AH00493: SIGUSR1 received. Doing graceful restart

Everyday at the same time, I get the above error in error logs.   Anyone know why?

which of the logs?

usr/local/apache/logs/error_log

we need more information on this.
Kindly contact support to check this

[Fri Jan 29 03:47:32.439506 2021] [core:notice] [pid 13680:tid 139973724751744] AH00094: Command line: '/usr/local/apache/bin/httpd'
[Fri Jan 29 03:47:33.328297 2021] [mpm_event:notice] [pid 13680:tid 139973724751744] AH00493: SIGUSR1 received.  Doing graceful restart

This happens on all of my servers (C7 and C8) at the same time everyday.  BUT the time is different everyday.

I suspect it may be deliberate and part of nightly auto-SSL renewals.

Well yeah.....that's is kinda obvious even to the blind.

But, it's the only process that is restarting apache at least once a day, everyday.

Well yeah.....that's is kinda obvious even to the blind.

Strange that YOU didn't mention it!   
In an Apache only installation, then a reload would be sufficient but I suspect that a restart is used, to cater for all (nginx included) installations.

after all sl operations apache restarts itself and sells:

   [mpm_event:notice] [pid 3838130:tid 139681793718144] AH00493: SIGUSR1 received. Do a graceful reboot

Is this solution a solution?

Hello guys i had just came acreoss you issue and i want to mention this also !!


i do had seen this y=type of issue in my live cwp7 server and i had contacted support to help but they did also pointed that ssl renew might be the cause to apache restart and duew to this my website webhooks are not sync .

Did you guys had find any solutions for this . if yes !
please let me know

Cron (anacron) runs overnight at 3 am. Is that when you are seeing this? For me apache reloads with the logrotate run that is called at that time. And as mentioned in the thread, there is the AutoSSL certificate renewals. Do your sites not come up afterward? Do you have to manually tend to things?