Debugging Tetragon

Enable debug log level

When debugging, it might be useful to change the log level. The default log level is controlled by the log-level option:

• Enable debug level with --log-level=debug

• Enable trace level with --log-level=trace

Change log level dynamically

It is possible to change the log level dynamically by sending the corresponding signal to tetragon process.

• Change log level to debug level by sending the SIGRTMIN+20 signal to tetragon pid:

  sudo kill -s SIGRTMIN+20 $(pidof tetragon)
  

• Change log level to trace level by sending the SIGRTMIN+21 signal to tetragon pid:

  sudo kill -s SIGRTMIN+21 $(pidof tetragon)
  

• To Restore the original log level send the SIGRTMIN+22 signal to tetragon pid:

  sudo kill -s SIGRTMIN+22 $(pidof tetragon)