> Hi Rainer/Simon - I've just had another look at this. With no > application running (IOW, all Java processes killed), I see this > behaviour:
Sorry, I was confused because I thought we're talking about files from Tomcat and not from Apache/mod_jk. Regards, Simon > > # systemctl start apache2 > > This create a number of apache2 processes (generally 7). 2 new mod_jk > files are created, corresponding to the apache2 process with the lowest > PID > > # systemctl stop apache2 > > This does not remove any files (but see below) > > # systemctl restart apache2 > > This has the same effect as a 'start' followed by a 'stop'. A 'reload', > as expected, doesn't change the PIDs and has no effect on file creation > or deletion. > > During testing, I did see one occasion on which the current mod_jk files > were deleted. I though this might be a timeout issue, since the restart > was carried out after 7 minutes, which was longer that normal. So, I > carried out 5 more tests, with the restart after 1, 2, 4, 8, and 11 > minutes, and in all these cases the old files were retained and not > deleted. > > Maybe there's a race condition, or something distribution-specific, in > the code which registers the cleanup? I can't do much for a couple of > days, at least, but I'll have a look when I get a minute. > > > On 19/12/2023 19:03, Rainer Jung wrote: >> Hi there, >> >> Am 19.12.23 um 18:05 schrieb EML: >>> Hi - I'm running mod_jk with an Apache front-end, and I'm having an >>> issue with the JkShmFile files. >>> >>> Every time Apache restarts mod_jk creates two new files >>> (jk-runtime-status.PID and jk-runtime-status.PID.lock). These are >>> never cleaned up; the log directory simply fills up with these files. >>> This happens whether or not I explicitly set JkShmFile in the Apache >>> conf. >> >> That should no happen. There is a cleanup routine registered, which >> should delete the files during shutdown. And that's the behavior that >> I normally observe. >> >>> Is there some way I can persuade mod_jk to use a single file pair, >>> without the PID suffix, or to delete the previous file pair on a >>> restart? I'm not doing any load sharing. >> >> If you must remove the PID, you can patch the code and build it >> yourself. The ID is added in file common/jk_shm.c in the following line: >> >> sprintf(jk_shmem.filename, "%s.%" JK_PID_T_FMT, fname, >> getpid()); >> >> You could replace it by: >> >> sprintf(jk_shmem.filename, "%s", fname); >> >> If you compile the code yourself, please us the latest version 1.2.49. >> >> As I mentioned, a normal shutdown should already remove the files. A >> reload should not change the pid and thereby the files. A restart in >> the sense of stop-then-start should also remove the old files. >> >>> I'm on Ubuntu 22.04, Apache 2.4.52. The mod_jk version is possibly >>> 1.2.48-1. >>> >>> Thanks. >> >> Regards, >> >> Rainer >> >> --------------------------------------------------------------------- >> To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org >> For additional commands, e-mail: users-h...@tomcat.apache.org >> --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org