Yann, quick question would it be ok to have a cronjob running daily maybe
at slow periods that runs a script to delete the sephmore segments using a
script while apache is running? It shouldn't cause issues with the apache
server processing data correct? Second ndly, we want to run a script during
our apache stop process that will deleting the files from the shm folder we
are hoping this will reschedule le our hanging apache servers during stops
and starts with a slotmem error.

-Wendell


On Sun, Dec 6, 2020, 6:45 PM Wendell Hatcher <[email protected]>
wrote:

> Will do! I appreciate the help with this as well.
>
> On Sun, Dec 6, 2020, 6:26 PM Yann Ylavic <[email protected]> wrote:
>
>> 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
>> <[email protected]> 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 <[email protected]> wrote:
>> >>
>> >> On Fri, Dec 4, 2020 at 7:45 PM Wendell Hatcher
>> >> <[email protected]> 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.
>> >>
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