I have an odd one. A RedHat 7 server, with an apache server that runs just fine. I can start it with
systemctl start httpd. Developers had me run it as a different user (intersys instead of apache). Now when I FTP to the server as that user, (intersys) actually when I disconnect the FTP session, it kills httpd.
I see this error in
[Mon Mar 21 10:02:49.308506 2016] [mpm_prefork:emerg] [pid 13734] (43)Identifier removed: AH00144: couldn't grab the accept mutex [Mon Mar 21 10:02:49.611064 2016] [core:alert] [pid 12683] AH00050: Child 13726 returned a Fatal error... Apache is exiting!
I have tried changing the shell of "intersys" to various things, no help.
restart always works fine. I think something is sending
httpd a hangup signal. any ideas about how to stop that?