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'dictionary changed size during iteration' error in log_result

See original GitHub issue

I frequently see following exception in logs:

2020-09-15 23:30:11    ERROR (simplemonitor) Caught unhandled exception during main loop
Traceback (most recent call last):
  File "/root/monitor/simplemonitor/simplemonitor/simplemonitor.py", line 766, in run
    self.run_loop()
  File "/root/monitor/simplemonitor/simplemonitor/simplemonitor.py", line 735, in run_loop
    self.do_alerts()
  File "/root/monitor/simplemonitor/simplemonitor/simplemonitor.py", line 663, in do_alerts
    self.do_alert(alerter)
  File "/root/monitor/simplemonitor/simplemonitor/simplemonitor.py", line 583, in do_alert
    for (name, monitor) in host_monitors.items():
RuntimeError: dictionary changed size during iteration

also

2020-09-16 00:52:54    ERROR (simplemonitor) exception while logging remote monitors
Traceback (most recent call last):
  File "/root/monitor/simplemonitor/simplemonitor/simplemonitor.py", line 547, in log_result
    for (name, monitor) in host_monitors.items():
RuntimeError: dictionary changed size during iteration

I haven’t yet investigated issue in depth, just leaving stack traces here.

Issue Analytics

State:
Created 3 years ago
Comments:14 (14 by maintainers)

Top GitHub Comments

1reaction

slomkowskicommented, Sep 28, 2020

I pulled this branch on my main machine and one of the machines behind NAT The other machine behind NAT uses an old version.

For now, looks OK to me, reports from both machines are visible. Thank you!

1reaction

jamesoffcommented, Sep 24, 2020

I’m happy to do it, I should have some time this weekend to look at it.

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