Kubernetes 에서 Java 애플리케이션을 운영할때에, Java 힙 덤프를 떠야하는 경우가 있다. 하지만 다음과 같이 덤프를 떠지지 않는다. $ kubectl exec -it employee-consumer-68cfc9864-kgx4w — sh / # ps aux PID USER TIME COMMAND 1 root 3:01 java -XX:+UseG1GC -XX:+UseStringDeduplication -XX:MetaspaceSize=128M -XX:MaxMetaspaceSize=128M -Djava.security.egd=file:/dev/./urandom -jar /app/employee-consumer.jar –spring.active.profile=${SPRING_PROFILES_ACTIVE} 57 root 0:00 sh 63 root 0:00 ps aux / # jcmd 1 VM.flags 1: com.sun.tools.attach.AttachNotSupportedException: Unable to get pid of LinuxThreads manager thread at sun.tools.attach.LinuxVirtualMachine.(LinuxVirtualMachine.java:86) at sun.tools.attach.LinuxAttachProvider.attachVirtualMachine(LinuxAttachProvider.java:63) at com.sun.tools.attach.VirtualMachine.attach(VirtualMachine.java:208) at sun.tools.jcmd.JCmd.executeCommandForPid(JCmd.java:147) at sun.tools.jcmd.JCmd.main(JCmd.java:131) / # […]