Arthas基本使用

官方文档

  1. 下载Arthas
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curl -O https://arthas.aliyun.com/arthas-boot.jar
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wget http://tosv.byted.org/obj/tos-team/toscli/toscli -O toscli && chmod a+x toscli && ./toscli -accessKey 2SCHBOIB1OW4AIW0MYJG  -bucket  dmpfile get -filename arthas-bin.zip arthas-bin.zip && unzip arthas-bin.zip

2.`ps aux | grep java`找到java进程

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ps aux | grep java

e.g.下面的进程id就是322
root         322 15.8  0.8 58852208 4711440 ?    Sl   18:27   9:29 java -server -Xms10g -Xmx10g -Xmn4g -XX:MetaspaceSize=512m -XX:MaxMetaspaceSize=512m -XX:+UseConcMarkSweepGC -XX:+UseCMSCompactAtFullCollection -XX:CMSMaxAbortablePrecleanTime=5000 -XX:+CMSClassUnloadingEnabled -XX:+UseCMSInitiatingOccupancyOnly -XX:CMSInitiatingOccupancyFraction=80 -XX:+HeapDumpOnOutOfMemoryError -XX:HeapDumpPath=/opt/log/tiger/java.hprof -XX:TargetSurvivorRatio=90 -Xloggc:/opt/log/tiger/gc.log -XX:+PrintGCDetails -XX:+PrintGCDateStamps -Djava.awt.headless=true -Dsun.net.client.defaultConnectTimeout=10000 -Dsun.net.client.defaultReadTimeout=30000 -XX:MaxDirectMemorySize=1g -XX:SurvivorRatio=10 -XX:+ExplicitGCInvokesConcurrent -Dsun.rmi.dgc.server.gcInterval=2592000000 -Dsun.rmi.dgc.client.gcInterval=2592000000 -XX:ParallelGCThreads=8 -jar kunlun-service-rpc-0.0.1-SNAPSHOT.jar --spring.profiles.active=prod --server.port=9403
root        9177  0.0  0.0  14524   892 pts/0    S+   19:27   0:00 grep java

3.Bind arthas到java进程

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java -jar arthas-boot.jar 322 # 这里改成你看到的进程id

4.使用watch函数

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watch com.dmp.kafka.client.MessageModel.Message getTagGroupMapMap "{params,returnObj,throwExp}" -x 2