写在前面：2020年面试必备的Java后端进阶面试题总结了一份复习指南在Github上，内容详细，图文并茂，有需要学习的朋友可以Star一下！
GitHub地址：https://github.com/abel-max/Java-Study-Note/tree/master

1.下包

wget 
https://repo1.maven.org/maven2/io/prometheus/jmx/jmx_prometheus_java
agent/0.13.0/jmx_prometheus_javaagent-0.13.0.jar

2.配置java启动命令

-javaagent:/data/logs/jmx-exporter/jmx_prometheus_javaagent-0.13.0.jar=33334:/data/logs/jmx-exporter/config.yaml

/data/logs/jmx-exporter/jmx_prometheus_javaagent-0.13.0.jar:jar包路径

33334:监控端口

/data/logs/jmx-exporter/config.yaml:配置文件

java -javaagent:/data/logs/jmx-exporter/jmx_prometheus_javaagent-
0.13.0.jar=33334:/data/logs/jmx-exporter/config.yaml -jar -server -
XX:MetaspaceSize=256M -XX:MaxMetaspaceSize=256M -Xms2048M -
Xmx2048M -Xmn256M -Xss512K -XX:SurvivorRatio=4 -
XX:+UseConcMarkSweepGC /starit-buckyshop-stat.jar --
spring.profiles.active=newsuper

3.配置jmx配置文件（发现所有监控项）

cat /mnt/jmx-exporter/config.yaml ---startDelaySeconds: 
0lowercaseOutputName: falselowercaseOutputLabelNames: 
falsewhitelistObjectNames: 
["org.apache.cassandra.metrics:*"]blacklistObjectNames: 
["org.apache.cassandra.metrics:type=ColumnFamily,*"]rules:  - pattern: 
'org.apache.cassandra.metrics<type=(\w+), name=(\w+)><>Value: (\d+)'    
name: cassandra_$1_$2    value: $3    valueFactor: 0.001    labels: {}    
help: "Cassandra metric $1 $2"    type: GAUGE    attrNameSnakeCase: 
false

4.配置prometheus

cat ~/kube-prometheus-0.5.0/manifests/prometheus-additional.yaml - 
job_name: 'jmx-exporter'  kubernetes_sd_configs:    - role: pod#  
metrics_path: /metrics  relabel_configs:    - source_labels: [__address__]    
  action: keep      regex: '(.*):(.*)'    - source_labels: 
[__meta_kubernetes_pod_container_port_number]      action: keep      
regex: '33334'    - source_labels: [__meta_kubernetes_namespace]      
action: replace      target_label: kubernetes_namespace    - source_labels: 
[__meta_kubernetes_pod_name]      action: replace      target_label: 
kubernetes_pod_name  scheme: http

5.配置deployment

deployment增加jmx的container

6.导入grafana

1996

kubernetes pod 级别的 JVM 监控

来源：https://www.tuicool.com/articles/eERBbym