Rotating a nohup.out logfile

Question

There are a few questions on how to rotate the output file generated by nohup. Most of the answers say to use logrotate with the copytruncate option.

However this does not actually work -- when the rotation occurs, it creates the rotated logfiles ok but the original file is not actually truncated and further log output continues to be appended.

This also occurs if I don't use nohup and just run myscript.py >>myscript.log (so basically copytruncate seems completely useless).

What's the "right" way to do this? (If custom script is required, either Bash or Python is preferred.)

Answer 1

The correct way to do this is to code myscript.py so that it writes to a log file rather than stdout and reacts to signals by closing and reopening it's log file.