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本文参考官方文档:https://alibaba.github.io/arthas/install-detail.html
如有问题可加入上述文档中的官方QQ/钉钉群
一、安装(windows)
1、开发命令框,切换到准备安装的目录,D:/cloudcore/open_tools/arthas
2、复制下面命令,完成一键安装,并且在该目录下会生成一个as.sh文件
curl -L https://alibaba.github.io/arthas/install.sh | sh
3、执行as.sh,./as.sh,Found existing java process, please choose one and hit RETURN.这里选择Java进程,输入2,回车,执行后出现下面的错误
liuguangyu@LAPTOP-4R84C55I MINGW64 /d/cloudcore/open_tools/arthas
$ ./as.sh
Arthas script version: 3.0.5.2
[INFO] JAVA_HOME: /c/Java/jdk1.8.0_161
Found existing java process, please choose one and hit RETURN.
* [1]: 21924 org.apache.zookeeper.server.quorum.QuorumPeerMain
[2]: 25752
[2]
./as.sh: line 626: [2]-1: syntax error: operand expected (error token is "[2]-1")
2
updating version 3.0.5 ...
Download arthas from: https://repo1.maven.org/maven2/com/taobao/arthas/arthas-packaging/3.0.5/arthas-packaging-3.0.5-bin.zip
######################################################################## 100.0%
Archive: /tmp/temp_3.0.5_22664/arthas-3.0.5-bin.zip
inflating: /tmp/temp_3.0.5_22664/arthas-spy.jar
inflating: /tmp/temp_3.0.5_22664/arthas-boot.jar
inflating: /tmp/temp_3.0.5_22664/arthas-core.jar
inflating: /tmp/temp_3.0.5_22664/arthas-agent.jar
inflating: /tmp/temp_3.0.5_22664/arthas-demo.jar
inflating: /tmp/temp_3.0.5_22664/install-local.sh
inflating: /tmp/temp_3.0.5_22664/as.sh
inflating: /tmp/temp_3.0.5_22664/as.bat
inflating: /tmp/temp_3.0.5_22664/arthas-client.jar
update completed.
Arthas home: /c/Users/liuguangyu/.arthas/lib/3.0.5/arthas
Calculating attach execution time...
Attaching to using version /c/Users/liuguangyu/.arthas/lib/3.0.5/arthas...
[ERROR] Start arthas failed, exception stack trace:
com.taobao.middleware.cli.InvalidValueException: The value '-target-ip' is not accepted by 'pid'
at com.taobao.middleware.cli.impl.DefaultCommandLine.create(DefaultCommandLine.java:342)
at com.taobao.middleware.cli.impl.DefaultCommandLine.getValue(DefaultCommandLine.java:267)
at com.taobao.middleware.cli.impl.DefaultCommandLine.getOptionValue(DefaultCommandLine.java:91)
at com.taobao.arthas.core.Arthas.parse(Arthas.java:44)
at com.taobao.arthas.core.Arthas.<init>(Arthas.java:25)
at com.taobao.arthas.core.Arthas.main(Arthas.java:99)
Caused by: java.lang.IllegalArgumentException: java.lang.NumberFormatException: For input string: "-target-ip"
at com.taobao.middleware.cli.converters.ConstructorBasedConverter.fromString(ConstructorBasedConverter.java:70)
at com.taobao.middleware.cli.converters.Converters.create(Converters.java:52)
at com.taobao.middleware.cli.impl.DefaultCommandLine.create(DefaultCommandLine.java:339)
... 5 more
Caused by: java.lang.NumberFormatException: For input string: "-target-ip"
at java.lang.NumberFormatException.forInputString(NumberFormatException.java:65)
at java.lang.Integer.parseInt(Integer.java:580)
at java.lang.Integer.<init>(Integer.java:867)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
at com.taobao.middleware.cli.converters.ConstructorBasedConverter.fromString(ConstructorBasedConverter.java:67)
... 7 more
real 0m1.425s
user 0m0.015s
sys 0m0.015s
attach to target jvm () failed, check /c/Users/liuguangyu/logs/arthas/arthas.log or stderr of target jvm for any exceptions.
然后我把我开的zookeeper进程给关了,再次执行./as.sh,执行成功。
liuguangyu@LAPTOP-4R84C55I MINGW64 /d/cloudcore/open_tools/arthas
$ ./as.sh
Arthas script version: 3.0.5.2
[INFO] JAVA_HOME: /c/Java/jdk1.8.0_161
Found existing java process, please choose one and hit RETURN.
* [1]: 25752
Arthas home: /c/Users/liuguangyu/.arthas/lib/3.0.5/arthas
Calculating attach execution time...
Attaching to 25752 using version /c/Users/liuguangyu/.arthas/lib/3.0.5/arthas...
1
real 0m13.995s
user 0m0.000s
sys 0m0.061s
Attach success.
It seems that current bash is under Windows. /c/WINDOWS/system32/telnet can not run under bash.
Please start cmd.exe from Windows start menu, and then run telnet 127.0.0.1 3658 to connect to target process.
Or visit http://127.0.0.1:8563 to connect to target process.
4、在浏览器中输入http://localhost:8563/ 测试一下
点击Connect,出现一下页面
或者使用命令行进入:win+R—>cmd—>telnet 127.0.0.1 3658,同样可以出现上面的arthas语境
5、在本机上准备一个测试类,随便找了一个,并执行
public class TestArthas {
public static void main(String[] args) throws Exception {
int i = 0;
while(true) {
i += 1;
System.err.println(i);
Thread.sleep(2000);
}
}
}
二、命令列表
- dashboard 当前系统的实时数据面板。
- thread 查看当前线程信息,查看线程的堆栈。
- jvm 查看当前JVM信息
- sysprop 查看当前JVM的系统属性(System Property)
- sysenv 查看当前JVM的环境属性(System Environment Variables)
- getstatic 通过getstatic命令可以方便的查看类的静态属性。使用方法为getstatic class_name field_name
- ognl 执行ognl表达式
- sc 查看JVM已加载的类信息,这个命令支持的参数有 [d]、[E]、[f] 和 [x:]。
- sm sm 命令只能看到由当前类所声明 (declaring) 的方法,父类则无法看到
- dump dump 已加载类的 bytecode 到特定目录
- jad 反编译指定已加载类的源码
- classloader 查看classloader的继承树,urls,类加载信息
- redefine 加载外部的.class文件,redefine jvm已加载的类。
- monitor 方法执行监控,对匹配 class-pattern/method-pattern的类、方法的调用进行监控。
- watch 方法执行数据观测,能方便的观察到指定方法的调用情况。
- trace 方法内部调用路径,并输出方法路径上的每个节点上耗时。
- stack 输出当前方法被调用的调用路径
- tt 方法执行数据的时空隧道,记录下指定方法每次调用的入参和返回信息。
- options 全局开关
Arthas的基础命令:
- help——查看命令帮助信息
- cls——清空当前屏幕区域
- session——查看当前会话的信息
- reset——重置增强类,将被 Arthas 增强过的类全部还原,Arthas 服务端关闭时会重置所有增强过的类
- version——输出当前目标 Java 进程所加载的 Arthas 版本号
- history——打印命令历史
- quit——退出当前 Arthas 客户端,其他 Arthas 客户端不受影响
- shutdown——关闭 Arthas 服务端,所有 Arthas 客户端全部退出
- keymap——Arthas快捷键列表及自定义快捷键
再次贴出官方文档:https://alibaba.github.io/arthas/install-detail.html