是否可以从主机获取容器中 Java 进程的线程转储?
2022-09-03 15:52:07
我的 java 进程正在容器内运行。当然,我可以在主机上看到该过程,也可以看到它的pid。如果 jdk 没有安装在集群上,而是安装在主机上,我是否可以使用此 pid 从主机对 docker 容器中的 java 进程运行 jstack。顺便说一句,我试过了,遇到了以下错误
Attaching to process ID 66367, please wait...
Error attaching to process: Doesn't appear to be a HotSpot VM (could not find symbol "gHotSpotVMTypes" in remote process)
sun.jvm.hotspot.debugger.DebuggerException: Doesn't appear to be a HotSpot VM (could not find symbol "gHotSpotVMTypes" in remote process)
at sun.jvm.hotspot.HotSpotAgent.setupVM(HotSpotAgent.java:411)
at sun.jvm.hotspot.HotSpotAgent.go(HotSpotAgent.java:305)
at sun.jvm.hotspot.HotSpotAgent.attach(HotSpotAgent.java:140)
at sun.jvm.hotspot.tools.Tool.start(Tool.java:185)
at sun.jvm.hotspot.tools.Tool.execute(Tool.java:118)
at sun.jvm.hotspot.tools.JStack.main(JStack.java:92)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at sun.tools.jstack.JStack.runJStackTool(JStack.java:140)
at sun.tools.jstack.JStack.main(JStack.java:106)