE
- pattern: 'java.lang<type=Memory><>NonHeapMemoryUsage\.(used|committed|max)'
  name: jvm_memory_non_heap_$1_bytes
  type: GAUGE
- pattern: 'java.lang<type=Threading><>ThreadCount'
  name: jvm_threads_live
  type: GAUGE
- pattern: 'java.lang<type=Threading><>DaemonThreadCount'
  name: jvm_threads_daemon
  type: GAUGE
- pattern: 'java.lang<type=OperatingSystem><>(\w+)'
  name: jvm_$1
  type: GAUGE
- pattern: 'org.apache.cassandra.metrics<type=(\w+), name=(\w+)><>(\w+)'
  name: cassandra_$1_$2_$3
  type: GAUGE
- pattern: 'org.apache.cassandra.metrics<type=(\w+), name=(\w+)><>(Count|MeanRate|OneMinuteRate|FiveMinuteRate|FifteenMinuteRate)'
  name: cassandra_$1_$2_$3
  type: COUNTER
  unit: events/second
- pattern: 'org.apache.cassandra.metrics<type=(\w+), name=(\w+)><>(Min|Max|Mean|95thPercentile)'
  name: cassandra_$1_$2_$3
  type: GAUGE
  unit: milliseconds
- pattern: 'org.apache.cassandra.metrics<type=(\w+), name=(\w+)><>.*'
  name: cassandra_$1_$2
  type: GAUGE
- pattern: 'java.lang<type=OperatingSystem><>(committed_virtual_memory|free_physical_memory|free_swap_space|total_physical_memory|total_swap_space)_size:'
  name: os_$1_bytes
  type: GAUGE
  attrNameSnakeCase: true
- pattern: 'java.lang<type=OperatingSystem><>((?!process_cpu_time)\w+):'
  name: os_$1
  type: GAUGE
  attrNameSnakeCase: true

3.使用agent方式启动java应用程序的同时启动jmx

java -javaagent:/path/to/jmx_prometheus_javaagent.jar=8080:/path/to/jmx_exporter_config.yml -jar myapp.jar

4.配置Prometheus.yml,并重启prometheus

scrape_configs:
  - job_name: 'myapp'
    static_configs:
      - targets: ['localhost:8080']

5.访问prometheus查看是否添加成功