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Published Jun. 30, 2025

Creating thread dumps in docker/kubernetes based environment

Written By

Sivakumar Perumal

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Issue

  • Is there any easy way to generate a thread dump in docker/kubernetes based environment?

Environment

  • Liferay Docker images

Resolution

  • The official Liferay Docker images are shipped with the thread dump script by default. To generate the thread dump, running this script probe_thread_dump.sh under /usr/local/bin should help.
  • The following environment variable must be set to true to enable ./probe_thread_dump.sh 
     
    "LIFERAY_THREAD_DUMP_PROBE_ENABLED" to "true"
    and running the below command will generate a thread dump.
    ./probe_thread_dump.sh -d "http://localhost" -f "c/portal/layout" -p 8080 -t 20
  • The output file will be under /opt/liferay/data/logs.

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