[Twisted-Python] Known bug with twistd log rotation

[exarkun at twistedmatrix.com]

On 03:05 pm, max at riehl.io wrote:
>Hi!
>
>I'm finding it difficult to get log rotation working cleanly with 
>twistd (if dropping privileges through twistd, which we require).
>I went through all the docs and also found [1] very helpful, but the 
>problem boils down to the fact that
>>     Implications for Logfile Rotation
>>
>>Using the configuration described here, the LOGFILE will be created as 
>>user "root" and group "root", but rotated as user UID and group GID. 
>>If you want rotation to work as advertised it is necessary to put the 
>>LOGFILE in a directory in which UID/GID has permissions to rename 
>>files.
>
>and
>>     def rotate(self):
>>         """
>>         Rotate the file and create a new one.
>>
>>         If it's not possible to open new logfile, this will fail 
>>silently,
>>         and continue logging to old logfile.
>>         """
>>         if not (os.access(self.directory, os.W_OK) and 
>>os.access(self.path, os.W_OK)):
>>             return
>(twisted 14.0.0)
>
>will never work together. Even if the user twistd runs as is 
>technically able to rename the log file (due to having write 
>permissions on the directory), it will never try to since it can't 
>write to the file.
>There is a workaround on a comment in [1] but that's a really 
>unnecessary and hacky solution, IMHO.
>
>Is this a known bug?

Sounds like https://twistedmatrix.com/trac/ticket/5723

Jean-Paul