How to create docker goroutine, and memory heap, dumps

This document (000020101) is provided subject to the disclaimer at the end of this document.

Situation

Task

It's important to observe Docker as it operates to help drive troubleshooting an issue. Here are some commands to generate memory heap and goroutine dumps without killing the Docker process.

Pre-requisites

  • Docker with an exposed socket (typically found at /var/run/docker.sock)

Collecting dumps

Heap dump

Heap dumps report a sampling of memory allocations of live objects.

curl --unix-socket /var/run/docker.sock http://./debug/pprof/heap?debug=2
Goroutine dump

The goroutine dump reports stack traces of all current goroutines for the docker process.

curl --unix-socket /var/run/docker.sock http://./debug/pprof/goroutine?debug=2

The output normally is output to stdout, where it can be redirected to a file.

Depending on how Docker is configured, and where its configured to log to, the traces could end up in the docker.log file or with the system logs (syslog, journalctl, kern.log, messages, etc...).

Disclaimer

This Support Knowledgebase provides a valuable tool for SUSE customers and parties interested in our products and solutions to acquire information, ideas and learn from one another. Materials are provided for informational, personal or non-commercial use within your organization and are presented "AS IS" WITHOUT WARRANTY OF ANY KIND.

  • Document ID:000020101
  • Creation Date: 06-May-2021
  • Modified Date:06-May-2021
    • SUSE Rancher

< Back to Support Search

For questions or concerns with the SUSE Knowledgebase please contact: tidfeedback@suse.com

SUSE Support Forums

Get your questions answered by experienced Sys Ops or interact with other SUSE community experts.

Join Our Community

Support Resources

Learn how to get the most from the technical support you receive with your SUSE Subscription, Premium Support, Academic Program, or Partner Program.


SUSE Customer Support Quick Reference Guide SUSE Technical Support Handbook Update Advisories
Support FAQ

Open an Incident

Open an incident with SUSE Technical Support, manage your subscriptions, download patches, or manage user access.

Go to Customer Center