The logs from mod_slotmem_shm are the most interesting, so "LogLevel slotmem_shm:debug" should be enough (to limit debug logging to this module). This should show which shared memories paths (i.e. .../slotmem-shm-*.shm) are created/reused/attached by which instance, and figure out what kind of duplicates there may be.. On Sun, Dec 6, 2020 at 8:21 PM Wendell Hatcher <wendellhatcher1074@xxxxxxxxx> wrote: > > Let me gather this information from one of our servers next week. I will provide a little more background information tomorrow as well. > > On Sat, Dec 5, 2020, 7:08 PM Yann Ylavic <ylavic.dev@xxxxxxxxx> wrote: >> >> On Fri, Dec 4, 2020 at 7:45 PM Wendell Hatcher >> <wendellhatcher1074@xxxxxxxxx> wrote: >> > >> > This has nothing to do with underlying SHM stuff and everything to do with how multiple balancers, global and outside of virtual hosts, are initialized and sometimes persisted. This was changed greatly in 2.4.29.You should find the minimal set of balancers that reproduces the error and It is likely related to duplicate virtual hosts or duplicate proxy "workers". >> >> Could you please provide the full error_log (with LogLevel debug) of >> the httpd startup failure? >> If there are multiple instances (and potential duplicates), the >> error_log of all the instances may help too (with LogLevel debug, >> still). >> >> Regards; >> Yann. >> >> --------------------------------------------------------------------- >> To unsubscribe, e-mail: users-unsubscribe@xxxxxxxxxxxxxxxx >> For additional commands, e-mail: users-help@xxxxxxxxxxxxxxxx >> --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscribe@xxxxxxxxxxxxxxxx For additional commands, e-mail: users-help@xxxxxxxxxxxxxxxx